一．前言.预览
申明：WPF自定义控件与样式是一个系列文章，前后是有些关联的，但大多是按照由简到繁的顺序逐步发布的等。
本文主要是对文本输入控件进行样式开发，及相关扩展功能开发，主要内容包括：
基本文本框TextBox控件样式及扩展功能，实现了样式、水印、Label标签、功能扩展；富文本框RichTextBox控件样式；密码输入框PasswordBox控件样式及扩展功能；
效果图：
二．基本文本框TextBox控件样式及扩展功能
2.1 TextBox基本样式
样式代码如下：
<!--TextBox默认样式--><Style TargetType="{x:Type TextBox}" x:Key="DefaultTextBox"><Setter Property="ContextMenu" Value="{DynamicResource TextBoxContextMenu}" /><Setter Property="SelectionBrush" Value="{StaticResource TextSelectionBrush}" /><Setter Property="FontFamily" Value="{StaticResource FontFamily}" /><Setter Property="FontSize" Value="{StaticResource FontSize}" /><Setter Property="BorderThickness" Value="1" /><Setter Property="MinHeight" Value="26" /><Setter Property="Width" Value="100" /><Setter Property="Background" Value="{StaticResource TextBackground}" /><Setter Property="Foreground" Value="{StaticResource TextForeground}" /><Setter Property="Padding" Value="0" /><Setter Property="BorderBrush" Value="{StaticResource ControlBorderBrush}" /><Setter Property="local:ControlAttachProperty.FocusBorderBrush" Value="{StaticResource FocusBorderBrush}" /><Setter Property="local:ControlAttachProperty.MouseOverBorderBrush" Value="{StaticResource MouseOverBorderBrush}" /><Setter Property="VerticalContentAlignment" Value="Center" /><!-- change SnapsToDevicePixels to True to view a better border and validation error --><Setter Property="SnapsToDevicePixels" Value="True" /><!--英 ['kærət] 美 ['kærət] 插入符号--><Setter Property="CaretBrush" Value="{StaticResource TextForeground}" /><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type TextBox}"><Grid x:Name="PART_Root"><Border x:Name="Bg" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"CornerRadius="{TemplateBinding local:ControlAttachProperty.CornerRadius}"BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" /><Grid x:Name="PART_InnerGrid"><Grid.ColumnDefinitions><ColumnDefinition Width="Auto" /><ColumnDefinition Width="*" /><ColumnDefinition Width="Auto" /></Grid.ColumnDefinitions><!--Label区域--><ContentControl x:Name="Label" Margin="1" Template="{TemplateBinding local:ControlAttachProperty.LabelTemplate}"Content="{TemplateBinding local:ControlAttachProperty.Label}"/><!--内容区域--><ScrollViewer x:Name="PART_ContentHost" BorderThickness="0" Grid.Column="1" IsTabStop="False" Margin="2"VerticalAlignment="Stretch" Background="{x:Null}" /><!--水印--><TextBlock x:Name="Message" Padding="{TemplateBinding Padding}" Visibility="Collapsed"Text="{TemplateBinding local:ControlAttachProperty.Watermark}" Grid.Column="1"Foreground="{TemplateBinding Foreground}" IsHitTestVisible="False" Opacity="{StaticResource WatermarkOpacity}"HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="5,2,5,2" /><!--附加内容区域--><Border x:Name="PART_AttachContent" Grid.Column="2" Margin="2" VerticalAlignment="Center" HorizontalAlignment="Center" ><ContentControl VerticalAlignment="Center" VerticalContentAlignment="Center" Template="{TemplateBinding local:ControlAttachProperty.AttachContent}" /></Border></Grid></Grid><ControlTemplate.Triggers><!--显示水印--><DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Text}" Value=""><Setter TargetName="Message" Property="Visibility" Value="Visible" /></DataTrigger><Trigger Property="IsMouseOver" Value="True"><Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.MouseOverBorderBrush),RelativeSource={RelativeSource Self}}"/></Trigger><Trigger Property="IsFocused" Value="True"><Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.FocusBorderBrush),RelativeSource={RelativeSource Self}}"/></Trigger><!--不可用--><Trigger Property="IsEnabled" Value="False"><Setter TargetName="PART_Root" Property="Opacity" Value="{StaticResource DisableOpacity}" /></Trigger><!--只读时，禁用PART_AttachContent--><Trigger Property="IsReadOnly" Value="True"><Setter TargetName="PART_AttachContent" Property="IsEnabled" Value="False" /><Setter TargetName="Bg" Property="Opacity" Value="{StaticResource ReadonlyOpacity}" /><Setter TargetName="PART_ContentHost" Property="Opacity" Value="{StaticResource ReadonlyOpacity}" /><Setter TargetName="Label" Property="Opacity" Value="{StaticResource ReadonlyOpacity}" /></Trigger></ControlTemplate.Triggers></ControlTemplate></Setter.Value></Setter></Style>
