Wpf Binding Cheatsheet Version (Page 3 of 3) in pdf

using TemplateBinding instead.

Can’t be used if ElementName or Source is set.

Source

Object to use as the binding source.

Can’t be used if ElementName or RelativeSource is set

StringFormat (3.5sp1)

Format string to use when converting the bound value to a string.

Works only if the target property is of type string.

TargetNullValue (3.5sp1)

Value to use when the bound value is null.

UpdateSourceExceptionFilter

Custom logic for handling exceptions that the binding engine encounters.

Only if you add an ExceptionValidationRule to ValidationRules or set

ValidatesOnExceptions.

UpdateSourceTrigger

timing of binding source updates, possible options:



Default - The default UpdateSourceTrigger value of the

binding target property. The default is usually PropertyChanged,

while the Text property is LostFocus.



PropertyChanged - Updates the binding source immediately

whenever the binding target property changes.



LostFocus - Updates the binding source whenever the binding

target element loses focus.



Explicit - Updates the binding source only when you call the

UpdateSource method.

ValidatesOnDataErrors (3.5sp1)

Use IDataErrorInfo when validating.

ValidatesOnExceptions (3.5sp1)

Treat exceptions as validation failures.

ValidationRules

Collection of rules that check the validity of the user input.

XPath

XPath query that returns the value on the XML binding source to use.

Top

The Internationalization Fix

By default, when you use data binding and the target property is a string, WPF will format your

value using the US English culture, to use the correct setting the user seletceted in the control

panel add the following code before loading any GUI (the Application.Startup event is a good

place)

FrameworkElement.LanguageProperty.OverrideMetadata(

typeof(FrameworkElement),

new

FrameworkPropertyMetadata(

XmlLanguage.GetLanguage(

CultureInfo.CurrentCulture.IetfLanguageTag)));

Wpf Binding Cheatsheet Version Page 3

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