自动遍历指定目录下的图片代码

在Page_Load添加下面代码：

private void Page_Load(object sender, System.EventArgs e)
        ...{
            // 在此处放置用户代码以初始化页面
            if(!Page.IsPostBack)
            ...{
                InitlstPic();
            }
        }

        public void InitlstPic()
        ...{
            string currentDir,fileName,imgDir;
            FileInfo fi;
            if(lstSex.SelectedItem.Text == "帅哥")
            ...{
                currentDir = Server.MapPath(".") + "/pic/gg";
                imgDir = "pic/gg";
            }
            else
            ...{
                currentDir = Server.MapPath(".") + "/pic/mm";
                imgDir = "pic/mm";
            }

            DirectoryInfo dir = new DirectoryInfo(currentDir);
            foreach(FileSystemInfo fsi in dir.GetFileSystemInfos())
            ...{
                if(fsi is FileInfo)
                ...{
                    fi = (FileInfo)fsi;
                    fileName = fi.Name;
                    if((fi.Extension == ".gif")||(fi.Extension == ".jpg"))
                    lstPic.Items.Add(new ListItem(fileName,imgDir + "/" + fileName));
                }
            }
            lstPic.SelectedIndex=0;   //lstPic是一个控件。
            face.Src = lstPic.Value;
        }

 不懂的自己分析一下。