LINQ is a technology for extracting data using an idiom derived from the C# programming language. While it owes much in functional design to SQL, it is fundamentally its own data …

2015年4月27日 · When this is a linq-to-object call, multiple where clauses will lead to a chain of IEnumerables that read from each other. Using the single-clause form will help performance …

2015年4月10日 · When you use it in a linq expression, think of it as though the lambda function is being called on every element in the collection (which I believe is exactly what happens with …

2009年6月6日 · How to make a where in clause similar to one in SQL Server? I made one by myself but can anyone please improve this? public List<State> Wherein(string …

How can I do group by multiple columns in LINQ? Something similar to this in SQL: SELECT * FROM <TableName> GROUP BY <Column1>,<Column2> How can I convert this to LINQ:

2008年8月14日 · We're working on a Log Viewer. The use will have the option to filter by user, severity, etc. In the Sql days I'd add to the query string, but I want to do it with Linq. How can I …

Select distinct using linq [duplicate] Asked 11 years, 10 months ago Modified 8 years ago Viewed 846k times

2008年11月28日 · Wide range of operators provided by default, and others can easily be added for LINQ to Objects Language features introduced primarily for LINQ are widely applicable …

2009年1月7日 · The question was how to " Split List into Sublists with LINQ ", but sometimes you may want those sub-lists to be references to the original list, not copies. This allows you to …

The difference is that Any is an extension method for any IEnumerable<T> defined in System.Linq.Enumerable. It can be used on any IEnumerable<T> instance. Exists does not …