public Articles GetByName(string name, Categories category, Companies company) { var query = from article in session.Linq<Articles>() where article.Name == name && article.Category == category && article.Company == company select article; return query.FirstOrDefault(); } how can query be case
public Articles GetByName(string name, Categories category, Companies company) { var query = from article in session.Linq<Articles>() where article.Name == name && article.Category == category && article.Company == company select article; return query.FirstOrDefault(); } 如何查询不区分大小写
How can I make the line below case insensitive? drUser["Enrolled"] = (enrolledUsers.FindIndex(x => x.Username == (string)drUser["Username"]) != -1); I was given some advice earlier today that suggested I use: x.Username.Equals((string)drUser["Username"], StringComparison.OrdinalIgnoreCase))); the trouble is I can't get this to work, I've tried the line below, this compiles b
我如何使这行不区分大小写？ drUser["Enrolled"] = (enrolledUsers.FindIndex(x => x.Username == (string)drUser["Username"]) != -1); 今天早些时候我收到了一些建议，建议我使用： x.Username.Equals((string)drUser["Username"], StringComparison.OrdinalIgnoreCase))); 麻烦的是我无法得到这个工作，我试过下面这行，这个编译但返回错误的结果，它返回登记用户作为未注册和未注册的用户作为登记。 drUser["E
What is the use of IQueryable in the context of LINQ? Is it used for developing extension methods or any other purpose? Marc Gravell's answer is very complete, but I thought I'd add something about this from the user's point of view, as well... The main difference, from a user's perspective, is that, when you use IQueryable<T> (with a provider that supports things corr
在LINQ的上下文中使用IQueryable什么用？ 它用于开发扩展方法还是用于其他目的？ Marc Gravell的答案非常完整，但我认为我会从用户的角度为此添加一些内容...... 从用户的角度来看，主要区别在于，当您使用IQueryable<T> （使用支持正确的东西的提供程序）时，可以节省大量资源。 例如，如果您使用的是远程数据库（使用多个ORM系统），则可以通过两种方式从表中获取数据，其中一种返回IEnumerable<T> ，另一
I have a compiler error with GCC when trying to processor some macros from some TI code that compiles ok with the TI compiler. The Macro's in question are some variation of #define CHIP_FSET(Reg,Field,Val) _CHIP_##Reg##_FSET(##Field,Val) and it is used in code like CHIP_FSET(ST1_55, XF, CHIP_ST1_55_XF_OFF) and when GCC gets a hold of that it says error: pasting "(" and &
在尝试处理TI编译好的TI代码中的某些宏时，我遇到了GCC的编译器错误。 宏观的问题是一些变化 #define CHIP_FSET(Reg,Field,Val) _CHIP_##Reg##_FSET(##Field,Val) 它用于代码中 CHIP_FSET(ST1_55, XF, CHIP_ST1_55_XF_OFF) 当海湾合作委员会认为它说 错误：粘贴“（”和“XF”不提供有效的预处理令牌 如果我删除Field前面的##，它会成功预处理。 如果我正确理解代码，则字段前面的##似乎不相关，因为它变成了一个带有
这段代码区分大小写，如何区分大小写？ public IQueryable<FACILITY_ITEM> GetFacilityItemRootByDescription(string description) { return this.ObjectContext.FACILITY_ITEM.Where(fi => fi.DESCRIPTION.Contains(description)); } fi => fi.DESCRIPTION.ToLower().Contains(description.ToLower()) If the LINQ query is executed in database context, a call to Contains() is mapped to the LIKE operator
这段代码区分大小写，如何区分大小写？ public IQueryable<FACILITY_ITEM> GetFacilityItemRootByDescription(string description) { return this.ObjectContext.FACILITY_ITEM.Where(fi => fi.DESCRIPTION.Contains(description)); } fi => fi.DESCRIPTION.ToLower().Contains(description.ToLower()) 如果LINQ查询在数据库上下文中执行，则对Contains()的调用将映射到LIKE运算符： .Where(a => a.Field.C