模板内容主要包含四部分：
用于实现Label标签的预留区域；TextBox本身的文本输入显示部分；水印显示部分；功能扩展的预留区域；
其中Label标签、功能扩展，还有输入框的不同状态显示效果都是通过附加属性来实现的，其实从本质上附加属性和控件上定义的依赖属性是同一个概念，有些时候附加属性会更加方便，对于一些可共用的属性，就比较方便，这一点怎本文是有体现的。上面代码使用到的附加属性代码：
#region FocusBorderBrush 焦点边框色，输入控件public static readonly DependencyProperty FocusBorderBrushProperty = DependencyProperty.RegisterAttached("FocusBorderBrush", typeof(Brush), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null));public static void SetFocusBorderBrush(DependencyObject element, Brush value){element.SetValue(FocusBorderBrushProperty, value);}public static Brush GetFocusBorderBrush(DependencyObject element){return (Brush)element.GetValue(FocusBorderBrushProperty);}#endregion#region MouseOverBorderBrush 鼠标进入边框色，输入控件public static readonly DependencyProperty MouseOverBorderBrushProperty =DependencyProperty.RegisterAttached("MouseOverBorderBrush", typeof(Brush), typeof(ControlAttachProperty),new FrameworkPropertyMetadata(Brushes.Transparent,FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.Inherits));/// <summary>/// Sets the brush used to draw the mouse over brush./// </summary>public static void SetMouseOverBorderBrush(DependencyObject obj, Brush value){obj.SetValue(MouseOverBorderBrushProperty, value);}/// <summary>/// Gets the brush used to draw the mouse over brush./// </summary>[AttachedPropertyBrowsableForType(typeof(TextBox))][AttachedPropertyBrowsableForType(typeof(CheckBox))][AttachedPropertyBrowsableForType(typeof(RadioButton))][AttachedPropertyBrowsableForType(typeof(DatePicker))][AttachedPropertyBrowsableForType(typeof(ComboBox))][AttachedPropertyBrowsableForType(typeof(RichTextBox))]public static Brush GetMouseOverBorderBrush(DependencyObject obj){return (Brush)obj.GetValue(MouseOverBorderBrushProperty);}#endregion#region AttachContentProperty 附加组件模板/// <summary>/// 附加组件模板/// </summary>public static readonly DependencyProperty AttachContentProperty = DependencyProperty.RegisterAttached("AttachContent", typeof(ControlTemplate), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null));public static ControlTemplate GetAttachContent(DependencyObject d){return (ControlTemplate)d.GetValue(AttachContentProperty);}public static void SetAttachContent(DependencyObject obj, ControlTemplate value){obj.SetValue(AttachContentProperty, value);}#endregion#region WatermarkProperty 水印/// <summary>/// 水印/// </summary>public static readonly DependencyProperty WatermarkProperty = DependencyProperty.RegisterAttached("Watermark", typeof(string), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(""));public static string GetWatermark(DependencyObject d){return (string)d.GetValue(WatermarkProperty);}public static void SetWatermark(DependencyObject obj, string value){obj.SetValue(WatermarkProperty, value);}#endregion#region CornerRadiusProperty Border圆角/// <summary>/// Border圆角/// </summary>public static readonly DependencyProperty CornerRadiusProperty = DependencyProperty.RegisterAttached("CornerRadius", typeof(CornerRadius), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null));public static CornerRadius GetCornerRadius(DependencyObject d){return (CornerRadius)d.GetValue(CornerRadiusProperty);}public static void SetCornerRadius(DependencyObject