public void LoadRol() { try { RoleBLL RoleBLL = new RoleBLL(); DataTable Roles; Roles = RoleBLL.All(); comboBoxRol.DisplayMember = "Text"; comboBoxRol.ValueMember = "Value"; List <Object> items = new List <object>(); items.Add(new { Text = "Seleccione un opciĆ³n", Value = "0" }); foreach (DataRow Rol in Roles.Rows) { items.Add(new { Text = Rol[RoleML.DataBase.Name].ToString(), Value = Rol[RoleML.DataBase.Id].ToString() }); } comboBoxRol.DataSource = items; } catch (Exception ex) { MessageBox.Show(String.Format("LoadJobs: {0}", ex.Message), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }