CSLA.Net 3.0.5 项目管理示例 只读集合基类（ResourceList.cs，ResourceInfo.cs）

//3.0一?致?
using System;
using System.Data;
using System.Data.SqlClient;
using Csla;
using Csla.Data;

namespace ProjectTracker.Library
{
/// <summary>
/// 集?成?自?ReadOnlyListBase基?类?，?提?供?了?两?个?泛?型?参?数?，?一?个?是?业?务?对?象?本?身?，?另?一?个?是?子?对?象?类?型?
/// 提?供?对?只?读?列?表?显?示?的?支?持?（?）?
/// </summary>
[Serializable()]
public class ResourceList : ReadOnlyListBase<ResourceList, ResourceInfo>
{
#region Factory Methods

/// <summary>
/// CriTeria参?数?由?于?没?有?参?数?要?传?递?，?所?以?默?认?构?造?，?保?留?Fetch的?方?法?签?名?不?变?，?
/// </summary>
/// <returns></returns>
public static ResourceList GetResourceList()
{
return DataPortal.Fetch<ResourceList>(new Criteria());
}

/// <summary>
/// 私?有?构?造?器?
/// </summary>
private ResourceList()
{ /* require use of factory methods */ }

#endregion

#region Data Access

/// <summary>
/// 标?准?类?
/// </summary>
[Serializable()]
private class Criteria
{ /* no criteria - retrieve all resources */ }

private void DataPortal_Fetch(Criteria criteria)
{
this.RaiseListChangedEvents = false;
using (SqlConnection cn = new SqlConnection(Database.PTrackerConnection))
{
cn.Open();
using (SqlCommand cm = cn.CreateCommand())
{
cm.CommandType = CommandType.StoredProcedure;
cm.CommandText = "getResources";

using (SafeDataReader dr = new SafeDataReader(cm.ExecuteReader()))
{
IsReadOnly = false;
while (dr.Read())
{
//调?用?子?类?的?构?造?并?添?加?到?此?业?务?对?象?中?来?
ResourceInfo info = new ResourceInfo(dr);
this.Add(info);
}
IsReadOnly = true;
}
}
}
this.RaiseListChangedEvents = true;
}

#endregion

}
}

//3.0一?致?
using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using Csla;
using Csla.Data;

namespace ProjectTracker.Library
{
/// <summary>
/// 集?成?基?类?，?需?要?一?个?业?务?对?象?类?型?泛?型?参?数?（?）?
/// </summary>
[Serializable()]
public class ResourceInfo : ReadOnlyBase<ResourceInfo>
{
#region Business Methods

//-----------------------------
private int _id;
private string _name;

public int Id
{
get { return _id; }
}

public string Name
{
get { return _name; }
}
//-----------------------------
/// <summary>
/// 为?Object提?供?比?较?参?数?的?重?载?
/// </summary>
/// <returns></returns>
protected override object GetIdValue()
{
return _id;
}

/// <summary>
/// 从?在?Tostring，?返?回?名?称?
/// </summary>
/// <returns></returns>
public override string ToString()
{
return _name;
}

#endregion

#region Constructors 构?造?器?

/// <summary>
/// 默?认?构?造?器?
/// </summary>
private ResourceInfo()
{ /* require use of factory methods */ }

/// <summary>
/// 内?联?调?用?，?构?造?初?始?化?私?有?成?员?
/// </summary>
/// <param name="dr"></param>
internal ResourceInfo(SafeDataReader dr)
{
_id = dr.GetInt32("Id");
_name = string.Format("{0}, {1}", dr.GetString("LastName"), dr.GetString("FirstName"));
}

#endregion
}
}