obj, CornerRadius value){obj.SetValue(CornerRadiusProperty, value);}#endregion#region LabelProperty TextBox的头部Label/// <summary>/// TextBox的头部Label/// </summary>public static readonly DependencyProperty LabelProperty = DependencyProperty.RegisterAttached("Label", typeof(string), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null));[AttachedPropertyBrowsableForType(typeof(TextBox))]public static string GetLabel(DependencyObject d){return (string)d.GetValue(LabelProperty);}public static void SetLabel(DependencyObject obj, string value){obj.SetValue(LabelProperty, value);}#endregion#region LabelTemplateProperty TextBox的头部Label模板/// <summary>/// TextBox的头部Label模板/// </summary>public static readonly DependencyProperty LabelTemplateProperty = DependencyProperty.RegisterAttached("LabelTemplate", typeof(ControlTemplate), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null));[AttachedPropertyBrowsableForType(typeof(TextBox))]public static ControlTemplate GetLabelTemplate(DependencyObject d){return (ControlTemplate)d.GetValue(LabelTemplateProperty);}public static void SetLabelTemplate(DependencyObject obj, ControlTemplate value){obj.SetValue(LabelTemplateProperty, value);}#endregion
2.2 水印效果实现
通过2.1的代码示例，可以看出，水印是内置了一个TextBlock，用附加属性ControlAttachProperty.Watermark设置水印内容，在触发器中检测，当TextBox中有输入值，则隐藏水印的TextBlock，使用示例：
<StackPanel><TextBox Width="140" Height="40" Margin="3" TextWrapping="Wrap" VerticalScrollBarVisibility="Visible">333333333333333</TextBox><TextBox Width="150" Height="30" Margin="3" core:ControlAttachProperty.Watermark="我是水印" core:ControlAttachProperty.CornerRadius="2"></TextBox><TextBox Width="150" Height="30" Margin="3" IsReadOnly="True" core:ControlAttachProperty.CornerRadius="15" SnapsToDevicePixels="True" >我是只读的</TextBox><TextBox Width="150" Height="30" Margin="3" IsEnabled="False">IsEnabled="False"</TextBox><TextBox Width="150" Height="30" core:ControlAttachProperty.Watermark="我是水印"></TextBox></StackPanel>
效果：
2.3 Label标签实现
参考2.1的代码，预留了Label的区域，通过设置附加属性local:ControlAttachProperty.Label设置标签文本，local:ControlAttachProperty.LabelTemplate设置Label标签的模板样式，即可自定义实现Label标签，自定义样式：
<!--TextBox包含附加属性Label的样式--><Style TargetType="{x:Type TextBox}" x:Key="LabelTextBox" BasedOn="{StaticResource DefaultTextBox}"><Setter Property="local:ControlAttachProperty.LabelTemplate" ><Setter.Value><ControlTemplate TargetType="ContentControl"><Border Width="60" Background="{StaticResource TextLabelBackground}"><TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock></Border></ControlTemplate></Setter.Value></Setter></Style>
使用示例及效果：
<TextBox Width="200" Height="30" Margin="3" core:ControlAttachProperty.Watermark="请输入姓名" Style="{StaticResource LabelTextBox}" core:ControlAttachProperty.Label="姓名："></TextBox>
2.4 扩展功能及自定义扩展
思路和2.3的Label标签实现相似，清除文本框内的内容是一个常用需求，我们就线扩展一个这么一个功能的TextBox，通过附加属性ControlAttachProperty.AttachContent定义扩展功能的模板，模板内定义的是一个按钮FButton（可参考上一篇，本文末尾附录中有链接）
<!--TextBox包含清除Text按钮的样式--><Style TargetType="{x:Type TextBox}" x:Key="ClearButtonTextBox" BasedOn="{StaticResource DefaultTextBox}"><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"Margin="1,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style>
这里定义的是显示效果，清除TextBox内容的逻辑代码如何实现的呢？还是附加属性：
ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" ：注入事件到当前ButtonCommand="local:ControlAttachProperty.ClearTextCommand"：定义Fbutton的命令对象实例CommandCommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"：把TextBox作为参数传入
逻辑代码如下，从代码不难看出，它是支持多种输入控件的内容清除的，也就是说该扩展功能可以轻松支持其他输入控件，第四节密码数据的清除也是这样使用的。
