如何在ASP.NET中导入导出到Excel功能？

在我的asp.net web应用程序中，需要在excel中导入和导出数据。我该怎么做呢？

下面是在excel中导出数据的代码

StringWriter sw = new StringWriter();
    HtmlTextWriter htw = new HtmlTextWriter(sw);
    string attachment = "attachment; filename=excel" + ".xls";
    Response.ClearContent();
    Response.AddHeader("content-disposition", attachment);
    rptMain.DataBind();
    rptMain.RenderControl(htw);
    Response.Write(sw.ToString());
    Response.Flush();
    Response.End();

下面是从Excel导入数据的代码

DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb");
        DbDataAdapter adapter = factory.CreateDataAdapter();
        DbCommand selectCommand = factory.CreateCommand();
        selectCommand.CommandText = "SELECT ColumnNames FROM [Sheet1$]";
        DbConnection connection = factory.CreateConnection();
        connection.ConnectionString = connectionString;
        selectCommand.Connection = connection;
        adapter.SelectCommand = selectCommand;
        DataTable dtbl = new DataTable();
        adapter.Fill(dtbl);

        if (dtbl.Rows.Count > 0)
        {
         .............
         .............
        }

---

下面是在excel中导出数据的代码

StringWriter sw = new StringWriter();
    HtmlTextWriter htw = new HtmlTextWriter(sw);
    string attachment = "attachment; filename=excel" + ".xls";
    Response.ClearContent();
    Response.AddHeader("content-disposition", attachment);
    rptMain.DataBind();
    rptMain.RenderControl(htw);
    Response.Write(sw.ToString());
    Response.Flush();
    Response.End();

下面是从Excel导入数据的代码

DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb");
        DbDataAdapter adapter = factory.CreateDataAdapter();
        DbCommand selectCommand = factory.CreateCommand();
        selectCommand.CommandText = "SELECT ColumnNames FROM [Sheet1$]";
        DbConnection connection = factory.CreateConnection();
        connection.ConnectionString = connectionString;
        selectCommand.Connection = connection;
        adapter.SelectCommand = selectCommand;
        DataTable dtbl = new DataTable();
        adapter.Fill(dtbl);

        if (dtbl.Rows.Count > 0)
        {
         .............
         .............
        }

---

您希望导出到Excel 2003、2007还是2010？OleDb jet版本因Excel的每个版本而异。您发布了45个问题，但尚未进行投票。您是否希望导出到Excel 2003、2007或2010？OleDb jet的版本因Excel的每个版本而异。你有45个问题，你还没有投票。