using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace WebPortal
{
    /// <summary>
    /// UpLoad 的摘要说明。
    /// 实现多文件上传
    /// </summary>
    public class Upload : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.Button UploadButton;
        protected System.Web.UI.WebControls.Label strStatus;

        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 (this.IsPostBack) this.SaveImages();
        }

        private Boolean SaveImages()
        {
            ///'遍历File表单元素
            HttpFileCollection files = HttpContext.Current.Request.Files;

            /// '状态信息
            System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
            strMsg.Append("上传的文件分别是：<hr color=red>");
            try
            {
                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);
                        strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
                        strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
                        strMsg.Append("上传文件的文件名：" + fileName + "<br>");
                        strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");
                       
                        postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("UpLoad/") + fileName);
                    }
                }
                strStatus.Text = strMsg.ToString();
                return true;
            }
            catch (System.Exception Ex)
            {
                strStatus.Text = Ex.Message;
                return false;
            }
        }
        #region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();//初始化过程，可以把初始化代码放进去，比Page_Load还优先
            base.OnInit(e);
        }

        /// <summary>
        /// 设计器支持所需的方法 - 用来放所有它自动生成的初始化代码的地方，自己写不相关的语句在里面，系统会自动把它删除，不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.ID = "Upload";
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion
    }

}