private void MostrarCb()
{
NCausa obj = new NCausa();
cbRol.DataSource = obj.Listar();
cbRol.DisplayMember = "ROL";
cbRol.ValueMember = "ROL";
}
private void Mostrar()
{
NCausa obj = new NCausa();
dataListado.DataSource = obj.Listar();
dataListado.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
dataListado.Columns[6].Visible = false;
dataListado.Columns[7].Visible = false;
dataListado.Columns[8].Visible = false;
}