Data Type VB.Net Tutorial

public class Test
   public Shared Sub Main
        Dim strCaption As String
        strCaption = "Answer"
        Try
            Console.WriteLine(strCaption.Substring(10, 1))
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
   End Sub
End class
startIndex cannot be larger than length of string.
Parameter name: startIndex