private void btnEliminar_Click(object sender, EventArgs e)
 {
     if (this.dgvRoles.RowCount >= 1)
     {
         if (MessageBox.Show("Realmente quiere elimar este registro?", "Aviso...!!", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
         {
             roles nRoles = new Modelo.roles();
             nRoles.pkRol   = Convert.ToInt32(this.dgvRoles.CurrentRow.Cells[0].Value);
             nRoles.sNombre = this.dgvRoles.CurrentRow.Cells[1].Value.ToString();
             nRoles.bStatus = false;
             ControladorRol cRoles = new ControladorRol();
             cRoles.Modificar(nRoles);
             this.cargarRoles();
         }
     }
 }
        private void btnGuardar_Click(object sender, EventArgs e)
        {
            if (txtRol.Text == "")
            {
                ErrorProvider.SetError(txtRol, "Campo necesario");
                ErrorProvider.SetIconAlignment(txtRol, ErrorIconAlignment.MiddleRight);
                txtRol.Focus();
            }
            else
            {
                roles nRol = new Modelo.roles();
                nRol.sNombre = txtRol.Text.Trim();

                ControladorRol cRol = new ControladorRol();
                cRol.Guardar(nRol);

                wMain.cargarRoles();
                this.Close();
            }
        }
        private void btnGuardar_Click(object sender, EventArgs e)
        {
            if (txtRol.Text == "")
            {
                ErrorProvider.SetError(txtRol, "Campo necesario");
                ErrorProvider.SetIconAlignment(txtRol, ErrorIconAlignment.MiddleRight);
                txtRol.Focus();
            }
            else
            {
                roles nroles = new Modelo.roles();
                nroles.pkRol   = frmMainRoles.PKROLES;
                nroles.sNombre = txtRol.Text;

                ControladorRol croles = new ControladorRol();
                croles.Modificar(nroles);

                wMain.cargarRoles();
                this.Close();
            }
        }