gridview_rowEditing

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protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindGrid();

GridViewRow grow = (GridViewRow)GridView1.Rows[e.NewEditIndex];
DropDownList ddlR = new DropDownList();
ddlR = (DropDownList)grow.FindControl("ddlrole");

DropDownList ddlC = (DropDownList)grow.FindControl("ddlcnt");

if (ddlR != null)
{
ddlR.DataSource = GetRoles();
ddlR.DataTextField = "role";
ddlR.DataValueField = "ID";
ddlR.DataBind();

}
string r = ViewState["role"].ToString();
ddlR.Items.FindByText(r).Selected = true;


if (ddlC != null)
{
ddlC.DataSource = GetCountry();
ddlC.DataTextField = "countryname";
ddlC.DataValueField = "countryid";
ddlC.DataBind();

}
string c = ViewState["cnt"].ToString();
ddlC.Items.FindByText(c).Selected = true;
}