Repeater 双向排序
2007-03-23 23:30 蓝之风 阅读(2868) 评论(6) 编辑 收藏 举报
做项目的时候，DataGrid ,DataList,Repeater 三个控件都是很优秀的数据显示控件，DataGrid的方便，简单易用，功能强大，但对性能会有所影响，在loading页面的时候大量的Html会占用一些时间，DataList 较之DataGrid功能显然减少一些，经常在一些特殊的页面制作或需求中来用,经常简单的页面显示收据表格，使用Repeater+Table即方便又快捷，但是却没有DataGrid那样方便，最近做项目，全部使用Repeater,但是客户突然要求要对数据表格进行排序，惨了~~~~~，第一印象就是DataGrid控件有排序功能，要换控件吗？靠，那么多表单，全部换DataGrid会出人命，于是就想办法，来实现Repeater的排序。下面就是我做的一个Repeater实现双向排序的例子：主要使用LinkButton，Repeater，ViewState,Cache结合来完成的。
效果如下图：
下载原代码：/Files/vaiyanzi/Attch/RepeaterOrder.rar
前台Html代码：
1
using System;
2using System.Collections;
3using System.ComponentModel;
4using System.Data;
5using System.Drawing;
6using System.Web;
7using System.Web.SessionState;
8using System.Web.UI;
9using System.Web.UI.WebControls;
10using System.Web.UI.HtmlControls;
11using System.Data.SqlClient;
12using System.Configuration;
13
14namespace RepeaterOrder
15{
16
/// <summary>
17
/// RepeaterOrderForm 的摘要说明。
18
/// </summary>
19 public class RepeaterOrderForm : System.Web.UI.Page
20 {
21 protected System.Web.UI.WebControls.Repeater rpOrder;
22 private readonly string CONNECTIONSTRING=ConfigurationSettings.AppSettings["ConnectionString"];
23 private void Page_Load(object sender, System.EventArgs e)
24 {
25 if(!IsPostBack)
26 {
27 BindRepeater();
28 }
29 }
30 private DataView GetData
31 {
32 get
33 {
34 return Cache["_data"] as DataView;
35 }
36 set
37 {
38 if( Cache["_data"]==null)
39 Cache["_data"]=value;
40 }
41 }
42
Web 窗体设计器生成的代码
64
65 private SqlConnection Conn()
66 {
67 return new SqlConnection(CONNECTIONSTRING);
68 }
69
70 private void BindRepeater()
71 {
72 DataSet ds=new DataSet();
73 SqlDataAdapter da=new SqlDataAdapter("Select * From Employees",Conn());
74 da.Fill(ds);
75 GetData=ds.Tables[0].DefaultView;
76 rpOrder.DataSource=ds.Tables[0];
77 rpOrder.DataBind();
78 }
79
80 private void rpOrder_ItemCommand(object source, RepeaterCommandEventArgs e)
81 {
82 if(e.Item.ItemType==ListItemType.Header)
83 {
84 LinkButton lkbtnSort=(LinkButton)e.Item.FindControl(e.CommandName.Trim());
85 if(ViewState[e.CommandName.Trim()]==null)
86 {
87 ViewState[e.CommandName.Trim()]="ASC";
88 lkbtnSort.Text=lkbtnSort.Text+"▲";
89 }
90 else
91 {
92 if(ViewState[e.CommandName.Trim()].ToString().Trim()=="ASC")
93 {
94 ViewState[e.CommandName.Trim()]="DESC";
95 if(lkbtnSort.Text.IndexOf("▲")!=-1)
96 lkbtnSort.Text=lkbtnSort.Text.Replace("▲","▼");
97 else
98 lkbtnSort.Text=lkbtnSort.Text+"▼";
99 }
100 else
101 {
102 ViewState[e.CommandName.Trim()]="ASC";
103 if(lkbtnSort.Text.IndexOf("▼")!=-1)
104 lkbtnSort.Text=lkbtnSort.Text.Trim().Replace("▼","▲");
105 else
106 lkbtnSort.Text=lkbtnSort.Text+"▲";
107 }
108 }
109 ViewState["text"]=lkbtnSort.Text;
110 ViewState["id"]=e.CommandName.Trim();
111 DataView dv=GetData;
112 dv.Sort=e.CommandName.ToString().Trim()+" "+ViewState[e.CommandName.Trim()].ToString().Trim();
113 rpOrder.DataSource=dv;
114 rpOrder.DataBind();
115 }
116 }
117
118 private void rpOrder_ItemDataBound(object sender, RepeaterItemEventArgs e)
119 {
120 if(e.Item.ItemType==ListItemType.Header)
121 {
122 if(ViewState["id"]!=null)
123 {
124 LinkButton lkbtnSort=(LinkButton)e.Item.FindControl(ViewState["id"].ToString().Trim());
125 lkbtnSort.Text=ViewState["text"].ToString();
126 }
127 }
128 }
129 }
130
}
131
效果如下图：
下载原代码：/Files/vaiyanzi/Attch/RepeaterOrder.rar
前台Html代码：
<%@ Page language="c#" Codebehind="RepeaterOrderForm.aspx.cs" AutoEventWireup="false" Inherits="RepeaterOrder.RepeaterOrderForm" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>RepeaterOrderForm</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 MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<table border=1 bordercolor=#330033 bordercolordark=#999933 bordercolorlight=black>
<tr>
<td colspan=5 align=center><font color=blue size=12>Repeater实现双向排序功能</font></td>
</tr>
<asp:Repeater id="rpOrder" runat="server">
<HeaderTemplate>
<tr align=center >
<td>
<asp:LinkButton ID="LastName" Runat="server" text="LastName" CommandName="LastName"></asp:LinkButton></td>
<td>
<asp:LinkButton ID="FirstName" Runat="server" text="FirstName" CommandName="FirstName"></asp:LinkButton></td>
<td>
<asp:LinkButton ID="Title" Runat="server" text="Title" CommandName="Title"></asp:LinkButton></td>
<td>
<asp:LinkButton ID="Address" Runat="server" text="Address" CommandName="Address"></asp:LinkButton></td>
<td>
<asp:LinkButton ID="City" Runat="server" text="City" CommandName="City"></asp:LinkButton></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><%# DataBinder.Eval(Container.DataItem,"LastName")%></td>
<td><%# DataBinder.Eval(Container.DataItem,"FirstName")%></td>
<td><%# DataBinder.Eval(Container.DataItem,"Title")%></td>
<td><%# DataBinder.Eval(Container.DataItem,"Address")%></td>
<td><%# DataBinder.Eval(Container.DataItem,"City")%></td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</form>
</body>
</HTML>
后台CS文件：<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <title>RepeaterOrderForm</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 MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <table border=1 bordercolor=#330033 bordercolordark=#999933 bordercolorlight=black> <tr> <td colspan=5 align=center><font color=blue size=12>Repeater实现双向排序功能</font></td> </tr> <asp:Repeater id="rpOrder" runat="server"> <HeaderTemplate> <tr align=center > <td> <asp:LinkButton ID="LastName" Runat="server" text="LastName" CommandName="LastName"></asp:LinkButton></td> <td> <asp:LinkButton ID="FirstName" Runat="server" text="FirstName" CommandName="FirstName"></asp:LinkButton></td> <td> <asp:LinkButton ID="Title" Runat="server" text="Title" CommandName="Title"></asp:LinkButton></td> <td> <asp:LinkButton ID="Address" Runat="server" text="Address" CommandName="Address"></asp:LinkButton></td> <td> <asp:LinkButton ID="City" Runat="server" text="City" CommandName="City"></asp:LinkButton></td> </tr> </HeaderTemplate> <ItemTemplate> <tr> <td><%# DataBinder.Eval(Container.DataItem,"LastName")%></td>
