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(, ).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[].Rows.Count == )
             {
                 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 = ; i < ds.Tables[].Rows.Count; i++)
                 {
                     string sql_str = "INSERT INTO PoInfo VALUES('" + ds.Tables[].Rows[i][] + "' ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "' ,'" + ds.Tables[].Rows[i][] + "' ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'" + ds.Tables[].Rows[i][] + "'  ,'')";

                    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;
         }