上傳圖片並修改其大小(C#)的方法

　　上傳圖片並修改其大小
　　//thefile是一個File Field HTML 控件
　　thefilePostedFileSaveAs(SystemWebHttpContextCurrentServerMapPath(temppng));
　　MemoryStream MemStream=new MemoryStream();
　　SystemDrawingImage imgOutput =SystemDrawingBitmapFromFile(SystemWebHttpContextCurrentServerMapPath(temppng));
　　//修改成×大小
　　SystemDrawingImage imgOutput=imgOutputGetThumbnailImage(nullIntPtrZero);
　　imgOutputSave(SystemWebHttpContextCurrentServerMapPath(imagepng) ImageFormatPng);
　　ResponseWrite(thefilePostedFileFileName);
　　ResponseWrite(Len:+MemStreamLengthToString());
　　imgOutputDispose();
　　imgOutputDispose();
　　ResponseWrite(上傳成功!);
　　ResponseWrite(SystemWebHttpContextCurrentServerMapPath(imagepng));

From:http://tw.wingwit.com/Article/program/net/201311/13582.html