How to know the columns of gridview which has updated?
<p>I am working on gridview in c# using .net 2.0.I have requriement like, there is only one columns in gridview and 5 columns in that grid.
Edit/update option is there for grid.When i click on edit 4 columns are editable out of 5.
Now user update only 2 columns says like col2, col3 etc. 
Now i have to send email based on updated columns.</p>

<p>My problem is how to identify that only col2, col3 has updated.</p>