#region IsClearTextButtonBehaviorEnabledProperty 清除输入框Text值按钮行为开关（设为ture时才会绑定事件）/// <summary>/// 清除输入框Text值按钮行为开关/// </summary>public static readonly DependencyProperty IsClearTextButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsClearTextButtonBehaviorEnabled", typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsClearTextButtonBehaviorEnabledChanged));[AttachedPropertyBrowsableForType(typeof(TextBox))]public static bool GetIsClearTextButtonBehaviorEnabled(DependencyObject d){return (bool)d.GetValue(IsClearTextButtonBehaviorEnabledProperty);}public static void SetIsClearTextButtonBehaviorEnabled(DependencyObject obj, bool value){obj.SetValue(IsClearTextButtonBehaviorEnabledProperty, value);}/// <summary>/// 绑定清除Text操作的按钮事件/// </summary>private static void IsClearTextButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e){var button = d as FButton;if (e.OldValue != e.NewValue && button != null){mandBindings.Add(ClearTextCommandBinding);}}#endregion#region ClearTextCommand 清除输入框Text事件命令/// <summary>/// 清除输入框Text事件命令，需要使用IsClearTextButtonBehaviorEnabledChanged绑定命令/// </summary>public static RoutedUICommand ClearTextCommand { get; private set; }/// <summary>/// ClearTextCommand绑定事件/// </summary>private static readonly CommandBinding ClearTextCommandBinding;/// <summary>/// 清除输入框文本值/// </summary>private static void ClearButtonClick(object sender, ExecutedRoutedEventArgs e){var tbox = e.Parameter as FrameworkElement;if (tbox == null) return;if (tbox is TextBox){((TextBox)tbox).Clear();}if (tbox is PasswordBox){((PasswordBox)tbox).Clear();}if (tbox is ComboBox){var cb = tbox as ComboBox;cb.SelectedItem = null;cb.Text = string.Empty;}if (tbox is MultiComboBox){var cb = tbox as MultiComboBox;cb.SelectedItem = null;cb.UnselectAll();cb.Text = string.Empty;}if (tbox is DatePicker){var dp = tbox as DatePicker;dp.SelectedDate = null;dp.Text = string.Empty;}tbox.Focus();}#endregion/// <summary>/// 静态构造函数/// </summary>static ControlAttachProperty(){//ClearTextCommandClearTextCommand = new RoutedUICommand();ClearTextCommandBinding = new CommandBinding(ClearTextCommand);ClearTextCommandBinding.Executed += ClearButtonClick;//OpenFileCommandOpenFileCommand = new RoutedUICommand();OpenFileCommandBinding = new CommandBinding(OpenFileCommand);OpenFileCommandBinding.Executed += OpenFileButtonClick;//OpenFolderCommandOpenFolderCommand = new RoutedUICommand();OpenFolderCommandBinding = new CommandBinding(OpenFolderCommand);OpenFolderCommandBinding.Executed += OpenFolderButtonClick;SaveFileCommand = new RoutedUICommand();SaveFileCommandBinding = new CommandBinding(SaveFileCommand);SaveFileCommandBinding.Executed += SaveFileButtonClick;}
效果：
当然我们也可以自定义扩展其他功能，如：
<TextBox Width="200" Height="30" Margin="3" core:ControlAttachProperty.Watermark="查询关键词" IsEnabled="True"><core:ControlAttachProperty.AttachContent><ControlTemplate><StackPanel Orientation="Horizontal"><core:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"FIconSize="18" Margin="1,1,2,3" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/><core:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"FIconSize="22" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></StackPanel></ControlTemplate></core:ControlAttachProperty.AttachContent></TextBox>
效果：
由上不难同时实现Label标签和清除文本内容的样式：
<!--TextBox包含附加属性Label，以及ClearText按钮的样式--><Style TargetType="{x:Type TextBox}" x:Key="LabelClearButtonTextBox" BasedOn="{StaticResource DefaultTextBox}"><Setter Property="local:ControlAttachProperty.LabelTemplate" ><Setter.Value><ControlTemplate TargetType="ContentControl"><Border Width="60" Background="{StaticResource TextLabelBackground}"><TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock></Border></ControlTemplate></Setter.Value></Setter><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"Margin="0,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style>
2.6 文件选择输入相关扩展
先看看效果，就明白了。
