![]() The style resources referenced in the above example are defined in a resource section not shown in this topic. In the following example, the text content of the TextBlock is bound to StartDate, which is a property of an external data source. įinally, you can use the converter in your binding using the following syntax. In the following example, src maps to the namespace in which DateConverter is defined. Once you have created a converter, you can add it as a resource in your Extensible Application Markup Language (XAML) file. If DateTime.TryParse(strValue, resultDateTime) Then ![]() Public Function ConvertBack(ByVal value As Object,Īs Object Implements .ConvertBack Public Function Convert(ByVal value As Object,Ä«yVal culture As ) _Īs Object Implements .ConvertÄim DateValue As DateTime = CType(value, DateTime) Returns Object A Color that represents the converted text. C public static object ConvertFromString (string value) Parameters value String The string to convert to a Color. If (DateTime.TryParse(strValue, out resultDateTime)) Media Assembly: PresentationCore.dll Attempts to convert a string to a Color. ![]() Public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) Public object Convert(object value, Type targetType, object parameter, CultureInfo culture) Public class DateConverter : IValueConverter When implementing the IValueConverter interface, it is a good practice to decorate the implementation with a ValueConversionAttribute attribute to indicate to development tools the data types involved in the conversion, as in the following example: The following example shows the implementation of a date converter that converts the date value passed in so that it only shows the year, the month, and the day. To convert data during binding, you must create a class that implements the IValueConverter interface, which includes the Convert and ConvertBack methods. If (parameter != null & parameter.This example shows how to apply conversion to data that is used in bindings. Public class BooleanToColorConverter : IValueConverter You can use it for different scenarios as shown below. Text) => use IValueConverterĪlthough a Converter was already posted I have created a BooleanToColorConverter which is more reusable. I want to display an objects value in a specific way (e.g. I have a wpf application in which I'd like to convert a color of radio button to (Green/Red) compared to a boolean value : In Xaml File .I want to indicate a state => use Trigger In order to work around this you must specify colours using the FromHex approach and converting as appropriate e.g. The second version works better for more complex conversions (like converting a complete object to a formatted string) but can not be easily used to update multiple visual properties. In direct answer to the question, you cannot specify a x:FactoryMethod'FromRgb' in xaml for specifying colours in RGB from resources. ![]() I would recommend the first version if you only have a very limited range of values that the property can take and/or you want to update multiple visual properties at once. The other option is to use the IValueConverter interface and convert the boolean to a color. Information about this can for example be found here: This would be implemented in xaml and simply watched the bound property to take a specific value (in you case true or false) and updates the color accordingly. The first option is to update the property of the text using a trigger. You have two options here, for both of which I will simply provide some resources as you did not provide any specific code:
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