FileUpload Control on Mobile Form


W

Woodgnome

Hi,

I am trying to provide the user with a file upload facility on mobile
devices that will support it. So I have tried using the FileUpload control in
a device specific section - as follows, but when the form posts back, the
HasFile proerty is always set to false and the file is nowhere to be seen.
It would appear that it may be something to do with the fact that the form is
rendering without enctype="multipart/form-data" on the form tag. Anyone any
ideas how I might get this to work ?

<mobile:Form ID="NewForm" runat="server" Title="New Form">

<mobile:DeviceSpecific ID="DeviceSpecific1" Runat="Server">
<Choice>
<FooterTemplate>
<tr>
<td>
<asp:FileUpload ID="fileUpload1"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload2"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload3"
runat="server"></asp:FileUpload>
</td>
</tr>
</FooterTemplate>
</Choice>
</mobile:DeviceSpecific>

.......
 
Ad

Advertisements

S

Steven Cheng[MSFT]

Hi Woodgnome,

Regarding on the ASP.NET mobile page fileuploading issue, I've performed
some local tests and did found the same behavior as you mentioned. It seems
the Mobile Form doesn't allow us to insert our custom attributes into it
like a standard htmlForm control. I've also tried manually add the
"enctype="multipart/form-data" " attribute into the mobile form and it was
also ignored and runtime. BTW, for mobile devices, I notice that few WAP
or xhtml mp devices support file upload element,

http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=intro

so are your web application's target devices HTML enabled? If so, maybe
you can consider use a standard ASP.NET page(not mobile page) to serve the
fileupload functionality(since only a simple screen with some text and file
upload html element are necessary), how do you think?

Anyway, I'll also help you consult some other mobile engineers to see
whether there is anything else we can do here, I'll inform you as soon as I
get any update.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



==================================================

Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.



Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.

==================================================


This posting is provided "AS IS" with no warranties, and confers no rights.
 
W

Woodgnome

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but the
intention was to make the pages available to more devices at a later date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.
 
S

Steven Cheng[MSFT]

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway, I'm
still doing some further research on this and will inform you if I get any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.





--------------------
 
S

Steven Cheng[MSFT]

Hi Woodgnome,

Are you still focus on this issue? I've just got some new info. I've
discussed with a DEV engineer who has ever worked on a similar issue, here
is a workaround for mobile page to use the fileupload control. See the
following comments

==================================
The reason upload control can't work on mobile page is the result rendered
by mobile page is lacking a form property: enctype="multipart/form-data".

To inject this property you can inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method. The override method is
something link below:

public class ChtmlMobileMultipartTextWriter :
System.Web.UI.MobileControls.Adapters.ChtmlMobileTextWriter
{
public ChtmlMobileMultipartTextWriter(System.IO.TextWriter writer,
MobileCapabilities device)
: base(writer, device)
{
}

public override void WriteBeginTag(string tag)
{
if (tag == null)
{
throw new ArgumentNullException("tag");
}

base.WriteBeginTag(tag);

if (tag.Equals("form"))
{
WriteAttribute("enctype", "multipart/form-data");
}
}
}

==============================

Hope this still helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
X-Tomcat-ID: 34003249
References: <7A4749E1-C6CF-4E97-94[email protected]>
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
From: (e-mail address removed) (Steven Cheng[MSFT])
Organization: Microsoft
Date: Wed, 29 Aug 2007 03:00:00 GMT
Subject: RE: FileUpload Control on Mobile Form
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
Lines: 120
Path: TK2MSFTNGHUB02.phx.gbl
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2222
NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway, I'm
still doing some further research on this and will inform you if I get any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.





