使用LINQ TO SQL类连接数据库。
create database mydb
go
use mydb
go
CREATE TABLE [dbo].[ChinaStates] (
[AreaCode] varchar(20) COLLATE Chinese_PRC_CI_AS NOT NULL,
[AreaName] nvarchar(20) COLLATE Chinese_PRC_CI_AS NOT NULL,
[ParentAreaCode] varchar(20) COLLATE Chinese_PRC_CI_AS NOT NULL,
[Root] bit NOT NULL,
[Zone] smallint NOT NULL,
[NavigateURL] varchar(100) COLLATE Chinese_PRC_CI_AS,
CONSTRAINT [PK_TB_Area] PRIMARY KEY CLUSTERED ([AreaCode])
)
ON [PRIMARY]
编辑页面
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body style="height: 136px">
<form id="form1" runat="server">
<div> <asp:Button ID="Button1" runat="server" Text="在此级别添加地区" Width="120px" OnClick="Button1_Click" />
<asp:Button ID="Button2" runat="server" Text="返回上级" OnClick="Button2_Click" /> </div>
<asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand">
<HeaderTemplate>
<table>
<tr>
<td>地名</td> <td>编号</td> <td>上一级</td>
<td>管理</td>
<td>删除</td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<%#Eval("AreaName") %>
</td>
<td>
<%#Eval("AreaCode") %>
</td>
<td>
<%#Eval("ParentAreaCode") %>
</td>
<td>
<asp:LinkButton ID="linkbutton1" CommandArgument='<%#Eval("AreaCode") %>' CommandName="Showxiaji" runat="server">下级地区</asp:LinkButton>
</td>
<td>
<asp:LinkButton ID="linkbutton2" CommandArgument='<%#Eval("AreaCode") %>' OnClientClick='return confirm("确定删除吗？")' CommandName="delete" runat="server">删除</asp:LinkButton>
</td> </tr>
</ItemTemplate>
<FooterTemplate>
</table> </FooterTemplate>
</asp:Repeater> <asp:Button ID="Button5" runat="server" Text="Button" />
<asp:Literal ID="Literal1" runat="server"></asp:Literal>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:Literal ID="Literal2" runat="server"></asp:Literal> <asp:Panel ID="Panel1" runat="server" Visible="False"> <p>
<asp:Label ID="Label1" runat="server" Text="请输入地区："></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</p>
<p>
<asp:Label ID="Label2" runat="server" Text="请输入邮编："></asp:Label>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</p>
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="添加" />
<asp:Button ID="Button4" runat="server" Text="取消" OnClick="Button4_Click" /> </asp:Panel>
</form> </body>
</html>
编写cs
public DataClassesDataContext context;
public List<ChinaStates> chinastates;
protected void Page_Load(object sender, EventArgs e)
{
context = new DataClassesDataContext();
if (!IsPostBack)
{
binddata("0001"); } }
//根据parentcode查
private void binddata(string parentcode)
{
var querydata = from q in context.ChinaStates
where q.ParentAreaCode == parentcode
select q;
Repeater1.DataSource = querydata;
Repeater1.DataBind();
Literal2.Text = parentcode;//显示ParentAreaCode }
protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
{
//删除
if(e.CommandName=="delete")
{
string code = e.CommandArgument.ToString();//获取这一及编号
ChinaStates cstates = context.ChinaStates.Single(r=>r.AreaCode==code);//获取对应地区编号的数据
context.ChinaStates.DeleteOnSubmit(cstates);//删除
context.SubmitChanges();
binddata(cstates.ParentAreaCode);//显示删除后的数据 }
//显示下级
if(e.CommandName=="Showxiaji")
{
string code = e.CommandArgument.ToString();//获取这一级的唯一AreaCode
ChinaStates cstates = context.ChinaStates.Single(r => r.AreaCode == code);
Literal1.Text = cstates.ParentAreaCode;//存储这级的ParentAreaCode
binddata(code);//显示，下一级ParentCode是这级的AreaCode }
}
//添加地区
protected void Button3_Click(object sender, EventArgs e)
{ ChinaStates cdata = new ChinaStates()
{
AreaCode=DateTime.Now.Millisecond.ToString(),
AreaName=TextBox1.Text,
ParentAreaCode=Literal2.Text };
try
{
context.ChinaStates.InsertOnSubmit(cdata);
context.SubmitChanges();
binddata(Literal2.Text);
Response.Write("<script>alter('添加成功!')</script>");
}
catch(Exception ex)
{
Response.Write("<script>alter('添加失败!')</script>"); }
}
protected void Button1_Click(object sender, EventArgs e)
{
Panel1.Visible = true;
}
//返回上级
protected void Button2_Click(object sender, EventArgs e)
{
if (Literal1.Text != "0000" && Literal1.Text.Length > 0)
{
binddata(Literal1.Text);//显示上一级，ParentAreaCode
ChinaStates cdata = context.ChinaStates.Single(r=>r.AreaCode==Literal1.Text);
Literal1.Text = cdata.ParentAreaCode;
}
} }