private void iniciarLlenadoDropDown1()
{
cmbCP1.ValueMember = "Id";
cmbCP1.DisplayMember = "Nombre";
cmbCP1.DataSource = oClientesDAL.mostrarProveedores().Tables[0];
cmbCP1.SelectedItem = null;
}
private void llenadoDropDownProveedores()
{
cmbProveedor.ValueMember = "Id";
cmbProveedor.DisplayMember = "Nombre";
cmbProveedor.DataSource = oMercadosDAL.mostrarProveedores().Tables[0];
cmbProveedor.SelectedItem = null;
}