首页 / 网页编程 / ASP.NET / MVC使用T4模板生成其他类的具体实现学习笔记2

在前篇中我们已经将User类中的代码做了具体的实现，但仍然有多个实体类未实现，以后可能还会增加新的数据表，数据表结构也有可能发生变化，所以我们使用T4模板来完成类的生成，这样就算数据库表发生了改变，也会自动根据改变后的实体对类进行重新生成。
下面是数据访问层的T4模板文件 Dal.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;//EF实体文件在项目中的路径string inputFile = @"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#><#//这里为命名空间部分，手动更改为相应的命名空间 #>using PMS.IDAL;using PMS.Model;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.DAL{<#// Emit Entity Typesforeach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{//fileManager.StartNewFile（entity.Name + "RepositoryExt.cs"）;//BeginNamespace（namespaceName, code）;#>public partial class <#=entity.Name#>Dal :BaseDal<<#=entity.Name#>>,I<#=entity.Name#>Dal{}<#}#>}

我们将EF实体文件路径、命名空间更改为对应的值时，Ctrl+S保存，即可生成对应的其他类型的数据访问类
其他层中也大同小异，只需要做对应的更改即可，下面我将提供相应的代码
IDAL层
IDal.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;string inputFile = @"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#>using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using PMS.Model;namespace PMS.IDAL{<#// Emit Entity Typesforeach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{//fileManager.StartNewFile（entity.Name + "RepositoryExt.cs"）;//BeginNamespace（namespaceName, code）;#>public partial interface I<#=entity.Name#>Dal :IBaseDal<<#=entity.Name#>>{ }<#}#>}

IDbSession.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;string inputFile = @"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#>using System;using System.Collections.Generic;using System.Data.Entity;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.IDAL{public partial interface IDbSession{<#// Emit Entity Typesforeach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{//fileManager.StartNewFile（entity.Name + "RepositoryExt.cs"）;//BeginNamespace（namespaceName, code）;#>I<#=entity.Name#>Dal <#=entity.Name#>Dal{get;set;}<#}#>}}

DALFactory层
SimpleDalFactory.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;string inputFile =@"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#>using SW.OA.IDAL;using System;using System.Collections.Generic;using System.Configuration;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace SW.OA.DALFactory{public partial class AbstractFactory{ <#foreach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{#>public static I<#=entity.Name#>Dal Create<#=entity.Name#>Dal（）{ string fullClassName = NameSpace + ".<#=entity.Name#>Dal"; return CreateInstance（fullClassName） as I<#=entity.Name#>Dal;}<#}#>}}

DbSession.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;string inputFile = @"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#>using PMS.DAL;using PMS.IDAL;using PMS.Model;using System;using System.Collections.Generic;using System.Data.Entity;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.DALFactory{public partial class DBSession : IDBSession{<#// Emit Entity Typesforeach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{//fileManager.StartNewFile（entity.Name + "RepositoryExt.cs"）;//BeginNamespace（namespaceName, code）;#>private I<#=entity.Name#>Dal _<#=entity.Name#>Dal;public I<#=entity.Name#>Dal <#=entity.Name#>Dal{get{if（_<#=entity.Name#>Dal == null）{_<#=entity.Name#>Dal = AbstractFactory.Create<#=entity.Name#>Dal（）;}return _<#=entity.Name#>Dal;}set { _<#=entity.Name#>Dal = value; }}<#}#>}}

BLL层
Service.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;string inputFile = @"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#>using PMS.IBLL;using PMS.Model;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.BLL{<#// Emit Entity Typesforeach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{//fileManager.StartNewFile（entity.Name + "RepositoryExt.cs"）;//BeginNamespace（namespaceName, code）;#>public partial class <#=entity.Name#>Service :BaseService<<#=entity.Name#>>,I<#=entity.Name#>Service{ public override void SetCurrentDal（）{CurrentDal = this.CurrentDbSession.<#=entity.Name#>Dal;}}<#}#>}

BLL层
IService.tt

<#@ template language="C#" debug="false" hostspecific="true"#><#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#> <#CodeGenerationTools code = new CodeGenerationTools（this）;MetadataLoader loader = new MetadataLoader（this）;CodeRegion region = new CodeRegion（this, 1）;MetadataTools ef = new MetadataTools（this）;string inputFile = @"..\PMS.Model\PMS.edmx";EdmItemCollection ItemCollection = loader.CreateEdmItemCollection（inputFile）;string namespaceName = code.VsNamespaceSuggestion（）;EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create（this）;#>using PMS.Model;using PMS.Model.Search;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PMS.IBLL{<#// Emit Entity Typesforeach （EntityType entity in ItemCollection.GetItems<EntityType>（）.OrderBy（e => e.Name））{//fileManager.StartNewFile（entity.Name + "RepositoryExt.cs"）;//BeginNamespace（namespaceName, code）;#>public partial interface I<#=entity.Name#>Service : IBaseService<<#=entity.Name#>>{}<#}#>}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。