Problems with Columns.Add C#/ASP.NET 2

[aairwaves]

Hi winder if you guys can help me? I have the following code:

BoundColumn col1 = new BoundColumn();
gv.DataSource = ds.Tables[0].DefaultView;

col1.HeaderText = "asdasdasdasdasdasda";
col1.DataField = "ContactName";
gv.Columns.Add(col1); // error here

gv.DataBind();

I keep getting an error on :

gv.Columns.Add(col1);

I get a error line under the gv:

"Only assignment, call, increment, decrement, and new object expressions can be used as a statement"

an an error under the col1:

"Argument '1': cannot convert from 'System.Web.UI.WebControls.BoundColumn' to 'System.Web.UI.WebControls.DataControlField'"

Any ideas as to what the problem is?

Thanks