// Helper method to validate record details
private bool ValidateRecord(SaleCl record) /*****M*/
{
string validationErrors = string.Empty;
bool hasErrors = false;
if (string.IsNullOrWhiteSpace(record.Date))
{
hasErrors = true;
validationErrors = "Name must not be empty\n";
}
if (string.IsNullOrWhiteSpace(record.Date))
{
hasErrors = true;
validationErrors = "Surname must not be empty\n";
}
// Email address is a series of characters that do not include a space or @
// followed by @
// followed by a series of characters that do not include a space or @
// followed by .
// followed by a series of characters that do not include a space or
this.LastError = validationErrors;
return(!hasErrors);
}
// Utility method for copying the details of a record
private void CopyRecord(SaleCl source, SaleCl destination) /*****M*/
{
destination.SalesID = source.SalesID;
destination.EmpID = source.EmpID;
destination.CustID = source.CustID;
destination.Date = source.Date;
}
// Create a new (empty) record
// and put the form into Adding mode
private void Add()
{
SaleCl newRecord = new SaleCl {
SalesID = 0
}; /*****2*/
this.recordList.Insert(recordIndex, newRecord);
this.IsAdding = true;
this.OnPropertyChanged(nameof(Current));
}
private SaleCl oldRecord; /*****/
private void Edit()
{
this.oldRecord = new SaleCl(); /*****/
this.CopyRecord(this.Current, this.oldRecord);
this.IsEditing = true;
}