如何将字符串参数传递给T4模板 [英] How do I pass a string parameter to a t4 template

问题描述

我正在尝试找到一种将普通字符串作为参数传递给文本模板的方法.

Hi I am trying to find a way to pass a normal string as a parameter to a text template.

这是我的模板代码，如果有人可以告诉我我需要用c#编写以传递参数并创建类文件的内容.谢谢.那会很有帮助.

This is my Template code, if someone could tell me what I would need to write in c# to pass my parameters and create the class file. That would be very helpful, Thanks.

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Xml" #>
<#@ assembly name="EnvDTE" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ parameter name="namespacename" type="System.String" #>
<#@ parameter name="classname" type="System.String" #>
<#
this.OutputInfo.File(this.classname);
#>
namespace <#= this.namespacename #>
{
    using System;
    using System.Collections.Generic; 
    using System.Linq; 
    using System.Xml; 

    /// <summary>
    /// This class describes the data layer related to <#= this.classname #>.
    /// </summary>
    /// <history>
    ///   <change author=`Auto Generated` date=<#= DateTime.Now.ToString("dd/MM/yyyy") #>>Original Version</change>
    /// </history>
    public partial class <#= this.classname #> : DataObject
    {
        #region constructor

        /// <summary>
        /// A constructor which allows the base constructor to attempt to extract the connection string from the config file.
        /// </summary>
        public <#= this.classname #>() : base() {}

        /// <summary>
        /// A constructor which delegates to the base constructor to enable use of connection string.
        /// </summary>
        /// <param name='connectionstring`></param>
        public <#= this.classname #>(string connectionstring) : base(connectionstring) {}

        #endregion
    }
}

推荐答案

以下是传递参数的一种方法:

The following is one way to pass parameters:

1. 您必须创建TextTemplatingSession.
2. 设置参数的会话字典.
3. 使用该会话处理模板.

示例代码(将ResolvePath替换为tt文件的位置):

Sample code (Replace the ResolvePath with the location of your tt file):

<#@ template debug="true" hostspecific="true" language="C#" #>
<#@ output extension=".txt" #>
<#@ import namespace="System.IO" #>
<#@ import namespace="Microsoft.VisualStudio.TextTemplating" #>
<# 
string templateFile = this.Host.ResolvePath("ClassGeneration.tt");
string templateContent = File.ReadAllText(templateFile);

TextTemplatingSession session = new TextTemplatingSession();
session["namespacename"] = "MyNamespace1";
session["classname"] = "MyClassName";

var sessionHost = (ITextTemplatingSessionHost) this.Host;
sessionHost.Session = session;

Engine engine = new Engine();
string generatedContent = engine.ProcessTemplate(templateContent, this.Host);

this.Write(generatedContent);  #>

我在Oleg Sych的博客上看到了示例是t4的绝佳资源.这是更新的链接:

I saw this example on Oleg Sych's blog, which is great resource for t4. Here is the updated link: https://web.archive.org/web/20160706191316/http://www.olegsych.com/2010/05/t4-parameter-directive

这篇关于如何将字符串参数传递给T4模板的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！