如何在 WPF 中向形状添加文本
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How to add text to the shapes in WPF
提问by Muhammad Umer
I am drawing Circleon an WPFwindow. The problem is that I am unable add Textto the Circle. The code is given below:
我Circle在WPF窗户上画画。问题是我无法添加Text到Circle. 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;
}
Please help me in this regard.
请在这方面帮助我。
回答by H.B.
Shapes are simply shapes, if you want to add text then add both the shape and a TextBlockwith your text to a common container which lays them on top of each other, e.g. a Gridwithout rows or columns.
形状只是形状，如果您想添加文本，则将形状和TextBlock带有文本的 a添加到一个公共容器中，该容器将它们放在彼此的顶部，例如 aGrid没有行或列。
In XAML:
在 XAML 中：
<Grid>
<Ellipse Width="100" .../>
<TextBlock Text="Lorem Ipsum"/>
</Grid>
C#
C＃
var grid = new Grid();
grid.Children.Add(new Ellipse { Width = 100, ... });
grid.Children.Add(new TextBlock { Text = "Lorem Ipsum" });
回答by anhoppe
Or you can use direct positioning in a Canvas if you prefer direct control over the draw position:
或者，如果您更喜欢直接控制绘制位置，则可以在 Canvas 中使用直接定位：
My sample defines a UI control that draws rectangles with text in it:
我的示例定义了一个 UI 控件，用于绘制带有文本的矩形：
XAML:
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>
Code behind:
后面的代码：
// 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);
}
