Question

I am using a DataGridView control in WinForm. When I click the ColumnHeader an Exception was met. it points to the line:

 m_iSWId = Convert.ToInt32(DataGViewDetails.CurrentRow.Cells[8].Value.ToString() 

i am getting NullReferenceException

How to solve this?

Answer 1

It seems CurrentRow selects only rows not columns(column headers)

Assuming you are doing this in DataGridView_Click Event, Wrap your code with the below one:

if(e.ColumnIndex >= 0)
{     
     //Your code here   
}