--------------------
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2217
NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but the
intention was to make the pages available to more devices at a later date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.



http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#noti f
 
S

Steven Cheng[MSFT]

Hi Woodgnome,

Does the further info in my last reply helps? If there is anything else we
can help, please feel free to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
Date: Fri, 31 Aug 2007 04:02:44 GMT
Subject: RE: FileUpload Control on Mobile Form
ing-Host: tomcatimport2.phx.gbl 10.201.218.182
Hi Woodgnome,

Are you still focus on this issue? I've just got some new info. I've
discussed with a DEV engineer who has ever worked on a similar issue, here
is a workaround for mobile page to use the fileupload control. See the
following comments

==================================
The reason upload control can't work on mobile page is the result rendered
by mobile page is lacking a form property: enctype="multipart/form-data".

To inject this property you can inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method. The override method is
something link below:

public class ChtmlMobileMultipartTextWriter :
System.Web.UI.MobileControls.Adapters.ChtmlMobileTextWriter
{
public ChtmlMobileMultipartTextWriter(System.IO.TextWriter writer,
MobileCapabilities device)
: base(writer, device)
{
}

public override void WriteBeginTag(string tag)
{
if (tag == null)
{
throw new ArgumentNullException("tag");
}

base.WriteBeginTag(tag);

if (tag.Equals("form"))
{
WriteAttribute("enctype", "multipart/form-data");
}
}
}

==============================

Hope this still helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
X-Tomcat-ID: 34003249
References: <[email protected]>
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
From: (e-mail address removed) (Steven Cheng[MSFT])
Organization: Microsoft
Date: Wed, 29 Aug 2007 03:00:00 GMT
Subject: RE: FileUpload Control on Mobile Form
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
Lines: 120
Path: TK2MSFTNGHUB02.phx.gbl
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2222
NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway, I'm
still doing some further research on this and will inform you if I get any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.





--------------------
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2217
NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but the
intention was to make the pages available to more devices at a later date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.



:

Hi Woodgnome,

Regarding on the ASP.NET mobile page fileuploading issue, I've performed
some local tests and did found the same behavior as you mentioned. It seems
the Mobile Form doesn't allow us to insert our custom attributes into it
like a standard htmlForm control. I've also tried manually add the
"enctype="multipart/form-data" " attribute into the mobile form and it was
also ignored and runtime. BTW, for mobile devices, I notice that few WAP
or xhtml mp devices support file upload element,

http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=intro

so are your web application's target devices HTML enabled? If so, maybe
you can consider use a standard ASP.NET page(not mobile page) to serve the
fileupload functionality(since only a simple screen with some text and file
upload html element are necessary), how do you think?

Anyway, I'll also help you consult some other mobile engineers to see
whether there is anything else we can do here, I'll inform you as soon as I
get any update.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



==================================================

Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#not
i
 
Ad

Advertisements

W

Woodgnome

Hi Steven,

Thanks for your posts, this will be helpful if I need to get it working on
other mobile devices later.

I have managed to get it working on a standard html based ASP.NET page for
now.

However, I have now noticed that the the file name part of the file path
seams to be restricted to a maximum of 10 chars. I have tried adding the
maxLength at a custom attribute but this does not seam to have any effect.
Any ideas how I might be able to allow the user to submit longer file names ?

Woodgnome.

P.S. This is on the Windows Mobile 6 Classic Emulator.

Steven Cheng said:
Hi Woodgnome,

Does the further info in my last reply helps? If there is anything else we
can help, please feel free to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
Date: Fri, 31 Aug 2007 04:02:44 GMT
Subject: RE: FileUpload Control on Mobile Form
ing-Host: tomcatimport2.phx.gbl 10.201.218.182
Hi Woodgnome,

Are you still focus on this issue? I've just got some new info. I've
discussed with a DEV engineer who has ever worked on a similar issue, here
is a workaround for mobile page to use the fileupload control. See the
following comments

==================================
The reason upload control can't work on mobile page is the result rendered
by mobile page is lacking a form property: enctype="multipart/form-data".

