AjaxFileUpload control doesnt work when page have querystring in asp.net
问题 I have a button on a .aspx page which opens the popup to upload images of selected item. ListEdit.aspx <asp:Button ID="btnListingImageUpload" runat="server" Text="Upload Images" OnClientClick="basicPopup()"/> Javascript: function basicPopup() { var QuoteId = document.getElementById('<%= hdnQuoteIDForListing.ClientID%>').value; var IsPrep = document.getElementById('<%= hdnIsPrep.ClientID%>').value; alert(IsPrep); popupWindow = window.showModalDialog('ListingImageUpload.aspx?QuoteID=' + QuoteId