I'm going to assume that you have a datagrid with only 2 columns, the 1st
one you want displayed, they 2nd one you want hidden.

If you are letting the datagrid automatically generate the columns at
runtime, you would put something like this in your Page_Load handler:

MyDataGrid.Columns[1].Visible = false;        // rows/columns index starting
at 0.

If you have set AutoGenerateColumns to false for your datagrid, just go to
the datagrid's Collections property, open up the dialog, go to the "Columns"
page and uncheck "Visible" for the column you want to hide.

HTH.

Paul

Wallace,

You can make it with stylesheets. For the columns you want to hide set
CssClass="Invisible" and define Invisible in a stylesheet as
.Invisible {display:none}

Eliyahu