upload/upload.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class upload_upload : System.Web.UI.Page
{
    string kname = "";
    protected void Page_Load(object sender, EventArgs e)
    {
      
           if (!IsPostBack)
           {
               if (Request.QueryString["kname"] != null)
               {
                   kname = Request.QueryString["kname"].ToString();
               }
               else {
                   string script = "<script language=javascript>";
                   script = script + "alert('上传失败，无效控件');";
                   
                   script = script + "</script>";
                   this.Page.Response.Write(script);
                   return;
               }
           }

    }
    protected void Button1_Click(object sender, EventArgs e)
    {

        string file = this.FileUpload1.FileName;
       
        if (file.Length == 0)
        {
            MessageBox.Show(this.Page, "文件不能为空?");

            return;
        }
        kname = Request.QueryString["kname"].ToString();
        string suffix = file.Substring(file.LastIndexOf(".")).ToString();//
        string newFileName = DateTime.Now.ToFileTime().ToString() + suffix;//
        FileUpload1.SaveAs(Server.MapPath("~/upload/") + newFileName);//Server.MapPath("")
      string  tp = newFileName;
     // Response.Write(tp);
       
        string script = "<script language=javascript>" ;
        script = script + "alert('上传成功');";

        script = script + "parent.document.form1." + kname + ".value='" + tp + "';";///" + tp + "
        //script = script + "parent.document.form1.fj.value='" + tp + "';";///" + tp + "
        script = script + "</script>";
       // Response.Write(script);
       this.Page.Response.Write( script );
    }
}