Hi Sachin,
on the grid row bound event
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
Control ctrl = e.Row.FindControl("ddlName");
if (ctrl != null)
{
DropDownList ddl = (DropDownList)ctrl;
DataTable dt =GetData();
ddl.DataSource = dt ;
ddl.DataTextField = "Name";
ddl.DataValueField = "Id";
ddl.DataBind();
}
}