To inject this property you can inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method. The override method is
something link below:

public class ChtmlMobileMultipartTextWriter :
System.Web.UI.MobileControls.Adapters.ChtmlMobileTextWriter
{
public ChtmlMobileMultipartTextWriter(System.IO.TextWriter writer,
MobileCapabilities device)
: base(writer, device)
{
}

public override void WriteBeginTag(string tag)
{
if (tag == null)
{
throw new ArgumentNullException("tag");
}

base.WriteBeginTag(tag);

if (tag.Equals("form"))
{
WriteAttribute("enctype", "multipart/form-data");
}
}
}

==============================

Hope this still helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
X-Tomcat-ID: 34003249
References: <[email protected]>
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
From: (e-mail address removed) (Steven Cheng[MSFT])
Organization: Microsoft
Date: Wed, 29 Aug 2007 03:00:00 GMT
Subject: RE: FileUpload Control on Mobile Form
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
Lines: 120
Path: TK2MSFTNGHUB02.phx.gbl
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2222
NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway, I'm
still doing some further research on this and will inform you if I get any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.





--------------------
Xref: TK2MSFTNGHUB02.phx.gbl
microsoft.public.dotnet.framework.aspnet.webcontrols:2217
NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but
the
intention was to make the pages available to more devices at a later date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.



:

Hi Woodgnome,

Regarding on the ASP.NET mobile page fileuploading issue, I've performed
some local tests and did found the same behavior as you mentioned. It
seems
the Mobile Form doesn't allow us to insert our custom attributes into
it
like a standard htmlForm control. I've also tried manually add the
"enctype="multipart/form-data" " attribute into the mobile form and it
was
also ignored and runtime. BTW, for mobile devices, I notice that few
WAP
or xhtml mp devices support file upload element,

http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=intro

so are your web application's target devices HTML enabled? If so, maybe
you can consider use a standard ASP.NET page(not mobile page) to serve
the
fileupload functionality(since only a simple screen with some text and
file
upload html element are necessary), how do you think?

Anyway, I'll also help you consult some other mobile engineers to see
whether there is anything else we can do here, I'll inform you as soon
as I
get any update.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



==================================================

Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#not
i
f
ications.



Note: The MSDN Managed Newsgroup support offering is for non-urgent
issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each
follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach
the
most efficient resolution. The offering is not appropriate for
situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are
best
handled working with a dedicated Microsoft Support Engineer by
contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.

==================================================


This posting is provided "AS IS" with no warranties, and confers no
rights.



--------------------


Hi,

I am trying to provide the user with a file upload facility on mobile
devices that will support it. So I have tried using the FileUpload
control
in
a device specific section - as follows, but when the form posts back,
the
HasFile proerty is always set to false and the file is nowhere to be
seen.

It would appear that it may be something to do with the fact that the
form
is
rendering without enctype="multipart/form-data" on the form tag. Anyone
any
ideas how I might get this to work ?

<mobile:Form ID="NewForm" runat="server" Title="New Form">

<mobile:DeviceSpecific ID="DeviceSpecific1" Runat="Server">
<Choice>
<FooterTemplate>
<tr>
<td>
<asp:FileUpload ID="fileUpload1"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload2"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload3"
runat="server"></asp:FileUpload>
</td>
</tr>
</FooterTemplate>
</Choice>
</mobile:DeviceSpecific>

......
 
S

Steven Cheng[MSFT]

Thanks for your followup Woodgnome,

For the upload control, I haven't got any known of filename size
limitation(at least not 10 chars). Does this problem only occur for your
mobile devices? I've tested it on standard aspx page and PC boxes and I can
submit long-filename files. Just use the below cose to printout the
filename:
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
Response.Write("<br/>filename: " + FileUpload1.FileName);
}
}

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
Subject: RE: FileUpload Control on Mobile Form
Date: Thu, 13 Sep 2007 03:44:00 -0700
Hi Steven,

Thanks for your posts, this will be helpful if I need to get it working on
other mobile devices later.

I have managed to get it working on a standard html based ASP.NET page for
now.

However, I have now noticed that the the file name part of the file path
seams to be restricted to a maximum of 10 chars. I have tried adding the
maxLength at a custom attribute but this does not seam to have any effect.
Any ideas how I might be able to allow the user to submit longer file names ?

