I am trying to create and fill columns in a ASP.Net webform GridView dynamically. I can successfully add a BoundField column to the GridView, but how can I add a HyperLinkField column to the GridView? I keep getting an error on the DataNavigateUrlFields line.

Below is my routine

private void AddField(GridView gv, string datafield, string caption)
{
HyperLinkField hf = new HyperLinkField();
hf.HeaderText = caption;
hf.DataNavigateUrlFields = datafield   //Gives error
hf.DataNavigateUrlFormatString = "myform.aspx?part={0}"
hf.DataTextField = datafield;
hf.DataTextFormatString = datafield;
gv.Columns.Add(hf);
}

Thanks,

Jerry