1、一個TextBox顯示另一個TextBox文字的第4個字元

            <TextBox x:Name="tb1"/>
            <!--tb2繫結：單向繫結 tb1的Text屬性第4個字元-->
            <TextBox x:Name="tb2" Text="{Binding Path=Text.[3],ElementName=tb1,Mode=OneWay}"/>

2、ComboBox 繫結List

    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            this.DataContext = new Window1Model();
        }
    }

    public class Window1Model
    {
        public List<string> list{get;set;}
        public Window1Model()
        { 
            list = new List<string> { "1", "2", "3" };
        }
    }
 

<ComboBox x:Name="a" ItemsSource="{Binding list}" SelectedIndex="0"/>

3、ComboBox 繫結 資源字典

建立資源字典 TreeFile.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:s="clr-namespace:System;assembly=mscorlib"
                    >
    <x:ArrayExtension x:Key="TermTypeList" Type="{x:Type s:String}">
        <s:String>A</s:String>
        <s:String>B</s:String>
        <s:String>C</s:String>
    </x:ArrayExtension>
</ResourceDictionary> 
 

App.xaml

<Application x:Class="AutomaticConfigurationAPP.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Resources/Xml/TreeFile.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>
 

<ComboBox ItemsSource="{Binding Source={StaticResource TermTypeList}}"/>

4、ComboBox 繫結 XML

<?xml version="1.0" encoding="utf-8" ?>
<Data xmlns="">
  <Grade Name="一年級"/>
  <Grade Name="二年級"/>
</Data>

    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            this.DataContext = new Window1Model();
        }
    }

    public class Window1Model
    {
        public IEnumerable<string> list { get; set; }
        public Window1Model()
        {

            XDocument xdoc = XDocument.Load(Environment.CurrentDirectory + "\\XMLFile1.xml");
            list = from element in xdoc.Descendants("Grade")
                   select element.Attribute("Name").Value.ToString();
        }
    }

<ComboBox ItemsSource="{Binding list}"/>

5、List集合Add後,view層沒發生變化。

使用動態集合 ObservableCollection

        private ObservableCollection<VariableModel> listvariable;
        public ObservableCollection<VariableModel> ListVariable
        {
            get { return listvariable; }
            set
            {
                listvariable = value;
                NotifyPropertyChanged("ListVariable");
            }
        }

6、點選滑鼠左鍵，命令不執行，使用相對資料來源，找到命令

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

                <TextBlock x:Name="a" Text="{Binding Name}">
                              <i:Interaction.Triggers>
                                <i:EventTrigger EventName="MouseLeftButtonDown">
                                    <i:InvokeCommandAction Command="{Binding (DataContext).TreeSelectCommand,
                        RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=Page}}" CommandParameter="{Binding Name}"/>
                                </i:EventTrigger>
                            </i:Interaction.Triggers>
                </TextBlock>