如何事件添加到asp.net的GridView的按钮 [英] How to add events to buttons of GridView in asp.net
问题描述
我在asp.net一个搜索页面，用户搜索一本书，结果在一个gridview列。我添加了一个按钮，每一个GridView的结果列的权利，我想将事件添加到这些按钮，例如，当用户点击按钮，这本书借出。下面是它的截图：
I have a search page in asp.net, user searches a book and results are listed in a gridview. I added a button to the right of each gridview result column, and i want to add an event to these buttons, for example, when user clicks the button, that book is loaned. Here is a screenshot of it:
下面是我的code：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SearchResults.aspx.cs" Inherits="Pages_SearchResults" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataKeyNames="ISBN" DataSourceID="SqlDataSource1"
onselectedindexchanged="GridView1_SelectedIndexChanged">
<Columns>
<asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
<asp:BoundField DataField="ISBN" HeaderText="ISBN" ReadOnly="True"
SortExpression="ISBN" />
<asp:BoundField DataField="AuthorName" HeaderText="Author Name"
SortExpression="AuthorName" />
<asp:BoundField DataField="AuthorlName" HeaderText="Author Last Name"
SortExpression="AuthorlName" />
<asp:BoundField DataField="ItemType" HeaderText="Item Type"
SortExpression="ItemType" />
<asp:BoundField DataField="PublishYear" HeaderText="Publish Year"
SortExpression="PublishYear" />
<asp:ButtonField ButtonType="Button" CommandName="LoanItem" Text="Loan Item" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT * FROM [Items] WHERE ([Title] LIKE '%' + @Title + '%')">
<SelectParameters>
<asp:FormParameter FormField="tSearchBox" Name="Title" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
</form>
</body>
</html>
这是此页的SearchResult的.cs文件：
And here is the .cs file of this SearchResults page:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Pages_SearchResults : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
我添加的按钮类似如下：点击ButtonField字段
I added the buttons like the following: Clicked on BUttonField
我的问题是，我怎么能一个事件添加到这些贷款项目按钮？我读这链接 http://msdn.microsoft.com/en-us/library /bb498195.aspx 但它并没有真正告诉事件处理程序是如何加入。我AP preciate任何帮助。谢谢
My question is, how can i add an event to those "Loan Item" buttons? I read this link http://msdn.microsoft.com/en-us/library/bb498195.aspx but it does not really tell how the event handler is added. I appreciate any help. Thanks
推荐答案
我会做什么，以及我想你的榜样链接是干什么的，是添加RowCommand事件到GridView。
What I would do, and what I think your example link is doing, is adding the RowCommand event to the GridView.
当你点击一个按钮时，RowCommand事件将被解雇，而的CommandName和CommandArgument（这将是标识与单击按钮相关的行/记录的ID）的按钮被传递到事件处理程序
When you click a button, the RowCommand event will be fired, and the CommandName and CommandArgument (which would be an ID that identifies the row/record associated with the button that was clicked) for the button are passed to the event handler.
要创建的处理程序，看到我的评论如下，或做手工。在您的网格：
To create the handler, see my comment below, or do it manually. In your grid:
OnRowCommand =Grid_RowCommand
而在你的codebehind：
And in your codebehind:
protected void Grid_RowCommand(object sender, GridViewCommandEventArgs e)
{
}
会议将决定该处理程序的名称应为[控件ID] _ [事件名称]所以在我的例子，我的网格的ID只是电网
Convention would dictate that the name of the handler should be [ControlID]_[EventName] so in my example, the ID of my grid is simply Grid
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