C#创建并使用DLL文件

骑猪看日落 2022-10-16 06:21 295阅读 0赞

# 一.创建DLL文件 #

## 1.新建C\#类库项目 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 1]

## 2.编写代码 ##

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    
    namespace MyLibrary
    {
        public class Class1
        {
            public string getMsg() {
                return "Message";
            }
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 2]

## 3.生成DLL文件 ##

右键MyLibrary项目，点击生成，生成dll文件。或者选中MyLibrary按F6键生成dll文件。生成的dll文件路径为：…\\MyLibrary\\bin\\Debug\\MyLibrary.dll  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 3]

# 二.使用DLL文件 #

## 1.新建C\#窗体应用程序 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 5]

## 2.添加DLL引用 ##

右键MyApplication-添加-新建文件夹。新建lib文件夹，存放刚才已经生成的dll文件。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 6]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 7]

将生成好的dll文件复制到lib文件夹下。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 8]  
右键MyApplication-添加引用-浏览-lib-MyLibrary.dll，然后点击确定。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 9]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 10]  
接着就可以看见MyLibrary引用已经添加进来了。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 11]

## 3.编写代码使用库文件 ##

右键Form1-查看代码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 12]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 13]

添加代码

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;
    using MyLibrary;
    
    namespace MyApplication
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
    
                Class1 class1 = new Class1();
                Console.WriteLine("============="+class1.getMsg()+"=================");
            }
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 14]

运行项目  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 15]

# 三.运行结果 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 16]

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