List collection class in C sharp Arabic #74
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List collection class in C sharp Arabic #73
❑ List collection class in C#.
This is collection to part 73 . Please watch part 73 , before proceeding. Contains() function: Checks if an item exists in the list . This method returns true if the items Exists , else false. Exists() function : checks if an item exists in the list based on a condition . This method returns true f the items exists ,else false.
Find() function : searches for an element that matches the conditions defined by the specified lambda expression and returns the first matching item from the first .
FindLast() function: Searches for an element that matches the conditions defined by the specified lambda expression and returns the last matching item from the list.
FindAll() function : Returns all the items from the list that match the conditions specified by the lambda expression.
FindIndex() function: Returns the index of the first item, that matches the condition specified by the lambda expression . There are 2 other overloads of this method which allows us o specify the range of elements to search, with in the list .
FindLastIndex() function : Returns the index of the last item ,that matches the condition specified by the lambda expression .There are 2 other overloads of this method which allows us to specify the range of elements to search , with in the list .
Convert an array to a List – Use ToList () method Convert a list to an array – Use ToArray() method Convert a list to a Dictionary – Use ToDictionary() method
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