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Controls cannot be made visible after a thread run

Discussion in 'C#' started by Leo, Nov 23, 2006.

  1. Leo

    Leo New Member

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    I have a thread which runs a method. In that method i am making use of progressbar but after that method gets over that progress bar becomes invisible and eventhough i make them visible they does nto become visible.
    Code:
     private void StartLoadProcess(string filePath) 
        { 
          try 
          { 
            _cancelButton.Visible = false; 
             Thread workerThread = new Thread(DoUploadProcess); 
            
            // Start the [URL=http://www.go4expert.com/articles/worker-threads-mfc-t3197/]worker thread[/URL]. 
            workerThread.Start(); 
            while (workerThread.ThreadState.ToString().ToLower() == "running") 
            { 
              _cancelButton.Visible = true; // making Button Visible 
              _cancelButton.Refresh(); // Invalidating it 
              _cancelButton.Focus(); // setting the focus 
              Application.DoEvents(); 
            } 
            workerThread.Abort(); 
    
            this._progressbarLabel.Visible = true; -------------------This code will not work at all 
            this._statusProgressBar.Visible = true; -------------------This code will not work at all 
             
            _cancelButton.Visible = true; 
             this.PrepareStatusTree(); 
    
            //Enable the timer to load the tree until the load is completed 
            this._timer.Enabled = true; 
            this._loadFileStatus.Visible = false; 
          }
     
  2. shabbir

    shabbir Administrator Staff Member

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    That should not be happening. Have you seen if it causes an exception of type thread unsafe operation.

    Also do use the code block for putting code in post.
     

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