system.data.dll中发生了'system.argumentexception'类型的未处理异常 [英] An unhandled exception of type 'system.argumentexception' occurred in system.data.dll

问题描述

我正在尝试为我的c＃项目构建一个sql数据库用户名和密码，但是当我尝试运行它时，它说

 System.Data中发生了一个未处理的类型'System.ArgumentException'异常。 dll 

这是我的代码

 MySqlConnection con = new MySqlConnection（@Data Source = localhost; port3306; Inital Catalog = id412964_loginl33t; User Id = root; password =''）; 

它说;不是支持，但它适用于视频教程。



我尝试过：



我试图带走;但它给了我一个错误所以我需要;

解决方案

看起来端口属性中有一个拼写错误，它应该是 port3306 < pre lang =c＃> Port = 3306

您可以查看以下链接以获取现成的连接字符串：

MySQL连接字符串 - ConnectionStrings.com [ ^ ]

I am trying to build a sql database username and password for my c# project but when I try to run it, it says

An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dll

here is my code

MySqlConnection con = new MySqlConnection(@"Data Source =localhost;port3306;Inital Catalog=id412964_loginl33t;User Id=root;password= ''");

it says the ; is not support but it worked on the tutorial for the video.

What I have tried:

I have tried to take away the ; but it gives me a error so I require the ;

解决方案

Looks like there is a typo in port property, it should be port3306

Port=3306

You can check the below link for readymade connections strings:
MySQL connection strings - ConnectionStrings.com[^]

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