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Column named "XYZ" cannot be found. Parameter name: columnName

Posted By:      Posted Date: December 04, 2010    Points: 0   Category :Windows Application


I have a gridview named "dgvSchedules"
This grid has 2 columns "Trip_ID" and "Dispatch".
When the column named Dispatch is a text box column, this following code worked great.
I changed this column to a combobox column and i am getting the error mentioned below.
Why is it failing to recognize the column name when i changed it to a combobox?
What should i do to make it work?

Error: Column named Dispatch cannot be found. Parameter name: columnName

 Dim mytripID As String = Nothing
      Dim dispatchCd As String = Nothing
      mytripID = dgvSchedules.CurrentRow.Cells("Trip_ID").Value.ToString
      dispatchCd = dgvSchedules.CurrentRow.Cells("Dispatch").Value.ToString


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