.NET的语法优化

.NET的语法优化

1.多参数

判断 条件

//判断 var fileKey = new { DateStart = search.DateStart.IsNull(), //关开始时间 DateEnd = search.DateEnd.IsNull(), //结束时间 UserName = search.UserName.IsNullOrEmpty(), //用户名 NickName = search.NickName.IsNullOrEmpty(), //昵称 PhoneNumber = search.PhoneNumber.IsNullOrEmpty(), //电话号码 ProblemCatey = search.ProblemCatey.IsNullOrEmpty(), //问题种类 };

IsNull()  和 IsNullOrEmpry() 是扩展静态方法：

///

/// 验证字符串是否为空字符串 ///

/// /// public static bool IsNullOrEmpty(this string self) { if (self == null || self.Length == 0) { return true; } return false; }

使用如下

//查询 var list = from p in unitOfWork.FeedBack.Get(p => (fileKey.ProblemCatey || p.ProblemCatey.Contains(search.ProblemCatey))) join m in unitOfWork.Member.Get() on p.UserID equals m.Id where fileKey.UserName || m.UserName.Contains(search.UserName) where fileKey.NickName || m.NickName.Contains(search.NickName) where fileKey.PhoneNumber || m.PhoneNumber.Contains(search.PhoneNumber) where fileKey.DateStart || p.CreatedOn >= search.DateStart where fileKey.DateEnd || p.CreatedOn <= search.DateEnd select new FeedBackModelExd { Id = p.Id, ProblemCatey = p.ProblemCatey, CreatedOn = p.CreatedOn, UserName = m.UserName, NickName = m.NickName, PhoneNumber = m.PhoneNumber, Content = p.Content, };

2.单一参数

改造前

private static bool TraditionalVerify(int number) { if ((number > 0) && (number >= 10) && (number % 2 > 0) && (number * 2 > 100)) { return true; } return false; }

改造后：

private static bool UseFunc(int number) { var conditionlist = new List>() { () => number > 0, () => number >= 10, () => number % 2 > 0, () => number * 2 > 100 }; return conditionlist.TrueForAll(foo => foo.Invoke()); }

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