How to show application is buisy in csharp

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Hi Sir

In my c sharp winform application,I am inserting multiple rows.It takes 1 min.In

That time i have to show picture box enabled and other controls gets blocked indicating process is running.

In my save button click,i am calling that long running process.
like

C#

private void button2_Click(object sender, EventArgs e)
      {
          if (isFiletypeSelect())
          {
              if (cmbSelectFileType.Text == "Text")
              {
                  if (validation())
                  {
                      pictureBox1.Visible = true;
                      uploadUsingText();  
                      pictureBox1.Visible = false;
                  }
              }

}
}

In above example uploadUsingText() is long running process.

before this method I am showing picture and after this hiding it.

but it not working.
If i remove pictureBox1.Visible = false;

pictureBox visible after method finished.

please give me solution or any other change is acceptable.

Posted 24-Aug-11 20:36pm

udusat13

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Wayne Gaylard · Answer 1 · 2011-08-24T20:57:00

Your best bet would be use a separate thread to do the long process. If you are using .Net 4.0 then you could use Tasks like this:

private void button2_Click(object sender, EventArgs e)
       {
           pictureBox1.Visible = true;
           button2.Enabled = false;//disable button so user cannot press until first task is finished
           TaskScheduler UISyncContext = TaskScheduler.FromCurrentSynchronizationContext();
           Task task1 = Task.Factory.StartNew(() => uploadUsingText()).ContinueWith((t) =>
               {
                   pictureBox1.Visible = false;
                   button2.Enabled = true;
               }, UISyncContext);
       }

This assumes that you initially set your picturebox to Visible = false in your designer. I would also suggest you give your control meaningful names. pictureBox1 and button2 are not really a good idea.

According to your comment you are using .Net 3.5. In that case I would simply use a BackGroundWorker to do the long process. Create a BackGroundWorker in your designer and then you could do something like this:

C#

public Form1()
        {
            InitializeComponent();
            button2.Click += new EventHandler(button2_Click);
            this.backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);
            this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
        }

        void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            uploadUsingText();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.panel1.Enabled = false;
            this.pictureBox1.Visible = true;
            this.backgroundWorker1.RunWorkerAsync();
        }

        void uploadUsingText()
        {
            Thread.Sleep(60000);//simulate long process that takes 1 minute
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            this.panel1.Enabled = true;
            this.pictureBox1.Visible = false;
        }

Hope this helps