asp.net 从Excel表导入数据到数据库中

http://www.cnblogs.com/hfzsjz/archive/2010/12/31/1922901.html

http://hi.baidu.com/ctguyg/item/ebc857e90e436ae1fb42ba01

  <form action="" method="post" runat ="server">
        <div>
      <span>请选择文件：</span><asp:FileUpload ID="FileUpload1" runat="server" />
        <asp:Button ID="btnExport" runat="server" Text="导入" onclick="btnExport_Click" />
    </div>
    <div>
        <asp:GridView ID="GridView1" runat="server">
        </asp:GridView>
    </div>
    </form>

        protected void btnExport_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.FileUpload1.HasFile)
                {
                    DataTable inputdt = new DataTable();
                    int len = this.FileUpload1.FileName.ToString().Trim().Length;
                    string path = "~/temp/upfile/" + this.FileUpload1.FileName.ToString().Trim();
                    path = Server.MapPath(path);
                    this.FileUpload1.SaveAs(path); //上传文件
                    inputdt = JDBMS.DBUtility.MDBHelper.InputExcel(path, this.FileUpload1.FileName.ToString().Trim().Substring(0, len - 4));
                    if (Session["inputdt"] != null)
                        Session.Remove("inputdt");
                    Session.Add("inputdt", inputdt);
                    if (inputdt.Rows.Count > 0)
                    {
                        this.GridView1.DataSource = inputdt;
                        this.GridView1.DataBind();
                    }
                }
                else
                {
                    throw new Exception("请选择导入表的路径");
                }
            }
            catch (Exception ex)
            {
                Response.Write("<script language='javascript'>alert('" + ex.Message + "');</script>");
            }
        }

     /// <summary>
        /// 导入数据到数据集中
        /// </summary>
        /// <param name="Path"></param>
        /// <param name="TableName"></param>
        /// <param name="tablename2">如果这个有就以他为表名，没有的话就以TableName</param>
        /// <returns></returns>
        public static DataTable InputExcel(string Path, string TableName)
        {
            try
            {
                string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Path + ";" + "Extended Properties=Excel 8.0;";
                OleDbConnection conn = new OleDbConnection(strConn);
                conn.Open();
                string strExcel = "";
                OleDbDataAdapter myCommand = null;
                strExcel = "select * from [" + TableName + "$]";
                myCommand = new OleDbDataAdapter(strExcel, strConn);
                DataTable dt = new DataTable();
                myCommand.Fill(dt);
                conn.Close();
                return dt;
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }