/// <summary>
/// To either show or hide the approperiate textboxes for entry to the user.
/// </summary>
/// <param name="sender">RBtn_PerPound_CheckedChanged</param>
/// <param name="e">Not Used</param>
private void RBtn_PerPound_CheckedChanged(object sender, EventArgs e)
{
TxtBx_PerItem.Visible = false;
Lbl_PerItem.Visible = false;
TxtBx_PerItem.Clear();
TxtBx_PerPound.Visible = true;
Lbl_PerPound.Visible = true;
TxtBx_PerPound.Text = POUND_START;
TxtBx_PerPound.Focus();
TxtBx_PerPound.SelectAll();
sl.SetCategory = SHIP_COST.B;
}
/// <summary>
/// To test for bad input
/// </summary>
/// <returns>Upon bad input, it returns false so the process can stop until good data is entered</returns>
private bool TestForInvalid()
{
Err_Provider.Clear();
//Condition will test bool if it can prase or not, as well as, if the value is too low
if (RBtn_PerItem.Checked == true)
{
if (!(int.TryParse(TxtBx_PerItem.Text, out _testPerItem)) || _testPerItem <= 0)
{
Err_Provider.SetError(TxtBx_PerItem, ERR_ITEMS);
TxtBx_PerItem.Focus();
TxtBx_PerItem.SelectAll();
return(false);
}
else
{
sl.NumItems = _testPerItem;
return(true);
}
}
//Condition will test bool if it can prase or not, as well as, if the value is too low
else if (RBtn_PerPound.Checked == true)
{
if (!(double.TryParse(TxtBx_PerPound.Text, out _testPerPound)) || _testPerPound <= 0)
{
Err_Provider.SetError(TxtBx_PerPound, ERR_LBS);
TxtBx_PerPound.Focus();
TxtBx_PerPound.SelectAll();
return(false);
}
else
{
sl.NumPounds = _testPerPound;
return(true);
}
}
//If everything checks out, it will return true and allow the code to show the message box salesInvoice
else
{
return(true);
}
}