TreeView not expanding in some browsers

[mfr]

Hi,

I have a treeview control in my default.master linked to a web.sitemap file.
On all of the client machines I have access to, the treeview works correctly
but a small number of the website's users are complaining that they cannot
expand the tree.

I have been told that the page loads but has a message in bottom left corner
"Page loaded with errors". The user's are using IE5.5. When they click on the
arrows to expand the tree nothing happens.

I initially suspected the security and or Java settings on the affected
browsers but have not been able to find any obvious settings that are
different to mine. I've aso tried setting the website as a trusted site.

The user's have contacted their own support staff who have checked the
browser and are saying the fault is with the website.

Any advise on where to go from here would be appreciate. Is their a
particular browser setting I should check?

The website is running under IIS 6, developed using C# and ASP.NET 2.0.

Regards,
Dave.

 

[Walter Wang [MSFT]]

Hi Dave,

Thank you for your post.

When there're "Page loaded with errors" in bottom left corner, you can
double click on it and see detailed error description. Also, you may turn
off "Show friendly HTTP error messages" in IE's advanced options to see if
it reports more information.

I think it's more likely a security settings in IE which may prevents the
javascript to run successfully. Would you mind telling me the IE version
and its security settings? Thanks.


Regards,
Walter Wang
Microsoft Online Community Support

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[mfr]

An interesting point I've just discovered. As a temporary measure, to allow
the users to continue working, I've set the expand depth so that all branches
are fully expanded when the page loads. These branches can now be closed and
re-expaned again without problem - ie the tree works correctly.

The browser is IE5.5. The website has been added to the trusted zone (in an
attempt to fix this problem) using the default security settings.

The error details from clicking on the 'page loaded with errors' gave the
following details.

-- Line: 88
-- Char: 9
-- Error : The download of the specified resource has failed.
-- Code: 0

And, incase this is significant - We are using sessions for state
management, I have had to add the following code to convert the absolute
paths back to relative paths.

void Data_Bound(Object sender, TreeNodeEventArgs e)
{
String url = e.Node.NavigateUrl;

int len = Request.ApplicationPath.Length;

if (url.Length > len)
{
// we need to remove the application name from the start on the url
String newUrl = "~";

// if len is one then application name would be "/" otherwise it
contain two slashes ( "/wsrp/" );
if (len > 1)
newUrl += url.Substring(len);
else
newUrl += url;

e.Node.NavigateUrl = newUrl;
}
}

 

[Walter Wang [MSFT]]

Hi Dave,

Thank you for your update.

By digging into the javascript generated by the TreeView control, it's
using the XMLHttpRequest object, aka Ajax. I suspect it's related to
different MSXML version. You can check out following website for how to
determine installed msxml version:

http://www.perfectxml.com/msxmlAnswers.asp?Row_ID=16

This is only an possible cause, please feel free to post here if it doesn't
work.

Also, you may turn off the "EnableClientScript" option of treeview.

Regards,
Walter Wang
Microsoft Online Community Support

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[Walter Wang [MSFT]]

Hi Dave,

I am interested in this issue. Would you mind letting me know the result of
the suggestions? If you need further assistance, feel free to let me know.
I will be more than happy to be of assistance.

Have a great day!

Regards,
Walter Wang
Microsoft Online Community Support

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[mfr]

Walter,
Sorry, I was out for a couple of days so am just following up your
suggestions now.

Regards,
Dave.

 

[mfr]

Walter,

Our user has run the link as requested.

The following are installed on her machine.

Microsoft.XMLDOM
Msxml2.DOMDocument
Msxml2.DOMDocument.3.0

The following are NOT installed on her machine.

Msxml2.DOMDocument.2.6
Msxml2.DOMDocument.4.0

Regards,
Dave.

 

[Walter Wang [MSFT]]

Hi Dave,

Thank you for your update.

It seems the MSXML is ok and it might not be related. Would you please help
me clarify following points?
1) You've said that some clients are ok, does they have the same version of
IE and MSXML installed?

Also, would you please help me do following test to see if it works:
1) On your dev box, create a simple WebForm with a TreeView control and
with some pre-defined tree nodes, do not bind it to any DataSource.
2) Run the WebForm on your dev box and save the WebForm as a html file
using type "Web Page, complete (*.htm;*.html)". This will create an HTML
file with a subfolder contains the required javascript files.
3) Copy the html file with its related files to the system which has
problem expanding the nodes, and see if it works. The image may not render
correctly since the resources didn't get saved but it's ok.

If the nodes didn't get expanded or collapsed correctly, we can now know
which exact line caused the error in the javascript file.

I understand that this may be a lot of information to ask for at one time.
However, by collecting this information now, it will help us move more
quickly toward a solution.

