DXBinding

• May 05, 2018

Binding Tools

The DevExpress Binding mechanism includes three powerful tools that extend standard WPF bindings.

• The DXBinding allows you to use expressions inside binding paths.

  XAML

  IsEnabled="{DXBinding '!HasError'}"
  IsEnabled="{DXBinding 'GetHasError(Text)'}"
  Margin="{DXBinding 'new $Thickness(LeftIndent, 0, 0, 0)'}"
  

• With the DXCommand, you can bind a command property and define methods to call right in xaml.

  XAML

  <Button Command="{DXCommand 'SaveDocument(DocumentName); CloseDocument(DocumentName)'}"/>
  <Button Command="{DXCommand '@e(checkBox).IsChecked=true'}"/>
  

• The DXEvent allows you to bind an event to methods.

  XAML

  <Window Loaded="{DXEvent InitializeViewModel()}"/>
  <Button Click="{DXEvent '@e(checkBox).IsChecked=true'}"/>
  

The Language Specification topic describes the language that is used in the DevExpress binding mechanism.

Declarative Template Selector

The DXDataTemplateSelector is a declarative way to implement DataTemplateSelector.

The DXDataTemplateSelector allows you to define a simple template selection logic in XAML, so you do not need to create a DataTemplateSelector ancestor in code-behind. The DXDataTemplateSelector works like WPF triggers.