Hello elvisvr,

If you want to cancel file uploading when file size limit is exceeded the best way to do it is this:

1. Set  "maxFileSizeLimit" setting in the web.config like this:

<appSettings>
    <add key="fileUploadPath" value="~/Uploads" />
    <add key="maxFileSizeLimit" value="1000000" />
</appSettings>

Reference: http://help.infragistics.com/NetAdvantage/jQuery/Current/CLR4.0/Help/NetAdvantage/jQuery/2011.2/CLR4.0/html/igUpload_Using_HTTP_Handler_and_Modules.html

2. Handle "onError" event on client and check the "ui.errorCode" property for the "File size exceeded" error (Note: error codes are numbers and 2 = "File size exceeded" error).

Example:

$("#igUpload").igUpload({
mode: 'multiple',
progressUrl: "/SamplesBrowser/IGUploadStatusHandler.ashx",
controlId: "serverID1",
onError: function (evt, ui) {
            /* check for "File size exceeded" error*/
if (ui.errorCode === 2)
{
alert("File size exceeded!");
}
}
});
});

If you have other use case then you should use "cancelUpload" method in the proper event (where you have enough information to do your validation checks).

Example:

$(".selector").igUpload("cancelUpload", 1);

Note that the earliest place you have information about file size is "fileUploading" event, but on this stage file uploading has started so there is no guarantee that file won't be uploaded (if the file is small) and other events will be fired.

Hope this helps,

Martin Pavlov

Infragistics, Inc.

http://help.infragistics.com/NetAdvantage/jQuery/Current/CLR4.0/Help/NetAdvantage/jQuery/2011.2/CLR4.0/html/igUpload_Known_Issues.html

Is this your case?

If not, can you provide me with more information like:

1. What is your "maxFileSizeLimit" setting value?
2. What is the size of the file you're trying to upload?
3. What is the code in your "onerror" function?

Is there an error in your sentence "On fileUploading, cancelUpload is not fired I suppose for the reasons you said.". "cancelUpload" is method, not event. What is your code in "fileUploading" event?

Hope this helps,

Martin Pavlov

Infragistics, Inc.

http://support.microsoft.com/kb/942074/  and here:

http://www.webtrenches.com/post.cfm/iis7-file-upload-size-limits

Because I use IIS Express for my test server the change I made in my application web.config is the following:

  <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules runAllManagedModulesForAllRequests="true">
        <add name="IGUploadModule" type="Infragistics.Web.Mvc.UploadModule" preCondition="managedHandler" />
    </modules>
    <handlers>
        <add name="IGUploadStatusHandler" path="IGUploadStatusHandler.ashx" verb="*" type="Infragistics.Web.Mvc.UploadStatusHandler" preCondition="integratedMode" />
    </handlers>
    <security>
        <requestFiltering>
            <requestLimits maxAllowedContentLength="1073741824"/>
        </requestFiltering>
    </security>
  </system.webServer>

Note that in my case I set "maxAllowedContentLength" to be 1GB.

If you're using IIS 6 then you may want to look at this blog post:

http://weblogs.asp.net/mhawley/archive/2004/05/11/129824.aspx

If this solution doesn't work in your case then you may want to check this post suggestions for common errors:

http://blogs.infragistics.com/forums/p/57050/293106.aspx#291612

Best Regards,

Martin Pavlov

Infragistics, Inc.