Hi Ken,
Many thanks for taking the time to post your response, it really is
appreciated.
I followed your instructions pretty much to the letter but I'm still
coming up with an error message, I'll try and be as detailed as I can
with what I have done so you may be able to spot something obvious that I
can't see.
I created a database exactly as you said, the only change I made was to
upload it into the 'databases' folder, and not a folder called
'App_Data', simply because when I FTP into my site the two folders I see
are:
databases
www
And I didn't want to change anything with the 'databases' folder as that
currently has the Read, WRITE and Execute permissions, but to be fair
that shouldn't make much difference because I also changed the line of
code in three places which references 'App_Data/imagedb.mdb' to
'databases/imagedb.mdb'
That was the only change I made so I then uploaded the 'imagedb.mdb' file
to the 'databases' folder, and I uploaded both the 'upload.aspx' and
'imagefetch.aspx' files to the www/gallery folder - so far so good.
I then opened the site and navigated to the 'gallery' link from my home
page, the page displayed correctly giving me a text box with a browse
button, and underneath an 'upload' button and a 'view images' button.
I selected a gif file from my desktop and clicked 'upload', after a few
seconds the following error page was displayed:
--------------------------------------------------------------------
Server Error in '/' Application.
--------------------------------------------------------------------------------
'd:\websites\swin644498\www\gallery\databases\imagedb.mdb' is not a valid
path. Make sure that the path name is spelled correctly and that you are
connected to the server on which the file resides.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.
Exception Details: System.Data.OleDb.OleDbException:
'd:\websites\swin644498\www\gallery\databases\imagedb.mdb' is not a valid
path. Make sure that the path name is spelled correctly and that you are
connected to the server on which the file resides.
Source Error:
Line 68: pms("@FileData").Value = fileData
Line 69:
Line 70: con.Open()
Line 71: cmd.ExecuteNonQuery()
Line 72: con.Close()
Source File: d:\websites\swin644498\www\gallery\upload.aspx Line: 70
Stack Trace:
[OleDbException (0x80004005):
'd:\websites\swin644498\www\gallery\databases\imagedb.mdb' is not a valid
path. Make sure that the path name is spelled correctly and that you are
connected to the server on which the file resides.]
System.Data.OleDb.OleDbConnection.ProcessResults(Int32 hr) +20
System.Data.OleDb.OleDbConnection.InitializeProvider() +57
System.Data.OleDb.OleDbConnection.Open() +203
ASP.upload_aspx.btnUpload_Click(Object sender, EventArgs e) in
d:\websites\swin644498\www\gallery\upload.aspx:70
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1292
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
ASP.NET Version:1.1.4322.2032
----------------------------------------------------------------------------------------------------------------------
Now I also have a discussion forum on my site, which I had to make a
minor adjustement to in order to post the messages to the database, I
remember the original code indicated something similar to your code in
that it pointed to 'databases/forumdb.mdb' but I had to change this
slightly to read: '../databases/forumdb.mdb' and that did the trick.
So, logically I tried the same thing with your code and changed the three
references to 'databases/imagedb.mdb' to '../databases/imagedb.mdb'. I
went through the same steps to navigate to the gallery link from my home
page and this time I received the following error message:
----------------------------------------------------------------------------------------------------------------------
Server Error in '/' Application.
--------------------------------------------------------------------------------
'd:\websites\swin644498\www\databases\imagedb.mdb' is not a valid path.
Make sure that the path name is spelled correctly and that you are
connected to the server on which the file resides.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.
Exception Details: System.Data.OleDb.OleDbException:
'd:\websites\swin644498\www\databases\imagedb.mdb' is not a valid path.
Make sure that the path name is spelled correctly and that you are
connected to the server on which the file resides.
Source Error:
Line 68: pms("@FileData").Value = fileData
Line 69:
Line 70: con.Open()
Line 71: cmd.ExecuteNonQuery()
Line 72: con.Close()
Source File: d:\websites\swin644498\www\gallery\upload.aspx Line: 70
Stack Trace:
[OleDbException (0x80004005):
'd:\websites\swin644498\www\databases\imagedb.mdb' is not a valid path.
Make sure that the path name is spelled correctly and that you are
connected to the server on which the file resides.]
System.Data.OleDb.OleDbConnection.ProcessResults(Int32 hr) +20
System.Data.OleDb.OleDbConnection.InitializeProvider() +57
System.Data.OleDb.OleDbConnection.Open() +203
ASP.upload_aspx.btnUpload_Click(Object sender, EventArgs e) in
d:\websites\swin644498\www\gallery\upload.aspx:70
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1292
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
ASP.NET Version:1.1.4322.2032
-----------------------------------------------------------------------------------------------------------------------
Now if you look carefully at the line at the top which references the
directory path, you will notice it now points to:
'd:\websites\swin644498\www\databases\imagedb.mdb' - instead of
'd:\websites\swin644498\www\gallery\databases\imagedb.mdb'
Which indicates I am making progress by adding the ../ to the begining of
the database reference line, but because it's still pointing to
'www\databases' instead of just 'databases' I tried to go back one more
level by changing the reference to the following:
'../../databases/forumdb.mdb'
Again I navigated to the gallery link from my home page and went through
the steps to select a file and click the upload button, but this time the
following error was displayed:
-------------------------------------------------------------------------------------------------------------------------
Server Error in '/' Application.
