Adding Drag/Drop to a text box Adding Drag/Drop/Resizable Selection Rectangle to Image Editor Adding if condition as if button not clicked Adding Image to the DataTable Adding item to the static class of List Adding Items to enum ! Adding Line Break To DataTable Row Adding List<string> to...
}).ToList().Select(u=> u.uid).ToList<string>();
Linq是.NET Framework中的一个功能强大的查询语言,用于对集合进行查询和操作。在Linq中,Select和ToList是两个常用的方法。 1. Linq Select: - 概念...
private static voidConversion() {ILookup<string,Racer> racers = (fromrinFormula1.GetChampions()//获得每一个赛手fromcinr.Cars //获得赛手的车子集合,遍历是每一个车子多次获得结果select new{ Car = c, //车子名 Racer = r //这个车手,如果这个车手有多部车子就会出现多个车子名,同一个车手对象的结...
那么只返回一个员工姓名就没有多大用处了。(更别提你可以有两个“彼得的雇员”了.)
// Split the text block into an array of sentences.string[] sentences = text.Split(['.','?','!']);// Define the search terms. This list could also be dynamically populated at run time.string[] wordsToMatch = ["Historically","data","integrated"];// Find sentences that c...
java stream 将List<Object>转换为 List<String>,类似C#的LINQ的select()方法,javastreammap,实现将对象list转为单属性list。直接上代码。List<String>collect=dataItemList.stream().m
(',')whereConvert.ToInt32(splitName[2]) == Convert.ToInt32(splitScoreLine[0])select(FirstName: splitName[0], LastName: splitName[1], ExamScores: (fromscoreAsTextinsplitScoreLine.Skip(1)selectConvert.ToInt32(scoreAsText)) .ToList() );// Display each student's name and exam ...
string[] names = ["Svetlana Omelchenko","Claire O'Donnell","Sven Mortensen","Cesar Garcia"]; IEnumerable<string> queryFirstNames =fromnameinnamesletfirstName = name.Split(' ')[0]selectfirstName;foreach(varsinqueryFirstNames) { Console.Write(s +" "); }//Output: Svetlana Claire Sven Cesa...
下面的代码示例演示如何使用ToList强制立即查询计算并返回List<T>包含查询结果的 。 C# string[] fruits = {"apple","passionfruit","banana","mango","orange","blueberry","grape","strawberry"}; List<int> lengths = fruits.Select(fruit => fruit.Length).ToList();foreach(intlengthinlengths) { Con...