.net WPF中的下划线文本

我有一个WPF用户控件，它有一个文本框。我设置了文本

下划线

与否，

删除线

与否

我认为我的代码有问题，尤其是未设置的部分，因为每次都不能正常工作。。。可能下划线的某些元素已用删除线删除

特别是当将同一属性多次设置为同一值时，它会不断添加

private void UpdateUnderline()
{
    if (this.IsUnderline)
    {
        this.MyTextBlock.TextDecorations.Add(TextDecorations.Underline);
    }
    else
    {
        foreach (var item in TextDecorations.Underline)
        {
            this.MyTextBlock.TextDecorations.Remove(item);
        }
    }
}

private void UpdateStrikethrough()
{
    if (this.IsStrikethrough)
    {
        this.MyTextBlock.TextDecorations.Add(TextDecorations.Strikethrough);
    }
    else
    {
        foreach (var item in TextDecorations.Strikethrough)
        {
            this.MyTextBlock.TextDecorations.Remove(item);
        }
    }
}

因为我做不到

this.MyTextBlock.TextDecorations.Contains(TextDecorations.Strikethrough);

它不断地添加，再添加，所以当它删除…时，它仍然是：）

例子：

---

我重新创建了它，效果很好：

娱乐： XAML：

“脏”解决方案：

    private void UpdateUnderline()
    {
        if (this.IsUnderline)
        {
            foreach (var item in TextDecorations.Underline)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
            this.MyTextBlock.TextDecorations.Add(TextDecorations.Underline);
        }
        else
        {
            foreach (var item in TextDecorations.Underline)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
        }
    }

---

为什么你要在你的if语句的非真块上对每个都做一个计算？@Nate:因为这就是生活：）。。。我也不知道。

public partial class MainWindow : Window
{
    public MainWindow()
    {
        DataContext = this;
    }

    private Boolean _IsUnderline;
    public Boolean IsUnderline
    {
        get
        {
            return _IsUnderline;
        }
        set
        {
            _IsUnderline = value;
            UpdateUnderline();
        }
    }
    private Boolean _IsStrikethrough;
    public Boolean IsStrikethrough
    {
        get
        {
            return _IsStrikethrough;
        }
        set
        {
            _IsStrikethrough = value;
            UpdateStrikethrough();
        }
    }

    private void UpdateUnderline()
    {
        if (this.IsUnderline)
        {
            this.MyTextBlock.TextDecorations.Add(TextDecorations.Underline);
        }
        else
        {
            foreach (var item in TextDecorations.Underline)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
        }
    }

    private void UpdateStrikethrough()
    {
        if (this.IsStrikethrough)
        {
            this.MyTextBlock.TextDecorations.Add(TextDecorations.Strikethrough);
        }
        else
        {
            foreach (var item in TextDecorations.Strikethrough)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
        }
    }

    private void Underline_Click(object sender, RoutedEventArgs e)
    {
        IsUnderline = true;
    }

    private void Strikethrough_Click(object sender, RoutedEventArgs e)
    {
        IsStrikethrough = true;
    }

    private void NoUnderline_Click(object sender, RoutedEventArgs e)
    {
        IsUnderline = false;
    }

    private void NoStrikethrough_Click(object sender, RoutedEventArgs e)
    {
        IsStrikethrough = false;
    }
}

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"
        Height="350"
        Width="525">
    <Grid>
        <StackPanel>
            <CheckBox Content="Underline"
                      IsChecked="{Binding IsUnderline}" />
            <CheckBox Content="Strikethrough"
                      IsChecked="{Binding IsStrikethrough}" />
            <TextBlock Name="MyTextBlock"
                       Text="Quick Brown Fox Jumps Over The Lazy Dog." />
        </StackPanel>
    </Grid>
</Window>

public partial class MainWindow : Window
{
    public MainWindow()
    {
        DataContext = this;
    }

    private Boolean _IsUnderline;
    public Boolean IsUnderline
    {
        get
        {
            return _IsUnderline;
        }
        set
        {
            _IsUnderline = value;
            UpdateUnderline();
        }
    }
    private Boolean _IsStrikethrough;
    public Boolean IsStrikethrough
    {
        get
        {
            return _IsStrikethrough;
        }
        set
        {
            _IsStrikethrough = value;
            UpdateStrikethrough();
        }
    }

    private void UpdateUnderline()
    {
        if (this.IsUnderline)
        {
            this.MyTextBlock.TextDecorations.Add(TextDecorations.Underline);
        }
        else
        {
            foreach (var item in TextDecorations.Underline)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
        }
    }

    private void UpdateStrikethrough()
    {
        if (this.IsStrikethrough)
        {
            this.MyTextBlock.TextDecorations.Add(TextDecorations.Strikethrough);
        }
        else
        {
            foreach (var item in TextDecorations.Strikethrough)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
        }
    }
}

    private void UpdateUnderline()
    {
        if (this.IsUnderline)
        {
            foreach (var item in TextDecorations.Underline)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
            this.MyTextBlock.TextDecorations.Add(TextDecorations.Underline);
        }
        else
        {
            foreach (var item in TextDecorations.Underline)
            {
                this.MyTextBlock.TextDecorations.Remove(item);
            }
        }
    }