Response.WriteFile - 写出字节流 [英] Response.WriteFile -- Write out a byte stream

问题描述

时可以写入到从使用的Response.Write / WriteFile的动态创建位图的HTTP响应流无图像保存到硬盘驱动器？

Is is possible to write to the http response stream from a dynamically created bitmap using the Response.Write/WriteFile without saving the image to the hard drive?

推荐答案

您可以使用<一个href=\"http://msdn.microsoft.com/en-us/library/system.io.memorystream.aspx\"><$c$c>MemoryStream并指定为<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.htt$p$psponse.outputstream.aspx\"><$c$c>Response.OutputStream,或者干脆保存位图时，使用 Response.OutputStream 直接

有上这个页，但它干脆直接保存位图到输出流：

There is an example in the documentation on this page, though it simply saves the bitmap directly to the output stream:

// Set the correct content type, so browser/client knows what you are sending
Response.ContentType = "image/jpeg";
Response.Clear();

Bitmap bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmp);

bmp.Save(Response.OutputStream, ImageFormat.Jpeg);

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