29 lines
		
	
	
		
			1019 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			29 lines
		
	
	
		
			1019 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
|   | --- | |||
|  | title: First Or Default | |||
|  | --- | |||
|  | 
 | |||
|  | # FirstOrDefault
 | |||
|  | 
 | |||
|  | Returns the first element that satisfies an optional given condition. If no element is found, the ```default()``` of the object is returned | |||
|  | 
 | |||
|  | ### Signature
 | |||
|  | ```csharp | |||
|  | Enumerable.FirstOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) | |||
|  | ``` | |||
|  | 
 | |||
|  | ## Example
 | |||
|  | ```csharp | |||
|  | var fruits = new List<Fruit>() { | |||
|  |     new Fruit() { Id = 1, Name = "Orange",     Color = "Orange", Quantity: 3   }, | |||
|  |     new Fruit() { Id = 2, Name = "Strawberry", Color = "Red",    Quantity: 12  }, | |||
|  |     new Fruit() { Id = 3, Name = "Grape",      Color = "Purple", Quantity: 25  }, | |||
|  |     new Fruit() { Id = 4, Name = "Pineapple",  Color = "Yellow", Quantity: 1   }, | |||
|  |     new Fruit() { Id = 5, Name = "Apple",      Color = "Red",    Quantity: 5   }, | |||
|  |     new Fruit() { Id = 6, Name = "Mango",      Color = "Yellow", Quantity: 2   } | |||
|  | }; | |||
|  | 
 | |||
|  | var firstFruit = fruits.FirstOrDefault(); // Orange | |||
|  | 
 | |||
|  | var firstYellowFruit = fruits.FirstOrDefault(f => f.Color == "Green"); // null | |||
|  | ``` |