VB.NET Inputbox - How to identify when the Cancel Button is pressed?

input = InputBox("Text:")

If input <> "" Then
   ' Normal
Else
   ' Cancelled, or empty
End If

From MSDN:

If the user clicks Cancel, the function returns a zero-length string ("").

Here is what I did and it worked perfectly for what I was looking to do:

Dim StatusDate As String
 StatusDate = InputBox("What status date do you want to pull?", "Enter Status Date", " ")

        If StatusDate = " " Then
            MessageBox.Show("You must enter a Status date to continue.")
            Exit Sub
        ElseIf StatusDate = "" Then
            Exit Sub
        End If

This key was to set the default value of the input box to be an actual space, so a user pressing just the OK button would return a value of " " while pressing cancel returns ""

From a usability standpoint, the defaulted value in the input box starts highlighted and is cleared when a user types so the experience is no different than if the box had no value.