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Here, we need to remember the index position of each value which is a difficult task and without knowing the index position we cannot access the value. Here we create a collection using ArrayList and then we are accessing the Location and EmailId by using the index position. Now if I want to know the email id or dept number of the employee then it is very difficult for me to use the index position. But, it is very difficult for us to remember the index position of the element in order to access the values.įor example, let us say we have an employee array that contains the name, address, mobile, dept no, email id, employee id, salary, location, etc. The index position of the elements starts from zero (0) to the number of elements – 1. In the case of Arrayand ArrayList in C#, we access the elements from the collection using the index position. What are the Problems with Array and ArrayList Collection in C#?

How to Add Elements into a Hashtable Collection in C#?.

How to Create a Non-Generic Hashtable Collection in C#?.Differences between Hashtable and ArrayList in C#?.What is a Hashtable in C# and How does it work?.What are the Problems with Array and ArrayList Collection in C#?.ConcurrentDictionary Collection Class in C#.Generic LinkedList Collection Class in C#.Generic SortedDictionary Collection Class in C#.Generic SortedSet Collection Class in C#.Generic SortedList Collection Class in C#.Conversion Between Array List and Dictionary in C#.How to Sort a List of Complex Type in C#.Advantages and Disadvantages of Non-Generic Collection in C#.Advantages and Disadvantages of Arrays in C#.Variable Reference and Instance of a Class in C#.Partial Class and Partial Methods in C#.Multiple Inheritance Realtime Example in C#.Interface Interview Questions and Answers in C#.How to Use Abstract Classes and Methods in C# Application.Abstract Class and Abstract Methods Interview Questions in C#.Abstract Class and Abstract Methods in C#.Generalization and Specialization in C#.How to use Inheritance in Application Development.Static vs Non-Static Constructors in C#.