Explain Important Classes used in Windows ?

Explain Important Classes used in Windows ?

 Answer:-     

         In C# Programming for developing the windows application there are several pre-define  classes, these pre-define classes are the part of windows framework.
       .net provide set of library classes which are called as system classes.

• following are the classes used in windows.

1. Input/ Output Class:-

          in C# programming I/O classes are used to represent all system I/O operations by using several  methods.

      

     2. String Handling Class:-

          this class are used for performing the string operation like compare, concat, copy, as well as length these all methods are present in class 

    3. Array-list Class:-

        Array-list class is used to perform all array operations such as clear, insert, sort, reverse, copy this all are the array operations can be perform in C#.

   4. Drawing Class:-

       Drawing class is used in C# program for working with some drawing operations such as like line, rectangle, circle.

    5.Security Class:-

       security classes are used to provide security to the member of the form by including several                 components like excepections  handler, I/O controller and data Safety.

   6. Database Class:-

       these are include by using system database it work about all the database connectivity process like add new record, delete record and modify record.

   7. Registry Class:-

       it is compulsory for every windows application because after drag and drop any control. its compulsory to make registry every control in our application.

   8. Mathematical Class:-

       this class are used in C# windows project for performing the mathmatical functions like Sin, Cos,  Tang and Log etc.

       Above all are the windows classes in  C# for make interaction with C# project.