如何在数据绑定的代码中创建平铺图像？ [英] How can I create a tiled image in code that is also data-bound?

问题描述

在代码隐藏的当前，我动态创建一个WPF图像控件，并将源绑定到自定义数据绑定。这将最终添加到网格中以提供背景图像：

  image myImage = new Image（）; 
 myImage.Stretch = Stretch.UniformToFill; 
 myImage.SetBinding（Image.SourceProperty，myBinding）; 
  

问题是我要平铺此图像，所以我可以找到这样做的唯一方法是创建一个ImageBrush并设置TileMode属性。但是没有SetBinding功能，所以我该如何完成我需要的？

  ImageBrush myBrush = new ImageBrush（）; 
 myBrush.TileMode = TileMode.Tile; 
 //不能这样做！ 
 myBrush.SetBinding（ImageBrush.SourceImageProperty，myBinding）; 
  

有没有其他方法在代码隐藏中平铺这样的图像？

解决方案

您不需要更改任何东西，只能使用BindingOperations：

 code> BindingOperations.SetBinding（myBrush，ImageBrush.ImageSourceProperty，myBinding）; 
  

您需要定义视口并用画笔填充视口：

  MyBrush.Viewport = new Rect（0，0，0.1，0.1）; 
 //创建一个矩形并用ImageBrush绘制。 
 Rectangle rec = new Rectangle（）; 
 rec.Stroke = Brushes.LimeGreen; 
 rec.StrokeThickness = 1; 
 rec.Fill = MyBrush; 
  

Current in code-behind, I dynamically create a WPF Image control and bind the source to a custom databinding. This will eventually be added to a grid to provide a background image:

Image myImage = new Image();
myImage.Stretch = Stretch.UniformToFill;
myImage.SetBinding(Image.SourceProperty, myBinding);

The problem is that I want to tile this image, so the only way I can find to do this is to create an ImageBrush and set the TileMode property. But there is no "SetBinding" function, so how can I accomplish what I need?

ImageBrush myBrush = new ImageBrush();
myBrush.TileMode = TileMode.Tile;
// Can't do this!
myBrush.SetBinding(ImageBrush.SourceImageProperty, myBinding);

Are there any other ways to tile an image like this in code-behind?

解决方案

You need not to change anything but use the BindingOperations:

BindingOperations.SetBinding(myBrush, ImageBrush.ImageSourceProperty, myBinding);

And you need to define the Viewport and the fill the viewport with brush:

MyBrush.Viewport = new Rect(0, 0, 0.1, 0.1);
// Create a rectangle and paint it with the ImageBrush.
Rectangle rec = new Rectangle();
rec.Stroke = Brushes.LimeGreen;
rec.StrokeThickness = 1;
rec.Fill = MyBrush;

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