How do you acces a cell with the column unique name

[FQ]

I also would like to now how to hide a column?

[Princy]

Hello DT,

Check out the following code snippet to hide a column.
cs:

  protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        foreach (GridColumn column1 in RadGrid1.MasterTableView.RenderColumns)
        {
            if (column1.UniqueName == "LastName")
            {
               column1.Visible = false;
            }
        }
    }

You can also go through the following link and see if it helps.
Accessing cells and rows

Thanks
Princy.