C# 上传文件

来源：互联网发布：淘宝迪奥正品店编辑：程序博客网时间：2024/06/13 13:41

using System;
using System.Text;
using System.Data;
using System.Windows.Forms;
using System.IO;

//拷贝一份想要上传的文件放到指定的程序目录下
public string UploadFile() //返回上传的文件名包含路径
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "Excel文件(*.xls)|*.xls|所有文件(*.*)|*.*";
ofd.Title = "选择你要上传的文件";
ofd.ShowDialog();
if (ofd.FileName.Length > 0)
{
  string path = System.Windows.Forms.Application.ExecutablePath;
  FileInfo exeInfo = new FileInfo(path);
  path = exeInfo.DirectoryName + "\\";   //程序根目录
  string tempExcel = path + "user data\\temp\\"+ ofd.FileName.Split(new Char[] { '\\' }).Last(); //上传后保存在程序目录下的文件名
  if (File.Exists(tempExcel))
  {
   string just_name = ofd.FileName.Split(new Char[] { '\\' }).Last(); //不包含路径的文件名
   DialogResult result = MessageBox.Show(just_name + "已经存在，确认覆盖？", "文件上传提示", MessageBoxButtons.OKCancel);
   if (result == DialogResult.OK)
   {
    File.Copy(ofd.FileName, tempExcel, true);
    return ofd.FileName;
   }else{
    return "未选择文件！";
   }
  }else{
   File.Copy(ofd.FileName, tempExcel, true);
   return ofd.FileName;
  }
}else{
  return "未选择文件！";
}
}

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