App_Code/upload.cs

微信扫码关注公众号，代码整理好后第一时间通知你。

using System;
using System.IO;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
/// <summary>
/// upload 的摘要说明
/// </summary>
public class upload
{
    public upload()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    public string[] Resup ={ "上传失败或指定的文件不存在", "文件太大！", "格式不对，！", "上传成功！" };
    public string s = string.Empty;
    public string fname = string.Empty;
    public string Up(System.Web.UI.HtmlControls.HtmlInputFile File2, string Pa)
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //

        if (File2.PostedFile.ContentLength.ToString() == "0")
        {
            return "0";
        }
        else
        {
            //获取文件名称
            string ss;
            fname = System.DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString();
            ss = System.DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString() + Path.GetExtension(File2.PostedFile.FileName);
            if (File2.PostedFile.ContentLength / 1024 > 10000000)
            { return "1"; }
            else
            {
                string ty = File2.PostedFile.ContentType;

                File2.PostedFile.SaveAs(System.Web.HttpContext.Current.Server.MapPath(Pa) + ss);
                s =  ss;
                return "3";
                //Up= ss;

            }
        }

    }
}