Upload button disappers during upload.

[Roshil]

Hi Telerik Team

I’m facing a problem with upload control in Silverlight.  The issue is that during upload of multiple files with the control and try to validate something on upload event, if the validation is failed, the upload button disappears. We are using the e.cancel =true in the OnValidate method. And then the user cannot upload the file as the upload button is missing.

Code used

///Control

<telerik:RadUpload x:Name="radFileUploader" Grid.Row="2" Grid.Column="1" HorizontalAlignment="Left"  Margin="10,0,10,10" VerticalAlignment="Bottom"

                            

                                 Filter="Image Files (*.jpg;*.jpeg;*.png)|*.jpg;*.jpeg;*.png"

                                 FilterIndex="0" MaxFileCount="5"   

                        AllowDrop="true" Width="200"

                                 IsAutomaticUpload="false"

                                 OverwriteExistingFiles="True"

                                 UploadServiceUrl="/Modules/UploadFileHandler.ashx"

                              

                        IsAppendFilesEnabled="True"

                                 FileUploadStarting="radFileUploader_FileUploadStarting"

                                 FileUploaded="radFileUploader_FileUploaded" SingleFilePerPostRequest="False" UploadStarted="radFileUploader_UploadStarted" />

 

 

 

///Constructor

public UploadIconDialog()

        {

            InitializeComponent();

            radFileUploader.AddHandler(RadUploadItem.ValidateEvent, new UploadValidateEventHandler(OnValidate));

 

        }

 

 

///Validation Method

void OnValidate(object sender, UploadValidateEventArgs e)

        {

          

            if (txtLandscape.Text == string.Empty)

            {

                MessageBox.Show("Please select a landscape", "Validation", MessageBoxButton.OK);

// Here Landscape is a mandatory field.

 

                e.Cancel = true;

             

 

            }

        }

 

 

//Attching  parameters.

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

        {

            e.FileParameters.Add("LandscapeGuid", txtLandscape.Tag);

            e.FileParameters.Add("FileName", e.SelectedFile.File.Name);

 

        }

 

So how can I bring back the 'upload' button so the user can upload files if needed?

[Alex Fidanov]

Hi Roshil,

Thank you for reporting this issue. This seems to be a bug in the visual stes of the Upload control. I have logged this in our PITS under "Incorrect UI state when validating all files with the Validate event" and you can check its progress.

Greetings,
Alex Fidanov
the Telerik team

[danparker276]

Any timeline on this?

[Pavel R. Pavlov]

Hi Dan,

We will try to provide a fix for the reported issue in our next official release (Q2 2014). The best way to be notified for any changes to this issue is to follow the feedback item that I exposed in our system.

Regards,
Pavel R. Pavlov
Telerik