Atlas SortBehavior实现客户端排序
【IT168 技术文档】
为您的列表添加排序功能将是非常酷的。一些ASP.NET服务器控件,例如DataGrid,GridView等已经拥有了内建的排序功能。Atlas同样提供了Sys.UI.Data.SortBehavior Behavior(有关Atlas Behavior,请参考:在ASP.NET Atlas中创建自定义的Behavior),让您在客户端即可实现排序功能。
SortBehavior将与DataView控件(请参考:Atlas命名空间Sys.Data下控件介绍——DataView和DataFilter)配合工作,它将通过设定DataView控件的sortDirection属性来实现排序功能。SortBehavior对象有如下属性:
1,dataView:对某个DataView对象的引用,这个SortBehavior将把页面的排序操作应用到其上。您应该总是指定这个属性。
2,sortColumn:DataView中某一列的列名,SortBehavior将根据这个列中的内容来进行排序。您应该总是指定这个属性。
3,sortAscendingCssClass:触发排序的控件的CSS Class(升序时)。
4,sortDescendingCssClass:触发排序的控件的CSS Class(降序时)。
介绍到此为止,我们来看如下的示例程序。
首先我们需要暴露一个Web Service以便Atlas页面使用。该Web Service将返回5个名人(除了我)的简介。下面为代码:
//Data Service
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Web;
using System.Web.Caching;
using System.Web.Services;
using System.Web.Services.Protocols;
using Microsoft.Web.Services;
![]()
//
// For simplicity this example demonstraes storing and manipulating
// the data objects in memory. A database can also be used.
//
![]()
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class SampleDataService : DataService
...{
static List<Entry> _data;
static int _nextId;
static object _dataLock = new object();
![]()
private static List<Entry> Data
...{
get
...{
if (_data == null)
...{
lock (_dataLock)
...{
if (_data == null)
...{
_data = new List<Entry>();
_data.Add(new Entry(0, "Dflying Chen", "A small piece of cake"));
_data.Add(new Entry(1, "Bill Gates", "Chairman & Chief Software Architect"));
_data.Add(new Entry(2, "Scott Guthrie", "General Manager"));
_data.Add(new Entry(3, "Ray Ozzie", "CTO"));
_data.Add(new Entry(4, "Steve Ballmer", "CEO"));
_nextId = 3;
}
}
}
return _data;
}
}
![]()
[DataObjectMethod(DataObjectMethodType.Delete)]
public void DeleteRow(int id)
...{
foreach (Entry row in _data)
...{
if (row.Id == id)
...{
lock (_dataLock)
...{
_data.Remove(row);
}
break;
}
}
}
![]()
[DataObjectMethod(DataObjectMethodType.Select)]
public Entry[] SelectRows()
...{
return SampleDataService.Data.ToArray();
}
![]()
[DataObjectMethod(DataObjectMethodType.Insert)]
public Entry InsertRow(string name, string description)
...{
Entry newRow;
lock (_dataLock)
...{
newRow = new Entry(_nextId++, name, description);
_data.Add(newRow);
}
return newRow;
}
![]()
[DataObjectMethod(DataObjectMethodType.Update)]
public void UpdateRow(Entry updateRow)
...{
foreach (Entry row in _data)
...{
if (row.Id == updateRow.Id)
...{
row.Name = updateRow.Name;
row.Title = updateRow.Title;
break;
}
}
}
}
![]()
public class Entry
...{
private string _name;
private string _title;
private int _id;
![]()
[DataObjectField(true, true)]
public int Id
...{
get ...{ return _id; }
set ...{ _id = value; }
}
![]()
[DataObjectField(false)]
[DefaultValue("New row")]
public string Name
...{
get ...{ return _name; }
set ...{ _name = value; }
}
![]()
[DataObjectField(false)]
[DefaultValue("")]
public string Title
...{
get ...{ return _title; }
set ...{ _title = value; }
}
![]()
public Entry()
...{
_id = -1;
}
![]()
public Entry(int id, string name, string description)
...{
_id = id;
_name = name;
_title = description;
}
}
0
相关文章
