MethodToCommandBehavior Class
Binds a method of a ViewModel or control to a Command property of a control on a View.
Namespace: DevExpress.Mvvm.UI
Assembly: DevExpress.Xpf.Core.v23.2.dll
NuGet Package: DevExpress.Wpf.Core
Declaration
Remarks
Specify the following MethodToCommandBehavior properties to bind a ViewModel (or a control) method to a Command property of a control in a View:
- Target
- An object whose Command property should be bound to a Method. The default target object is the behavior’s associated object. This is a dependency property.
- Command
- Gets or sets a Target object’s command property name that should be bound to the specified Method. This is a dependency property.
- Source
- Gets or sets an object whose method should be executed. This is a dependency property.
- Method
- Gets or sets the name of a Source object’s method that should be invoked. This is a dependency property.
- CanExecuteFunction (Optional)
- Gets or sets the name of a function that determines whether the Method can be executed. This is a dependency property.
- Arg* Properties (Optional)
Properties that the behavior should pass to the Method as arguments. You can specify no more than 15 arguments.
The MethodToCommandBehavior converts the specified arguments to the parameterized type, if possible.
The following code sample binds the GridControl‘s SortBy method to the BarButtonItem and passes the GridControl‘s CurrentColumn and Descending sort order properties:
<UserControl ...
xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars"
xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid"
xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm">
<Grid>
<dxb:BarManager>
<dxb:BarManager.Bars>
<dxb:Bar Caption="Column Sorting Bar">
<dxb:BarButtonItem
Content="Descending"
Glyph="{dx:DXImage Image=MoveDown_16x16.png}"
BarItemDisplayMode="ContentAndGlyph">
<dxmvvm:Interaction.Behaviors>
<dxmvvm:MethodToCommandBehavior
Source="{Binding ElementName=gridControl}"
Method="SortBy"
Arg1="{Binding ElementName=gridControl,Path=CurrentColumn}"
Arg2="Descending"/>
</dxmvvm:Interaction.Behaviors>
</dxb:BarButtonItem>
</dxb:Bar>
</dxb:BarManager.Bars>
<Grid>
<dxg:GridControl x:Name="gridControl" ...>
<dxg:GridControl.View>
<dxg:TableView x:Name="tableView" ... />
</dxg:GridControl.View>
</dxg:GridControl>
</Grid>
</dxb:BarManager>
</Grid>
</UserControl>