} //end populateInventory()
/// <summary>
/// If there is an invoice number, get the data from the database and populate the datatable and dataset.
/// If there is not in invoice given, set up the table to be able to accept inventory items.
/// </summary>
/// <param name="invoiceId"></param>
public void populateInvoice(String invoiceId)
{
///try catch block to handle exceptions
try
{
///if statement to check invoice ID and populate invoice
if (invoiceId != "")
{
///sets delete invoice to enabled
btnDeleteInvoice.IsEnabled = true;
///sets label with number
lblInvoiceNumber.Content = invoiceId;
///creates a string to hold invoice id info
String sQuery = mydb.SelectItemsOnInvoice(invoiceId);
///executes query
dtInvoice = db.FillSqlDataTable(sQuery);
///populates grid
dgInvoiceItems.ItemsSource = dtInvoice.DefaultView;
///creates a return variable
int iRet = 0;
///creates a data set
DataSet ds = new DataSet();
///calls a sql method
String sSQL = mydb.SelectInvoiceDateFromNum(invoiceId);
///places info in data set
ds = db.ExecuteSQLStatement(sSQL, ref iRet);
///creates temp variable to hold info
String date = ds.Tables[0].Rows[0][0].ToString();
///takes care of the date format
invoiceDatePicker.SelectedDate = DateTime.Parse(date);
//pulls data from database
//UPDATE INVOICE LABEL WITH INVOICEID - lblInvoiceId
}
else
{
///if all the above fails, then do this
btnDeleteInvoice.IsEnabled = false;
//fields should be clear and ready for input.
dtInvoice.Columns.Add("ItemDesc");
dtInvoice.Columns.Add("Cost");
///populatse invoice items
dgInvoiceItems.ItemsSource = dtInvoice.DefaultView;
}//end else
}
catch (Exception)
{///catch exceptions
MessageBox.Show(MethodInfo.GetCurrentMethod().DeclaringType.Name);
}//end catch
}//end populateInvoice()