具体实现原理和上面2.4差不多 ，实现了三个文件、文件夹选择相关的功能扩展，样式代码：
<!--LabelOpenFileTextBox--><Style TargetType="{x:Type TextBox}" x:Key="LabelOpenFileTextBox" BasedOn="{StaticResource LabelClearButtonTextBox}"><Setter Property="local:ControlAttachProperty.Label" Value="文件路径"/><Setter Property="local:ControlAttachProperty.Watermark" Value="选择文件路径"/><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsOpenFileButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.OpenFileCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"Margin="0,1,0,1" FIconSize="22" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style><!--LabelOpenFolderTextBox--><Style TargetType="{x:Type TextBox}" x:Key="LabelOpenFolderTextBox" BasedOn="{StaticResource LabelClearButtonTextBox}"><Setter Property="local:ControlAttachProperty.Label" Value="设置路径"/><Setter Property="local:ControlAttachProperty.Watermark" Value="选择文件夹路径"/><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsOpenFolderButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.OpenFolderCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"Margin="0,1,0,1" FIconSize="22" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style><!--LabelSaveFileTextBox--><Style TargetType="{x:Type TextBox}" x:Key="LabelSaveFileTextBox" BasedOn="{StaticResource LabelClearButtonTextBox}"><Setter Property="local:ControlAttachProperty.Label" Value="保存路径"/><Setter Property="local:ControlAttachProperty.Watermark" Value="选择文件保存路径"/><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsSaveFileButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.SaveFileCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"Margin="0,1,0,1" FIconSize="20" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style>
当然实现原理和2.4一样，都是依赖属性来实现事件的注入和绑定的，所以就不多废话了：
#region IsOpenFileButtonBehaviorEnabledProperty 选择文件命令行为开关/// <summary>/// 选择文件命令行为开关/// </summary>public static readonly DependencyProperty IsOpenFileButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsOpenFileButtonBehaviorEnabled", typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsOpenFileButtonBehaviorEnabledChanged));[AttachedPropertyBrowsableForType(typeof(TextBox))]public static bool GetIsOpenFileButtonBehaviorEnabled(DependencyObject d){return (bool)d.GetValue(IsOpenFileButtonBehaviorEnabledProperty);}public static void SetIsOpenFileButtonBehaviorEnabled(DependencyObject obj, bool value){obj.SetValue(IsOpenFileButtonBehaviorEnabledProperty, value);}private static void IsOpenFileButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e){var button = d as FButton;if (e.OldValue != e.NewValue && button != null){mandBindings.Add(OpenFileCommandBinding);}}#endregion#region IsOpenFolderButtonBehaviorEnabledProperty 选择文件夹命令行为开关/// <summary>/// 选择文件夹命令行为开关/// </summary>public static readonly DependencyProperty IsOpenFolderButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsOpenFolderButtonBehaviorEnabled", typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsOpenFolderButtonBehaviorEnabledChanged));[AttachedPropertyBrowsableForType(typeof(TextBox))]public static bool GetIsOpenFolderButtonBehaviorEnabled(DependencyObject d){return (bool)d.GetValue(IsOpenFolderButtonBehaviorEnabledProperty);}public static void SetIsOpenFolderButtonBehaviorEnabled(DependencyObject obj, bool value){obj.SetValue(IsOpenFolderButtonBehaviorEnabledProperty, value);}private static void IsOpenFolderButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e){var button = d as FButton;if (e.OldValue != e.NewValue && button != null){mandBindings.Add(OpenFolderCommandBinding);}}#endregion#region IsSaveFileButtonBehaviorEnabledProperty 选择文件保存路径及名称/// <summary>/// 选择文件保存路径及名称/// </summary>public static readonly DependencyProperty IsSaveFileButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsSaveFileButtonBehaviorEnabled", typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsSaveFileButtonBehaviorEnabledChanged));[AttachedPropertyBrowsableForType(typeof(TextBox))]public static bool GetIsSaveFileButtonBehaviorEnabled(DependencyObject d){return (bool)d.GetValue(IsSaveFileButtonBehaviorEnabledProperty);}public static void SetIsSaveFileButtonBehaviorEnabled(DependencyObject obj, bool value){obj.SetValue(IsSaveFileButtonBehaviorEnabledProperty, value);}private static void IsSaveFileButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e){var button = d as FButton;if (e.OldValue != e.NewValue && button != null){mandBindings.Add(SaveFileCommandBinding);}}#endregion#region OpenFileCommand 选择文件命令/// <summary>/// 选择文件命令，需要使用IsClearTextButtonBehaviorEnabledChanged绑定命令/// </summary>public static RoutedUICommand OpenFileCommand { get; private set; }/// <summary>/// OpenFileCommand绑定事件/// </summary>private static readonly CommandBinding OpenFileCommandBinding;/// <summary>/// 执行OpenFileCommand/// </summary>private static void OpenFileButtonClick(object sender, ExecutedRoutedEventArgs e){var tbox = e.Parameter as FrameworkElement;var txt = tbox as TextBox;string filter = txt.Tag == null ? "所有文件(*.*)|*.*" : txt.Tag.ToString();if (filter.Contains(".bin")){filter += "|所有文件(*.*)|*.*";}if (txt == null) return;OpenFileDialog fd = new OpenFileDialog();fd.Title = "请选择文件";//“图像文件(*.bmp, *.jpg)|*.bmp;*.jpg|所有文件(*.*)|*.*”fd.Filter = filter;fd.FileName = txt.Text.Trim();if (fd.ShowDialog() == true){txt.Text = fd.FileName;}tbox.Focus();}#endregion#region OpenFolderCommand 选择文件夹命令/// <summary>/// 选择文件夹命令/// </summary>public static RoutedUICommand OpenFolderCommand { get; private set; }/// <summary>/// OpenFolderCommand绑定事件/// </summary>private static readonly CommandBinding OpenFolderCommandBinding;/// <summary>/// 执行OpenFolderCommand/// </summary>private static void OpenFolderButtonClick(object sender, ExecutedRoutedEventArgs e){var tbox = e.Parameter as FrameworkElement;var txt = tbox as TextBox;if (txt == null) return;FolderBrowserDialog fd = new FolderBrowserDialog();fd.Description = "请选择文件路径";fd.SelectedPath = txt.Text.Trim();if (fd.ShowDialog() == DialogResult.OK){txt.Text = fd.SelectedPath;}tbox.Focus();}#endregion#region SaveFileCommand 选择文件保存路径及名称/// <summary>/// 选择文件保存路径及名称/// </summary>public static RoutedUICommand SaveFileCommand { get; private set; }/// <summary>/// SaveFileCommand绑定事件/// </summary>private static readonly CommandBinding SaveFileCommandBinding;/// <summary>/// 执行OpenFileCommand/// </summary>private static void SaveFileButtonClick(object sender, ExecutedRoutedEventArgs e){var tbox = e.Parameter as FrameworkElement;var txt = tbox as TextBox;if (txt == null) return;SaveFileDialog fd = new SaveFileDialog();fd.Title = "文件保存路径";fd.Filter = "所有文件(*.*)|*.*";fd.FileName = txt.Text.Trim();if (fd.ShowDialog() == DialogResult.OK){txt.Text = fd.FileName;}tbox.Focus();}#endregion/// <summary>/// 静态构造函数/// </summary>static ControlAttachProperty(){//ClearTextCommandClearTextCommand = new RoutedUICommand();ClearTextCommandBinding = new CommandBinding(ClearTextCommand);ClearTextCommandBinding.Executed += ClearButtonClick;//OpenFileCommandOpenFileCommand = new RoutedUICommand();OpenFileCommandBinding = new CommandBinding(OpenFileCommand);OpenFileCommandBinding.Executed += OpenFileButtonClick;//OpenFolderCommandOpenFolderCommand = new RoutedUICommand();OpenFolderCommandBinding = new CommandBinding(OpenFolderCommand);OpenFolderCommandBinding.Executed += OpenFolderButtonClick;SaveFileCommand = new RoutedUICommand();SaveFileCommandBinding = new CommandBinding(SaveFileCommand);SaveFileCommandBinding.Executed += SaveFileButtonClick;}
