Webenumerable.SelectMany(e => e.Items.Select(i => i.Name)); Avoid Loops by using LINQ. Believe it or not, you can replace at least 90% of your loops with LINQ queries. Doing so proceeds in a much cleaner and more readable code, as you do not need one or more additional variables, that are cahnged with each iteration or anything like that. Web21 feb. 2024 · Where () returns a new IEnumerable. It is a filtered version (a projection) of the original sequence, and original is left unchanged. ToList () returns a new list using …
IEnumerable in C# - Code Maze
WebIEnumerable squares = Enumerable.Range(1, 10).Select(x => x * x); foreach (int num in squares) { Console.WriteLine(num); } /* This code produces the following output: 1 4 9 … Web除非对象通过直接调用其方法或在 foreach Visual C# 或 For Each Visual Basic 中使用来枚举对象GetEnumerator，否则不会执行此方法表示的查询。 在查询表达式语法中，where … light to light walk environment
C#中的Where的使用_c# where_无畏源于无知的博客-CSDN博客
Web15 jul. 2024 · Each of below examples is presented in C# with both Lambda and Query expression. Let’s create a Person class. And collection of people which we query with … Web19 aug. 2016 · C#, filtering IEnumerable with multiple .Where () statements, performance hits. I have an IEnumerable, and I'm applying multiple filters to it via .Where expression. … WebTo convert an array to an IEnumerable in C#, you can simply use the IEnumerable constructor, passing in the array as an argument. Here's an example: csharpint[] array = { 1, 2, 3, 4, 5 }; IEnumerable enumerable = new List(array); // Or, using the extension method AsEnumerable (): IEnumerable enumerable2 = array.AsEnumerable(); medicann oakland