WPF笔记 ( xmlns引用，Resource、Binding 前/后台加载,重新绑定) 2013.6.7更新

1、xmlns

clr-namespace:<clr namespace>[;assembly=<assembly name>]

xmlns:converter="clr-namespace:Pansoft.SCV.Workflows.OpenAccount.ValueConverter"

（2）如果自定义类和XAML处在不同的Assembly之中。除了clr-namespace值外，还必须提供assembly的值。

xmlns:converter="clr-namespace:Pansoft.SCV.UIFramework.ValueConverter;assembly=Pansoft.SCV.UIFramework"

clr-namespace和assembly的拼写必须都是小写。

这样在XAML中就可以通过namespace prefix和类名使用自定义的元素了。举例： 

<converter:ImageSourceConverter x:Key="ImageConverter"/>

2、Resource

前台：

<Page.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Pansoft.SCV.UIFramework;component/Style/GlobaStyle.xaml"/>
            </ResourceDictionary.MergedDictionaries>
            <converter:ImageSourceConverter x:Key="ImageConverter"/>
            <Style TargetType="{x:Type TextBox}">
            </Style>
        </ResourceDictionary>
 </Page.Resources>

            Resources.MergedDictionaries.Add(new ResourceDictionary()
            {
                Source = new Uri("../Pansoft.SCV.Workflows.OpenAccount;component/Style/GlobaStyle.xaml", UriKind.Relative)
            });

Resources.MergedDictionaries.Add(new ResourceDictionary()
            {
                Source = new Uri("pack://application:,,,/Pansoft.SCV.Workflows.OpenAccount;component/Style/GlobaStyle.xaml")
            });

3、Binding 

前台：

<trans:OpenAccountTranscation x:Key="WorkflowNode"/>

或者

Resources.Add("WorkflowNode", node.Owner.Transcation);

调用：

<Page.DataContext>
      <Binding Source="{StaticResource WorkflowNode}"/>
</Page.DataContext>

<TextBlock Text="{Binding Name}"  FontSize="18" Margin="20,0"/>

或者直接写：

DataContext = node.Owner.Transcation;

后台：

            Binding MyBinding = new Binding();
            MyBinding.Path = new PropertyPath("Name"); 
            MyBinding.Mode = BindingMode.OneWay;
            MyBinding.Source = node.Owner.Transcation;
            MyTextBlock.DataContext = node.Owner.Transcation;
            MyTextBlock.SetBinding(TextBlock.TextProperty, MyBinding);  

4、后台重新绑定

xaml：

 <Button x:Name="BtnSwitchLangs" Content="{DynamicResource Execute}" Width="200" Height="60" Click="Button_Click_2" Margin="0,5"/>

BtnSwitchLangs.SetResourceReference(ContentProperty, "ReExecute");//为内容绑定新的源