Object reference not set to an instance of an object

[cmtek]

I have a button within a DataGrid using a buttoncolumn.
When clicking the button it should call my Function SubmitAction.
When attempting to execute the call this is the error.

Exception Details: System.NullRefe renceException: Object reference not set to an instance of an object.

Line 72: newinfo.SubmitA ction(reginfo.T ables(0).Rows(c ount)("CourseSc heduleID").ToSt ring(), username, username)

[axas]

Usually this error occurs when you have not being initialize an object.
Check the initialization of the object first, otherwise send me your code or
a part of your code.

Axas.