Error Calling Function

[Jay1b]

At the moment i am just playing around with functions and i keep getting this annoying error message with the code below


'An unhandled exception of type 'System.NullReferenceException' occurred in Procedures and Functions - Hr 10.exe

Additional information: Object reference not set to an instance of an object.'

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
      Dim c As Class1
      Dim i As Integer

      i = c.ComputeLength("hELLO")
      MsgBox(i)

   End Sub

Public Class Class1

   Public Function ComputeLength(ByVal strText As String) As Integer
      Return strText.Length
   End Function


End Class

Can someone please point me in the right direction?

 

[aewarnick]

The error means that an object is not created yet. You have declared here
Dim c As Class1
but you did not initialize it. You did not create it. You made it ready to be created.
c=new Class1(); - c# code, but vb is very similar.

 

[mutant]

Dim c As New Class1

In case like this you should consider making your function shared so you dont have to create class instance everytime.

 

[Jay1b]

Excellent. Thank you once again.