Regards,
Walter Wang
Microsoft Online Community Support

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[mfr]

Walter,

A user that has a working system has all versions of MSXML installed.
However, I don't know if all users that have a working tree have all versions
installed.

I added a simple web form, containing a treeview, onto our website and asked
one of the affect users to try it. The tree didn't work but an error was
generated

"Error, object expected, Line 287, code 0 char 1"

This is line 287....

WebForm_InitCallback();var TreeView1_Data = new Object();

I hope this helps.

I'll post the html page in the next post.

Regards,
Dave.

 

[mfr]

This is the html file that was generated from the simple aspx page containing
a treeview.

----------------------------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<!-- saved from
url=(0065)http://localhost/wsrp/(S(01vavxnemahqmuvpiwrk3hrd))/treetest.aspx
-->
<HTML xmlns="http://www.w3.org/1999/xhtml"><HEAD><TITLE>Untitled Page</TITLE>
<META http-equiv=Content-Type content="text/html; charset=utf-8"><LINK
href="TreeViewTest_files/default.css" type=text/css rel=stylesheet>
<STYLE type=text/css>.TreeView1_0 {
TEXT-DECORATION: none
}
</STYLE>

<META content="MSHTML 6.00.2900.2873" name=GENERATOR></HEAD>
<BODY>
<FORM id=form1 name=form1 action=treetest.aspx method=post>
<DIV><INPUT id=TreeView1_ExpandState type=hidden value=ccnnnnnnncnnnnnnn
name=TreeView1_ExpandState> <INPUT id=TreeView1_SelectedNode type=hidden
name=TreeView1_SelectedNode> <INPUT id=__EVENTTARGET type=hidden
name=__EVENTTARGET> <INPUT id=__EVENTARGUMENT type=hidden
name=__EVENTARGUMENT>
<INPUT id=TreeView1_PopulateLog type=hidden name=TreeView1_PopulateLog>
<INPUT
id=__VIEWSTATE type=hidden
value=/wEPDwUKMTQ2ODY5MjA1MA9kFgICAw9kFgICAQ88KwAJAgAPFgYeDU5ldmVyRXhwYW5kZWRkHgxTZWxlY3RlZE5vZGVkHglMYXN0SW5kZXgCEWQIFCsABmQUKwACZBQrAAVkFCsAAmQUKwAFZBQrAAIWAh4IRXhwYW5kZWRnZBQrAAIWAh8DZ2QUKwACFgIfA2dkFCsAAhYCHwNnZBQrAAIWAh8DZ2QUKwACFgIfA2dkFCsAAhYCHwNnZBQrAAJkFCsABWQUKwACFgIfA2dkFCsAAhYCHwNnZBQrAAIWAh8DZ2QUKwACFgIfA2dkFCsAAhYCHwNnZBQrAAIWAh8DZ2QUKwACFgIfA2dkZBgBBR5fX0NvbnRyb2xzUmVxdWlyZVBvc3RCYWNrS2V5X18WAQUJVHJlZVZpZXcx3ZLahNK2yNq1SuImiwRrgcepMsA=
name=__VIEWSTATE> </DIV>
<SCRIPT type=text/javascript>
<!--
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
// -->
</SCRIPT>

<SCRIPT src="TreeViewTest_files/WebResource.axd"
type=text/javascript></SCRIPT>

<SCRIPT
src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(1).axd"
type=text/javascript></SCRIPT>

<SCRIPT>
<!--
function TreeView_PopulateNodeDoCallBack(context,param) {

WebForm_DoCallback(context.data.treeViewID,param,TreeView_ProcessNodeData,context,TreeView_ProcessNodeData,false);
}
// -->
</SCRIPT>

<DIV><A
href="http://localhost/wsrp/(S(01vavxnemahqmuvpiwrk3hrd))/treetest.aspx#TreeView1_SkipLink"><IMG
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
height=0 alt="Skip Navigation Links."
src="TreeViewTest_files/WebResource.gif"
width=0></A>
<DIV id=TreeView1>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD><A id=TreeView1n0

href="javascript:TreeView_ToggleNode(TreeView1_Data,0,TreeView1n0,'%20',TreeView1n0Nodes)"><IMG
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px;
BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px"
alt="Expand Cars"

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(1).gif"></A></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t0
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t0');"

href="javascript:__doPostBack('TreeView1','sCars')">Cars</A></TD></TR></TBODY></TABLE>
<DIV id=TreeView1n0Nodes style="DISPLAY: none">
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><A id=TreeView1n1

href="javascript:TreeView_ToggleNode(TreeView1_Data,1,TreeView1n1,'%20',TreeView1n1Nodes)"><IMG
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px;
BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px"
alt="Expand Expensive"

