简单工厂示例

最新推荐文章于 2025-05-03 17:50:49 发布

原创最新推荐文章于 2025-05-03 17:50:49 发布 · 240 阅读

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本文介绍了一种使用构建模式来生成特定类型代码的方法。通过定义IBuilder接口及其实现类BuilderDAL，实现了代码的模块化构建。此外，通过BuilderFactory提供了一个创建不同构建实例的静态方法CreateDALBuilder，该方法利用反射加载指定路径下的类型并创建实例。

using System; using System.Reflection; namespace Cn.CodeMarks.Builder { /// <summary> /// Builder接口 /// </summary> public interface IBuilder { string GetCode(); } /// <summary> /// Builder具体实现 /// </summary> public class BuilderDAL : IBuilder { #region IBuilder 成员 public string GetCode() { return "builderDAL"; } #endregion } /// <summary> /// 生成工厂 /// </summary> public class BuilderFactory { public static IBuilder CreateDALBuilder() { IBuilder ret = null; try { string path = System.Configuration.ConfigurationManager.AppSettings["DAL"].ToString(); string typeName = System.Configuration.ConfigurationManager.AppSettings["type"].ToString(); ret = Assembly.LoadFile(path).CreateInstance(typeName) as IBuilder; } catch (Exception ex) { throw new Exception(ex.Message); } return ret; } } /// <summary> /// Builder测试类 /// </summary> public class TestIBuilder { public static void Main(string[] args) { try { IBuilder objBuilder = BuilderFactory.CreateDALBuilder(); if (objBuilder != null) { Console.WriteLine(objBuilder.GetCode()); } } catch (Exception ex) { Console.WriteLine(ex.Message.ToString()); } } } }