GridView动态添加模板列

1、首先添加一个模板类

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace NSDPWeb.DbAccess.Introduction{    //动态添加模版类    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();                    }                }            }        }    }  }

2、前台

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

</asp:GridView>

3、后台

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;
using NSDPWeb.DbAccess.Introduction;
using DataAccess;

namespace NSDPWeb.Pages.Introduction
{
public partial class WebForm2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
DataTable table =BaseDb.RunProcedureForQuery("IntroSelectAll", null).Tables[0];
GridView1.DataSource = table;
GridView1.DataBind();
}
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", "姓名");
gvt.eh += new GridViewTemplate.EventHandler(lbtn_Click);
customField.ItemTemplate = gvt;
GridView1.Columns.Add(customField);
base.OnInit(e);
}
public void lbtn_Click(object sender, EventArgs e)
{
ClientScript.RegisterStartupScript(GetType(), "test", "alert('ok');", true);
//Response.Redirect(String.Format("~/Pages/Introduction/IntroStudentDetail.aspx?numberid={0}&category={1}", Eval("编号"), Eval("类别")));
}
}
}