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(1).gif"></A></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t1
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t1');"

href="javascript:__doPostBack('TreeView1','sCars\\Expensive')">Expensive</A></TD></TR></TBODY></TABLE>
<DIV id=TreeView1n1Nodes style="DISPLAY: none">
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t2
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t2');"

href="javascript:__doPostBack('TreeView1','sCars\\Expensive\\Jaguar')">Jaguar</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t3
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t3');"

href="javascript:__doPostBack('TreeView1','sCars\\Expensive\\BMW')">BMW</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t4
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t4');"

href="javascript:__doPostBack('TreeView1','sCars\\Expensive\\Rolls%20Royce')">Rolls
Royce</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t5
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t5');"

href="javascript:__doPostBack('TreeView1','sCars\\Expensive\\Skoda')">Skoda</A></TD></TR></TBODY></TABLE></DIV>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t6
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t6');"

href="javascript:__doPostBack('TreeView1','sCars\\Ford')">Ford</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t7
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t7');"

href="javascript:__doPostBack('TreeView1','sCars\\Vauxhall')">Vauxhall</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t8
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t8');"

href="javascript:__doPostBack('TreeView1','sCars\\Toyota')">Toyota</A></TD></TR></TBODY></TABLE></DIV>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD><A id=TreeView1n9

href="javascript:TreeView_ToggleNode(TreeView1_Data,9,TreeView1n9,'%20',TreeView1n9Nodes)"><IMG
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px;
BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px"
alt="Expand Boats"

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(1).gif"></A></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t9
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t9');"

href="javascript:__doPostBack('TreeView1','sBoats')">Boats</A></TD></TR></TBODY></TABLE>
<DIV id=TreeView1n9Nodes style="DISPLAY: none">
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t10
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t10');"

href="javascript:__doPostBack('TreeView1','sBoats\\Enterprise')">Enterprise</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t11
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t11');"

href="javascript:__doPostBack('TreeView1','sBoats\\Laser')">Laser</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t12
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t12');"

href="javascript:__doPostBack('TreeView1','sBoats\\Dragon')">Dragon</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD>
<DIV style="WIDTH: 20px; HEIGHT: 1px"></DIV></TD>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t13
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t13');"

href="javascript:__doPostBack('TreeView1','sBoats\\Flying%20Fifteen')">Flying
Fifteen</A></TD></TR></TBODY></TABLE></DIV>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t14
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t14');"

href="javascript:__doPostBack('TreeView1','sLorries')">Lorries</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t15
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t15');"

href="javascript:__doPostBack('TreeView1','sBuses')">Buses</A></TD></TR></TBODY></TABLE>
<TABLE
style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH:
0px; BORDER-RIGHT-WIDTH: 0px"
cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD><IMG alt=""

src="S:\Root\General_Documentation\TreeViewTest_files\WebResource(2).gif"></TD>
<TD style="WHITE-SPACE: nowrap"><A class=TreeView1_0 id=TreeView1t16
onclick="TreeView_SelectNode(TreeView1_Data, this,'TreeView1t16');"

href="javascript:__doPostBack('TreeView1','sTrains')">Trains</A></TD></TR></TBODY></TABLE></DIV><A
id=TreeView1_SkipLink></A></DIV>
<SCRIPT type=text/javascript>
<!--
var TreeView1_ImageArray = new Array('', '', '',
'/WSRP/WebResource.axd?d=cIqWt1PDj94lvzio2eGOMKmSkBptWrWqPkb-cIlCwvg1&t=632680032825475000',
'/WSRP/WebResource.axd?d=cIqWt1PDj94lvzio2eGOMMOR0ih5EPCqg48qAxoxhNk1&t=632680032825475000',
'/WSRP/WebResource.axd?d=cIqWt1PDj94lvzio2eGOMMc7640wctWVchlg_p-dXiE1&t=632680032825475000');
// -->
</SCRIPT>

<DIV><INPUT id=__EVENTVALIDATION type=hidden
value=/wEWEgLnq6z9BQL6vr/BBgKysbr5BALjjPH+CQLQwp7WCgKf4KtUAuD6p64DAtqP0MIHAtmwhfYIAoXgi90PAovspsMPAoLh9OsBArLZ/IACApPLwLUCApGp6poIArLHqccKAqSIlZsLAraP//wBUDVsYilspGiBCuQYk87frbAbbLY=
name=__EVENTVALIDATION> </DIV>
<SCRIPT type=text/javascript>
<!--

