//浏览器WebSocket对象var wsImpl = window.WebSocket || window.MozWebSocket;function SocketStart(options, cl) {this.url = options.url;//Socket地址this.ws = new wsImpl(options.url);//初始化Socket对象this.userid = op

.NET Core/.NET6 使用DbContext 连接数据库，SqlServer和MySql添加包并引用using Microsoft.EntityFrameworkCore;SQL server需要添加包Microsoft.EntityFrameworkCore.SqlServerMySql需要添加包Pomelo.EntityFrameworkCore.MySql创建类 DbEntitys