>>Sorry Craig,
>>
>>I forgot to say (and to choose the correct application type when I created the message) that this is a WPF desktop application. That tool looks like it's for the web.
>>
>>Or do I understand the write up on it incorrectly?
>>
>>
>>>Look at SignalR. It may do what you want.
>>>
>>>>Hi,
>>>>
>>>>please bear with me as I am not sure of what I am doing. :)
>>>>
>>>>I have a datagrid showing some data. A background process loops through the list of items in the grid and I want to update the data shown in the grid with the result of the process as each item is dealt with.
>>>>
>>>>Specifically my grid shows a list of emails to be sent. When an email gets sent I save the time it was sent and if there was an error during the send gets saved to the email record as well. So I want this to be reflected in the grid.
>>>>
>>>>This is the code that starts off the background process
>>>>
>>>>

        private void btnEmail_Click(object sender, RoutedEventArgs e)
>>>>        {
>>>>            
>>>>            this.BackgroundWorker = new BackgroundWorker();
>>>>            this.BackgroundWorker.WorkerReportsProgress = true;
>>>>            this.BackgroundWorker.DoWork += new DoWorkEventHandler(this.EmailQueueBackgroundWorker_DoWork);
>>>>            this.BackgroundWorker.ProgressChanged += new ProgressChangedEventHandler(this.BackgroundWorker_ProgressChanged);
>>>>
>>>>            this.progressBar.Maximum = 100;
>>>>            this.progressBar.Minimum = 0;
>>>>
>>>>            //// Start the Asynch Worker
>>>>            this.BackgroundWorker.RunWorkerAsync();
>>>>        }

>>>>
>>>>This code calls the process to go through the list after first building up a list of Primary Keys of the emails to be sent:
>>>>

        private void EmailQueueBackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
>>>>        {
>>>>            // Create the process object in worker thread
>>>>            EmailQueueProcess emailQueue = new EmailQueueProcess();
>>>>
>>>>            // register the handler
>>>>            emailQueue.ProcessStateChange += new ProcessStateChangeEventHandler(SendEmail_ProcessStateChange);
>>>>            
>>>>            // build the list of Primary Keys to process
>>>>            DataTable emailQueuePKs = this.BuildEmailQueuePKsDataTable(); 
>>>>
>>>>            // Kick off the process
>>>>            emailQueue.ProcessQueue(emailQueuePKs); 
>>>>       }

>>>>
>>>>The supporting code for updating the progress bar:
>>>>

>>>>        /// <summary>
>>>>        /// State change handler for the business process
>>>>        /// </summary>
>>>>        /// <param name="sender"></param>
>>>>        /// <param name="e"></param>
>>>>        private void SendEmail_ProcessStateChange(object sender, ProcessStateChangeEventArgs e)
>>>>        {
>>>>            if (e.ProcessState == ProcessState.ProgressChanged)
>>>>            {
>>>>                this.BackgroundWorker.ReportProgress(e.ProgressPercentage, e);
>>>>            }
>>>>
>>>>        }
>>>>
>>>>        /// <summary>
>>>>        /// progress changed handler for the asynch call back of the backround worker
>>>>        /// </summary>
>>>>        /// <param name="sender"></param>
>>>>        /// <param name="e"></param>
>>>>        private void BackgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
>>>>        {
>>>>            ProcessStateChangeEventArgs businessStateArgs = e.UserState as ProcessStateChangeEventArgs;
>>>>            if (businessStateArgs != null)
>>>>            {
>>>>                // Check e.ProcessState enum and the percentage here and set the status bar appropriately
>>>>                if (businessStateArgs.ProcessState == ProcessState.ProgressChanged)
>>>>                {
>>>>                    this.progressBar.Value = e.ProgressPercentage;
>>>>
>>>>                    // can I update the datatable being displayed in the grid?
>>>>
>>>>                }
>>>>            }
>>>>        }

>>>>
>>>>Is there a way for me to hook into this code to update the datagrid to display the updated values?
>
>
>if I remember correctly, The backgroundworker thread can talk to the UI thread, but a regular thread has to be marshaled to the UI thread. If you're using MVVMlight or one of the MVVM frameworks, there are functions to do this.

Hi John,

I am using Mere Mortals which is MVC.