--------------------------------------------------------------------------------
Cannot use a leading .. to exit above the top directory.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Cannot use a leading .. to
exit above the top directory.
Source Error:
Line 35: '?article=2003031201&page=1
Line 36: Dim strConnection As String
Line 37: strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
Line 38: "Data Source=" _
Line 39: & Server.MapPath("../../databases/imagedb.mdb")
Source File: d:\websites\swin644498\www\gallery\upload.aspx Line: 37
Stack Trace:
[HttpException (0x80004005): Cannot use a leading .. to exit above the
top directory.]
System.Web.Util.UrlPath.Reduce(String path) +700
System.Web.Util.UrlPath.Combine(String basepath, String relative) +296
System.Web.HttpRequest.MapPath(String virtualPath, String
baseVirtualDir, Boolean allowCrossAppMapping) +201
System.Web.HttpServerUtility.MapPath(String path) +60
ASP.upload_aspx.btnUpload_Click(Object sender, EventArgs e) in
d:\websites\swin644498\www\gallery\upload.aspx:37
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1292
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
ASP.NET Version:1.1.4322.2032
----------------------------------------------------------------------------------------------------------------
And now I am stumped once more, logically I have tried everything I can
think of and again I'm left with a bruised forehead after banging against
the wall too many times, the difference this time is not only have I
started to go gray but my hair is actually falling out now.
PLEASE HELP !!!!
Thanks in advance for any help you may be able to offer.
Kind Regards,
Wayne
Ken Cox said:
Hi Wayne,
Okay, here's the code that should get you going. You'll need an Access
database (called imagedb.mdb) in the App_Data folder with this schema:
id: AutoNumber
FileName:Text
FileSize: Number (long integer)
ContentType: Text
FileData: OLE Object
There are two ASP.NET files. Upload.aspx handles the upload and display.
Imagefetch.aspx is a helper page that provides the image to the
datagrid.
This is rough code - barebones stuff with no error checking to speak of.
Most of the code is ripped off from other articles, especially from
File Uploading to Access Database using ASP.NET
by Faisal Khan.
http://www.stardeveloper.com/articles/display.html?article=2003031201&page=1
Anyway, let us know if it helps?
Ken
Microsoft MVP [ASP.NET]
-- upload.aspx
<%@ page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub btnDisplay_Click _
(ByVal sender As Object, ByVal e As System.EventArgs)
' Gets the image data and displays it
' in the datagrid
Dim strConnection As String
strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" _
& Server.MapPath("App_Data/imagedb.mdb")
Dim con As New Data.OleDb.OleDbConnection(strConnection)
Dim cmdtext As String = "SELECT ID, FileName," _
& " FileSize, ContentType FROM Files"
Dim cmd As New Data.OleDb.OleDbCommand(cmdtext, con)
Dim ds As New Data.DataSet
Dim da As New Data.OleDb.OleDbDataAdapter _
(cmdtext, strConnection)
da.Fill(ds)
dg2.DataSource = ds
dg2.DataBind()
End Sub
Protected Sub btnUpload_Click _
(ByVal sender As Object, ByVal e As System.EventArgs)
' Puts uploaded file in Access database
' Adapted for VB by Ken Cox [MVP] from
' File Uploading to Access Database using ASP.NET
' by Faisal Khan.
