如何设置textbox的字的大小

效果：

Style:

<ResourceDictionary xmlns="; xmlns:x="; xmlns:ctrls="clr-namespace:ImageButtonTest01.Control" xmlns:converter="clr-namespace:ImageButtonTest01.Control.Converter"> <converter:ImageTextBoxMarginLeftConverter x:Key="ITBMLC"/> <converter:PlaceholderFontSizeConverter x:Key="PHFSC"/> <SolidColorBrush x:Key="ImageTex; Color="#FF909090"/> <SolidColorBrush x:Key="ImageTex; Color="#FF007ACC"/> <SolidColorBrush x:Key="ImageTex; Color="#FF1E1E1E"/> <Style TargetType="{x:Type ctrls:ImageTextBox}"> <Setter Property="Foreground" Value="Black"/> <Setter Property="Background" Value="White"/> <Setter Property="BorderBrush" Value="{StaticResource ImageTex}"/> <Setter Property="BorderThickness" Value="2"/> <Setter Property="FontSize" Value="14"/> <Setter Property="CaretBrush" Value="Black"/> <Setter Property="Opacity" Value="1"/> <Setter Property="CornerRadius" Value="0"/> <Setter Property="FontSize" Value="18"/> <Setter Property="Template"> <Se; <ControlTemplate TargetType="{x:Type ctrls:ImageTextBox}"> <Border x:Name="border" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" CornerRadius="{Binding CornerRadius, RelativeSource={RelativeSource TemplatedParent}}"> <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> <Grid.ColumnDefinitions> <ColumnDefinition Width="{Binding CornerRadius.TopLeft, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource ITBMLC}}"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="Auto"/> <; <Image x:Name="PART_ContentIdentity" Grid.Column="1" Margin="0" Stretch="Uniform" Width="{Binding LeftImageWidth, RelativeSource={RelativeSource TemplatedParent}}" Height="{Binding LeftImageWidth, RelativeSource={RelativeSource TemplatedParent}}" Source="{Binding Image, RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Center" VerticalAlignment="Center"/> <ScrollViewer x:Name="PART_ContentHost" Grid.Column="2" IsTabStop="False" Margin="2,0,2,0" Focusable="false" Background="Transparent" SnapsToDevicePixels="True" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden" HorizontalAlignment="Stretch" VerticalAlignment="Center" FontSize="{Binding FontSize, RelativeSource={RelativeSource TemplatedParent}}" Foreground="{Binding Foreground, RelativeSource={RelativeSource TemplatedParent}}" HorizontalContentAlignment="Left"/> <TextBlock x:Name="PART_PlaceHolder" Grid.Column="2" IsHitTestVisible="False" Margin="3,0,3,0" HorizontalAlignment="Left" VerticalAlignment="Center" SnapsToDevicePixels="True" Visibility="Collapsed" Opacity="0.6" TextAlignment="{TemplateBinding TextAlignment}" Text="{Binding Path=PlaceHolder, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" FontSize="{Binding FontSize, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource PHFSC}}"/> <ctrls:ImageButton x:Name="PART_ClearTextButton" Grid.Column="3" Margin="2" IsTabStop="False" FontFamily="/ImageButtonTest01;component/Resources/#iconfont" Content="" FontSize="20" HorizontalAlignment="Right" VerticalAlignment="Center" Style="{StaticResource ImageButtonTransparent}"/> <ctrls:ImageButton x:Name="PART_ExtendIconFontButton" Grid.Column="4" FontSize="20" HorizontalAlignment="Center" VerticalAlignment="Center" FontFamily="/ImageButtonTest01;component/Resources/#iconfont" Content="{Binding ExtendIconFontText, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ImageButtonTransparent}" Command="{Binding ExtendButtonCommand, RelativeSource={RelativeSource TemplatedParent}}" CommandParameter="{Binding ExtendButtonCommandParameter, RelativeSource={RelativeSource TemplatedParent}}" CommandTarget="{Binding ExtendButtonCommandTarget, RelativeSource={RelativeSource TemplatedParent}}"/> <ctrls:ImageButton x:Name="PART_ExtendImageButton" Grid.Column="5" HorizontalAlignment="Center" VerticalAlignment="Center" FontFamily="/ImageButtonTest01;component/Resources/#iconfont" NormalImage="{Binding ExtendNormalImage, RelativeSource={RelativeSource TemplatedParent}}" HoverImage="{Binding ExtendHoverImage, RelativeSource={RelativeSource TemplatedParent}}" PressedImage="{Binding ExtendPressedImage, RelativeSource={RelativeSource TemplatedParent}}" DisabledImage="{Binding ExtendDisabledImage, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ImageButtonTransparent}" Command="{Binding ExtendButtonCommand, RelativeSource={RelativeSource TemplatedParent}}" CommandParameter="{Binding ExtendButtonCommandParameter, RelativeSource={RelativeSource TemplatedParent}}" CommandTarget="{Binding ExtendButtonCommandTarget, RelativeSource={RelativeSource TemplatedParent}}"/> </Grid> </Border> <Con; <DataTrigger Binding="{Binding Path=ExtendNormalImage, RelativeSource={RelativeSource Mode=Self}}" Value="{x:Null}"> <Setter TargetName="PART_ExtendImageButton" Property="Visibility" Value="Collapsed"/> </DataTrigger> <DataTrigger Binding="{Binding Path=ExtendIconFontText, RelativeSource={RelativeSource Mode=Self}}" Value=""> <Setter TargetName="PART_ExtendIconFontButton" Property="Visibility" Value="Collapsed"/> </DataTrigger> <DataTrigger Binding="{Binding Path=Text, RelativeSource={RelativeSource Mode=Self}}" Value=""> <Setter TargetName="PART_PlaceHolder" Property="Visibility" Value="Visible"/> <Setter TargetName="PART_ClearTextButton" Property="IsEnabled" Value="False"/> <Setter TargetName="PART_ExtendIconFontButton" Property="IsEnabled" Value="False"/> <Setter TargetName="PART_ExtendImageButton" Property="IsEnabled" Value="False"/> </DataTrigger> <Trigger Property="IsFocused" Value="False"> <Setter TargetName="border" Property="BorderBrush" Value="{StaticResource ImageTex}"/> </Trigger> <Trigger Property="IsMouseOver" Value="true"> <Setter TargetName="border" Property="BorderBrush" Value="{StaticResource ImageTex}"/> </Trigger> <Trigger Property="IsReadOnly" Value="True"> <Setter TargetName="PART_ClearTextButton" Property="IsEnabled" Value="False"/> <Setter Property="Opacity" Value="0.6" TargetName="border" /> </Trigger> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Opacity" Value="0.5" TargetName="border" /> </Trigger> </Con; </ControlTemplate> </Se; </Setter> </Style> </ResourceDictionary>

