WPF笔记

<Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
</Grid>

<Grid Margin="10">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="80" />
            <ColumnDefinition Width="4" /><!-- 这是“提交”和“清除”两个按钮之间的空隙 -->
            <ColumnDefinition Width="80" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="25" />
            <RowDefinition Height="4" /><!-- 这是ComboBox与textbox之间的空隙 -->
            <RowDefinition Height="*" />
            <RowDefinition Height="4" /><!-- 这是textbox与按钮之间的空隙 -->
            <RowDefinition Height="25" />
        </Grid.RowDefinitions>
        <TextBlock Text="选择部门并留言：" Grid.Column="0" Grid.Row="0" VerticalAlignment="Center" />
        <ComboBox Grid.Column="1" Grid.Row="0" Grid.ColumnSpan="4" />
        <TextBox Grid.Column="0" Grid.Row="2" Grid.ColumnSpan="5" />
        <Button Content="提交" Grid.Column="2" Grid.Row="4" />
        <Button Content="清除" Grid.Column="4" Grid.Row="4" />
    </Grid>

<Grid>
        <GroupBox Header="请选择没错别字的的成语" BorderBrush="Black" Margin="5">
            <StackPanel Margin="5">
                <CheckBox Content="A.迫不及待" />
                <CheckBox Content="B.妙不可言" />
                <CheckBox Content="C.唉声叹气" />
                <CheckBox Content="D.陈词滥调" />
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                    <Button Content="确定" Width="60" Margin="5" />
                    <Button Content="取消" Width="60" Margin="5" />
                </StackPanel>
            </StackPanel>
        </GroupBox>
    </Grid>

<Canvas>
        <TextBlock Text="用户名：" Canvas.Left="12" Canvas.Top="12" />
        <TextBox Height="23" Width="200" BorderBrush="Black" Canvas.Left="66" Canvas.Top="9" />
        <TextBlock Text="密码：" Canvas.Left="12" Canvas.Top="40.72" Height="16" Width="36" />
        <TextBox Height="23" Width="200" BorderBrush="Black" Canvas.Left="66" Canvas.Top="38" />
        <Button Content="确定" Width="80" Height="22" Canvas.Left="100" Canvas.Top="67" />
        <Button Content="清除" Width="80" Height="22" Canvas.Left="186" Canvas.Top="67" />
    </Canvas>

<Grid>
        <DockPanel>
            <TextBox DockPanel.Dock="Top" Height="50" BorderBrush="Blue" />
            <TextBox DockPanel.Dock="Left" Width="150" BorderBrush="BlueViolet" />
            <TextBox BorderBrush="Aqua"/>
        </DockPanel>
    </Grid>

<WrapPanel>
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
        <Button Width="200" Height="200" Content="OK" />
    </WrapPanel>

<TextBox x:Name="textbox1" Background="Aqua" Text="{Binding Path=Value,ElementName=Slider1}" />
<Slider x:Name="Slider1" Maximum="100" Minimum="0" />
<TextBox x:Name="textbox2" Background="Aquamarine" Text="{Binding Path=Text.Length,ElementName=textbox1,Mode=OneWay}" />//Mode为控制流方向

Binding binding = new Binding(){Path = new PropertyPath("Value"), Source = Slider1};
BindingOperations.SetBinding(textbox3, TextBox.TextProperty, binding);

<TextBox x:Name="textbox3" Text="{Binding Path=Value,ElementName=Slider1}" />

this.textbox3.SetBinding(TextBox.TextProperty, new Binding("Value"){ElementName = "Slider1"});

<TextBlock x:Name="textBlock1" Background="Aquamarine" Text="{Binding Path=Value,ElementName=Slider1}" Margin="5" />//Value代表Slider目前的值
<Slider x:Name="Slider1" />
<TextBlock x:Name="textBlock2" Background="Aqua" Margin="5" />

Binding binding = new Binding { Path = new PropertyPath("Value"), Source = Slider1, };
textBlock2.SetBinding(TextBlock.TextProperty, binding);

textBlock2.SetBinding(TextBlock.TextProperty, new Binding("Value") { Source = Slider1, });

<StackPanel.Resources>
    <system:String x:Key="myString">
        菩提本无树，明镜亦非台。
        本来无一物，何处惹尘埃。
    </system:String>
</StackPanel.Resources>
<TextBlock x:Name="textBlock3" Background="Bisque" Margin="5" Text="{Binding Path=.,Source={StaticResource ResourceKey=myString}}" />

string myString = "菩提本无树，明镜亦非台。本来无一物，何处惹尘埃。";
textBlock3.SetBinding(TextBlock.TextProperty, new Binding(".") {Source = myString});

public class Student
    {
        public string Name { get; set; }
        public int    Id   { get; set; }
        public string Sex  { get; set; }
    }

