项目间的引用问题

最近用户有个需求，希望能够将引用的动态链接库不放在应用程序的文件夹中。

需要订购AppDomain.CurrentDomain.AssemblyResolve与AppDomain.CurrentDomain.TypeResolve事件。

AssemblyResolve用来在解析程序集失败时使用，TypeResolve用来在解析动态调用的程序及失败时调用（我的代码中是序列化与反序列化）。

结构：

A程序集数据，实现了序列化与反序列化。

B程序集逻辑，实现了存储。

C程序集客户端，实现了对B中的存储与加载的调用。

代码如下：

Datas程序集：

 

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Runtime.Serialization;namespace Datas{ [Serializable] public class People : ISerializable { #region ...变量... /// <summary> /// Name /// </summary> private string mName; /// <summary> /// Age /// </summary> private int mAge; #endregion ...变量... #region ...属性... /// <summary> /// 获取或设置Name /// </summary> public string Name { get { return mName; } set { if (mName != value) { mName = value; } } } /// <summary> /// 获取或设置Age /// </summary> public int Age { get { return mAge; } set { if (mAge != value) { mAge = value; } } } #endregion ...属性... #region ...构造... /// <summary> /// 构造 /// </summary> /// <param name="name"></param> /// <param name="age"></param> public People(string name, int age) { mName = name; mAge = age; } /// <summary> /// 构造 /// </summary> /// <param name="info"></param> /// <param name="context"></param> public People(SerializationInfo info, StreamingContext context) { DeSerialize(info); } #endregion ...构造... #region ...方法... /// <summary> /// 序列化 /// </summary> /// <param name="info"></param> private void Serialize(SerializationInfo info) { info.AddValue("Name", mName); info.AddValue("Age", mAge); } /// <summary> /// 反序列化 /// </summary> /// <param name="info"></param> private void DeSerialize(SerializationInfo info) { foreach (SerializationEntry entry in info) { if (entry.Name == "Name") { mName = info.GetString("Name"); } else if (entry.Name == "Age") { mAge = info.GetInt32("Age"); } } } #endregion ...方法... #region ...ISerializable 成员... /// <summary> /// 序列化 /// </summary> /// <param name="info"></param> /// <param name="context"></param> public void GetObjectData(SerializationInfo info, StreamingContext context) { Serialize(info); } #endregion ...ISerializable 成员... }} 

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Datas{ [Serializable] public class PeopleList : List<People> { }} 

 

Logical程序集：

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Logical{ public class Employee { #region ...变量... /// <summary> /// Name /// </summary> private string mName; /// <summary> /// Age /// </summary> private int mAge; #endregion ...变量... #region ...属性... /// <summary> /// 获取或设置Name /// </summary> public string Name { get { return mName; } set { if (mName != value) { mName = value; } } } /// <summary> /// 获取或设置Age /// </summary> public int Age { get { return mAge; } set { if (mAge != value) { mAge = value; } } } #endregion ...属性... #region ...构造... /// <summary> /// 构造 /// </summary> /// <param name="name"></param> /// <param name="age"></param> public Employee(string name, int age) { mName = name; mAge = age; } #endregion ...构造... }} 

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Logical{ public class EmployeeList : List<Employee> { }} 

using System;using System.Collections.Generic;using System.Linq;using System.Text;using Datas;using System.IO;using System.Diagnostics;using System.Runtime.Serialization.Formatters.Binary;namespace Logical{ public class Company { #region ...变量... /// <summary> /// People集合 /// </summary> private PeopleList mPeoples = new PeopleList(); /// <summary> /// 雇员 /// </summary> private EmployeeList mEmployees = new EmployeeList(); #endregion ...变量... #region ...属性... /// <summary> /// 获取雇员集合 /// </summary> public EmployeeList Employees { get { return mEmployees; } } #endregion ...属性... #region ...构造... /// <summary> /// 构造 /// </summary> public Company() { } #endregion ...构造... #region ...方法... /// <summary> /// 保存 /// </summary> /// <param name="path"></param> public void Save(string path) { try { foreach (Employee employee in mEmployees) { People people = new People(employee.Name, employee.Age); mPeoples.Add(people); } using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite)) { BinaryFormatter formatter = new BinaryFormatter(); formatter.Serialize(fs, mPeoples); } } catch (Exception e) { Debug.WriteLine("Logical.Company.Save Exception: " + e.Message); } } /// <summary> /// 加载 /// </summary> /// <param name="path"></param> public void Load(string path) { try { using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Read)) { BinaryFormatter fomatter = new BinaryFormatter(); mPeoples = fomatter.Deserialize(fs) as PeopleList; } if (mPeoples != null && mPeoples.Count > 0) { foreach (People people in mPeoples) { Employee employee = new Employee(people.Name, people.Age); mEmployees.Add(employee); } } } catch (Exception e) { Debug.WriteLine("Logical.Company.Load Exception: " + e.Message); } } #endregion ...方法... }} 

 

Customers程序集：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;using System.Reflection;using Logical;namespace Customers{ class Program { /// <summary> /// 应用程序路径 /// </summary> private const string AppPath = @"d:/Study Data"; /// <summary> /// Data依赖项 /// </summary> private const string DataAssemblyName = "Datas"; /// <summary> /// 数据文件 /// </summary> private const string DataFileName = "Customer.dat"; static void Main(string[] args) { AppDomain.CurrentDomain.AssemblyResolve += AssemblyResolve; AppDomain.CurrentDomain.TypeResolve += AssemblyResolve; Company company = new Company(); if (File.Exists(DataFileName)) { company.Load(Path.GetFullPath(DataFileName)); } if (company.Employees.Count <= 0) { Console.WriteLine("Add from application!"); company.Employees.Add(new Employee("yafeya", 26)); company.Employees.Add(new Employee("QQ", 5)); company.Employees.Add(new Employee("3rd radish", 4)); } else { Console.WriteLine("Read from file!"); } foreach (Employee employee in company.Employees) { Console.WriteLine(string.Format("Name: {0}, Age: {1}", employee.Name, employee.Age)); } company.Save(Path.GetFullPath(DataFileName)); Console.Read(); } static Assembly AssemblyResolve(object sender, ResolveEventArgs args) { string dataAssemblyFileName = Path.Combine(AppPath, string.Format("{0}.dll", DataAssemblyName)); return Assembly.LoadFrom(dataAssemblyFileName); } }} 

 

假设用户不想将Datas程序集放在应用程序文件夹下，我的代码里面放到了d:/Study Data里面，你可以随便放。

然后编译，运行OK。

需要注意：Logical引用Datas；Customers引用Logical；都是文件引用。

项目我会传到我的下载里面，过后会把链接附上: 项目链接