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Button
- Command="local:ControlAttachProperty.ClearTextCommand"：定义Fbutton的命令对象实例Command
- CommandParameter="{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)
{
button.CommandBindings.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()
{
//ClearTextCommand
ClearTextCommand = new RoutedUICommand();
ClearTextCommandBinding = new CommandBinding(ClearTextCommand);
ClearTextCommandBinding.Executed += ClearButtonClick;
//OpenFileCommand
OpenFileCommand = new RoutedUICommand();
OpenFileCommandBinding = new CommandBinding(OpenFileCommand);
OpenFileCommandBinding.Executed += OpenFileButtonClick;
//OpenFolderCommand
OpenFolderCommand = 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)
{
button.CommandBindings.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)
{
button.CommandBindings.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)
{
button.CommandBindings.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()
{
//ClearTextCommand
ClearTextCommand = new RoutedUICommand();
ClearTextCommandBinding = new CommandBinding(ClearTextCommand);
ClearTextCommandBinding.Executed += ClearButtonClick;
//OpenFileCommand
OpenFileCommand = new RoutedUICommand();
OpenFileCommandBinding = new CommandBinding(OpenFileCommand);
OpenFileCommandBinding.Executed += OpenFileButtonClick;
//OpenFolderCommand
OpenFolderCommand = 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：