C#ImageTex

public class ImageTextBox : TextBox { private ImageButton mClearTextButton = null; private ImageButton mExtendIconFontButton = null; private ImageButton mExtendImageButton = null; static ImageTextBox() { De(typeof(ImageTextBox), new FrameworkPropertyMetadata(typeof(ImageTextBox))); } public ImageTextBox() { } public override void OnApplyTemplate() { mClearTextButton = GetTemplateChild("PART_ClearTextButton") as ImageButton; if (null != mClearTextButton) { mClearTex += OnClearTextClick; } mExtendIconFontButton = GetTemplateChild("PART_ExtendIconFontButton") as ImageButton; if (null != mExtendIconFontButton) { mExtendIconFon += ExtendButtonClick; } mExtendImageButton = GetTemplateChild("PART_ExtendImageButton") as ImageButton; if (null != mExtendIconFontButton) { mEx += ExtendButtonClick; } ba(); } private void ExtendButtonClick(object sender, RoutedEventArgs e) { RoutedEventArgs re = new RoutedEventArg, this); RaiseEvent(re); } private void OnClearTextClick(object sender, RoutedEventArgs e) { if (sender is ImageButton) { Text = ""; } } public static readonly DependencyProperty ImageProperty = De(nameof(Image), typeof(ImageSource), typeof(ImageTextBox), new FrameworkPropertyMetadata(null, FrameworkPro, ImageSourceChanged)); public ImageSource Image { get { return (ImageSource)GetValue(ImageProperty); } set { SetValue(ImageProperty, value); } } public static readonly DependencyProperty ExtendNormalImageProperty = De(nameof(ExtendNormalImage), typeof(ImageSource), typeof(ImageTextBox), new FrameworkPropertyMetadata(null)); public ImageSource ExtendNormalImage { get { return (ImageSource)GetValue(ExtendNormalImageProperty); } set { SetValue(ExtendNormalImageProperty, value); } } public static readonly DependencyProperty ExtendHoverImageProperty = De(nameof(ExtendHoverImage), typeof(ImageSource), typeof(ImageTextBox), new FrameworkPropertyMetadata(null)); public ImageSource ExtendHoverImage { get { return (ImageSource)GetValue(ExtendHoverImageProperty); } set { SetValue(ExtendHoverImageProperty, value); } } public static readonly DependencyProperty ExtendPressedImageProperty = De(nameof(ExtendPressedImage), typeof(ImageSource), typeof(ImageTextBox), new FrameworkPropertyMetadata(null)); public ImageSource ExtendPressedImage { get { return (ImageSource)GetValue(ExtendPressedImageProperty); } set { SetValue(ExtendPressedImageProperty, value); } } public static readonly DependencyProperty ExtendDisabledImageProperty = De(nameof(ExtendDisabledImage), typeof(ImageSource), typeof(ImageTextBox), new FrameworkPropertyMetadata(null)); public ImageSource ExtendDisabledImage { get { return (ImageSource)GetValue(ExtendDisabledImageProperty); } set { SetValue(ExtendDisabledImageProperty, value); } } public static readonly DependencyProperty PlaceHolderProperty = De(nameof(PlaceHolder), typeof(string), typeof(ImageTextBox), new PropertyMetadata("")); public string PlaceHolder { get { return (string)GetValue(PlaceHolderProperty); } set { SetValue(PlaceHolderProperty, value); } } public static readonly DependencyProperty ExtendIconFontTextProperty = De(nameof(ExtendIconFontText), typeof(string), typeof(ImageTextBox), new PropertyMetadata("")); public string ExtendIconFontText { get { return (string)GetValue(ExtendIconFontTextProperty); } set { SetValue(ExtendIconFontTextProperty, value); } } public static readonly DependencyProperty CornerRadiusProperty = De(nameof(CornerRadius), typeof(CornerRadius), typeof(ImageTextBox), new PropertyMetadata(new CornerRadius(0,0,0,0))); public CornerRadius CornerRadius { get { return (CornerRadius)GetValue(CornerRadiusProperty); } set { SetValue(CornerRadiusProperty, value); } } public static readonly DependencyProperty LeftImageWidthProperty = De(nameof(LeftImageWidth), typeof(double), typeof(ImageTextBox), new PropertyMetadata)); public double LeftImageWidth { get { return (double)GetValue(LeftImageWidthProperty); } set { SetValue(LeftImageWidthProperty, value); } } private static void ImageSourceChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e) { ImageTextBox itb = sender as ImageTextBox; ImageSource image = e.NewValue as ImageSource; i(LeftImageWidthProperty, image.Width); } public static readonly RoutedEvent ExtendClickEvent = Even(nameof(ExtendClick), Rou, typeof(RoutedEventHandler), typeof(ImageTextBox)); public event RoutedEventHandler ExtendClick { add { AddHandler(ExtendClickEvent, value); } remove { RemoveHandler(ExtendClickEvent, value); } } public static DependencyProperty ExtendButtonCommandProperty = De(nameof(ExtendButtonCommand), typeof(ICommand), typeof(ImageTextBox)); public ICommand ExtendButtonCommand { get { return (ICommand)GetValue(ExtendButtonCommandProperty); } set { SetValue(ExtendButtonCommandProperty, value); } } public static readonly DependencyProperty ExtendButtonCommandParameterProperty = De(nameof(ExtendButtonCommandParameter), typeof(object), typeof(ImageTextBox), new UIPropertyMetadata(null)); public object ExtendButtonCommandParameter { get { return (object)GetValue(ExtendButtonCommandParameterProperty); } set { SetValue(ExtendButtonCommandParameterProperty, value); } } public static readonly DependencyProperty ExtendButtonCommandTargetProperty = De(nameof(ExtendButtonCommandTarget), typeof(IInputElement), typeof(ImageTextBox), new UIPropertyMetadata(null)); public IInputElement ExtendButtonCommandTarget { get { return (IInputElement)GetValue(ExtendButtonCommandTargetProperty); } set { SetValue(ExtendButtonCommandTargetProperty, value); } } } 转换器ImageTex public class ImageTextBoxMarginLeftConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (value is double) { double v = (double)value; return v * 3.0 / 5.0; } return 0; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } }

使用：

<StackPanel Orientation="Vertical" Grid.Row="1"> <control:ImageTextBox x:Name="tbUserName" Width="200" Height="50" FontSize="30" Margin="5" CornerRadius="12" PlaceHolder="请输入用户名" ExtendIconFontText="" ExtendNormalImage="Resources/Image; ExtendHoverImage="Resources/Image; ExtendPressedImage="Resources/Image; ExtendDisabledImage="Resources/Image; Text="{Binding InputText, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" ExtendButtonCommand="{Binding BottonCommand}" ExtendButtonCommandParameter="button1 Click"/> <control:ImageTextBox x:Name="tbUserName1" Width="200" Height="50" Margin="5" ExtendIconFontText="" CornerRadius="20" FontSize="20" Background="YellowGreen" PlaceHolder="请输入用户名"/> <control:ImageTextBox x:Name="tbUserName2" Width="200" Height="50" Margin="5" ExtendNormalImage="Resources/Image; ExtendHoverImage="Resources/Image; ExtendPressedImage="Resources/Image; ExtendDisabledImage="Resources/Image; PlaceHolder="请输入用户名" Image="Resources/Image;/> <control:ImageTextBox x:Name="tbUserName3" Width="200" Height="50" Margin="5" PlaceHolder="请输入用户名" CornerRadius="20" IsEnabled="True" Image="Resources/Image;/> <control:ImageTextBox x:Name="tbUserName4" Width="200" Height="50" Margin="5" PlaceHolder="请输入用户名" CornerRadius="20" IsEnabled="False" Image="Resources/Image;/> <TextBox Width="200" Height="30" Margin="5"/> </StackPanel>

<!--校验错误提示模板--> <Setter Property="Valida;> <Se; <ControlTemplate> <Border CornerRadius="3" BorderBrush="Red" BorderThickness="1"> <StackPanel Orientation="Vertical"> <AdornedElementPlaceholder x:Name="Adorned"/> <TextBlock Width="{TemplateBinding Width}" Foreground="Red" FontSize="16"> <Tex; <Binding ElementName="Adorned" Path="AdornedElement.)[0].ErrorContent"/> </Tex; <Tex; <DropShadowEffect Opacity="0.6" ShadowDepth="3" Color="Black"/> </Tex; </TextBlock> </StackPanel> </Border> </ControlTemplate> </Se; </Setter>