'
http://www.stardeveloper.com/articles/display.html
'?article=2003031201&page=1
Dim strConnection As String
strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" _
& Server.MapPath("App_Data/imagedb.mdb")
If Request.Files.Count > 0 Then
Dim files As HttpFileCollection
Dim afile As HttpPostedFile
files = Request.Files
afile = files(0)
Dim contentType As String = afile.ContentType
Dim filename As String = ""
Dim filelength As Integer = afile.ContentLength
Dim fileData As Byte() = New Byte(filelength) {}
Dim lastpos As Integer
lastpos = afile.FileName.LastIndexOf("\")
filename = afile.FileName.Substring(lastpos + 1)
afile.InputStream.Read(fileData, 0, filelength)
Dim con As New Data.OleDb.OleDbConnection(strConnection)
Dim cmdtext As String = "INSERT INTO Files(FileName," & _
" FileSize, ContentType, FileData) VALUES " & _
" (@FileName, @FileSize, @ContentType, @FileData)"
Dim cmd As New Data.OleDb.OleDbCommand(cmdtext, con)
Dim pms As Data.OleDb.OleDbParameterCollection
pms = cmd.Parameters
pms.Add("@FileName", Data.OleDb.OleDbType.VarChar, 50)
pms.Add("@FileSize", Data.OleDb.OleDbType.Integer)
pms.Add("@ContentType", Data.OleDb.OleDbType.VarChar, 50)
pms.Add("@FileData", Data.OleDb.OleDbType.VarBinary)
pms("@FileName").Value = filename
pms("@FileSize").Value = filelength
pms("@ContentType").Value = contentType
pms("@FileData").Value = fileData
con.Open()
cmd.ExecuteNonQuery()
con.Close()
End If
End Sub
</script>
<html xmlns="
http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Upload and View Images in MS Access</title>
</head>
<body>
<form id="Form1" runat="server" enctype="multipart/form-data">
<input name="thefile" type="file"><br>
<br />
<asp:button id="btnUpload" runat="server" text="Upload"
onclick="btnUpload_Click" /> <br />
<br />
<asp:button id="btnDisplay" runat="server"
onclick="btnDisplay_Click" text="View Images" /> <br />
<br />
<asp:datagrid id="dg2" runat="server"
autogeneratecolumns="False">
<columns>
<asp:boundcolumn datafield="filename"
headertext="Filename" readonly="True"></asp:boundcolumn>
<asp:boundcolumn datafield="Filesize"
headertext="Filesize" readonly="True"></asp:boundcolumn>
<asp:boundcolumn datafield="contenttype"
headertext="Contenttype" readonly="True"></asp:boundcolumn>
<asp:templatecolumn headertext="Image">
<itemtemplate>
<asp:image runat="server" imageurl='<%#
"imagefetch.aspx?id=" & DataBinder.Eval(Container, "DataItem.id") %>' />
</itemtemplate>
</asp:templatecolumn>
</columns>
</asp:datagrid>
<br />
</form>
</body>
</html>
-- imagefetch.aspx
<%@ Page Language="VB" %>
<script runat="server">
Protected Sub Page_Load _
(ByVal sender As Object, ByVal e As System.EventArgs)
' Gets the image from the Access
' Database for inclusion in another page
' Adapted from an MS KB article by Ken Cox [MVP]
'
Dim recno As Integer
If Request("id") = "" Then
Exit Sub
End If
recno = Request("id")
Dim strConnection As String
strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" _
& Server.MapPath("App_Data/imagedb.mdb")
Dim con As New Data.OleDb.OleDbConnection _
(strConnection)
Dim da As New Data.OleDb.OleDbDataAdapter _
("Select filedata From files where id=" & _
recno.ToString, con)
Dim MyCB As New Data.OleDb.OleDbCommandBuilder(da)
Dim ds As New Data.DataSet()
con.Open()
da.Fill(ds, "images")
Dim myRow As Data.DataRow
myRow = ds.Tables("images").Rows(0)
Dim MyData() As Byte
MyData = myRow("filedata")
Response.Buffer = True
Response.ContentType = "Image/JPEG"
Response.BinaryWrite(MyData)
MyCB = Nothing
ds = Nothing
da = Nothing
con.Close()
con = Nothing
End Sub
</script>
I've come up against a major headache that I can't seem to find a
solution for but I'm sure there must be a workaround and I would really
be grateful of any help.
I'm currently building a web site for a small club I belong to and one
of the features I would like to include is the ability to allow users
to upload image files.
unfortunately the servers web root www folder only allows READ and
EXECUTE permissions, which makes it impossible to allow a user to
upload a gif/jpeg image. When I FTP into the site however, I can
immediately see two folders:
databases
www
the www folder is the root folder and all web pages need to be placed
there, but the databases folder does have Read, WRITE and Execute
permissions and I have been reliably informed that some ASP.NET code
would allow a user to send a picture file to an Access database in this
folder, the problem I have is not knowing how to reference it because
it's not directly accessible from the Internet - i.e.
www.website.co.uk/databases would not work.
The server is running ASP.NET 1.1 and the permissions setup has to stay
the way it is, I'm not able to get my host to change the permissions on
the root folder so I have to try and make use of the databases folder
instead. For arguments sake lets also assume I already have a simple
Access database called images.mdb with one table called Images, which
in turn contains two fields, one called ID (Autonumber) (Primary Key)
and another called images (OLE Object)
What I would really like, if possible, is a very simple sample page
with a text box and a Browse button, with a second button to 'Upload'
the file once selected, plus any supporting pages that may be required
to complete the operation, i.e.:
selectfile.aspx (simple page to select image file and send to database)
uploadfile.aspx (works behind the scenes to transfer the file)
confirmation.aspx (a confirmation page to indicate the transfer either
succeeded or failed)
I'm not a natural programmer by any stretch of the imagination, which
is why I'm being a bit cheeky and asking for a very simple layout to
accomplish this task, or a straight forward dummies tutorial which
takes into consideration the problem with uploading to a database
outside of the root web.
If anybody can help me solve this problem, I will forever be indebted
to you. I have searched the Internet for over a week and remarkably I
cannot find an answer to this problem, it's now driving me nuts - I
just want to solve this so I can move on with the rest of the site
design.
Any help would be greatly appreciated.
Many thanks in advance
Wayne
