System.Windows.Controls.EnumToBooleanConverter.ConvertBack C# (CSharp) Method

EnumToBooleanConverter Class Documentation Datei anzeigen Open project: lecode-official/mvvm-framework

ConvertBack() public method

Converts a boolean value back to an enum value.

public ConvertBack ( object value, Type targetType, object parameter, CultureInfo culture ) : object
value	object	The value that is to be converted.
targetType	Type	The type to which the value is to be converted. In this case it is an enum type.
parameter	object	A parameter whose enum value is returned.
culture	System.Globalization.CultureInfo	The culture information of the current culture, so that parsing can be adjusted to cultural conventions.
return	object

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            // Determines whether the target type is nullable
            bool isNullable = targetType.Name == typeof(Nullable<>).Name;
            Type enumerationType = isNullable ? targetType.GenericTypeArguments.FirstOrDefault() : targetType;

            // Gets the parameter and check if it is null, if so then the default value for the target type is returned
            string enumValueName = parameter as string;
            if (enumValueName == null)
                throw new ArgumentException("The parameter was not set.");

            // Converts the parameter to its target value
            if ((bool)value)
                return Enum.Parse(enumerationType, enumValueName);
            else
                return DependencyProperty.UnsetValue;
        }

EnumToBooleanConverter

Convert

ConvertBack