How WPF uses MultiConverter to control Button status

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Requirement description

1. The state of the button needs to be judged by different combinations according to the contents of multiple data sources.

two。 The judgment rules for each data source can be customized.

Note: the following functions feel like a simple and rough implementation, if you know a more elegant solution, please let me know, thank you first!

Button XAML

The code is as follows:

MultiConverter judgment

The code is as follows:

Public class InvalidMultiValidationRuleToBooleanMultiConverter: IMultiValueConverter

{

# region IMultiValueConverter Members

Public object Convert (object [] values, Type targetType, object parameter, CultureInfo culture)

{

String [] paramlist = ((string) parameter) .split ('|')

If (paramlist = = null | | paramlist.Length