Woodgnome.

P.S. This is on the Windows Mobile 6 Classic Emulator.

Steven Cheng said:
Hi Woodgnome,

Does the further info in my last reply helps? If there is anything else we
can help, please feel free to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
Date: Fri, 31 Aug 2007 04:02:44 GMT
Subject: RE: FileUpload Control on Mobile Form
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
ing-Host: tomcatimport2.phx.gbl 10.201.218.182
Hi Woodgnome,

Are you still focus on this issue? I've just got some new info. I've
discussed with a DEV engineer who has ever worked on a similar issue, here
is a workaround for mobile page to use the fileupload control. See the
following comments

==================================
The reason upload control can't work on mobile page is the result rendered
by mobile page is lacking a form property: enctype="multipart/form-data".

To inject this property you can inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method. The override method is
something link below:

public class ChtmlMobileMultipartTextWriter :
System.Web.UI.MobileControls.Adapters.ChtmlMobileTextWriter
{
public ChtmlMobileMultipartTextWriter(System.IO.TextWriter writer,
MobileCapabilities device)
: base(writer, device)
{
}

public override void WriteBeginTag(string tag)
{
if (tag == null)
{
throw new ArgumentNullException("tag");
}

base.WriteBeginTag(tag);

if (tag.Equals("form"))
{
WriteAttribute("enctype", "multipart/form-data");
}
}
}

==============================

Hope this still helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
X-Tomcat-ID: 34003249
References: <[email protected]>
<B5gE#[email protected]>
<[email protected]>
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
From: (e-mail address removed) (Steven Cheng[MSFT])
Organization: Microsoft
Date: Wed, 29 Aug 2007 03:00:00 GMT
Subject: RE: FileUpload Control on Mobile Form
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
Lines: 120
Path: TK2MSFTNGHUB02.phx.gbl
Xref: TK2MSFTNGHUB02.phx.gbl
microsoft.public.dotnet.framework.aspnet.webcontrols:2222
NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway, I'm
still doing some further research on this and will inform you if I get any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.





--------------------
Xref: TK2MSFTNGHUB02.phx.gbl
microsoft.public.dotnet.framework.aspnet.webcontrols:2217
NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but
the
intention was to make the pages available to more devices at a later date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.



:

Hi Woodgnome,

Regarding on the ASP.NET mobile page fileuploading issue, I've
performed
some local tests and did found the same behavior as you mentioned. It
seems
the Mobile Form doesn't allow us to insert our custom attributes into
it
like a standard htmlForm control. I've also tried manually add the
"enctype="multipart/form-data" " attribute into the mobile form and it
was
also ignored and runtime. BTW, for mobile devices, I notice that few
WAP
or xhtml mp devices support file upload element,

http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=intro

so are your web application's target devices HTML enabled? If so,
maybe
you can consider use a standard ASP.NET page(not mobile page) to serve
the
fileupload functionality(since only a simple screen with some text and
file
upload html element are necessary), how do you think?

Anyway, I'll also help you consult some other mobile engineers to see
whether there is anything else we can do here, I'll inform you as soon
as I
get any update.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



==================================================

Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#not
i
f
ications.



Note: The MSDN Managed Newsgroup support offering is for non-urgent
issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each
follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach
the
most efficient resolution. The offering is not appropriate for
situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are
best
handled working with a dedicated Microsoft Support Engineer by
contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.

==================================================


This posting is provided "AS IS" with no warranties, and confers no
rights.



--------------------


Hi,

I am trying to provide the user with a file upload facility on mobile
devices that will support it. So I have tried using the FileUpload
control
in
a device specific section - as follows, but when the form posts back,
the
HasFile proerty is always set to false and the file is nowhere to be
seen.

It would appear that it may be something to do with the fact that the
form
is
rendering without enctype="multipart/form-data" on the form tag.
Anyone
any
ideas how I might get this to work ?

