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Posted on 2011-03-09
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Last Modified: 2012-05-11
"Server Response Error: 'Unknown Server error'"

Get this when trying to use Ajax AsyncFileUpload.

Have adjusted the web.config, checked the control name and events.  Registered the Ajax assembly.
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Question by:triplebd69
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Expert Comment

by:cefranklin
ID: 35086882
Write access to the directory?
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Author Comment

by:triplebd69
ID: 35086947
I am not getting past the clientsideupload.
<ajax:AsyncFileUpload ID="fuSlides" Width="400px" runat="server"
				OnClientUploadError="uploadError" 
				OnClientUploadStarted="StartUpload" 
				OnClientUploadComplete="UploadComplete" 
				CompleteBackColor="Lime"
				UploaderStyle="Modern" 
				ErrorBackColor="Red" 
				onuploadedcomplete="fuSlides_UploadedComplete" 
				UploadingBackColor="#66CCFF" />


 <script type="text/javascript" language="javascript">
	     function uploadError(sender, args) {
//	         alert("[" + lblStatus + "]"); return false;
	         document.getElementById('<%= lblStatus.ClientID %>').innerHTML = args.get_errorMessage();
	         alert(args.get_fileName() + ' could not be uploaded. ' + args.get_errorMessage());
		 }
	     function StartUpload(sender, args) {
//	         alert("[" + fuSlides + "]"); return false;
			 var filename = args.get_fileName();
			 var filext = filename.substring(filename.lastIndexOf(".") + 1);
			 if (filext == "doc" || filext == "docx" || filext == "pdf" || filext == "pages" || filext == "pptx" || filext == "ppt") {
				 return true;
			 }
			 else {
				 var err = new Error();
				 err.name = 'My API Input Error';
				 err.message = 'Only .ppt, .pptx, .doc, .docx, or .pdf  files';
				 throw (err);

				 return false;
			 }
		 }
	    function UploadComplete(sender, args) {
			var filename = args.get_fileName();
			var contentType = args.get_contentType();
			var text = "Size of " + filename + " is " + args.get_length() + " bytes";
			if (contentType.length > 0) {
			    text += " and content type is '" + contentType + "'.";
			    __doPostBack('UploadPostback', '');
			}
		}

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Expert Comment

by:cefranklin
ID: 35087025
I haven't messed around with that control much but, still, make sure the IWAM and IUSR have write access to the folder, also check this out:
http://blog.mrt-web.com/2010/12/ajax-control-toolkit-asyncfileupload.html

If you're sure about those two steps and still you get the same error, the simple workaround is to change the value of "ClientIDMode" to "AutoID".
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Author Comment

by:triplebd69
ID: 35087245
I have tried to insert ClientIDMode="AutoID" nut i get this error

'ClientIDMode' is not a member of 'AjaxControlToolkit.AsyncFileUpload'.
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Expert Comment

by:cefranklin
ID: 35087395
Eww, sorry about that. I am reading also that other developers are using Fiddler to see the exact error.  Maybe that can help your narrow it down.

Sorry I don't have any solutions, just trying to help you work through this :)
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Accepted Solution

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triplebd69 earned 0 total points
ID: 35087397
Turns out that this site is running on 2.0 framework, so I don't think that I can get this control to work on it, I believe that it needs the 3.5 framework or higher.
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LVL 2

Expert Comment

by:cefranklin
ID: 35087439
Check to see if 3.5 is installed in C:\Windows\Microsoft.NET\Framework.  If there is a v3.5 folder, it is installed.  If it is installed and the website is set to 2, then it is also using 3.5.
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Expert Comment

by:cefranklin
ID: 35087447
Oh, also, if you have access to the web server itself, make sure the v2 asp.net extension is enabled.
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Author Comment

by:triplebd69
ID: 35087558
Currently I am running this on my local machine.  In the C:\Windows\Microsoft.NET\Framework folder I have v2, v3.0, v3.5, v4.0
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LVL 2

Expert Comment

by:cefranklin
ID: 35087593
Yeah, so asp.net 3.5 should be good to go, you could run C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -r to reinstall and will set all websites to use that version.

I think after that if it still doesn't work your best bet would be to get fiddler.  FireFox also has Firebug so you can see the XHR requests.
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LVL 2

Expert Comment

by:cefranklin
ID: 35095916
What framework did you need? 4?
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Author Comment

by:triplebd69
ID: 35096361
2.0
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Author Closing Comment

by:triplebd69
ID: 35135812
Using wrong framework
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