// Bind Class To DropDown #region [Bind Class] protected void ddlCourse_SelectedIndexChanged(object sender, EventArgs e) { try { int orgID = Convert.ToInt32(DDL_SelectCollege.SelectedValue); string Course = ddlCourse.SelectedValue; objEWA.OrgID = orgID; objEWA.Course = Course; ds = objBAL.BL_BindBranch(objEWA); ddlBranch.DataSource = ds; ddlBranch.DataTextField = "BranchName"; ddlBranch.DataValueField = "BranchId"; ddlBranch.DataBind(); ddlBranch.Items.Insert(0, "Select"); } catch (Exception) { ddlBranch.Text = "Select"; } }