三．富文本框RichTextBox控件样式
RichTextBox的样式比较简单：
<!--***************************DefaultRichTextBox***************************--><Style x:Key="DefaultRichTextBox" TargetType="{x:Type RichTextBox}"><Setter Property="ContextMenu" Value="{DynamicResource TextBoxContextMenu}" /><Setter Property="SelectionBrush" Value="{StaticResource TextSelectionBrush}" /><Setter Property="FontFamily" Value="{StaticResource FontFamily}" /><Setter Property="FontSize" Value="{StaticResource FontSize}" /><Setter Property="BorderThickness" Value="1" /><Setter Property="BorderBrush" Value="{StaticResource ControlBorderBrush}" /><Setter Property="MinHeight" Value="26" /><Setter Property="MinWidth" Value="10" /><Setter Property="Background" Value="{StaticResource TextBackground}" /><Setter Property="Foreground" Value="{StaticResource TextForeground}" /><Setter Property="CaretBrush" Value="{StaticResource TextForeground}" /><Setter Property="local:ControlAttachProperty.FocusBorderBrush" Value="{StaticResource FocusBorderBrush}" /><Setter Property="local:ControlAttachProperty.MouseOverBorderBrush" Value="{StaticResource MouseOverBorderBrush}" /><Setter Property="Padding" Value="1" /><Setter Property="AllowDrop" Value="True" /><Setter Property="VerticalScrollBarVisibility" Value="Auto" /><Setter Property="FocusVisualStyle" Value="{x:Null}" /><Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst" /><!--该值指示是否启用了笔势--><Setter Property="Stylus.IsFlicksEnabled" Value="False" /><!--SnapsToDevicePixels:该值来确定呈现此元素是否应使用特定于设备的像素设置--><Setter Property="SnapsToDevicePixels" Value="True" /><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type TextBoxBase}"><Grid><Border x:Name="Bd"BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"Background="{TemplateBinding Background}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"><ScrollViewer x:Name="PART_ContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" /></Border></Grid><ControlTemplate.Triggers><Trigger Property="IsMouseOver" Value="True"><Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.MouseOverBorderBrush),RelativeSource={RelativeSource Self}}"/></Trigger><Trigger Property="IsFocused" Value="True"><Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.FocusBorderBrush),RelativeSource={RelativeSource Self}}"/></Trigger><Trigger Property="IsEnabled" Value="False"><Setter TargetName="Bd" Property="Opacity" Value="0.5" /></Trigger><Trigger Property="IsReadOnly" Value="True"><Setter TargetName="Bd" Property="Opacity" Value="0.85" /></Trigger></ControlTemplate.Triggers></ControlTemplate></Setter.Value></Setter></Style>
使用实力及效果：
四．密码输入框PasswordBox控件样式及扩展功能
密码输入控件的样式和第二节文本框TextBox基本一致，就不做详细的说明了，直接上样式的代码，相关逻辑（C#） 代码和上面是一样的（复用）。
<!--TextBox默认样式--><Style TargetType="{x:Type PasswordBox}" x:Key="DefaultPasswordBox"><Setter Property="ContextMenu" Value="{DynamicResource TextBoxContextMenu}" /><Setter Property="SelectionBrush" Value="{StaticResource TextSelectionBrush}" /><Setter Property="FontFamily" Value="{StaticResource FontFamily}" /><Setter Property="FontSize" Value="{StaticResource FontSize}" /><Setter Property="BorderThickness" Value="1" /><Setter Property="PasswordChar" Value="●"/><Setter Property="Height" Value="30" /><Setter Property="Width" Value="200" /><Setter Property="Background" Value="{StaticResource TextBackground}" /><Setter Property="Foreground" Value="{StaticResource TextForeground}" /><Setter Property="Padding" Value="0" /><Setter Property="BorderBrush" Value="{StaticResource ControlBorderBrush}" /><Setter Property="local:ControlAttachProperty.FocusBorderBrush" Value="{StaticResource FocusBorderBrush}" /><Setter Property="local:ControlAttachProperty.MouseOverBorderBrush" Value="{StaticResource MouseOverBorderBrush}" /><Setter Property="VerticalContentAlignment" Value="Center" /><!