c# - JScript runtime error when downloading file from server -

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i have button on aspx, when clicked, calls method download jpeg file server. jpeg file chart created infragistic.

my current download method this:

 private void download(string pimagen)     {          context.response.clearcontent();         context.response.clear();         context.response.contenttype = "application/jpeg";         context.response.addheader("content-disposition", "attachment; filename =" + pimagen);         context.response.flush();         context.response.transmitfile(configurationmanager.appsettings["uploadpath"] + pimagen);         context.response.end();     }

but after method executed, jsruntime error pops up:

microsoft jscript runtime error: system error: -1072896748.

the error located in file called "ig_shared.js" in method:

this._doresponse = function(cb) {     var request = cb.request;     if(!request || request.readystate != 4)         return false;     var txt = request.responsetext, sep = this._sep, seplen = this._seplen;

when debug, visual studio shows message says "the name 'request' not exist in current context" in code line:

var txt = request.responsetext

maybe i'm missing something, have no idea wrong.


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