try, catch to get file not found

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Why I am not shown the message box?, I can just see the error in the output "A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll"

C#

private void btnLoadWeigths_Click(object sender, EventArgs e)
      {
          try
          {
              wieghtL = loadNN("Weights.data");
              loadWeigths = true;
              checkWeight();
          }
          catch //(System.IO.FileNotFoundException)
          {
              MessageBox.Show("Wieights.data Not Found");
          }
      }

Posted 23-Nov-12 20:24pm

datt265

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2 solutions

Solution 2

Are you sure that loadNN does not already have its own try/catch for that purpose? In that case, you might see the exception while debugging depending on your exception configuration Inside Visual Studio.

If you have the whole sopurce code, it should be fairly easy to see in the debugger assume that Visual Studio is configured to break on exceptions (of this type).

Posted 24-Nov-12 3:06am

Philippe Mori

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Bhushan Shah1988 · Accepted Answer · 2012-11-23T20:43:00

Solution 1

you can use something like below :

C#

if (File.Exists(YourFilePath))
{
       wieghtL = loadNN("Weights.data");
       loadWeigths = true;
       checkWeight();
}
else
{
     MessageBox.Show("Wieights.data Not Found");
}

Posted 23-Nov-12 20:43pm

Bhushan Shah1988