public void LlenarCMBUsuarios() { /*SqlConnection cnn = new SqlConnection(ConfigurationManager.AppSettings.Get("strConnection"));*/ string conexion = ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString; SqlConnection cnn; cnn = new SqlConnection(conexion); cnn.Open(); SqlCommand objsqlcommand = new SqlCommand("SP_Catalogo_Usuario", cnn); objsqlcommand.CommandType = CommandType.StoredProcedure; objsqlcommand.Parameters.AddWithValue("@Opcion", "COMBO"); SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(objsqlcommand); DataTable dt = new DataTable(); sqlDataAdapter.Fill(dt); Id_Usuario.DataTextField = "NombreCompleto"; Id_Usuario.DataValueField = "Id_Usuario"; Id_Usuario.DataSource = dt; Id_Usuario.DataBind(); Id_Usuario.Items.Insert(0, new ListItem("[Seleccionar]", "0")); Id_Usuario.SelectedIndex = 0; objsqlcommand.ExecuteNonQuery(); }