-- change SnapsToDevicePixels to True to view a better border and validation error --><Setter Property="SnapsToDevicePixels" Value="True" /><!--英 ['kærət] 美 ['kærət] 插入符号--><Setter Property="CaretBrush" Value="{StaticResource TextForeground}" /><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type PasswordBox}"><Grid x:Name="PART_Root"><Border x:Name="Bg" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"CornerRadius="{TemplateBinding local:ControlAttachProperty.CornerRadius}"BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" /><Grid x:Name="PART_InnerGrid"><Grid.ColumnDefinitions><ColumnDefinition Width="Auto" /><ColumnDefinition Width="*" /><ColumnDefinition Width="Auto" /></Grid.ColumnDefinitions><!--Label区域--><ContentControl x:Name="Label" Margin="1" Template="{TemplateBinding local:ControlAttachProperty.LabelTemplate}"Content="{TemplateBinding local:ControlAttachProperty.Label}"/><!--内容区域--><ScrollViewer x:Name="PART_ContentHost" BorderThickness="0" Grid.Column="1" IsTabStop="False" Margin="2"VerticalAlignment="Stretch" Background="{x:Null}" /><!--附加内容区域--><Border x:Name="PART_AttachContent" Grid.Column="2" Margin="2" VerticalAlignment="Center" HorizontalAlignment="Center" ><ContentControl VerticalAlignment="Center" VerticalContentAlignment="Center" Template="{TemplateBinding local:ControlAttachProperty.AttachContent}" /></Border></Grid></Grid><ControlTemplate.Triggers><Trigger Property="IsMouseOver" Value="True"><Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.MouseOverBorderBrush),RelativeSource={RelativeSource Self}}"/></Trigger><Trigger Property="IsFocused" Value="True"><Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.FocusBorderBrush),RelativeSource={RelativeSource Self}}"/></Trigger><!--不可用--><Trigger Property="IsEnabled" Value="False"><Setter TargetName="PART_Root" Property="Opacity" Value="{StaticResource DisableOpacity}"></Setter></Trigger></ControlTemplate.Triggers></ControlTemplate></Setter.Value></Setter></Style><!--TextBox包含清除Text按钮的样式--><Style TargetType="{x:Type PasswordBox}" x:Key="ClearButtonPasswordBox" BasedOn="{StaticResource DefaultPasswordBox}"><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type PasswordBox}}}"Margin="1,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style><!--TextBox包含附加属性Label的样式--><Style TargetType="{x:Type PasswordBox}" x:Key="LabelPasswordBox" BasedOn="{StaticResource DefaultPasswordBox}"><Setter Property="local:ControlAttachProperty.LabelTemplate" ><Setter.Value><ControlTemplate TargetType="ContentControl"><Border Width="60" Background="{StaticResource TextLabelBackground}"><TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock></Border></ControlTemplate></Setter.Value></Setter></Style><!--TextBox包含附加属性Label，以及ClearText按钮的样式--><Style TargetType="{x:Type PasswordBox}" x:Key="LabelClearButtonPasswordBox" BasedOn="{StaticResource DefaultPasswordBox}"><Setter Property="local:ControlAttachProperty.LabelTemplate" ><Setter.Value><ControlTemplate TargetType="ContentControl"><Border Width="60" Background="{StaticResource TextLabelBackground}"><TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock></Border></ControlTemplate></Setter.Value></Setter><Setter Property="local:ControlAttachProperty.AttachContent"><Setter.Value><ControlTemplate><local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0"local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type PasswordBox}}}"Margin="0,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/></ControlTemplate></Setter.Value></Setter></Style>
使用示例及效果：
原文地址：/anding/p/4970845.html
