方法1
HttpFileCollection files = HttpContext.Current.Request.Files;
//我设置的大小不超过A4纸的缩略图
int newWidth=620;
int newHeight=880;
System.Drawing.Image img = null;
for(int iFile = 0; iFile < files.Count; iFile++)
{
///检查文件扩展名字
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")
{
//图片大小限制在1K到2M之间
if(postedFile.ContentLength>=1024 && postedFile.ContentLength<=20480000 && postedFile.ContentType.ToString().ToLower().IndexOf("image") >= 0)
{
img = System.Drawing.Image.fromStream(postedFile.InputStream);
&nb
+++ HiddenField01.aspx页面
++ 页面代码如下：
<asp:HiddenField ID="HiddenField1" runat="server" />
<asp:HiddenField ID="HiddenField2" runat="server" />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
++ 后台代码，如下：
protected void Button1_C ......
