泛型-增删改查

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public IQueryable<T> GetEntitys(Expression<Func<T,bool>> lambdaWhere) {     //context.UserInfoes.Where(lambdaWhere);     return context.Set<T>().Where(lambdaWhere); } public int Add(T entity) {     context.Set<T>().Add(entity);     return context.SaveChanges(); } public int Delete(int id) {     //通过ID查询这条实体     T entity = context.Set<T>().Find(id);     context.Set<T>().Remove(entity);     return context.SaveChanges(); } public int Update(T entity) {     //设置当前实体的状态为修改     context.Entry(entity).State = System.Data.Entity.EntityState.Modified;     return context.SaveChanges(); } //校验用户是否登录 public class BaseController:Controller {     public bool IsCheckLogin = true;     public static UserInfo BaseUserInfo{get;set;}     protected override void OnActionExecuting(ActionExecutingContext filterContext)     {         base.OnActionExecuting(filterContext);         if(IsCheckLogin)         {             if(BaseUserInfo == null)             {                 filterContext.HttpContext.Response.Redirect("/Login/Index");             }         }     } }