private bool IsValid()
{
bool result = true;
errorProvider.SetError(txtStaffNumber, string.Empty);
#region Staff Number 唔可以吉
errorProvider.SetError(txtStaffNumber, string.Empty);
if (txtStaffNumber.Text.Trim() == string.Empty)
{
errorProvider.SetError(txtStaffNumber, "Cannot be blank!");
return(false);
}
#endregion
#region 新增，要 check Staff Number 係咪 in use
if (_EditMode == EnumHelper.EditMode.Add && txtStaffNumber.Text.Trim() != string.Empty)
{
if (StaffEx.IsStaffNumberInUse(txtStaffNumber.Text.Trim()))
{
errorProvider.SetError(txtStaffNumber, "Staff Number in use");
return(false);
}
}
#endregion
return(result);
}