HI,

Only in firefox browser "Async request failed" error message displaying when user clicks on image button which present inside webdatagrid to download particular row file.

Please find the following code for the particular column section

<ig:TemplateDataField Key="FilePath" Header-Text ="Download" CssClass="Future_Style_StringField">
<ItemTemplate>
<asp:ImageButton OnClick ="lnkPdfDownload_Click" ID="imgPDF" runat="server" CommandArgument= '<%# Eval("FilePath") %>' ImageUrl="~/images/pdf_icon_16x16.gif" ToolTip ="PDF" />
</ItemTemplate>
<Header Text="Download" />
</ig:TemplateDataField>