GridView中妙用LinkButton
分類： asp.net
2007-06-13 18:58 2167人閱讀 評論(2) 收藏 舉報
說明：近來看到不少人想在DataGrid、GridView 使用比較靈活的方式來編輯、查看、刪除其中的數據選項（當然它們本身也內置了這些功能），卻苦于找不到比較好的辦法，本人結合實際代碼說明一下如何使用LinkButton來實現上述功能。
--------------------------------------------GridViewLinkButton.aspx---------------------------------------------------------------
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewLinkButton.aspx.cs" Inherits="GridViewLinkButton" %>
<!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>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvPersonList" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="Id" HeaderText="編號" />
<asp:BoundField DataField="Name" HeaderText="姓名" />
<asp:TemplateField HeaderText="性別">
<ItemTemplate>
<%# Eval("Sex").ToString()=="true"?"男":"女" %>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Age" HeaderText="年齡" />
<asp:TemplateField HeaderText="婚否">
<ItemTemplate>
<%# Boolean.Parse(Eval("Married").ToString())==true?"是":"否" %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="婚否">
<ItemTemplate>
<asp:LinkButton CommandArgument='<%# Eval("Id") %>' Enabled='<%# Boolean.Parse(Eval("Married").ToString())==true?false:true %>' Text="設為結婚" runat="server" OnCommand="SetMarried"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
--------------------------------------GridViewLinkButton.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 GridViewLinkButton : System.Web.UI.Page
{
private string firstName = "趙錢孫李周吳鄭王馮陳諸衛蔣沈韓楊朱秦尤許何呂施張孔曹嚴華";
private string lastName="猛勇剛強豹彪雁燕蓉菲";
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindGridView();
}
}
private void BindGridView()
{
DataTable myData = CreateDataTable();
Session["MyData"] = myData;
gvPersonList.DataSource = myData;
gvPersonList.DataBind();
}
//手動生成DataTable
private DataTable CreateDataTable()
{
DataTable data = new DataTable();
DataColumn dcId = new DataColumn("ID", typeof(Int32));
dcId.AutoIncrement = true;
dcId.AutoIncrementSeed = 1;
dcId.AutoIncrementStep = 1;
data.Columns.Add(dcId);
data.Columns.Add(new DataColumn("Name",typeof(string)));
data.Columns.Add(new DataColumn("Age",typeof(int)));
data.Columns.Add(new DataColumn("Sex",typeof(bool)));
data.Columns.Add(new DataColumn("Married",typeof(bool)));
DataRow dataRow = null;
Random random = new Random();
for (int i = 0; i < 20; i++)
{
dataRow = data.NewRow();
//隨機生成姓名
dataRow["Name"] = firstName.Substring(random.Next(firstName.Length), 1) + lastName.Substring(random.Next(lastName.Length), 1);
//隨即生成介于20至100之間的年齡
int age = random.Next(20, 100);
dataRow["Age"] = age;
//隨即設置性別
bool sex = (random.Next(100) % 2 == 0) ? true : false;
dataRow["Sex"] = sex;
if (((sex == true) && (age >= 22)) || ((sex == false) && (age >= 20)))//男性結婚年齡大于22周歲，女性結婚年齡大于20周歲
{
dataRow["Married"] = (random.Next(500) % 2 == 0) ? true : false;
}
else
{
dataRow["Married"] = false;
}
data.Rows.Add(dataRow);
}
return data;
}
//LinkButton的OnCommand事件的處理方法
public void SetMarried(Object sender, CommandEventArgs e)
{
e.CommandArgument.ToString();
DataTable data = Session["MyData"] as DataTable;
for (int i = 0; i < data.Rows.Count; i++)
{
if (data.Rows[i]["Id"].ToString() == e.CommandArgument.ToString())
{
data.Rows[i]["Married"] = true;
break;
}
}
gvPersonList.DataSource = data;
gvPersonList.DataBind();
}
}
-----------------------------------運行結果-----------------------------------------------------------------
可以看見，一旦某個人是已婚，則不能再設置為已婚狀態了。
下圖是將某些未婚人士設置成已婚后的截圖。