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[Solved] How Can I change FileName in The Target Folder

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answered on 03 Jan 2011, 03:47 PM

Hi Ahmed,

You can handle the FileUploadStarting() event to implement your scenario:

private void RadUpload_FileUploadStarting(object sender, Telerik.Windows.Controls.FileUploadStartingEventArgs e)

{

string[] nameParts = e.UploadData.FileName.Split('.');

string fileName = nameParts[0] + (++this.uploadedFiles).ToString();

int i = e.UploadData.FileName.LastIndexOf('.');

if (i >= 0 && i < e.UploadData.FileName.Length)

{

fileName += e.UploadData.FileName.Substring(i);

}

e.UploadData.FileName = fileName;

}

You can have a look at this KB article for more info. You can also take a look at this article explaining how to save files on the server with unique names. I hope this info will help you.

Kind regards,
Tina Stancheva
the Telerik team

Browse the videos here>> to help you get started with RadControls for Silverlight

answered on 05 Apr 2011, 08:48 PM

this give Invalid cross-thread access. error when uploading multiple files

code used

 private void RadUpload_FileUploadStarting(object sender, Telerik.Windows.Controls.FileUploadStartingEventArgs e)
{
    e.UploadData.FileName = RenameToAnotherName(e.UploadData.FileName);
}

Then i used 
 private void RadUpload_FileUploadStarting(object sender, Telerik.Windows.Controls.FileUploadStartingEventArgs e)
{
Deployment.Current.Dispatcher.BeginInvoke(() => 
                                 {
                                     e.UploadData.FileName = RenameToAnotherName(e.UploadData.FileName);
                                 });  
}

That doesn't change e.UploadData.FileName. Please help.

answered on 06 Apr 2011, 03:00 PM

For some reason example works i wonder whether this is a telerik version issue. Every time i try multiple file uploads i get the Invalid cross threak access issue

here is more info regarding the error i get.

{System.UnauthorizedAccessException: Invalid cross-thread access.
   at MS.Internal.XcpImports.CheckThread()
   at System.Windows.DependencyObject.GetValueInternal(DependencyProperty dp)
   at System.Windows.FrameworkElement.GetValueInternal(DependencyProperty dp)
   at System.Windows.FrameworkElement.get_DataContext()
   at RAMDirectHomeowners.View.SubmitAppView.RenameToDHName(String fileName)
   at RAMDirectHomeowners.View.SubmitAppView.RadUpload_FileUploadStarting(Object sender, FileUploadStartingEventArgs e)
   at Telerik.Windows.Controls.RadUpload.OnPreviewFileUploadStarting(Object sender, FileUploadStartingEventArgs e)
   at Telerik.Windows.Controls.RadUpload.OnFileUploadStarting(Object sender, EventArgs e)
   at Telerik.Windows.Controls.UploadDispatcher.OnStarting(FileUploadStartingEventArgs e)
   at Telerik.Windows.Controls.UploadDispatcher.PrepareFileUploadStarting()
   at Telerik.Windows.Controls.UploadDispatcher.UploadNextChunk()
   at Telerik.Windows.Controls.UploadDispatcher.OnResponse(IAsyncResult asyncResult)
   at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClassd.<InvokeGetResponseCallback>b__b(Object state2)
   at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()}

answered on 13 Sep 2011, 11:55 AM

We also get the same problem. All we do is adding parameter

Can you please fix it? We only try to add a parameter

<i:Interaction.Triggers>

<i:EventTrigger EventName="FileUploadStarting">

<Mvvm:EventToCommand Command="{Binding Path=FileUploadingCommand}" PassEventArgsToCommand="True"/>

</i:EventTrigger>

</i:Interaction.Triggers>

private ICommand fileUploadingCommand;

public ICommand FileUploadingCommand

{

get

{

if (fileUploadingCommand == null)

{

fileUploadingCommand =

new Command((par) => true, FileUploadStartExecuting);

}

return fileUploadingCommand;

}

set { fileUploadingCommand = value; }

}

private void FileUploadStartExecuting(object obj)

{

FileUploadStartingEventArgs fileUploadStartingEventArgs = obj as FileUploadStartingEventArgs;

if (fileUploadStartingEventArgs!=null)

{

fileUploadStartingEventArgs.FileParameters.Add(

"myparam", this.myparam);

}