private void DisplayInvoice()
{
if (CurrentSelectedInvoice != null)
{
InvoiceTxtbox.Text = CurrentSelectedInvoice.InvoiceID.ToString();
v.Text = CurrentSelectedInvoice.InvoiceDateTime.ToString();
CustNameTxbox.Text = CurrentSelectedInvoice.CustomerName;
CustEmailTxtbox.Text = CurrentSelectedInvoice.CustomerEmail;
CustAddressTxbox.Text = CurrentSelectedInvoice.CustomerAddress;
//if items are shipped, checkbox is checked
if ((bool)CurrentSelectedInvoice.Shipping == true)
{
ShippedChckbox.IsChecked = true;
}
else
{
ShippedChckbox.IsChecked = false;
}
}
else
{
InvoiceTxtbox.Clear();
CustNameTxbox.Clear();
CustEmailTxtbox.Clear();
CustAddressTxbox.Clear();
}
}
//to check if some information users put is empty.
bool IsInvoiceDataValid()
{
if (CustNameTxbox.Text == "" || CustEmailTxtbox.Text == "" || v.Text == "")
{
//Place the focus on the first invalid textbox
if (CustNameTxbox.Text == "")
{
CustNameTxbox.Focus();
}
if (CustEmailTxtbox.Text == "")
{
CustEmailTxtbox.Focus();
}
if (v.Text == "")
{
v.Focus();
}
return(false);
}
else
{
return(true);
}
}
private void NewBtn_Click(object sender, RoutedEventArgs e)
{
InvoiceTxtbox.Clear();
CustNameTxbox.Clear();
CustEmailTxtbox.Clear();
CustAddressTxbox.Clear();
isNewRecord = true;
}
private void NewBtn_Click(object sender, RoutedEventArgs e)
{
//to clear all textbox and be ready to save
InvoiceTxtbox.Clear();
CustNameTxbox.Clear();
CustEmailTxtbox.Clear();
CustAddressTxbox.Clear();
MessageTextBox.Clear();
isNewRecord = true;
}
