WebFileUploader causes server-side error after page load

yudi — Sun, 13 Mar 2011 23:40:00 GMT

This error message is quite odd and we have not received such reports so far.

We are willing to advice you further but in order to do so we would need you to elaborate on your specific scenario and possibly give us a running simple sample that reproduces the issue and a step-by-step guide that we can use to observe the problematic behavior.

Thank you.

WebFileUploader causes server-side error after page load

mdearman@libera.com — Fri, 11 Mar 2011 11:33:48 GMT

I am loading a page with a WebFileUploader control on it.

Using an HTTP debugger, I am watching the traffic to try to track down an Unhandled Error I'm logging at the server.

On the GET request generated by the control for: http://hostname/app/MyPage.aspx?x=HcEpOtYzAss5KpkQIMA8I-A0LsgyKII5Kc05cpFtf5Rtac84NtI8I9E4cpBpfoR9ED3T&IsUploadPage=true&UploadId=oUpload_FileUpload

where its adding the IsUploadPage and UploadId arguments, its generating an error while returning the page HTML:

<!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><title></title><style id="wfu_styles" type="text/css">body {margin:0px;border:0px;padding:0px;overflow:hidden} </style></head> <body onload="if (typeof(handleLoad) != 'undefined') handleLoad()" onkeydown="if (typeof(handleKeyDown) != 'undefined') handleKeyDown()" topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0"> <form name="frmUpload" method="post" action="FileUpload.aspx?HcEpOtYzAss5KpkQIMA8I-A0LsgyKII5Kc05cpFtf5Rtac84NtI8I9E4cpBpfoR9ED3T&IsUploadPage=true&UploadId=oUpload_FileUpload" id="frmUpload" onsubmit="return beforeSubmit()" enctype="multipart/form-data"><div><input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="" /></div><input type="file" name="oUpload_FileUpload" id="oUpload_FileUpload" style="position:relative;overflow:hidden;height:22px;left:-140px;" /></form> </body></html>

The error is:

System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.InvalidOperationException: Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.
   at System.Web.UI.ScriptManager.get_IPage()
   at System.Web.UI.ScriptManager.OnPagePreRenderComplete(Object sender, EventArgs e)
   at System.Web.UI.Page.OnPreRenderComplete(EventArgs e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   --- End of inner exception stack trace ---
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at ASP.lform_fileupload_aspx.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

What is causing this? Thanks!

Mike

Intersoft Community - WebTextEditor - WebFileUploader causes server-side error after page load

WebFileUploader causes server-side error after page load

WebFileUploader causes server-side error after page load