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  • 访问Mysql数据库,连接字符串配置

    Step1:App.config文件里进行配置

    <?xml version="1.0" encoding="utf-8" ?>
    <configuration>
        <startup> 
            <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
        </startup>
      <connectionStrings>
        <add name="Connect" connectionString="server=localhost;user=root;pwd=admin;database=BlackCat"/>
      </connectionStrings>
    </configuration>

    Step2:添加引用

    Step3:使用

     public class MySqlHelp
        {
             public static string connectString = ConfigurationManager.ConnectionStrings["Connect"].ConnectionString.ToString();
            /// <summary>
            /// 执行sql语句返回受影响的行数
            /// </summary>
            /// <param name="sql"></param>
            /// <returns></returns>
            public static  int ExecuteSql(string sql)
            {
                int count;
                using (MySqlConnection  con = new MySqlConnection(connectString))
                {
                    using (MySqlCommand cmd = new MySqlCommand(sql, con))
                    {
                        try
                        {
                            con.Open();
                            count = cmd.ExecuteNonQuery();
                            return count;
                        }
                        catch(MySqlException e)
                        {
                            con.Close();
                            throw e;
                        }
                    }
                }
                
            }
    }
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  • 原文地址:https://www.cnblogs.com/berlinman/p/10050376.html
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