<mobile:Form ID="NewForm" runat="server" Title="New Form">

<mobile:DeviceSpecific ID="DeviceSpecific1" Runat="Server">
<Choice>
<FooterTemplate>
<tr>
<td>
<asp:FileUpload ID="fileUpload1"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload2"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload3"
runat="server"></asp:FileUpload>
</td>
</tr>
</FooterTemplate>
</Choice>
</mobile:DeviceSpecific>

......
 
W

Woodgnome

Steven,

Thanks for the reply.

It's just on the Windows Mobile 6 Classic Emulator. It works OK in a normal
browser.

The fileupload.HasFile property is set to false on postback.

I am guessing that maxLength attribute on the rendered <input> tag is
defaulting to 10 on the mobile device, but setting on rendering doesnt seam
to have any effect.

Woodgnome.

Steven Cheng said:
Thanks for your followup Woodgnome,

For the upload control, I haven't got any known of filename size
limitation(at least not 10 chars). Does this problem only occur for your
mobile devices? I've tested it on standard aspx page and PC boxes and I can
submit long-filename files. Just use the below cose to printout the
filename:
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
Response.Write("<br/>filename: " + FileUpload1.FileName);
}
}

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
Subject: RE: FileUpload Control on Mobile Form
Date: Thu, 13 Sep 2007 03:44:00 -0700
Hi Steven,

Thanks for your posts, this will be helpful if I need to get it working on
other mobile devices later.

I have managed to get it working on a standard html based ASP.NET page for
now.

However, I have now noticed that the the file name part of the file path
seams to be restricted to a maximum of 10 chars. I have tried adding the
maxLength at a custom attribute but this does not seam to have any effect.
Any ideas how I might be able to allow the user to submit longer file names ?

Woodgnome.

P.S. This is on the Windows Mobile 6 Classic Emulator.

Steven Cheng said:
Hi Woodgnome,

Does the further info in my last reply helps? If there is anything else we
can help, please feel free to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
Date: Fri, 31 Aug 2007 04:02:44 GMT
Subject: RE: FileUpload Control on Mobile Form
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
ing-Host: tomcatimport2.phx.gbl 10.201.218.182

Hi Woodgnome,

Are you still focus on this issue? I've just got some new info. I've
discussed with a DEV engineer who has ever worked on a similar issue, here
is a workaround for mobile page to use the fileupload control. See the
following comments

==================================
The reason upload control can't work on mobile page is the result rendered
by mobile page is lacking a form property: enctype="multipart/form-data".

To inject this property you can inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method. The override method is
something link below:

public class ChtmlMobileMultipartTextWriter :
System.Web.UI.MobileControls.Adapters.ChtmlMobileTextWriter
{
public ChtmlMobileMultipartTextWriter(System.IO.TextWriter writer,
MobileCapabilities device)
: base(writer, device)
{
}

public override void WriteBeginTag(string tag)
{
if (tag == null)
{
throw new ArgumentNullException("tag");
}

base.WriteBeginTag(tag);

if (tag.Equals("form"))
{
WriteAttribute("enctype", "multipart/form-data");
}
}
}

==============================

Hope this still helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
X-Tomcat-ID: 34003249
References: <[email protected]>
<B5gE#[email protected]>
<[email protected]>
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
From: (e-mail address removed) (Steven Cheng[MSFT])
Organization: Microsoft
Date: Wed, 29 Aug 2007 03:00:00 GMT
Subject: RE: FileUpload Control on Mobile Form
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
Lines: 120
Path: TK2MSFTNGHUB02.phx.gbl
Xref: TK2MSFTNGHUB02.phx.gbl
microsoft.public.dotnet.framework.aspnet.webcontrols:2222
NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway,
I'm
still doing some further research on this and will inform you if I get
any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no
rights.





--------------------
Xref: TK2MSFTNGHUB02.phx.gbl
microsoft.public.dotnet.framework.aspnet.webcontrols:2217
NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but
the
intention was to make the pages available to more devices at a later
date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.



