WPF-将.NET对象属性绑定到窗口属性

Question

I have a defined class

namespace testApp.ViewsModels
{
 public class myWindowSettings
 {
  public int myWindowHeight { get; set; }
  public String myWindowTitle { get; set; }
  public myWindowSettings()
   {
    myWindowTitle ="My Name Here";
    myWindowHeight =211;
   }
 }
}

And use it as my View Model. Within the Window tag of the .xaml I have declared:

xmlns:viewModels="clr-namespace: testApp.ViewsModels"

Within the Windows.Resources I have defined an ObjectDataProvider

<ObjectDataProvider x:key="myWindowSetting" ObjectType={x:Type viewModels:myWindowSettings}" />

And I can use it to bind to a textBlock Text property

<TextBlock x:Name="textBloxk" Text="{Binding Path=myWindowTitle, Source={StaticResource myWindowSetting}, Mode=OneTime}" />

But when I try to bind it to a window property

Title="{Binding Path=myWindowTitle, Source={StaticResource myWindowSetting}, Mode=OneTime}"

I got an exception. Exception thrown:

'System.Windows.Markup.XamlParseException' in PresentationFramework.dll.Additional information: 'Provide value on 'System.Windows.StaticResourceExtension' threw an exception.' 

Line number ... and line position '9'.

How can I bind an object of type myWindowSettings to the Window?

Answer 1

Try setting the DataContext of the Window to myWindowSetting , by using the answer to the following question:

WPF Bind Window Title to ViewModel Property

Maybe this will work. I think the problem is that the upper code initializes the window before knowing the Resource myWindowSettings . It could also work if you place the ObjectDataProvider object somewhere else. But for this more of your code would be necessary.

Answer 2

Use following code to bond data-context

<Window.DataContext>
    <viewModels:myWindowSettings x:Name="myWindowSetting" />
</Window.DataContext>

Bind title property as below:

Title="{Binding Path = myWindowTitle, Mode=OneTime}"