How to Add an Image Commandfield to Gridview dynamically in asp.net

Adding Commandfield to Gridview dynamically in pageload with not IsPostBack

Add the following Namespace in the top for CommandField   :

using System.Web.UI.WebControls;

then

protected void Page_Load(object sender, EventArgs e)

    {

        if (!Page.IsPostBack)

        {

          CommandField   cmdfld = new CommandField();
           //Specify Image path

            cmdfld.SelectText = "<img src='./_images/EditIcon.gif'>";

            cmdfld.ShowSelectButton = true;

            cmdfld.HeaderText = "Edit";

            cmdfld.HeaderStyle.HorizontalAlign = HorizontalAlign.Left;

            GridView1.Columns.Add(cmdfld);

            GridView1.DataBind();

        }

    }