:

Hi Woodgnome,

Regarding on the ASP.NET mobile page fileuploading issue, I've
performed
some local tests and did found the same behavior as you mentioned. It
seems
the Mobile Form doesn't allow us to insert our custom attributes into
it
like a standard htmlForm control. I've also tried manually add the
"enctype="multipart/form-data" " attribute into the mobile form and it
was
also ignored and runtime. BTW, for mobile devices, I notice that few
WAP
or xhtml mp devices support file upload element,

http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=intro

so are your web application's target devices HTML enabled? If so,
maybe
you can consider use a standard ASP.NET page(not mobile page) to serve
the
fileupload functionality(since only a simple screen with some text and
file
upload html element are necessary), how do you think?

Anyway, I'll also help you consult some other mobile engineers to see
whether there is anything else we can do here, I'll inform you as soon
as I
get any update.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



==================================================

Get notification to my posts through email? Please refer to


http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#not
i
f
ications.



Note: The MSDN Managed Newsgroup support offering is for non-urgent
issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each
follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach
the
most efficient resolution. The offering is not appropriate for
situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are
best
handled working with a dedicated Microsoft Support Engineer by
contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.

==================================================


This posting is provided "AS IS" with no warranties, and confers no
rights.



--------------------


Hi,

I am trying to provide the user with a file upload facility on mobile
devices that will support it. So I have tried using the FileUpload
control
 
W

Walter Wang [MSFT]

Hi Woodgnome,

Since Steven is out of office for several days, I will continue work with
you on this post.

Let me first summarize the issue so far: you're now able to make the
FileUpload work on mobile WebForm but the file name length is restricted to
10.

Would you please send me a copy of your test web project along with
detailed configuration (emulator, browser version) to me? I will try to
reproduce the issue on my side and see if we could find the root cause.
Thanks for the trouble.


Regards,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================

This posting is provided "AS IS" with no warranties, and confers no rights.
 
W

Woodgnome

Hi Walter,

Thanks for the help. It's easy to reproduce just create a new web site, add
a normal web page, add a file upload control and an asp link button and add
the code suggested by Steven to the on click event of the link button.

The emulator is the one include in the Windows Mobile 6 Professional SDK -
Windows Mobile 6 Classic Emulator and the browser is the one included with
the emulator.

When the file name is greater than 10 chars no repsonse is returned because
the fileuplad.HasFile property is set to false on postback.

It works OK in IE on a normal desktop.

I have included the code from the test site below :

Thanks.
Woodgnome.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"
Inherits="_Default" ValidateRequest="false"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUpload ID="FileUpload1" runat="server" />
<br />
<br />
<asp:LinkButton ID="LinkButton1" runat="server"
OnClick="LinkButton1_Click">OK</asp:LinkButton>
</div>
</form>
</body>
</html>

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void LinkButton1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
Response.Write("<br/>filename: " + FileUpload1.FileName);
}
}
}
 
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W

Walter Wang [MSFT]

Hi Woodgnome,

So you're not using MobileWebForm? I thought we're discussing FileUpload on
MobileWebForm.

If you're using mobile device to access the normal WebForm, I think many
functions are not supported and the result is unexpected. Though I haven't
find any document described this 10 characters length limit of uploaded
file name.


Regards,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================

This posting is provided "AS IS" with no warranties, and confers no rights.
 
T

T.Jeywin Lizy

Hi Steven
You have suggested to inject the property enctype="multipart/form-data".
and inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method.

Please let me know how I should use this class with FileUpload control,
where and what should be the code along with the below code you have given.

My requirement is --> my web application has to upload the file the user
selects in his PDA(IE Mobile Ver.5).

Waiting in anticipation.Please help asap.

