WebFeb 18, 2024 · Grouping is one of the most powerful capabilities of LINQ. The following examples show how to group data in various ways: By a single property. By the first letter of a string property. By a computed numeric range. By Boolean predicate or other expression. By a compound key. WebNote that the Select method returns a new sequence and does not modify the original collection. If you want to modify the original collection, you can use the ForEach method instead of Select. More C# Questions. Programmatically Open Word Document Located in the Computer in C#
How to Select Specific Columns in an Entity Framework Query
WebYou can use LINQ to select all Parent objects where any Child object has a specific name, like this: csharpList parents = GetParents(); // Method to retrieve parent objects string childName = "Alice"; List result = parents.Where(p => p.Children.Any(c => c.Name == childName)).ToList(); In this example, the parents collection is ... WebAbove, the first statement uses the ARRAY constructor to construct an array and insert data into the Person table.. The array can be added using curly braces { }.In second statement, an array is added using curly braces. When you use curly braces, use single quotes ' ' to enclose the array and double quotes " "to wrap text items.. The third statement adds a single value … greetings from l.a. tim buckley
Group query results (LINQ in C#) Microsoft Learn
WebApr 8, 2024 · Assuming you are using MySQL (as the question is tagged), the following will return an arbitrary value for the other columns: select * from t group by code; Copy. However, the particular values being selected come from indeterminate rows. WebSep 15, 2024 · When the select clause produces something other than a copy of the source element, the operation is called a projection. The use of projections to transform data is a powerful capability of LINQ query expressions. For more information, see Data Transformations with LINQ (C#) and select clause. LINQ Query Expressions WebApr 14, 2024 · The logic to transform the data into an List of Expando objects is implemented in the two private methods of my data access layer (see below). The public interface just contains parameterized methods to fetch the data (which is the way I usually write this sort of thing anyway). greetings from imrie houseclick five