public sealed override object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (!ValidateConvertParameters(values, targetType))
{
return(default(TTarget));
}
return(Convert(MultiValueHelper.CheckValue <TSource1>(values, 0), MultiValueHelper.CheckValue <TSource2>(values, 1), parameter, culture));
}
public sealed override object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
ValidateConvertBackParameters(value, targetTypes);
MultiValueHelper.CheckType <TSource1>(targetTypes, 0);
MultiValueHelper.CheckType <TSource2>(targetTypes, 1);
TSource1 obj1;
TSource2 obj2;
ConvertBack((TTarget)value, out obj1, out obj2, parameter, culture);
return(new object[] { obj1, obj2 });
}
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values.Length != 2)
{
throw new ArgumentException("Insufficient source parameters: 2");
}
if (values.Any(obj => obj == DependencyProperty.UnsetValue || obj == BindingOperations.DisconnectedSource))
{
return(default(TTarget));
}
MultiValueHelper.CheckValue <TSource1>(values, 0);
MultiValueHelper.CheckValue <TSource2>(values, 1);
if (!targetType.IsAssignableFrom(typeof(TTarget)))
{
throw new InvalidOperationException(string.Format("Target is not from Type: {0}", typeof(TTarget).FullName));
}
return(Convert((TSource1)values[0], (TSource2)values[1], parameter, culture));
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
if (targetTypes.Length != 2)
{
throw new ArgumentException("Insufficient source parameters: 2");
}
if (!(value is TTarget) && (value != null || typeof(TTarget).IsValueType))
{
throw new ArgumentException(string.Format("Value is not from Type: {0}", typeof(TTarget).FullName));
}
MultiValueHelper.CheckType <TSource1>(targetTypes, 0);
MultiValueHelper.CheckType <TSource2>(targetTypes, 1);
TSource1 out1;
TSource2 out2;
ConvertBack((TTarget)value, out out1, out out2, parameter, culture);
return(new object[]
{
out1, out2
});
}
