Hi,

I am getting an exception "Server cannot append headers after HTTP headers have been set". while using the Progress Bar.

I am using the Progress bar in one my page, where I am trying to download the data in to excel sheet.

I have written the code to download the excel in this event, downloading process takes a while for me..

ProgressBar1_RunTask(ByVal sender As System.Object, ByVal e As EO.Web.ProgressTaskEventArgs) Handles ProgressBar1.RunTask

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Response.ClearContent()
Response.AddHeader("Content-Disposition", "filename=" & mcampName & ".xls") ''''''I am getting error in this line
Response.ContentType = "application/excel"
Response.WriteFile(mfilename)
Response.Flush()
Response.Close()

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Thanks..