上传图片并修改其大小(C#)的方法

上传图片并修改其大小

//thefile是一个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(上传成功!);

ResponseWrite(SystemWebHttpContextCurrentServerMapPath(imagepng));