动态生成TemplateField无法触发模板内的RowCommand

LEOlws 2010-07-05 06:27:02

我Grid的列是动态生成的TemplateField，其中TemplateField中是创建的按钮并设置了按钮的CommandName属性
但是在页面上触发按钮时，由于控件的状态未保存，无法回传到RowCommand事件

请问大家，如何保存动态生成的TemplateField的状态，或者有更好的触发RowCommand事件的方法。谢谢

我给分从来不吝啬，望大家不吝赐教

代码如下：

ASPX页面



<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="SystemManagement_SmartForms_Default2" %>





<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">



<head runat="server">

 <title>TemplateField</title>

</head>



<body>



    <form id="form1" runat="server">



        <div>



            <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="id"

                DataSourceID="SqlDataSource1" OnRowCommand="GridView1_RowCommand">



            </asp:GridView>

            <asp:Button ID="Button1" runat="server" Text="Button" />



        </div>



        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:default %>"

            ProviderName="<%$ ConnectionStrings:default.ProviderName %>" SelectCommand="SELECT [id], [name] FROM [SmartFormsTest]"></asp:SqlDataSource>



    </form>



</body>



</html>

CS页面



using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;



public partial class SystemManagement_SmartForms_Default2 : System.Web.UI.Page {



    protected void Page_Load(object sender, EventArgs e) {



    }



    protected override void OnInit(EventArgs e) {

        if (!IsPostBack) {



            //宣告TemplateField 

            TemplateField customField;



            //產生一個新的TemplateField 

            customField = new TemplateField();



            //設定TemplateField的Header            

            customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "編號");



            //設定TemplateField的Data 

            customField.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "id");



            //加入TemplateField到GridView 

            this.GridView1.Columns.Add(customField);



            customField = new TemplateField();

            customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "名稱");

            customField.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "name");

            this.GridView1.Columns.Add(customField);





        }

        base.OnInit(e);

    }





    

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) {

        string commandString = string.Empty;

        if (e.CommandName == "DeleteCommand") {

            commandString = "删除";

        }

        this.Page.ClientScript.RegisterStartupScript(Page.GetType(), "alert", "alert('" + "这是得到的Command" + commandString + "')", true);

    }

}



public class GridViewTemplate : ITemplate {



    private DataControlRowType templateType;

    private string columnName;



    public GridViewTemplate(DataControlRowType type, string colname) {

        templateType = type;

        columnName = colname;

    }



    public void InstantiateIn(System.Web.UI.Control container) {

        switch (templateType) {

            case DataControlRowType.Header:



                Literal lc = new Literal();



                lc.Text = "<B>" + columnName + "</B>";



                container.Controls.Add(lc);



                break;



            case DataControlRowType.DataRow:



                Button data = new Button();

                data.Text = "click me";

                data.CommandName = "DeleteCommand";





                data.DataBinding += new EventHandler(data_DataBinding);



                container.Controls.Add(data);



                break;





            default:



                break;

        }

    }



    private void data_DataBinding(object sender, EventArgs e) {

        Button l = (Button)sender;



        GridViewRow row = (GridViewRow)l.NamingContainer;



        l.Text = DataBinder.Eval(row.DataItem, columnName).ToString();

    }

}

...全文

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LEOlws 2010-07-06

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嗯，解决了，我之前在pageload中只是动态创建了栏，但是没有绑定数据，数据是在触发按钮之后才绑定的，可能正因这些，我在之后刷新页面时，所有的内容都不见了
我现在Pageload中加上Grid的DataBind事件，问题就得到了解决。只不过查询条件是1<>1 这也是业务要求这样，首之进来不显示数据。
感谢楼上二位