C#创建并使用DLL文件

骑猪看日落 2022-10-16 06:21 280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]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70]: /images/20221014/404d1199330f41869d4bb2c27ef8651e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 1]: /images/20221014/76dece374d03455095032fbbe01ddfcd.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 2]: /images/20221014/4dbaabd65c94480c84c5de8dab8535bb.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 3]: /images/20221014/7acd41b0cd494686b6c743a26951469d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 4]: /images/20221014/97a03b6d47404fc0ad4d619858f9bf11.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 5]: /images/20221014/ab67d42b26e549578f2e7d55c372e9fa.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 6]: /images/20221014/1f022917bd6746fe9d03bb9e3ae658f6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 7]: /images/20221014/c96feea3c99d4474a536123e68671967.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 8]: /images/20221014/8c9d5141f73648fe9bf967348068b3b5.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 9]: /images/20221014/1447acaffafa448a9d9a744c4429aa65.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 10]: /images/20221014/4aa0f78f89954c9a803186e1b0babd60.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 11]: /images/20221014/c8360e31925a4523b68823418a284627.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 12]: /images/20221014/0b597b6aa1bd4bb594247253a8a1a8c9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 13]: /images/20221014/fd35c8da122646d18f324c80ee9df0a1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 14]: /images/20221014/292aef7e324940b4b6a11f8688dcb2bd.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 15]: /images/20221014/41202a093de04a2abf60349a42b6290e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 16]: /images/20221014/b8f4c36651954648ba53bda08c2f3b95.png