What's a HashTable

Q

What's difference between HashTable and ArrayList ?

✍: Guest

A

You can access array using INDEX value of array, but how many times you know the real value of index. Hashtable provides way of accessing the index using a user identified KEY value, thus removing the INDEX problem.

2021-03-07, 10073👍, 0💬

In below sample code if we create a object of class2 which constructor will fire first
In below sample code if we create a object of class2 which constructor will fire first? Public Class Class1 Sub New() End Sub End Class Public Class class2 Inherits Class1 Sub New() End Sub End Class 2007-10-23, 9430👍, 0💬

Where are all .NET Collection classes located
Where are all .NET Collection classes located ? System.Collection namespace has all the collection classes available in .NET. 2007-10-23, 8499👍, 0💬

What are shared (VB.NET)/Static(C#) variables
What are shared (VB.NET)/Static(C#) variables? Static/Shared classes are used when a class provides functionality which is not specific to any instance. In short if you want an object to be shared between multiple instances you will use a static/Shared class. Following are features of Static/Shared ... 2007-10-23, 8283👍, 0💬

What is the use of “OverRides” and “Overridable” keywords
What is the use of “OverRides” and “Overridable” keywords ? Overridable is used in parent class to indicate that a method can be overridden. Overrides is used in the child class to indicate that you are overriding a method 2007-10-23, 6980👍, 0💬

What is nested Classes
What is nested Classes ? Nested classes are classes within classes. In sample below “ClsNested” class has a “ChildNested” class nested inside it. Public Class ClsNested Public Class ChildNested Public Sub ShowMessage() MessageBox.Show(“Hi this is nested class”) End Sub End Class End Class This is ... 2007-10-23, 6371👍, 0💬

What is ENUM
What is ENUM ? It’s used to define constants. 2007-10-23, 6316👍, 0💬

What is ArrayList
What is ArrayList ? Array is whose size can increase and decrease dynamically. Array list can hold item of different types. As Array list can increase and decrease size dynamically you do not have to use the REDIM keyword. You can access any item in array using the INDEX value of the array position. 2007-10-23, 6301👍, 0💬

What is Operator Overloading in .NET
What is Operator Overloading in .NET? It provides a way to define and use operators such as +, -, and / for user-defined classes or structs. It allows us to define/redefine the way operators work with our classes and structs. This allows programmers to make their custom types look and feel like simp... 2007-10-23, 6233👍, 0💬

What is Dispose method in .NET
What is Dispose method in .NET ? .NET provides “Finalize” method in which we can clean up our resources. But relying on this is not always good so the best is to implement “Idisposable” interface and implement the “Dispose” method where you can put your clean up routines. 2007-10-23, 6170👍, 0💬

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