读取Excel数据绑定到Gridview进行显示

读取Excel数据绑定到Gridview进行显示示例代码。

读取excel代码

/// <summary>
        /// 读取Excel
        /// authon:codeo.cn
        /// </summary>
        /// <param name="strExcelFileName"></param>
        /// <param name="strSheetName"></param>
        /// <returns>DataTable</returns>
        public static DataTable ExcelToDataTable(string strExcelFileName, string strSheetName)
        {
            //源的定义
            string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + strExcelFileName + ";" + "Extended Properties='Excel 8.0;HDR=NO;IMEX=1';";

            //Sql语句
            //string strExcel = string.Format("select * from [{0}$]", strSheetName); 这是一种方法
            string strExcel = "select * from  [" + strSheetName + "$]";//[sheet1$]

            //定义存放的数据表
            DataSet ds = new DataSet();

            //连接数据源
            OleDbConnection conn = new OleDbConnection(strConn);

            conn.Open();

            //适配到数据源
            OleDbDataAdapter adapter = new OleDbDataAdapter(strExcel, strConn);
            adapter.Fill(ds, strSheetName);

            conn.Close();

            return ds.Tables[strSheetName];
        }

GridView绑定daTable数据

 protected void Page_Load(object sender, EventArgs e)
        {
            string path = GetRootPath();
            DataTable daTable = ExcelToDataTable(path + "Content\demo.xlsx", "Sheet1");
            GridView1.DataSource = daTable;
            GridView1.DataBind();
        }

asp.net取得网站根目录的物理路径

/// <summary>
        /// 取得网站根目录的物理路径
        /// authon:codeo.cn
        /// </summary>
        /// <returns></returns>
        public static string GetRootPath()
        {
            string AppPath = "";
            HttpContext HttpCurrent = HttpContext.Current;
            if (HttpCurrent != null)
            {
                AppPath = HttpCurrent.Server.MapPath("~");
            }
            else
            {
                AppPath = AppDomain.CurrentDomain.BaseDirectory;
                if (Regex.Match(AppPath, @"\$", RegexOptions.Compiled).Success)
                    AppPath = AppPath.Substring(0, AppPath.Length - 1);
            }
            return AppPath;
        }

补充

如何修改表头信息？
只需在绑定数据前将datatable的列名修改。

daTable.Columns[0].ColumnName = "表头1";
daTable.Columns[2].ColumnName = "表头2";
daTable.Columns[3].ColumnName = "表头3";