iBATIS.NET 学习笔记(八)
在iBATIS.NET 学习笔记(五)中的DataGrid中加入删除功能，删除客户信息。
修改Maps/Customers.xml,在statements标记中加入下面代码：
<delete id="DeleteCustomer" parameterClass="string">
delete from Customers where CustomerID=#value#
</delete>
parameterClass是指传递进来的参数类型，这里的CustomerID 是varchar类型，所以采用string。
修改后的Test1.aspx
<%@ Page language="c#" Codebehind="Test1.aspx.cs" AutoEventWireup="false" Inherits="IbatisNet.Example.Test1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Test1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<asp:DataGrid id="dgList" runat="server" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px"
BackColor="White" CellPadding="3" GridLines="Horizontal" AllowPaging="True" AutoGenerateColumns="False"
DataKeyField="CustomerID">
<FooterStyle ForeColor="#4A3C8C" BackColor="#B5C7DE"></FooterStyle>
<SelectedItemStyle Font-Bold="True" ForeColor="#F7F7F7" BackColor="#738A9C"></SelectedItemStyle>
<AlternatingItemStyle BackColor="#F7F7F7"></AlternatingItemStyle>
<ItemStyle ForeColor="#4A3C8C" BackColor="#E7E7FF"></ItemStyle>
<HeaderStyle Font-Bold="True" ForeColor="#F7F7F7" BackColor="#4A3C8C"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="CustomerID" HeaderText="CustomerID"></asp:BoundColumn>
<asp:BoundColumn DataField="CompanyName" HeaderText="CompanyName"></asp:BoundColumn>
<asp:BoundColumn DataField="Address" HeaderText="Address"></asp:BoundColumn>
<asp:BoundColumn DataField="City" HeaderText="City"></asp:BoundColumn>
<asp:BoundColumn DataField="Phone" HeaderText="Phone"></asp:BoundColumn>
<asp:BoundColumn DataField="Fax" HeaderText="Fax"></asp:BoundColumn>
<asp:ButtonColumn Text="删除" CommandName="Delete"></asp:ButtonColumn>
</Columns>
<PagerStyle HorizontalAlign="Right" ForeColor="#4A3C8C" BackColor="#E7E7FF"></PagerStyle>
</asp:DataGrid>
</form>
</body>
</HTML>
修改后的Test1.aspx.cs
//***********************************************************
//*公司：
//*作者：YK
//*模块：Test1
//*功能：
//*创建日期：
//*修改日期：
//***********************************************************
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using IBatisNet.Common;
using IBatisNet.Common.Utilities;
using IBatisNet.DataMapper;
using IBatisNet.DataAccess;
namespace IbatisNet.Example
{
/// <summary>
/// Test1 的摘要说明。
/// </summary>
public class Test1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataGrid dgList;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!Page.IsPostBack)
{
this.GetData();
}
}
Web 窗体设计器生成的代码
private void GetData()
{
this.dgList.DataSource =IbatisNet.Example.Mapper.Instance().QueryForList("GetAllCustomers",null);
this.dgList.DataBind();
}
//翻页
private void dgList_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
this.dgList.CurrentPageIndex = e.NewPageIndex;
this.GetData();
}
//删除
private void dgList_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e) {
string customerID = this.dgList.DataKeys[e.Item.ItemIndex].ToString();
IbatisNet.Example.Mapper.Instance().Delete("DeleteCustomer",customerID);
if(this.dgList.CurrentPageIndex>0&&this.dgList.Items.Count==1) {
this.dgList.CurrentPageIndex = this.dgList.CurrentPageIndex -1;
}
this.GetData();
}
}
}
修改Maps/Customers.xml,在statements标记中加入下面代码：
<delete id="DeleteCustomer" parameterClass="string"> delete from Customers where CustomerID=#value# </delete>修改后的Test1.aspx
<%@ Page language="c#" Codebehind="Test1.aspx.cs" AutoEventWireup="false" Inherits="IbatisNet.Example.Test1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <title>Test1</title> <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"> <meta name="CODE_LANGUAGE" Content="C#"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> </HEAD> <body> <form id="Form1" method="post" runat="server"> <asp:DataGrid id="dgList" runat="server" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" BackColor="White" CellPadding="3" GridLines="Horizontal" AllowPaging="True" AutoGenerateColumns="False" DataKeyField="CustomerID"> <FooterStyle ForeColor="#4A3C8C" BackColor="#B5C7DE"></FooterStyle> <SelectedItemStyle Font-Bold="True" ForeColor="#F7F7F7" BackColor="#738A9C"></SelectedItemStyle> <AlternatingItemStyle BackColor="#F7F7F7"></AlternatingItemStyle> <ItemStyle ForeColor="#4A3C8C" BackColor="#E7E7FF"></ItemStyle> <HeaderStyle Font-Bold="True" ForeColor="#F7F7F7" BackColor="#4A3C8C"></HeaderStyle> <Columns> <asp:BoundColumn DataField="CustomerID" HeaderText="CustomerID"></asp:BoundColumn> <asp:BoundColumn DataField="CompanyName" HeaderText="CompanyName"></asp:BoundColumn> <asp:BoundColumn DataField="Address" HeaderText="Address"></asp:BoundColumn> <asp:BoundColumn DataField="City" HeaderText="City"></asp:BoundColumn> <asp:BoundColumn DataField="Phone" HeaderText="Phone"></asp:BoundColumn> <asp:BoundColumn DataField="Fax" HeaderText="Fax"></asp:BoundColumn> <asp:ButtonColumn Text="删除" CommandName="Delete"></asp:ButtonColumn> </Columns> <PagerStyle HorizontalAlign="Right" ForeColor="#4A3C8C" BackColor="#E7E7FF"></PagerStyle> </asp:DataGrid> </form> </body></HTML>修改后的Test1.aspx.cs
//***********************************************************//*公司：//*作者：YK//*模块：Test1//*功能：//*创建日期：//*修改日期：//***********************************************************using System;using System.Collections;using System.ComponentModel;using System.Data;using System.Drawing;using System.Web;using System.Web.SessionState;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.HtmlControls;using IBatisNet.Common;using IBatisNet.Common.Utilities;using IBatisNet.DataMapper;using IBatisNet.DataAccess;namespace IbatisNet.Example{ /// <summary> /// Test1 的摘要说明。 /// </summary> public class Test1 : System.Web.UI.Page { protected System.Web.UI.WebControls.DataGrid dgList; private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 if(!Page.IsPostBack) { this.GetData(); } } Web 窗体设计器生成的代码 private void GetData() { this.dgList.DataSource =IbatisNet.Example.Mapper.Instance().QueryForList("GetAllCustomers",null); this.dgList.DataBind(); } //翻页 private void dgList_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e) { this.dgList.CurrentPageIndex = e.NewPageIndex; this.GetData(); } //删除 private void dgList_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e) { string customerID = this.dgList.DataKeys[e.Item.ItemIndex].ToString(); IbatisNet.Example.Mapper.Instance().Delete("DeleteCustomer",customerID); if(this.dgList.CurrentPageIndex>0&&this.dgList.Items.Count==1) { this.dgList.CurrentPageIndex = this.dgList.CurrentPageIndex -1; } this.GetData(); } }}
