.NET在VS2008中生成DLL并调用

1.生成DLL

打开VS2008 - >新建->项目->类库->ClassLibrary1,在ClassLibrary1中会自动创建一个Class1类

class1中加入代码如下：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 namespace ClassLibrary1
 {
     public class Class1
     {
         private int a = ;
         private int b = ;
         public int SetA
         {
             get { return a; }
             set { a = value; }
         }

         public int SetB
         {
             get { return b; }
             set { b = value; }
         }
         public int getResult()
         {
             return a - b;
         }
     }
 }

创建两个子类：

 //子类ClassAdd
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 namespace ClassLibrary1
 {
     public class ClassAdd : Class1
     {
         public int getResult()
         {
             return SetA + SetB;
         }
     }
 }

 //子类ClassMult
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 namespace ClassLibrary1
 {
     public class ClassMult : Class1
     {
         public int getResult()
         {
             return SetA * SetB;
         }
     }
 }

生成解决方案，在ClassLibrary1\ClassLibrary1\bin\Debug就可获得DLL文件

2.调用DLL

VS2008 - >新建->网站 创建一个websit1（asp.net网站）

在该项目下生成一个文件夹，命名bin：右键->新建文件夹->bin

然后在该文件件中引入之前生成的dll：bin右键->添加引用->浏览->找到ClassLibrary1.dll

在Default.aspx.cs添加如下代码：

 using System;
 using System.Configuration;
 using System.Data;
 using System.Linq;
 using System.Web;
 using System.Web.Security;
 using System.Web.UI;
 using System.Web.UI.HtmlControls;
 using System.Web.UI.WebControls;
 using System.Web.UI.WebControls.WebParts;
 using System.Xml.Linq;
 using ClassLibrary1;
 public partial class _Default : System.Web.UI.Page
 {
     protected void Page_Load(object sender, EventArgs e)
     {
         ClassAdd add = new ClassAdd();
         ClassMult mult = new ClassMult();
         add.SetA = ;
         add.SetB = ;
         Response.Write(add.getResult().ToString());
         mult.SetA = ;
         mult.SetB = ;
         Response.Write("<br />" + mult.getResult().ToString());
     }

 }

3.运行website1

网页显示结果：

21
110