I'm having trouble with a query written in Linq and Lambda. So far, I'm getting a lot of errors here's my code: int id = 1; var query = database.Posts.Join(database.Post_Metas, post => database.Posts.Where(x => x.ID == id), meta => database.Post_Metas.Where(x => x.Post_ID == id),
我在用Linq和Lambda编写的查询时遇到了麻烦。 到目前为止，我得到了很多错误，这里是我的代码： int id = 1; var query = database.Posts.Join(database.Post_Metas, post => database.Posts.Where(x => x.ID == id), meta => database.Post_Metas.Where(x => x.Post_ID == id), (post, meta) => new { Post
Given two strings text1 and text2 public SOMEUSABLERETURNTYPE Compare(string text1, string text2) { // DO SOMETHING HERE TO COMPARE } Examples: First String: StackOverflow Second String: StaqOverflow Return: Similarity is 91% The return can be in % or something like that. First String: The simple text test Second String: The complex text test Return: The values can be conside
给定两个字符串text1和text2 public SOMEUSABLERETURNTYPE Compare(string text1, string text2) { // DO SOMETHING HERE TO COMPARE } 例子： 第一个字符串：StackOverflow 第二个字符串：StaqOverflow 回报率：相似度为91％ 回报可以在％或类似的东西。 第一个字符串：简单的文本测试 第二个字符串：复杂的文本测试 返回：这些值可以被认为是相等的 有任何想法吗？ 做这个的最好方式是什么？ 有多种
Let us say I have this code string seachKeyword = ""; List<string> sl = new List<string>(); sl.Add("store"); sl.Add("State"); sl.Add("STAMP"); sl.Add("Crawl"); sl.Add("Crow"); List<string> searchResults = sl.FindAll(s => s.Contains(seachKeyword)); How can I ignore the letter case in Contains search? Thanks, The best option would be using the ordinal case-insensitive com
让我们说我有这个代码 string seachKeyword = ""; List<string> sl = new List<string>(); sl.Add("store"); sl.Add("State"); sl.Add("STAMP"); sl.Add("Crawl"); sl.Add("Crow"); List<string> searchResults = sl.FindAll(s => s.Contains(seachKeyword)); 如何忽略包含搜索中的字母大小写？ 谢谢， 最好的选择是使用序号不区分大小写的比较，但Contains方法不支持它。 您可以使用以下方法来执
In the example shown here (and on numerous other websites) with regards to the null-conditional operator, it states that int? first = customers?[0].Orders.Count(); can be used to get the count for the first customer. But this statement does not check for the existence of customers in the collection and can throw an index out of range exception. What should be the correct (preferably single-l
在这里展示的例子（以及其他许多网站）中，关于空条件运算符，它指出这一点 int? first = customers?[0].Orders.Count(); 可以用来计算第一个客户的数量。 但是这个陈述并没有检查集合中是否存在客户，并且可以抛出索引超出范围的异常。 什么应该是正确的（最好是单线的）声明，负责检查元素的存在？ null条件运算符旨在有条件地访问null但这不是您遇到的问题。 您正试图访问一个空数组 。 您可以将其转化为FirstOrDef
I'm new to programming and I have just installed Visual Studio 2017. I created this code (from the book I'm learning), but this does not compile. I have problem with string interpolation and I get error: Unexpected character '$', but I'm using C# 6.0 so this should not be a problem ? static void Main(string[] args) { string comparison; WriteLine("Enter
我是编程新手，我刚刚安装了Visual Studio 2017.我创建了这个代码（从我正在学习的书中），但是这不能编译。 我有字符串插值问题，我得到错误： 意外字符'$'， 但我使用C＃6.0，所以这不应该是一个问题？ static void Main(string[] args) { string comparison; WriteLine("Enter the number:"); double var1 = ToDouble(ReadLine()); WriteLine("Enter another number :");