public int BindFrom_ComboBox_Int(ComboBox cb, ErrorControl errctrl, IRule rule)
{
cb.BackColor = Color.Empty;
errctrl.clearError();
int result = 0;
object selected = cb.SelectedItem;
if (selected != null)
{
if (selected is Kunde)
{
result = ((Kunde)selected).Kundenid;
}
else if (selected is Projekt)
{
result = ((Projekt)selected).Projektid;
}
else if (selected is Kontakt)
{
result = ((Kontakt)selected).Kontaktid;
}
else if (selected is Rechnung)
{
result = ((Rechnung)selected).Rechnungid;
}
else if (selected is Buchungskategorie)
{
result = ((Buchungskategorie)selected).Bkatid;
}
}
if (rule != null)
{
if (!rule.Eval(selected, errctrl))
{
haserrors = true;
cb.BackColor = Color.Red;
}
}
return result;
}
public bool Eval(object value, ErrorControl ctrl)
{
if (value is string)
{
if (string.IsNullOrWhiteSpace((string)value))
{
ctrl.setError("Das Feld darf nicht leer sein!");
return false;
}
}
else
{
if (value == null)
{
ctrl.setError("Bitte wählen Sie ein Objekt aus!");
return false;
}
}
return true;
}
public DateTime BindFrom_DateTime(Control ctrl, ErrorControl errctrl, IRule rule)
{
ctrl.BackColor = Color.Empty;
errctrl.clearError();
DateTime result = DateTime.Today;
if (ctrl is DateTimePicker)
{
result = ((DateTimePicker)ctrl).Value;
}
if (rule != null)
{
if (!rule.Eval(result, errctrl))
{
haserrors = true;
ctrl.BackColor = Color.Red;
}
}
return result;
}
public double BindFrom_Double(Control ctrl, ErrorControl errctrl, IRule rule)
{
ctrl.BackColor = Color.Empty;
errctrl.clearError();
double result = 0;
if (!double.TryParse(ctrl.Text, out result))
{
haserrors = true;
ctrl.BackColor = Color.Red;
errctrl.setError("Der Wert muss eine Zahl sein!");
}
if (rule != null)
{
if (!rule.Eval(result, errctrl))
{
haserrors = true;
ctrl.BackColor = Color.Red;
}
}
return result;
}
public string BindFrom_String(Control ctrl, ErrorControl errctrl, IRule rule)
{
ctrl.BackColor = Color.Empty;
errctrl.clearError();
string result = ctrl.Text;
if (rule != null)
{
if (!rule.Eval(result, errctrl))
{
haserrors = true;
ctrl.BackColor = Color.Red;
}
}
return result;
}