Exception Catching Oddness

[Laeg]

I have some code that goes

Dim DRDataTable As DataTable

Try
  FunctionThatReturnsADataset(MyDataSet)
  DRDataTable = MyDataSet.Tables(0)
  
  ' Processing ...
Catch ex As MyCustomException
 
End Try

Public Class MyCustomException
    Inherits System.Exception
    Public Sub New(ByVal Message As String)
        MyBase.New()
    End Sub
End Class

and when the dataset is empty and this line
DRDataTable = MyDataSet.Tables(0)
returns an error it does not get caught, why is this?

 

[RiverGuy]

It's because you are only catching a MyCustomException. Since your objects don't know how to throw that custom exception, they won't. So you should catch a general exception.