GridView动态添加模板列

GridView动态添加模板列 这个case 经常会遇到，网上相关资料也不少，

但是关于如何动态为添加在模板列中的控件添加事件却没有。本文就是为解决这种情况而写。

代码如下:

GridViewTemplateDemo.aspx

 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewTemplateDemo.aspx.cs" Inherits="GridView_GridViewTemplateDemo" %> <!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 id="Head1" runat="server"> <title>GridView动态添加模板列的例子</title> </head> <body> <form id="form1" runat="server"> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"> </asp:GridView> </form> </body> </html> 

GridViewTemplateDemo.aspx.cs

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 GridView_GridViewTemplateDemo : System.Web.UI.Page { private DataTable getDateTable() { DataTable dt = new DataTable(); dt.Columns.Add(new DataColumn("ID", typeof(Int32))); dt.Columns.Add(new DataColumn("Name", typeof(String))); DataRow dr = dt.NewRow(); dr[0] = 1; dr[1] = "01"; dt.Rows.Add(dr); dr = dt.NewRow(); dr[0] = 2; dr[1] = "01011"; dt.Rows.Add(dr); dr = dt.NewRow(); dr[0] = 3; dr[1] = "0120"; dt.Rows.Add(dr); dr = dt.NewRow(); dr[0] = 4; dr[1] = "01001"; dt.Rows.Add(dr); dr = dt.NewRow(); dr[0] = 5; dr[1] = "0105"; dt.Rows.Add(dr); return dt; } protected override void OnInit(EventArgs e) { TemplateField customField = new TemplateField(); customField.ShowHeader = true; customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "动态添加列"); GridViewTemplate gvt = new GridViewTemplate(DataControlRowType.DataRow, "lbtn", "Name"); gvt.eh += new GridViewTemplate.EventHandler(lbtn_Click); customField.ItemTemplate = gvt; GridView1.Columns.Add(customField); base.OnInit(e); } protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { GridView1.DataSource = getDateTable(); GridView1.DataBind(); } } public void lbtn_Click(object sender, EventArgs e) { ClientScript.RegisterStartupScript(GetType(), "test", "alert('ok');", true); } } public class GridViewTemplate : ITemplate { public delegate void EventHandler(object sender, EventArgs e); public event EventHandler eh; private DataControlRowType templateType; private string columnName; private string controlID; public GridViewTemplate(DataControlRowType type, string colname) { templateType = type; columnName = colname; } public GridViewTemplate(DataControlRowType type,string controlID, string colname) { templateType = type; this.controlID = controlID; columnName = colname; } public void InstantiateIn(System.Web.UI.Control container) { switch (templateType) { case DataControlRowType.Header: Literal lc = new Literal(); lc.Text = columnName; container.Controls.Add(lc); break; case DataControlRowType.DataRow: LinkButton lbtn = new LinkButton(); lbtn.ID = this.controlID; if (eh != null) { lbtn.Click += new System.EventHandler(eh); } lbtn.DataBinding+=new System.EventHandler(lbtn_DataBinding); container.Controls.Add(lbtn); break; default: break; } } void lbtn_DataBinding(object sender, EventArgs e) { LinkButton lbtn = sender as LinkButton; if (lbtn != null) { GridViewRow container = lbtn.NamingContainer as GridViewRow; if (container != null) { object dataValue = DataBinder.Eval(container.DataItem, columnName); if (dataValue != DBNull.Value) { lbtn.Text = dataValue.ToString(); } } } } }