Question

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How to catch exceptions

I have not really had to use try and catch exceptions. I am trying to use a try/catch to trap for potential errors. Now I am not to sure where to put the try and catch this is the code I have right now..

 divide d;
    private void button1_Click(object sender, EventArgs e)
    {
        d = new divide(int.Parse(textBox1.Text), int.Parse(textBox2.Text));
        int total = d.CalculateDivision();
        MessageBox.Show(total.ToString());
    }

now would I put it under here with

try
{

}
catch
{
MessageBox.Show("error");
}

or would I add the try/ catch somewhere in the code.

Answer 1

see http://msdn.microsoft.com/en-us/library/ms173160.aspx

The try goes around the code where the exception is thrown and the value is handled. in your example:

 divide d;
private void button1_Click(object sender, EventArgs e)
{
  try
  {

    d = new divide(int.Parse(textBox1.Text), int.Parse(textBox2.Text));
    int total = d.CalculateDivision();
    MessageBox.Show(total.ToString());
  }
  catch(Exception)
  {
     MessageBox.Show("error");
  }
}

as you can only show the total if there is no exception.