c# - 如何在 C# 代码中创建 ImageBrush

Question

在 XAML 中:

    <Rectangle Stroke="Aqua" Opacity="0.7" StrokeThickness="10" Canvas.Left="24" Canvas.Top="22" Height="86" Width="102">
        <Rectangle.Fill>
            <ImageBrush ImageSource="C:\Users\xiaorui.dong\Pictures\profile.jpeg"></ImageBrush>
        </Rectangle.Fill>
    </Rectangle>

XAML 工作正常，但是如何在 C# 代码中创建上面的 ImageBrush:

C#应该是这样的:

Rectangle rectangle = new Rectangle();
rectangle.StrokeThickness = 10;
rectangle.Height = 200;
rectangle.Width = 100;
rectangle.SetValue(Canvas.LeftProperty, 100d);
rectangle.SetValue(Canvas.TopProperty, 100d);
rectangle.Fill = new ImageBrush(new BitmapImage(new Uri(@"C:\Users\xiaorui.dong\Pictures\profile.jpeg")));

Answer 1

我猜问题出在定位图像上，你得到的异常是因为你没有提供 UriKind 参数。尝试将 UriKind.Relative 作为 Uri 的参数:

rectangle.Fill = new ImageBrush(new BitmapImage(
    new Uri(@"C:\Users\xiaorui.dong\Pictures\profile.jpeg", UriKind.Relative)));