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 types

foreach (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 types

foreach (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 types

foreach (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 types

foreach (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 types

foreach (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 types

foreach (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。