Thanks
T.Jeywin Lizy



Steven Cheng said:
Hi Woodgnome,

Are you still focus on this issue? I've just got some new info. I've
discussed with a DEV engineer who has ever worked on a similar issue, here
is a workaround for mobile page to use the fileupload control. See the
following comments

==================================
The reason upload control can't work on mobile page is the result rendered
by mobile page is lacking a form property: enctype="multipart/form-data".

To inject this property you can inherit Html/Chtml/XhtmlMobileTextWriter
class and override their WriteBeginTag method. The override method is
something link below:

public class ChtmlMobileMultipartTextWriter :
System.Web.UI.MobileControls.Adapters.ChtmlMobileTextWriter
{
public ChtmlMobileMultipartTextWriter(System.IO.TextWriter writer,
MobileCapabilities device)
: base(writer, device)
{
}

public override void WriteBeginTag(string tag)
{
if (tag == null)
{
throw new ArgumentNullException("tag");
}

base.WriteBeginTag(tag);

if (tag.Equals("form"))
{
WriteAttribute("enctype", "multipart/form-data");
}
}
}

==============================

Hope this still helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.


--------------------
X-Tomcat-ID: 34003249
References: <[email protected]>
MIME-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
From: (e-mail address removed) (Steven Cheng[MSFT])
Organization: Microsoft
Date: Wed, 29 Aug 2007 03:00:00 GMT
Subject: RE: FileUpload Control on Mobile Form
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
Lines: 120
Path: TK2MSFTNGHUB02.phx.gbl
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2222
NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122

Hi Woodgnome,

Thanks for your reply.

Yes, a standard html based ASP.NET page will save much effort. Anyway, I'm
still doing some further research on this and will inform you if I get any
new information helpful.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.





--------------------
Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.dotnet.framework.aspnet.webcontrols:2217
NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols

Steven,

Thanks for the reply. The initial target devices are HTML enabled - but the
intention was to make the pages available to more devices at a later date.
I will investigate using a standard asp.net page for now.

Thanks.
Woodgnome.



:

Hi Woodgnome,

Regarding on the ASP.NET mobile page fileuploading issue, I've performed
some local tests and did found the same behavior as you mentioned. It seems
the Mobile Form doesn't allow us to insert our custom attributes into it
like a standard htmlForm control. I've also tried manually add the
"enctype="multipart/form-data" " attribute into the mobile form and it was
also ignored and runtime. BTW, for mobile devices, I notice that few WAP
or xhtml mp devices support file upload element,

http://www.developershome.com/wap/wapUpload/wap_upload.asp?page=intro

so are your web application's target devices HTML enabled? If so, maybe
you can consider use a standard ASP.NET page(not mobile page) to serve the
fileupload functionality(since only a simple screen with some text and file
upload html element are necessary), how do you think?

Anyway, I'll also help you consult some other mobile engineers to see
whether there is anything else we can do here, I'll inform you as soon as I
get any update.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



==================================================

Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#noti
f
ications.



Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscriptions/support/default.aspx.

==================================================


This posting is provided "AS IS" with no warranties, and confers no rights.



--------------------


Hi,

I am trying to provide the user with a file upload facility on mobile
devices that will support it. So I have tried using the FileUpload control
in
a device specific section - as follows, but when the form posts back, the
HasFile proerty is always set to false and the file is nowhere to be seen.

It would appear that it may be something to do with the fact that the form
is
rendering without enctype="multipart/form-data" on the form tag. Anyone
any
ideas how I might get this to work ?

<mobile:Form ID="NewForm" runat="server" Title="New Form">

<mobile:DeviceSpecific ID="DeviceSpecific1" Runat="Server">
<Choice>
<FooterTemplate>
<tr>
<td>
<asp:FileUpload ID="fileUpload1"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload2"
runat="server"></asp:FileUpload>
</br>
<asp:FileUpload ID="fileUpload3"
runat="server"></asp:FileUpload>
</td>
</tr>
</FooterTemplate>
</Choice>
</mobile:DeviceSpecific>

......
 
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V

VK

sir can u please explain how to use this custructor class with the mobile
form .cs file. I am not able to do that.
Thanks
 

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