將過濾後的結果導出爲ex​​cel

Question

我有一個關於導出的問題，它擅長從gridview過濾一些結果。我使用這個鏈接的解決方案http://forums.asp.net/t/1991866.aspx?Export%20filtered%20results%20to%20excel%20in%20MVC%204 它一切正常，除了我導出的表有很多來自外鍵的ID列，我不能導出數字，我需要這些數據。我有一個變量，我保留所有與所導出的表相關的表的選擇連接，但我不知道如何在此變量和保持來自Session的篩選結果之間建立連接。你可以幫幫我嗎？謝謝。

Answer 1

1. 在Page_Load中顯示所有記錄。

2. 雖然只導出選擇我與斯科特

   訂單

   保護無效的Page_Load（對象發件人，EventArgs的）{ 如果 { DataTable的 DT = BindGridView（）（的IsPostBack！）; GridView1.DataSource = dt; GridView1.DataBind（）; }}

   private DataTable BindGridView(string name = null) 
   { 
       string connectionString = "Data Source=.SQLEXPRESS;Initial Catalog=Employee;Integrated Security=True"; 
       using (SqlConnection con = new SqlConnection(connectionString)) 
       { 
        SqlCommand cmd = new SqlCommand(); 
        if (name != null) 
        { 
         cmd.CommandText = "SELECT * FROM ORDERS WHERE Name='" + name + "'"; 
        } 
        else 
        { 
         cmd.CommandText = "SELECT * FROM ORDERS"; 
        } 
   
        cmd.Connection = con; 
        con.Open(); 
   
        SqlDataReader dr = cmd.ExecuteReader(); 
        DataTable dt = new DataTable(); 
        dt.Load(dr); 
        return dt; 
       } 
   } 
   
   protected void ExportToExcel(object sender, EventArgs e) 
   { 
       Response.Clear(); 
       Response.Buffer = true; 
       Response.AddHeader("content-disposition", "attachment;filename=exportdata.xls"); 
       Response.Charset = ""; 
       Response.ContentType = "application/vnd.ms-excel"; 
       using (StringWriter sw = new StringWriter()) 
       { 
        HtmlTextWriter hw = new HtmlTextWriter(sw); 
   
        GridView gv = new GridView(); 
        gv.DataSource = BindGridView("Scott"); // Seelct all the order where Name='Scott' - my filter query 
        gv.DataBind(); 
   
        gv.RenderControl(hw); 
        Response.Output.Write(sw.ToString()); 
        Response.Flush(); 
        Response.End(); 
       } 
   } 
   
   public override void VerifyRenderingInServerForm(Control control) 
   { 
   
   }