WebForm_InitCallback();var TreeView1_Data = new Object();
TreeView1_Data.images = TreeView1_ImageArray;
TreeView1_Data.collapseToolTip = "Collapse {0}";
TreeView1_Data.expandToolTip = "Expand {0}";
TreeView1_Data.expandState = theForm.elements['TreeView1_ExpandState'];
TreeView1_Data.selectedNodeID = theForm.elements['TreeView1_SelectedNode'];
for (var i=0;i<6;i++) {
var preLoad = new Image();
if (TreeView1_ImageArray.length > 0)
preLoad.src = TreeView1_ImageArray;
}
TreeView1_Data.lastIndex = 17;
TreeView1_Data.populateLog = theForm.elements['TreeView1_PopulateLog'];
TreeView1_Data.treeViewID = 'TreeView1';
TreeView1_Data.name = 'TreeView1_Data';
// -->
</SCRIPT>
</FORM></BODY></HTML>

 

[Walter Wang [MSFT]]

Hi Dave,

This is a quick note to let you know that I am performing research on this
issue and will get back to you as soon as possible. I appreciate your
patience.

Regards,
Walter Wang
Microsoft Online Community Support

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[Walter Wang [MSFT]]

Hi Dave,

From your post about the javascript error, it looks like function
WebForm_InitCallback() is not defined, which should be included in the
javascript src file "TreeViewTest_files/WebResource.axd". Would you please
posting it here or sending to me? My email address is my newsgroup account
by removing the 'online.' part. Also, I noted that the html source you
posted includes an absolute path to another javascript source file, this
maybe the problem of not being able to find the function correctly.

Based on my research, the TreeView will use two javascript source files
generated by WebResource.axd, one is used by Script Callback in ASP.NET
2.0, another is used by the TreeView control itself.

From your second post about the error description "The download of the
specified resource has failed", I suspect it's because the client browser
cannot download the javascript source file generated by WebResource.axd.
For example, when you view source of html, you will normally see following
script file reference:

<script
src="/tree1/WebResource.axd?d=Rv-sPALmcsiC7BFZzlz7qw2&amp;t=6328167188497884
18" type="text/javascript"></script>

In this case, you should be able to save the javascript source file by copy
the path into address bar and save it locally.

Also, is the client browser using proxy? Maybe some other addon of IE is
blocking the resource?


Regards,
Walter Wang
Microsoft Online Community Support

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[mfr]

Walter,

Thank you for you continuing support.

Here are the contents of the webresource.asd file. The
WebForm_InitCallback() does appear to be defined in this file.


Dave.


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

function WebForm_PostBackOptions(eventTarget, eventArgument, validation,
validationGroup, actionUrl, trackFocus, clientSubmit) {
this.eventTarget = eventTarget;
this.eventArgument = eventArgument;
this.validation = validation;
this.validationGroup = validationGroup;
this.actionUrl = actionUrl;
this.trackFocus = trackFocus;
this.clientSubmit = clientSubmit;
}
function WebForm_DoPostBackWithOptions(options) {
var validationResult = true;
if (options.validation) {
if (typeof(Page_ClientValidate) == 'function') {
validationResult = Page_ClientValidate(options.validationGroup);
}
}
if (validationResult) {
if ((typeof(options.actionUrl) != "undefined") && (options.actionUrl
!= null) && (options.actionUrl.length > 0)) {
theForm.action = options.actionUrl;
}
if (options.trackFocus) {
var lastFocus = theForm.elements["__LASTFOCUS"];
if ((typeof(lastFocus) != "undefined") && (lastFocus != null)) {
if (typeof(document.activeElement) == "undefined") {
lastFocus.value = options.eventTarget;
}
else {
var active = document.activeElement;
if ((typeof(active) != "undefined") && (active != null)) {
if ((typeof(active.id) != "undefined") && (active.id
!= null) && (active.id.length > 0)) {
lastFocus.value = active.id;
}
else if (typeof(active.name) != "undefined") {
lastFocus.value = active.name;
}
}
}
}
}
}
if (options.clientSubmit) {
__doPostBack(options.eventTarget, options.eventArgument);
}
}
var __pendingCallbacks = new Array();
var __synchronousCallBackIndex = -1;
function WebForm_DoCallback(eventTarget, eventArgument, eventCallback,
context, errorCallback, useAsync) {
var postData = __theFormPostData +
"__CALLBACKID=" + WebForm_EncodeCallback(eventTarget) +
"&__CALLBACKPARAM=" + WebForm_EncodeCallback(eventArgument);
if (theForm["__EVENTVALIDATION"]) {
postData += "&__EVENTVALIDATION=" +
WebForm_EncodeCallback(theForm["__EVENTVALIDATION"].value);
}
var xmlRequest,e;
try {
xmlRequest = new XMLHttpRequest();
}
catch(e) {
try {
xmlRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e) {
}
}
var setRequestHeaderMethodExists = true;
try {
setRequestHeaderMethodExists = (xmlRequest &&
xmlRequest.setRequestHeader);
}
catch(e) {}
var callback = new Object();
callback.eventCallback = eventCallback;
callback.context = context;
callback.errorCallback = errorCallback;
callback.async = useAsync;
var callbackIndex = WebForm_FillFirstAvailableSlot(__pendingCallbacks,
callback);
if (!useAsync) {
if (__synchronousCallBackIndex != -1) {
__pendingCallbacks[__synchronousCallBackIndex] = null;
}
__synchronousCallBackIndex = callbackIndex;
}
if (setRequestHeaderMethodExists) {
xmlRequest.onreadystatechange = WebForm_CallbackComplete;
callback.xmlRequest = xmlRequest;
xmlRequest.open("POST", theForm.action, true);
xmlRequest.setRequestHeader("Content-Type",
"application/x-www-form-urlencoded");
xmlRequest.send(postData);
return;
}
callback.xmlRequest = new Object();
var callbackFrameID = "__CALLBACKFRAME" + callbackIndex;
var xmlRequestFrame = document.frames[callbackFrameID];
if (!xmlRequestFrame) {
xmlRequestFrame = document.createElement("IFRAME");
xmlRequestFrame.width = "1";
xmlRequestFrame.height = "1";
xmlRequestFrame.frameBorder = "0";
xmlRequestFrame.id = callbackFrameID;
xmlRequestFrame.name = callbackFrameID;
xmlRequestFrame.style.position = "absolute";
xmlRequestFrame.style.top = "-100px"
xmlRequestFrame.style.left = "-100px";
try {
if (callBackFrameUrl) {
xmlRequestFrame.src = callBackFrameUrl;
}
}
catch(e) {}
document.body.appendChild(xmlRequestFrame);
}
var interval = window.setInterval(function() {
xmlRequestFrame = document.frames[callbackFrameID];
if (xmlRequestFrame && xmlRequestFrame.document) {
window.clearInterval(interval);
xmlRequestFrame.document.write("");
xmlRequestFrame.document.close();
xmlRequestFrame.document.write('<html><body><form
method="post"><input type="hidden" name="__CALLBACKLOADSCRIPT"
value="t"></form></body></html>');
xmlRequestFrame.document.close();
xmlRequestFrame.document.forms[0].action = theForm.action;
var count = __theFormPostCollection.length;
var element;
for (var i = 0; i < count; i++) {
element = __theFormPostCollection;
if (element) {
var fieldElement =
xmlRequestFrame.document.createElement("INPUT");
fieldElement.type = "hidden";
fieldElement.name = element.name;
fieldElement.value = element.value;

xmlRequestFrame.document.forms[0].appendChild(fieldElement);
}
}
var callbackIdFieldElement =
xmlRequestFrame.document.createElement("INPUT");
callbackIdFieldElement.type = "hidden";
callbackIdFieldElement.name = "__CALLBACKID";
callbackIdFieldElement.value = eventTarget;

xmlRequestFrame.document.forms[0].appendChild(callbackIdFieldElement);
var callbackParamFieldElement =
xmlRequestFrame.document.createElement("INPUT");
callbackParamFieldElement.type = "hidden";
callbackParamFieldElement.name = "__CALLBACKPARAM";
callbackParamFieldElement.value = eventArgument;

xmlRequestFrame.document.forms[0].appendChild(callbackParamFieldElement);
if (theForm["__EVENTVALIDATION"]) {
var callbackValidationFieldElement =
xmlRequestFrame.document.createElement("INPUT");
callbackValidationFieldElement.type = "hidden";
callbackValidationFieldElement.name = "__EVENTVALIDATION";
callbackValidationFieldElement.value =
theForm["__EVENTVALIDATION"].value;

xmlRequestFrame.document.forms[0].appendChild(callbackValidationFieldElement);
}
var callbackIndexFieldElement =
xmlRequestFrame.document.createElement("INPUT");
callbackIndexFieldElement.type = "hidden";
callbackIndexFieldElement.name = "__CALLBACKINDEX";
callbackIndexFieldElement.value = callbackIndex;

