需要知道,两个方法都是 Linq 的方法,使用之前需要引用 Linq 。对于 List 等都是继承可枚举Enumerable这时获取第一个元素可以使用FirstOrDefault。如果使用Find那么需要数组的类型是IList。 下面写一个简单的例子 反编译 Find 可以看到下面代码,下面的代码删了一些代码,让大家比较容易看到 Find 使用的是 for 然后使用判...
The following example demonstrates the find methods for theList<T>class. The example for theList<T>class containsbookobjects, of classBook, using the data from theSample XML File: Books (LINQ to XML). TheFillListmethod in the example usesLINQ to XMLto parse the values from the XML to pr...
View.FindViewById Method Reference Feedback Definition Namespace: Android.Views Assembly: Mono.Android.dll Overloads Expand table FindViewById(Int32) Finds the first descendant view with the given ID, the view itself if the ID matches #getId(), or null if the ID is invalid (< 0...
The following example demonstrates the find methods for theList<T>class. The example for theList<T>class containsbookobjects, of classBook, using the data from theSample XML File: Books (LINQ to XML). TheFillListmethod in the example usesLINQ to XMLto parse the values from the XML to pr...
Im folgenden Beispiel werden die Find-Methoden für dieList<T>-Klasse veranschaulicht. Das Beispiel für dieList<T>-Klasse enthältbookObjekte der -KlasseBook, die die Daten aus derBeispiel-XML-Datei: Bücher (LINQ to XML) verwenden. DieFillList-Methode im Beispiel verwendetLINQ to XML, um...
Finds a view that was identified by the android:id XML attribute that was processed in android.app.Activity#onCreate. FindViewById<T>(Int32) FindViewById(Int32) Finds a view that was identified by the android:id XML attribute that was processed in android.app.Activity#onCreate. C# 複製...
This will call the overridden ToString method // in the Part class. Console.WriteLine(); foreach (Part aPart in parts) { Console.WriteLine(aPart); } // Check the list for part #1734. This calls the IEquatable.Equals method // of the Part class, which checks the PartId for equality...
// Write out the parts in the list. This will call the overridden ToString method// in the Part class.Console.WriteLine();foreach(Part aPartinparts) { Console.WriteLine(aPart); }// Check the list for part #1734. This calls the IEquatable.Equals method// of the Part class, which ...
View.FindViewsWithText Method Reference Feedback Definition Namespace: Android.Views Assembly: Mono.Android.dll Overloads 展開資料表 FindViewsWithText(IList<View>, ICharSequence, FindViewsWith) Finds the Views that contain given text. FindViewsWithText(IList<View>, String, FindViewsWith) ...
In this example, we made use of one of the overloads,Except<TSource>(IQueryable<TSource>, IEnumerable<TSource>). Next, let’s implement an overload that adds anIEqualityComparerobject. How to Use IEqualityComparer Comparer With the LINQ Except Method in C# ...