T4 模板中的继承

Question

I'm trying to create a base class for all my .tt files so that I don't have to duplicate my code, but I can't figure out how to get it to work properly.

As far as I know, inheritance in .tt files must be done from precompiled code, so I have created another project so it gets compiled before my tt project does. I have tried so many things with no result.

This is my base class BaseClass.cs :

public class BaseClass
{
    public virtual void SaveFiles(string[] filePaths)
    {
        //Do something
    }
}

And this might be one of the classes I want to inherit from BaseClass :

<#@ include file="IdentificableDomainEntityTemplate.tt" #>
<#@ import namespace="System.IO" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ template language="C#" inherits="BaseClass" #>

<#+
public class IdentificableDomainEntitiesGenerator : BaseClass
{
   public string AssemblyFile {get; set;}
   public string AgentNamespace {get; set;}
   public string Namespace {get; set;}
   public string EntityName {get; set;}
   public List<string> EntitiesToGenerate;
   public List<string> ReferencesToGenerate;
   public Dictionary<string, List<string>> EntityExceptionsProperties;
   public string OutputFolder{get;set;}
   public string AddToProject{get;set;}  

   public void RunCore()
   {
    this.SaveFiles(null);       
   }
}#>

Like I said, I've created another project so it gets compiled but I don't really know what else to try in order to inherit from BaseClass in my .tt files.

Answer 1

You need to include a reference to the assembly containing the BaseClass class in the T4 template as follows:

<#@ assembly name="AssemblyName.dll" #>

where "AssemblyName.dll" is the name of the assembly containing the BaseClass class. You will need to either provide the full path to the DLL, or you can use Visual Studio macros such as $(ProjectDir) .