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HttpFileCollection files = HttpContext.Current.Request.Files;
//ÎÒÉèÖõĴóС²»³¬¹ýA4Ö½µÄËõÂÔͼ
int newWidth=620;
int newHeight=880;
System.Drawing.Image img = null;
for(int iFile = 0; iFile < files.Count; iFile++)
{
///¼ì²éÎļþÀ©Õ¹Ãû×Ö
HttpPostedFile postedFile = files[iFile];
string fileName, fileExtension;
fileName = System.IO.Path.GetFileName(postedFile.FileName);
if (fileName != "")
{
fileExtension = System.IO.Path.GetExtension(fileName);
string name=DateTime.Now.ToString("yyyyMMddHHmmssffffff")+iFile+fileExtension;
string filePath=System.Web.HttpContext.Current.Request.MapPath(@"UpdatePic/") + name;
if (fileExtension.ToLower()==".jpg" || fileExtension.ToLower()==".gif" || fileExtension.ToLower()==".png")
{
//ͼƬ´óСÏÞÖÆÔÚ1Kµ½2MÖ®¼ä
if(postedFile.ContentLength>=1024 && postedFile.ContentLength<=20480000 && postedFile.ContentType.ToString().ToLower().IndexOf("image") >= 0)
{
img = System.Drawing.Image.fromStream(postedFile.InputStream);
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