WPF binding 参考
Introduction
This is an article on WPF Binding Cheat Sheet. Some of the Binding won't work for Silverlight 3.
Basic Binding |
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{Binding} | Bind to current DataContext. |
{Binding Name} | Bind to the "Name" proeprty of the current DataContext. |
{Bindind Name.Length} | Bind to the Length property of the object in the Name property of the current DataContext |
{Binding ElementName=SomeTextBox, Path=Text} | Bind to the "Text" property of the element XAML element with name="SomeTextBox" or x:Name="SomeTextBox". |
XML Binding |
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{Binding Source={StaticResource BooksData} XPath=/books/book} | Bind the result of XPath query "/books/book" from the XML in the XmlDataProvider in a parent's "Resources" elememt with x:Key="BooksData". |
{Binding XPath=@name} | Bind to the result of an XPath query run on the XML node in the DataContext (for example in an ItemControl's DataTemplate when the ItemsControl.ItemsSource is bound to an XML data source). |
Relative Source Binding |
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{Binding RelativeSource={RelativeSource Self}} | Bind to the target element. |
{Binding RelativeSource={RelativeSource Self}, Path=Name} | Bind to the "Name" property of the target element. |
{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=Title} | Bind to the title of the parent window. |
{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ItemsControl}, AncestorLevel=2}, Path=Name} | Bind the the name of the 2nd parent of type ItemsControl. |
{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Name} | Inside a control template, bind to the name property of the element the template is applied to. |
{TemplateBinding Name} | Shortcut for the previous example. |
Collection Current Item Binding |
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{Binding /} | Bind to the current item in the DataContext (when DataContext is a collection) |
{Binding AllItems/} | Bind to the current item in the "AllItems" property of the DataContext |
{Binding AllItems/Name} | Bind to the "Name" property of the current item in the "AllItems" property of the DataContext |
Alphabetical list of all Binding's properties
Property |
Description |
BindingGroupName (3.5sp1) | The name of the BindingGroup to which this binding belongs. A BindingGroup is used to validate multiple bindings together (for example when multiple changes should be submitted all at once). |
BindsDirectlyToSource | When using a DataSourceProvider derived class (for example a ObjectDataProvider) setting this property to true will bind to the data source provider object itself, leaving it false will bind to the data contained in the data source. |
Converter | The converter to use, usually you create the converter in a parent element's Resources element and reference it using a {StaticResource name) or create the converter as a static field and reference it with {x:Static ns:class.field} |
ConverterCulture | The culture passed to the converter. |
ConverterParameter | The parameter passed to the converter |
ElementName | Element name, when binding to an element in the same XAML scope. Can't be used if RelativeSource or Source is set. |
FallbackValue | Value to use when the Binding encounters an error |
IsAsync | Use when the property's get accessor takes a long time, to avoid blocking the UI thread, While waiting for the value to arrive, the binding reports the FallbackValue. |
Mode | Direction of binding, possible options:
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NotifyOnSourceUpdated | Raise the SourceUpdated event when a value is transferred from the binding target to the binding source. |
NotifyOnTargetUpdated | Raise the TargetUpdated event when a value is transferred from the binding source to the binding target. |
NotifyOnValidationError | Raise the Error attached event on the bound object. |
Path | Source property. |
RelativeSource | Binding source relative to the target, possible options:
|
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:
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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 |
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