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[Solved] FileUpload in grid template with ajaxpanel

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Grid

This is a migrated thread and some comments may be shown as answers.

Mattias asked on 16 Apr 2009, 05:24 PM

Hi,
I have a regular asp:FileUpload in a template in a grid.
It works fine to upload if ajax is not enabled but with ajax it wont work.
Javascript errormessage:
Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object.
I have looked at your demo and to use onrequeststart on the panel,
http://demos.telerik.com/aspnet-ajax/ajax/examples/common/fileupload/defaultcs.aspx
but I cant figure out what's wrong!

    
            <script type="text/javascript"> 
        
                    function OnRequestStart(target, arguments) { 
        
                        if (document.getElementById("FileUpload2") != null) { 
        
                            var fileUpload = document.getElementById("FileUpload2"); 
        
                            if (fileUpload.value != "") { 
        
                                arguments.set_enableAjax(false); 
        
                            } 
        
                        } 
        
                    } 
        
            </script> 
        
            <telerik:RadAjaxPanel runat="server" ID="radAjaxPanel" Width="100%" LoadingPanelID="radAjaxLoadingPanel" ClientEvents-OnRequestStart="OnRequestStart"> 
        
                 <telerik:RadGrid ID="RadGrid1" 
        
                 ... 
        
                 <EditFormSettings EditFormType="Template"> 
        
                       <FormTemplate> 
        
                            <input id="FileUpload2" type="file" runat="server" class="fileUpload" /> 
        
                            <asp:Button ID="buttonUploadFile" Text="Ladda upp" runat="server" ValidationGroup="validationGroupFile" CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>' CommandArgument="File" />

4 Answers, 1 is accepted

answered on 16 Apr 2009, 05:58 PM

Thanks to your excellent documentation I found the answer with the javascript,
http://www.telerik.com/help/aspnet-ajax/grduploadwithajaxenabled.html

But now, serverside, it wont find the uploaded file! :(

    
            protected void RadGrid1_InsertCommand(object source, GridCommandEventArgs e) 
        
                    { 
        
                        GridEditableItem gridItem = e.Item as GridEditableItem; 
        
                            HttpPostedFile postedFile = ((HtmlInputFile)gridItem.FindControl("FileUpload2")).PostedFile;  
        
                                if (postedFile.ContentLength > 0) 
        
                                { 
        
                                   ...

The posted file is null!