asp.net - Improving RadFileUpload to check for 250MB file size BEFORE starting Upload? -


can tell me how check file size of file selected upload before starting upload?

<telerik:radupload id="fuuploadfile" runat="server" controlobjectsvisibility="none"     onclientfileselected="validationfailed" inputsize="50" targetfolder="\upload" allowedfileextensions=".wav,.mp3,.mpeg,.mpg,.wmv,.avi,.mp4" /> <telerik:radprogressarea id="radprogressarea1" runat="server" backcolor="#668b8b"     tooltip="uploading " > </telerik:radprogressarea> <telerik:radprogressmanager id="radprogressmanager1" runat="server"  /> <asp:customvalidator id="customvalidatoruploadfile" runat="server" display="dynamic"     clientvalidationfunction="validatefile" cssclass="reditalic1" text="... error text here" />

create handler.

public void processrequest(httpcontext context) {     httppostedfile = context.request.files[0];     if(up.contentlength > 2097152)    // 2mb     {         //your logic here     } }

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