[DotNetDevelopment] Populate dropdown list values in gridview based on gridview data value

[Stacie]

I'm using a gridview in a web form and have made one of my fields a
template field. I then added a dropdown list in my edititemtemplate
for this field. I would like to populate this dropdown list with data
based on another field (textbox) in the gridview. How do I reference
the textbox field located in my gridview for my sql data source code?