[DotNetDevelopment] Hourglass issues

[Tom]

I am having troble changing the cursor into an hour glass.  In this
code, when you click the "hour glass" button, the cursor changes into
an hourglass.  When you click the "normal" button, the cursor returns
to normal.

        private void button1_Click(object sender, EventArgs e)
        {
            Application.UseWaitCursor = true;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.UseWaitCursor = false;
        }

In this code, the cursor does not turn into an hourglass until after
the program finishes the for loop.  How do I get the cursor to change
into an hourglass immediately after the command
Application.UseWaitCursor = true?  Am I using the wrong command?

        private void button1_Click(object sender, EventArgs e)
        {
            Application.UseWaitCursor = true;
            MessageBox.Show("Max value for a int " +
int.MaxValue.ToString());
            for (int x=0; x < int.MaxValue; x++)
                ;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.UseWaitCursor = false;
        }

Thanks in advance for you help.