T4模板使用笔记

路径获取

① 获取当前解决方案路径

string solutionsPath = Host.ResolveAssemblyReference("$(SolutionDir)");  

② 获取当前项目路径

string projectPath = Host.ResolveAssemblyReference("$(ProjectDir)");  

一个简单的Demo

<#@ template debug="false" hostspecific="true" language="C#" #>  
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ import namespace="System.Reflection" #>
<#@ assembly name="$(SolutionDir)TestT4.CoreinDebugTestT4.Core.dll" #>
<#@ import namespace="TestT4.Core" #>
<#  
    string solutionsPath = Host.ResolveAssemblyReference("$(SolutionDir)");  
    string projectPath = Host.ResolveAssemblyReference("$(ProjectDir)");  
#>  

<#
AppDomainTypeFinder appDomainTypeFinder=new AppDomainTypeFinder();
            var assemblies = appDomainTypeFinder.GetAssemblies();
            IEnumerable<Type> types = new List<Type>();
            foreach (var assemblie in assemblies)
            {
                types = types.Concat(assemblie.GetTypes().
                Where(type => !String.IsNullOrEmpty(type.Namespace)).
                Where(type => type.BaseType != null &&type.BaseType == typeof(BaseEntity)));
            }

            foreach (var type in types)
            {
                var typenamespace = type.Namespace;
                if (!string.IsNullOrEmpty(typenamespace))
                {
                 var splitNamespace = typenamespace.Split('.');
                 if(splitNamespace.Length>0){
                 var fileFolder=projectPath+@""+splitNamespace[splitNamespace.Length-1];
                 if(!Directory.Exists(fileFolder))
                {
                    Directory.CreateDirectory(fileFolder);
                }
                string contractFileName= type.Name+"Map.cs";
                string filePath = Path.Combine(fileFolder,contractFileName);
                File.Delete(filePath);
                File.AppendAllText(filePath,type.Name+"123");
                 }
                }
            }
#>