xmlRequestFrame.document.forms[0].appendChild(callbackIndexFieldElement);
xmlRequestFrame.document.forms[0].submit();
}
}, 10);
}
function WebForm_CallbackComplete() {
for (i = 0; i < __pendingCallbacks.length; i++) {
callbackObject = __pendingCallbacks;
if (callbackObject && callbackObject.xmlRequest &&
(callbackObject.xmlRequest.readyState == 4)) {
WebForm_ExecuteCallback(callbackObject);
if (!__pendingCallbacks.async) {
__synchronousCallBackIndex = -1;
}
__pendingCallbacks = null;
var callbackFrameID = "__CALLBACKFRAME" + i;
var xmlRequestFrame = document.getElementById(callbackFrameID);
if (xmlRequestFrame) {
xmlRequestFrame.parentNode.removeChild(xmlRequestFrame);
}
}
}
}
function WebForm_ExecuteCallback(callbackObject) {
var response = callbackObject.xmlRequest.responseText;
if (response.charAt(0) == "s") {
if ((typeof(callbackObject.eventCallback) != "undefined") &&
(callbackObject.eventCallback != null)) {
callbackObject.eventCallback(response.substring(1),
callbackObject.context);
}
}
else if (response.charAt(0) == "e") {
if ((typeof(callbackObject.errorCallback) != "undefined") &&
(callbackObject.errorCallback != null)) {
callbackObject.errorCallback(response.substring(1),
callbackObject.context);
}
}
else {
var separatorIndex = response.indexOf("|");
if (separatorIndex != -1) {
var validationFieldLength = parseInt(response.substring(0,
separatorIndex));
if (!isNaN(validationFieldLength)) {
var validationField = response.substring(separatorIndex + 1,
separatorIndex + validationFieldLength + 1);
if (validationField != "") {
var validationFieldElement = theForm["__EVENTVALIDATION"];
if (!validationFieldElement) {
validationFieldElement =
document.createElement("INPUT");
validationFieldElement.type = "hidden";
validationFieldElement.name = "__EVENTVALIDATION";
theForm.appendChild(validationFieldElement);
}
validationFieldElement.value = validationField;
}
if ((typeof(callbackObject.eventCallback) != "undefined") &&
(callbackObject.eventCallback != null)) {