<Window x:Class="TestWPF.Test"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:TestWPF"//需要引入类所在命名空间
        mc:Ignorable="d"
        Title="Test" Height="450" Width="800">
    <StackPanel>
        <StackPanel.DataContext>
            <local:Student Id="10" Name="Mike" Sex="男" />
        </StackPanel.DataContext>
        <Grid>
            <StackPanel>
                <TextBlock x:Name="textBlock4" Background="Chocolate" Margin="5" Text="{Binding Path=Id}" />
                <TextBlock x:Name="textBlock5" Background="Teal" Margin="5" Text="{Binding Path=Name}" />
                <TextBlock x:Name="textBlock6" Background="DeepSkyBlue" Margin="5" Text="{Binding Path=Sex}" />
            </StackPanel>
        </Grid>
    </StackPanel>
</Window>

<StackPanel.DataContext>
    <local:Student Id="10" Name="Mike" Sex="男" />
</StackPanel.DataContext>

<Window x:Class="TestWPF.Test"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:system="clr-namespace:System;assembly=mscorlib"//指定String类型所需
        mc:Ignorable="d"
        Title="Test" Height="450" Width="800">
    <StackPanel>
        <StackPanel.DataContext>
            <system:String>Hello Worldl!</system:String>
        </StackPanel.DataContext>
        <Grid>
            <StackPanel>
                <TextBlock Background="Aqua" Margin="5" Text="{Binding}" />
            </StackPanel>
        </Grid>
    </StackPanel>
</Window>

<StackPanel x:Name="StackPanel" Background="LightBlue">
        <TextBlock Text="Student ID:" FontWeight="Bold" Margin="5" />
        <TextBox x:Name="TextBoxID" Margin="5" />
        <TextBlock Text="Student List:" FontWeight="Bold" Margin="5" />
        <ListBox x:Name="ListBoxStudents" Height="110" Margin="5">
</StackPanel>

public Test()
        {
            InitializeComponent();
            List<Student> stuList = new List<Student>
            {
                new Student { Id = 5, Name  = "Amy", Sex   = "女", },
                new Student { Id = 8, Name  = "John", Sex  = "男", },
                new Student { Id = 15, Name = "Mike", Sex  = "男", },
                new Student { Id = 29, Name = "Sarah", Sex = "女", },
            };

            //为ListBox设置Binding
            ListBoxStudents.ItemsSource       = stuList;
            ListBoxStudents.DisplayMemberPath = "Name";

            //为TextBox设置Binding
            Binding binding = new Binding("SelectedItem.Id") { Source = ListBoxStudents };
            TextBoxID.SetBinding(TextBox.TextProperty, binding);
        }

<Window x:Class="TestWPF.Test"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="Test" Height="450" Width="800">
    <StackPanel x:Name="StackPanel" Background="LightBlue">
        <TextBlock Text="Student ID:" FontWeight="Bold" Margin="5" />
        <TextBox x:Name="TextBoxID" Margin="5" />
        <TextBlock Text="Student List:" FontWeight="Bold" Margin="5" />
        <ListBox x:Name="ListBoxStudents" Height="110" Margin="5">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <TextBlock Text="{Binding Path=Id}" Width="30" />
                        <TextBlock Text="{Binding Path=Name}" Width="30" />
                        <TextBlock Text="{Binding Path=Sex}" Width="30" />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </StackPanel>
</Window>

<?xml version="1.0" encoding="utf-8" ?>
<StudentList>
  <Student Id ="1">
    <Name>Tom</Name>
  </Student>
  <Student Id ="2">
    <Name>Jack</Name>
  </Student>
  <Student Id ="3">
    <Name>Joe</Name>
  </Student>
</StudentList>

<StackPanel>
<ListView x:Name="ListViewStudents" Height="130" Margin="5">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Id" Width="80" DisplayMemberBinding="{Binding XPath=@Id}" />
                    <GridViewColumn Header="Name" Width="120" DisplayMemberBinding="{Binding XPath=Name}" />
                </GridView>
            </ListView.View>
        </ListView>
        <Button Content="Load" Click="ButtonBase_OnClick" Height="25" Margin="5,0" />
</StackPanel>

private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
        {
            XmlDataProvider xdp = new XmlDataProvider();
            xdp.Source   = new Uri(@"D:\Students.xml");//Source可直接指定XML文档所在的位置
            xdp.XPath    = @"/StudentList/Student";

            ListViewStudents.DataContext = xdp;
            ListViewStudents.SetBinding(ListView.ItemsSourceProperty, new Binding());
        }

