private void tbnAssignEmployee_Click(object sender, RoutedEventArgs e)
{
if (comboShopsLoanedID.SelectedValue != null && comboShopsLoanedID.SelectedValue != null)
{
int fid1 = int.Parse(comboShopsLoanedID.SelectedValue.ToString());
int fid = int.Parse(comboEmployeeNotAssigned.SelectedValue.ToString());
connection.AssignEmployee(fid1, fid);
MessageBox.Show("Assign succeesfully");
}
else
{
MessageBox.Show("Enter the information");
}
}