Is there a way I can write the output of WPF say a canvas to a image file, jpg or the like.
有没有办法我可以写WPF的输出说画布到图像文件，jpg等。
I want to use WPF to create a background for me as I want to use the BitmapEffects for a rectangle and also radius the corners.
我想使用WPF为我创建一个背景，因为我想将BitmapEffects用于矩形并且也使角落半径。
I want to use the bitmap in a webpage.
我想在网页中使用位图。
Is this possible?
这可能吗？
Malcolm
马尔科姆
1 个解决方案
#1
9
I have a blog post all about this here. Here's the code from the article:
我在这里有关于此的博客文章。这是文章中的代码：
Rect rect = new Rect(canvas.RenderSize);
RenderTargetBitmap rtb = new RenderTargetBitmap((int)rect.Right,
(int)rect.Bottom, 96d, 96d, System.Windows.Media.PixelFormats.Default);
rtb.Render(canvas);
//encode as PNG
BitmapEncoder pngEncoder = new PngBitmapEncoder();
pngEncoder.Frames.Add(BitmapFrame.Create(rtb));
//save to memory stream
System.IO.MemoryStream ms = new System.IO.MemoryStream();
pngEncoder.Save(ms);
ms.Close();
System.IO.File.WriteAllBytes("logo.png", ms.ToArray());
Console.WriteLine("Done");
#1
9
I have a blog post all about this here. Here's the code from the article:
我在这里有关于此的博客文章。这是文章中的代码：
Rect rect = new Rect(canvas.RenderSize);
RenderTargetBitmap rtb = new RenderTargetBitmap((int)rect.Right,
(int)rect.Bottom, 96d, 96d, System.Windows.Media.PixelFormats.Default);
rtb.Render(canvas);
//encode as PNG
BitmapEncoder pngEncoder = new PngBitmapEncoder();
pngEncoder.Frames.Add(BitmapFrame.Create(rtb));
//save to memory stream
System.IO.MemoryStream ms = new System.IO.MemoryStream();
pngEncoder.Save(ms);
ms.Close();
System.IO.File.WriteAllBytes("logo.png", ms.ToArray());
Console.WriteLine("Done");