<td><%# DataBinder.Eval(Container.DataItem,"FirstName")%></td> <td><%# DataBinder.Eval(Container.DataItem,"Title")%></td> <td><%# DataBinder.Eval(Container.DataItem,"Address")%></td> <td><%# DataBinder.Eval(Container.DataItem,"City")%></td> </tr> </ItemTemplate> </asp:Repeater> </table> </form> </body></HTML>1
using System;2
using System.Collections;3
using System.ComponentModel;4
using System.Data;5
using System.Drawing;6
using System.Web;7
using System.Web.SessionState;8
using System.Web.UI;9
using System.Web.UI.WebControls;10
using System.Web.UI.HtmlControls;11
using System.Data.SqlClient;12
using System.Configuration;13
14
namespace RepeaterOrder15
{16
/// <summary>17
/// RepeaterOrderForm 的摘要说明。18
/// </summary>19
public class RepeaterOrderForm : System.Web.UI.Page20
{21
protected System.Web.UI.WebControls.Repeater rpOrder;22
private readonly string CONNECTIONSTRING=ConfigurationSettings.AppSettings["ConnectionString"];23
private void Page_Load(object sender, System.EventArgs e)24
{25
if(!IsPostBack)26
{27
BindRepeater();28
}29
}30
private DataView GetData31
{32
get33
{ 34
return Cache["_data"] as DataView;35
}36
set37
{38
if( Cache["_data"]==null)39
Cache["_data"]=value;40
}41
}42
Web 窗体设计器生成的代码64
65
private SqlConnection Conn()66
{67
return new SqlConnection(CONNECTIONSTRING);68
}69
70
private void BindRepeater()71
{72
DataSet ds=new DataSet();73
SqlDataAdapter da=new SqlDataAdapter("Select * From Employees",Conn());74
da.Fill(ds);75
GetData=ds.Tables[0].DefaultView;76
rpOrder.DataSource=ds.Tables[0];77
rpOrder.DataBind();78
}79
80
private void rpOrder_ItemCommand(object source, RepeaterCommandEventArgs e)81
{82
if(e.Item.ItemType==ListItemType.Header)83
{ 84
LinkButton lkbtnSort=(LinkButton)e.Item.FindControl(e.CommandName.Trim()); 85
if(ViewState[e.CommandName.Trim()]==null)86
{87
ViewState[e.CommandName.Trim()]="ASC"; 88
lkbtnSort.Text=lkbtnSort.Text+"▲";89
}90
else91
{92
if(ViewState[e.CommandName.Trim()].ToString().Trim()=="ASC")93
{94
ViewState[e.CommandName.Trim()]="DESC"; 95
if(lkbtnSort.Text.IndexOf("▲")!=-1)96
lkbtnSort.Text=lkbtnSort.Text.Replace("▲","▼");97
else98
lkbtnSort.Text=lkbtnSort.Text+"▼";99
}100
else101
{102
ViewState[e.CommandName.Trim()]="ASC"; 103
if(lkbtnSort.Text.IndexOf("▼")!=-1)104
lkbtnSort.Text=lkbtnSort.Text.Trim().Replace("▼","▲");105
else106
lkbtnSort.Text=lkbtnSort.Text+"▲";107
}108
}109
ViewState["text"]=lkbtnSort.Text;110
ViewState["id"]=e.CommandName.Trim();111
DataView dv=GetData;112
dv.Sort=e.CommandName.ToString().Trim()+" "+ViewState[e.CommandName.Trim()].ToString().Trim();113
rpOrder.DataSource=dv;114
rpOrder.DataBind();115
} 116
}117
118
private void rpOrder_ItemDataBound(object sender, RepeaterItemEventArgs e)119
{120
if(e.Item.ItemType==ListItemType.Header)121
{122
if(ViewState["id"]!=null)123
{ 124
LinkButton lkbtnSort=(LinkButton)e.Item.FindControl(ViewState["id"].ToString().Trim()); 125
lkbtnSort.Text=ViewState["text"].ToString();126
}127
}128
}129
}130
}131
作者：蓝之风
出处：http://www.cnblogs.com/vaiyanzi/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
