ASP.NET 导入excel 数据

1,需要给上传文件的目录给予权限

2、

 <asp:FileUpload ID="FileUpload1" runat="server" />  
        <asp:Button ID="btn_ExInto_pass" runat="server" Text="导入" OnClick="btn_ExInto_pass_Click" />

　　

  protected void btn_ExInto_pass_Click(object sender, EventArgs e)    //导入
        {
            if (FileUpload1.HasFile == false)
            {
                Alert.Show("请您选择Excel文件");
                return;//当无文件时,返回        
            }
            string IsXls = System.IO.Path.GetExtension(FileUpload1.FileName).ToString().ToLower();
            if (IsXls != ".xls")
            {
                Alert.Show("只可以选择Excel文件");
                return;//当选择的不是Excel文件时,返回       
            }
            string filename = FileUpload1.FileName;                     //获取Execle文件名  
            string dirPath = "UpLoadFile\" + System.DateTime.Now.Year.ToString();
            if (!Directory.Exists(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + dirPath))
                Directory.CreateDirectory(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + dirPath);

            Random rand = new Random(unchecked((int)DateTime.Now.Ticks));
            string strpath = dirPath + "\" + DateTime.Now.ToString("MMddHHmmss") + rand.Next(1000, 9999).ToString() + ".xls";  //获取Execle文件路径 
            string strError = "", strRepeat = "", asMsg = "";
            strpath = Server.MapPath(strpath);
            FileUpload1.PostedFile.SaveAs(strpath);

            DataSet ds = ExecleDs(strpath, filename);
            if (ds == null || ds.Tables[0].Rows.Count == 0)
            {
                Alert.Show("Excel表为空表,无数据!");   //当Excel表为空时,对用户进行提示       
            }
            else
            {
                //for add

                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    string sql_str = "INSERT INTO PoInfo VALUES('" + ds.Tables[0].Rows[i][0] + "' ,'" + ds.Tables[0].Rows[i][1] + "'  ,'" + ds.Tables[0].Rows[i][2] + "' ,'" + ds.Tables[0].Rows[i][3] + "' ,'" + ds.Tables[0].Rows[i][4] + "'  ,'" + ds.Tables[0].Rows[i][5] + "'  ,'" + ds.Tables[0].Rows[i][6] + "'  ,'" + ds.Tables[0].Rows[i][7] + "'  ,'" + ds.Tables[0].Rows[i][8] + "'  ,'" + ds.Tables[0].Rows[i][9] + "'  ,'" + ds.Tables[0].Rows[i][10] + "'  ,'" + ds.Tables[0].Rows[i][11] + "'  ,'" + ds.Tables[0].Rows[i][12] + "'  ,'')";

                   int row = SqlHelper.ExecuteSql(SqlHelper.LocalSqlServer, sql_str);

                }

                Alert.Show("导入数据成功！");
                BindGrid();

            }
        }
        public DataSet ExecleDs(string filenameurl, string table)
        {
            string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filenameurl + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'";
            OleDbConnection conn = new OleDbConnection(strConn);
            conn.Open();
            OleDbDataAdapter odda = new OleDbDataAdapter("select * from [Sheet1$]", conn);
            DataSet ds = new DataSet();
            try
            {
                odda.Fill(ds, table);
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                odda.Dispose();
                conn.Close();
                conn.Dispose();
                System.IO.File.Delete(filenameurl);    //删除文件
            }
            return ds;
        }