What is a Try/Catch block?

A Try/Catch block is a code block that is used to handle runtime errors. Code that is expected to raise an exception is written inside the Try statement. The Catch statement catches the exception raised during a program execution and throws the specific exception. For example,

Private Sub MyButton1_Click(ByVal sender As System.Object, ByVal e As _
System.EventArgs) Handles MyButton1.Click
  Try
     Process.Start(”http://www.ucertify.com”)
Catch ex As Exception
     MsgBox(”Sorry, cannot load the uCertify Home Web page”)
  End Try
End Sub

Note: Multiple Catch statements in the Try/Catch block can also be specified so that each Catch block of statement handles a specific type of error.

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