How to hide a column (GridView) but still access its value?

Question

I have a GridView with a DataSource (SQL Database). I want to hide a column, but still be able to access the value when I select the record. Can someone show me

Answer 1

You can use DataKeys for retrieving the value of such fields, because (as you said) when you set a normal BoundField as visible false you cannot get their value.

In the .aspx file set the GridView property

DataKeyNames = "Outlook_ID"

Now, in an event handler you can access the value of this key like so:

grid.DataKeys[rowIndex]["Outlook_ID"]

This will give you the id at the specified rowindex of the grid.