<StackPanel>
<ListView x:Name="ListViewStudents1" Height="143" Margin="5">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Id" Width="60" DisplayMemberBinding="{Binding Id}" />
                    <GridViewColumn Header="Name" Width="100" DisplayMemberBinding="{Binding Name}" />
                    <GridViewColumn Header="Sex" Width="60" DisplayMemberBinding="{Binding Sex}" />
                </GridView>
            </ListView.View>
        </ListView>
        <Button x:Name="btn1" Content="Load" Height="25" Margin="5,0" Click="btn1_Click"></Button>
</StackPanel>

ListViewStudents1.ItemsSource = from student in stuList where student.Sex.Equals("女") select student;

<StackPanel>
    <TextBox x:Name="textBox1" Margin="5" />
    <Slider x:Name="slider1" Minimum="-10" Maximum="110" Margin="5" />
</StackPanel>

public class RangeValidationRule : ValidationRule
    {
        //需要实现Validate方法
        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            double d = 0;
            if (double.TryParse(value.ToString(), out d))
            {
                if (d >= 0 && d <= 100)
                {
                    return new ValidationResult(true, null);
                }
            }

            return new ValidationResult(false, "Validation Failed");
        }
    }

public MainWindow()
        {
            InitializeComponent();
 
            Binding binding = new Binding("Value") { Source = this.slider1 };
            binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
            RangeValidationRule rule = new RangeValidationRule();
            binding.ValidationRules.Add(rule);
            this.textBox1.SetBinding(TextBox.TextProperty, binding);
        }

public MainWindow()
        {
            InitializeComponent();
 
            Binding binding = new Binding("Value") { Source = this.slider1 };
            binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
            RangeValidationRule rule = new RangeValidationRule();
            rule.ValidatesOnTargetUpdated = true;在此
            binding.ValidationRules.Add(rule);
            this.textBox1.SetBinding(TextBox.TextProperty, binding);
        }

public MainWindow()
        {
            InitializeComponent();
 
            Binding binding = new Binding("Value") { Source = this.slider1 };
            binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
            RangeValidationRule rule = new RangeValidationRule();
            rule.ValidatesOnTargetUpdated = true;
            binding.ValidationRules.Add(rule);
 
            //校验失败发出信号
            binding.NotifyOnValidationError = true;
            this.textBox1.SetBinding(TextBox.TextProperty, binding);
 
            //关联事件处理器
            this.textBox1.AddHandler(Validation.ErrorEvent,new RoutedEventHandler(this.ValidationError));
        }

         //事件处理器
        void ValidationError(object sender, RoutedEventArgs e)
        {
            if (Validation.GetErrors(this.textBox1).Count > 0)
            {
                this.textBox1.ToolTip = Validation.GetErrors(this.textBox1)[0].ErrorContent.ToString();
            }
        }

public class StringToBoolConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
                return false;
 
            if (value is string&&
                string.IsNullOrEmpty((string)value)==false)
            {
                return true;
            }
            return false;
        }
 
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

<Window x:Class="_6_34.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:_6_34"//命名空间
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <local:StringToBoolConverter x:Key="s2b"/>
    </Window.Resources>
        <Grid>
        <TextBox Height="23" HorizontalAlignment="Left" Margin="160,82,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" 
                 />
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="180,178,0,0" Name="button1" VerticalAlignment="Top" Width="75" 
                IsEnabled="{Binding Text,Converter={StaticResource s2b},ElementName=textBox1}"/>
    </Grid>
</Window>

<Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="192,191,0,0" Name="button1" VerticalAlignment="Top" Width="75" />
<TextBox Height="23" HorizontalAlignment="Left" Margin="169,75,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" />
<TextBox Height="23" HorizontalAlignment="Left" Margin="169,122,0,0" Name="textBox2" VerticalAlignment="Top" Width="120" />

public class MultiBindingConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if(values.Cast<string>().Any(text=>string.IsNullOrEmpty(text))==false
                && values[0].ToString() == values[1].ToString())
            {
                return true;
            }
            return false;
        }
 
        public object[] ConvertBack(object value, Type[] targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

public MainWindow()
        {
            InitializeComponent();
 
            //准备binding
            Binding b1 = new Binding("Text") { Source = this.textBox1 };
            Binding b2 = new Binding("Text") { Source = this.textBox2 };
            //准备多路binding
            MultiBinding mb = new MultiBinding() { Mode=BindingMode.OneWay };
            mb.Bindings.Add(b1);
            mb.Bindings.Add(b2);
 
            MultiBindingConverter mbc=new MultiBindingConverter();
            mb.Converter = mbc;
 
            //设置关联
            this.button1.SetBinding(Button.IsEnabledProperty, mb);
        }