如何在WPF中向形状添加文本

本文关键字：添加 文本 WPF | 更新日期: 2023-09-27 18:12:17

我在WPF窗口上画Circle。问题是我无法将Text添加到Circle中。代码如下:

public Graphics()
{
    InitializeComponent();
    StackPanel myStackPanel = new StackPanel();
    Ellipse myel = new Ellipse();
    SolidColorBrush mscb = new SolidColorBrush();
    mscb.Color = Color.FromArgb(255, 255, 0, 0);
    myel.Fill = mscb;
    myel.StrokeThickness = 2;
    myel.Stroke = Brushes.Black;
    myel.Width = 100;
    myel.Height = 100;
    //string str = "hello";
    myStackPanel.Children.Add(myel);
    this.Content = myStackPanel;
}

请在这方面帮助我。

如何在WPF中向形状添加文本

形状是简单的形状，如果你想添加文本，然后添加形状和TextBlock与你的文本到一个共同的容器，将它们放在彼此的顶部，例如，没有行或列的Grid。

在XAML: 

<Grid>
    <Ellipse Width="100" .../>
    <TextBlock Text="Lorem Ipsum"/>
</Grid>
c# 

var grid = new Grid();
grid.Children.Add(new Ellipse { Width = 100, ... });
grid.Children.Add(new TextBlock { Text = "Lorem Ipsum" });

如果你更喜欢直接控制绘制位置，也可以在Canvas中使用直接定位:

我的示例定义了一个UI控件，用于绘制带有文本的矩形:

XAML : 

<UserControl x:Class="DrawOnCanvas"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:MySample"
         mc:Ignorable="d" 
         d:DesignHeight="450" d:DesignWidth="800">
<Grid>
    <Canvas x:Name="DrawCanvas" Height="30"/>
</Grid>

代码:

    // You might e.g. call this in the constructor of DrawOnCanvas
    internal void DrawRectWithText()
    {
        var rect = new System.Windows.Shapes.Rectangle();
        rect.Stroke = new SolidColorBrush(Colors.Black);
        rect.Fill = new SolidColorBrush(Colors.Beige);
        rect.Width = 100;
        rect.Height = 100;
        // Use Canvas's static methods to position the rectangle
        Canvas.SetLeft(rect, 100);
        Canvas.SetTop(rect, 100);
        var text = new TextBlock()
        {
            Text = task.Title,
        };
        // Use Canvas's static methods to position the text
        Canvas.SetLeft(text, 90);
        Canvas.SetTop(text, 90);
        // Draw the rectange and the text to my Canvas control.
        // DrawCanvas is the name of my Canvas control in the XAML code
        DrawCanvas.Children.Add(rect);
        DrawCanvas.Children.Add(text);
    }
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