The query expression contains three clauses: from, where and select. 'toc' 'content' : toc id name(50) content id text(500) title(50) tocid toc.name, content.text content.title resultset. Just use a plain foreach: foreach (var question in problem.Questions) { question.AssignedDate = DateTime.Now; _uow.Questions.Add (question); } Unless there is specific reason to use a lambda, a foreach is cleaner and more readable. This is easy to do by using a where clause to filter the items, before using foreach. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? If you were to have a Where it would first apply the filter, then the projection. Can the Spiritual Weapon spell be used as cover? Why are physically impossible and logically impossible concepts considered separate in terms of probability? Is a PhD visitor considered as a visiting scholar? The following example demonstrates the use of the Action delegate How can I do multiple operations inside a C# LINQ ForEach loop In a LINQ query, you are always working with objects. How can we prove that the supernatural or paranormal doesn't exist? LINQ simplifies this situation by offering a consistent model for working with data across various kinds of data sources and formats. Update all objects in a collection using LINQ. Does foreach execute the query only once? How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? Also it's worth noting that people implementing LINQ providers are encouraged to make the common methods work as they do in the Microsoft provided providers but they're not required to. In some situations we are in a position to check two conditions in our logic. //queryAllCustomers is an IEnumerable<Customer> var queryAllCustomers = from cust in customers select cust; The range variable is like the iteration variable in a foreach loop except that no actual iteration . Similarly, in the C# example, an Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide.
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