Add drop down boxes to GridView Web Form

I just created a gridview to show/edit/delete  data from a table.  The web form uses c# and 4.5.  I am not sure how to add a drop down box to the grid view for two columns.  If someone can direct me and answer any follow-up questions I have, that would be appreciated.
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Priya SudharsanProgrammer AnalystCommented:
Here is an example that clearly explains it. Go through it and post your succeeding queries.
jjrr007Author Commented:
Thanks and sorry for the delay in getting back with you. Is there a way to do this entirely from without using the coding pages (without using C# or vb)?

Doing it just in would be a lot simpler. Thanks again.
jjrr007Author Commented:
I think I just found a way:

Using the link above, no code is added to the C# or VB code when I did it.  The changes are made only in

I will leave this open for a few days in case there are any objections.

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