callbackObject.eventCallback(response.substring(separatorIndex +
validationFieldLength + 1), callbackObject.context);
}
}
}
}
}
function WebForm_FillFirstAvailableSlot(array, element) {
var i;
for (i = 0; i < array.length; i++) {
if (!array) break;
}
array = element;
return i;
}
var __nonMSDOMBrowser =
(window.navigator.appName.toLowerCase().indexOf('explorer') == -1);
var __theFormPostData = "";
var __theFormPostCollection = new Array();
function WebForm_InitCallback() {
var count = theForm.elements.length;
var element;
for (var i = 0; i < count; i++) {
element = theForm.elements;
var tagName = element.tagName.toLowerCase();
if (tagName == "input") {
var type = element.type;
if ((type == "text" || type == "hidden" || type == "password" ||
((type == "checkbox" || type == "radio") &&
element.checked)) &&
(element.id != "__EVENTVALIDATION")) {
WebForm_InitCallbackAddField(element.name, element.value);
}
}
else if (tagName == "select") {
var selectCount = element.options.length;
for (var j = 0; j < selectCount; j++) {
var selectChild = element.options[j];
if (selectChild.selected == true) {
WebForm_InitCallbackAddField(element.name, element.value);
}
}
}
else if (tagName == "textarea") {
WebForm_InitCallbackAddField(element.name, element.value);
}
}
}
function WebForm_InitCallbackAddField(name, value) {
var nameValue = new Object();
nameValue.name = name;
nameValue.value = value;
__theFormPostCollection[__theFormPostCollection.length] = nameValue;
__theFormPostData += name + "=" + WebForm_EncodeCallback(value) + "&";
}
function WebForm_EncodeCallback(parameter) {
if (encodeURIComponent) {
return encodeURIComponent(parameter);
}
else {
return escape(parameter);
}
}
var __disabledControlArray = new Array();
function WebForm_ReEnableControls() {
if (typeof(__enabledControlArray) == 'undefined') {
return false;
}
var disabledIndex = 0;
for (var i = 0; i < __enabledControlArray.length; i++) {
var c;
if (__nonMSDOMBrowser) {
c = document.getElementById(__enabledControlArray);
}
else {
c = document.all[__enabledControlArray];
}
if ((typeof(c) != "undefined") && (c != null) && (c.disabled ==
true)) {
c.disabled = false;
__disabledControlArray[disabledIndex++] = c;
}
}
setTimeout("WebForm_ReDisableControls()", 0);
return true;
}
function WebForm_ReDisableControls() {
for (var i = 0; i < __disabledControlArray.length; i++) {
__disabledControlArray.disabled = true;
}
}
var __defaultFired = false;
function WebForm_FireDefaultButton(event, target) {
if (!__defaultFired && event.keyCode == 13 && !(event.srcElement &&
(event.srcElement.tagName.toLowerCase() == "textarea"))) {
var defaultButton;
if (__nonMSDOMBrowser) {
defaultButton = document.getElementById(target);
}
else {
defaultButton = document.all[target];
}
if (defaultButton && typeof(defaultButton.click) != "undefined") {
__defaultFired = true;
defaultButton.click();
event.cancelBubble = true;
if (event.stopPropagation) event.stopPropagation();
return false;
}
}
return true;
}
function WebForm_GetScrollX() {
if (__nonMSDOMBrowser) {
return window.pageXOffset;
}
else {
if (document.documentElement && document.documentElement.scrollLeft) {
return document.documentElement.scrollLeft;
}
else if (document.body) {
return document.body.scrollLeft;
}
}
return 0;
}
function WebForm_GetScrollY() {
if (__nonMSDOMBrowser) {
return window.pageYOffset;
}
else {
if (document.documentElement && document.documentElement.scrollTop) {
return document.documentElement.scrollTop;
}
else if (document.body) {
return document.body.scrollTop;
}
}
return 0;
}
function WebForm_SaveScrollPositionSubmit() {
if (__nonMSDOMBrowser) {
theForm.elements['__SCROLLPOSITIONY'].value = window.pageYOffset;
theForm.elements['__SCROLLPOSITIONX'].value = window.pageXOffset;
}
else {
theForm.__SCROLLPOSITIONX.value = WebForm_GetScrollX();
theForm.__SCROLLPOSITIONY.value = WebForm_GetScrollY();
}
if ((typeof(this.oldSubmit) != "undefined") && (this.oldSubmit != null)) {
return this.oldSubmit();
}
return true;
}
function WebForm_SaveScrollPositionOnSubmit() {
theForm.__SCROLLPOSITIONX.value = WebForm_GetScrollX();
theForm.__SCROLLPOSITIONY.value = WebForm_GetScrollY();
if ((typeof(this.oldOnSubmit) != "undefined") && (this.oldOnSubmit !=
null)) {
return this.oldOnSubmit();
}
return true;
}
function WebForm_RestoreScrollPosition() {
if (__nonMSDOMBrowser) {
window.scrollTo(theForm.elements['__SCROLLPOSITIONX'].value,
theForm.elements['__SCROLLPOSITIONY'].value);
}
else {
window.scrollTo(theForm.__SCROLLPOSITIONX.value,
theForm.__SCROLLPOSITIONY.value);
}
if ((typeof(theForm.oldOnLoad) != "undefined") && (theForm.oldOnLoad !=
null)) {
return theForm.oldOnLoad();
}
return true;
}
function WebForm_TextBoxKeyHandler(event) {
if (event.keyCode == 13) {
var target;
if (__nonMSDOMBrowser) {
target = event.target;
}
else {
target = event.srcElement;
}
if ((typeof(target) != "undefined") && (target != null)) {
if (typeof(target.onchange) != "undefined") {
target.onchange();
event.cancelBubble = true;
if (event.stopPropagation) event.stopPropagation();
return false;
}
}
}
return true;
}
function WebForm_AppendToClassName(element, className) {
var current = element.className;
if (current) {
if (current.charAt(current.length - 1) != ' ') {
current += ' ';
}
current += className;
}
else {
current = className;
}
element.className = current;
}
function WebForm_RemoveClassName(element, className) {
var current = element.className;
if (current) {
if (current.substring(current.length - className.length - 1,
current.length) == ' ' + className) {
element.className = current.substring(0, current.length -
className.length - 1);
return;
}
if (current == className) {
element.className = "";
return;
}
var index = current.indexOf(' ' + className + ' ');
if (index != -1) {
element.className = current.substring(0, index) +
current.substring(index + className.length + 2, current.length);
return;
}
if (current.substring(0, className.length) == className + ' ') {
element.className = current.substring(className.length + 1,
current.length);
}
}
}
function WebForm_GetElementById(elementId) {
if (document.getElementById) {
return document.getElementById(elementId);
}
else if (document.all) {
return document.all[elementId];
}
else return null;
}
function WebForm_GetElementByTagName(element, tagName) {
var elements = WebForm_GetElementsByTagName(element, tagName);
if (elements && elements.length > 0) {
return elements[0];
}
else return null;
}
function WebForm_GetElementsByTagName(element, tagName) {
if (element && tagName) {
if (element.getElementsByTagName) {
return element.getElementsByTagName(tagName);
}
if (element.all && element.all.tags) {
return element.all.tags(tagName);
}
}
return null;
}
function WebForm_GetElementDir(element) {
if (element) {
if (element.dir) {
return element.dir;
}
return WebForm_GetElementDir(element.parentNode);
}
return "ltr";
}
function WebForm_GetElementPosition(element) {
var result = new Object();
result.x = 0;
result.y = 0;
result.width = 0;
result.height = 0;
if (element.offsetParent) {
result.x = element.offsetLeft;
result.y = element.offsetTop;
var parent = element.offsetParent;
while (parent) {
result.x += parent.offsetLeft;
result.y += parent.offsetTop;
var parentTagName = parent.tagName.toLowerCase();
if (parentTagName != "table" &&
parentTagName != "body" &&
parentTagName != "html" &&
parentTagName != "div" &&
parent.clientTop &&
parent.clientLeft) {
result.x += parent.clientLeft;
result.y += parent.clientTop;
}
parent = parent.offsetParent;
}
}
else if (element.left && element.top) {
result.x = element.left;
result.y = element.top;
}
else {
if (element.x) {
result.x = element.x;
}
if (element.y) {
result.y = element.y;
}
}
if (element.offsetWidth && element.offsetHeight) {
result.width = element.offsetWidth;
result.height = element.offsetHeight;
}
else if (element.style && element.style.pixelWidth &&
element.style.pixelHeight) {
result.width = element.style.pixelWidth;
result.height = element.style.pixelHeight;
}
return result;
}
function WebForm_GetParentByTagName(element, tagName) {
var parent = element.parentNode;
var upperTagName = tagName.toUpperCase();
while (parent && (parent.tagName.toUpperCase() != upperTagName)) {
parent = parent.parentNode ? parent.parentNode : parent.parentElement;
}
return parent;
}
function WebForm_SetElementHeight(element, height) {
if (element && element.style) {
element.style.height = height + "px";
}
}
function WebForm_SetElementWidth(element, width) {
if (element && element.style) {
element.style.width = width + "px";
}
}
function WebForm_SetElementX(element, x) {
if (element && element.style) {
element.style.left = x + "px";
}
}
function WebForm_SetElementY(element, y) {
if (element && element.style) {
element.style.top = y + "px";
}
}

