Sending custom error messages from server to the c

[Luke]

Hi,

I'm currently working on uploader to sharepoint. My problem is that often when SP is down uploader still shows that everything went ok. Therefore I would like to make sure that if SP failed, (even though uploader managed to save it ok to local folder) error message is displayed. Possibly I would like to reuse uploader's error showing capabilities rather than lets say alert or error box.

I did some research and I found one person on this forum with similar issues. http://www.telerik.com/community/forums/silverlight/upload/server-cancel-upload-and-return-custom-error-message-to-client.aspx

This is my code

// HANDLER


public override bool SaveChunkData(string filePath, long position, byte[] buffer, int contentLength, out int savedBytes)
        {
            bool ret = base.SaveChunkData(filePath, position, buffer, contentLength, out savedBytes);

            if (base.IsFinalFileRequest() == true)
            {
                        try
                        {
                            // Moving file to SP
                        }
                        catch (Exception e)
                        {
                            Error = "Couldn't upload file to SP.";

                            this.AddReturnParam(RadUploadConstants.ParamNameMessage, Error);

                            this.AddReturnParam(RadUploadConstants.ParamNameSuccess, false);
                            this.AddReturnParam(RadUploadConstants.ParamNameFileName, this.GetFileName());
                            this.AddReturnParam(RadUploadConstants.ParamNameFinalFileRequest, true);

                            this.Result.Add("Error", Error);

                            this.SendResponse();
                        }
                    }
                    else
                    {

// CLIENT

private void FileUploader_FileUploadFailed(object sender, FileUploadFailedEventArgs e)
        {
            RadWindow.Alert(new DialogParameters
                {
                    Header = "Upload failed",
                    Content = e.HandlerData.Message
                });

        }

On client side e is empty with no messages at all. What am I doing wrong?

[Alex Fidanov]

Hi Luke,

Have you tried using the AddReturnFileParam method instead of AddReturnParam? Also, in your code I cannot see what value is returned from the SaveChunkData method? Are you returning true or false?

Regards,
Alex Fidanov
the Telerik team

[MD]

What would be the recommended way to return the error to the client from SaveChunkData?  If you add the below return parameters and return false from SaveChunkData the warning icon appears next to the file with issues, but the progress bar color is still green and the overall progress bar (multiple files) appears as if it is stalled under 100% and is still colored green with no indication that there was a problem.

AddReturnFileParam(RadUploadConstants.ParamNameMessage, success.Message);
AddReturnFileParam(RadUploadConstants.ParamNameSuccess, false);
AddReturnFileParam(RadUploadConstants.ParamNameFinalFileRequest, true);

[Tina Stancheva]

Hi Md,

The progress bar with the overall details keeps track only of those files that passed all validations and that are valid for upload - RadUpload.CurrentSession.ValidFiles collection. This is why if one file isn't valid for upload, its size won't be included in the progress bar calculations and the ProgressBar will display only the upload progress of the items in the ValidFiles collection of the session.

Also, please keep in mind that when you validate a file in the SaveChunkData method, you have to call the base.SavaChinkData() method only after the file passes the validation. Otherwise even if the SaveChunkData method returns false, once its base method is called for the invalid file, the file will be uploaded.

All the best,
Tina Stancheva
the Telerik team