 

[mfr]

Walter,

re: the absolute paths...

I hadn't noticed the absolute paths, which were pointing to a folder not
available to the users. I've amended the html file and am now waiting for the
user to report back.

Regards,
Dave.

 

[mfr]

OK, the user has reported back that the tree view now has the graphics ok but
still doesn't expand. The Error-on-page messages is

Line 1, character 1 error object expected. code 0

which, to me, doesn't seem to be very usefull.

Dave.

 

[Walter Wang [MSFT]]

Hi Dave,

Thank you for your update.

In javascript "object expected" normally means some javascript function or
object is not defined, which also means some required javascript source
files are not loaded correctly.

As I said in my last post, the TreeView is using some embedded javascript
source files which generated by WebResource.axd. They should be downloaded
by IE correctly. For those system that have problem with this, I think
there must be some specific security setting or tools/addon which prevents
the resource from loading.

I think you can also try to use other browsers to see if this problem
exists or not. That might narrow down some possibilities.

If this issue is urgent or critical to your product, I suggest you contact
MSDN representatives to submit your questions online or through phone:
http://msdn.microsoft.com/subscriptions/support/default.aspx
As an MSDN Subscriber, you are entitled to receive up to four support
incidents depending on your subscription level.


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

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[mfr]

Walter,

After your last comment I passed the call back to the client's support team
with the details of this thread. I've now received (limited) feedback from
them.....

"Javascript functions enabled. Call resolved"

I was originally told that they'd checked this.

Anyway, thanks for your help.

Regards,
Dave.

 

[Walter Wang [MSFT]]

Hi Dave,

Thank you for your update.

Please feel free to post here if you need more help on this.

Have a nice day!



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

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[Marcus Li]

Hello there, my problem is that I am trying to develop a web part to
navigate the sharepoint site using TreeView from ASP.NET 2.0 and
Sharepoint Portal Server 2003.

However, everytime the web part gets rendered I receive the exact same
error:

Error: object expected
Char: 1

I am viewing the web part using IE 6, so I was wondering how to set the
javascript on IE to get rid of this error.

Thanks so much for your help.
Marcus.

 

[matt vaughn]

I have been researching something similiar to this for applications using the new Callback. There are (2) JavaScript methods that used by this mechanism and really handled by the WebResources.axd handler.

In my case I get WebForm_InitCallback() and WebForm_DoCallback() - - > "Object expected" errors.

The only way I get it to work is to:
1. go to the IIS console
2. right-click the site and select Properties
3. Click on the "Configuration" button
4. Select the .axd Extension and click Edit
5. Uncheck the box "Check that file exists".

In addition:
1. restart IIS
2. dump any Temporay Internet files from the browser Tools | Options
3. I even clear the Tempary ASP.Net files from the Framework directories.