user defined type

Hi!

We can define our own type in C#.net is called user-defined datatype.

The examples are structure,enumeration and classes.
Here is the example with structure...

using System;

namespace Structure

{

class Program

{

// creating three different variable in single structure

struct book

{

public string bookname;

public int price;

public string category;

}

static void Main(string[] args)

{

//Creating two book type variable

book language, database;

// Storing value in language variable

Console.Write("Enter book name:\t");

language.bookname = Console.ReadLine();

Console.Write("Enter book price:\t");

language.price = Convert.ToInt32(Console. ReadLine());

Console.Write("Enter book category:\t");

language.category = Console.ReadLine();

//Storing value in database variable

Console.Write("\n\nEnter book name:\t");

database.bookname = Console.ReadLine();

Console.Write("Enter book price:\t");

database.price = Convert.ToInt32(Console. ReadLine());

Console.Write("Enter book category:\t");

database.category = Console.ReadLine();

//Displaying value of language variable

Console.Write("\n\n===================");

Console.Write("\n\t\tLanguage\n");

Console.Write("===================\n\n");

Console.Write("Book Name:\t{0}", language.bookname);

Console.Write("\nBook Price:\t{0}", language.price);

Console.Write("\nBook Category:\t{0}", language.category);

Console.Write("\n\n==================\n");

Console.Write("\t\tDatabase\n");

Console.Write("====================\n\n");

Console.Write("Book Name:\t{0}", database.bookname);

Console.Write("\nBook Price:\t{0}", database.price);

Console.Write("\nBook Category:\t{0}", database.category);

Console.ReadLine();

}

7 Replies

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Ravi Kumar12y ago
Accepted answer
hi

You can create an User Defined Datatype Students like this:

public class Students
{
private string _rollno;
private string _name;

public string rollno
{
get
{
return _rollno;
}
set
{
_rollno = value;
}
}

public string name
{
get
{
return _name;
}
set
{
_name = value;
}
}
}

You can use the class, like this:

Students s = new Students();
s.rollno = "S001";
s.name = "Ram";
Ravi Kumar12y ago
s is object name
Vulpes12y ago
In a sense all types in .NET are 'user defined' types.

Even apparently built-in types in C# such as object, int, bool are just aliases for the .NET framework types: System.Object, System.Int32 and System.Boolean respectively.
Ankur Jain12y ago
Hi!
We can define our own type in C#.net is called user-defined datatype.

The examples are structure,enumeration and classes.
Here is the example with structure...
using System;

namespace Structure
{
class Program
{
// creating three different variable in single structure
struct book
{
public string bookname;
public int price;
public string category;
}

static void Main(string[] args)
{
//Creating two book type variable
book language, database;

// Storing value in language variable
Console.Write("Enter book name:\t");
language.bookname = Console.ReadLine();
Console.Write("Enter book price:\t");
language.price = Convert.ToInt32(Console. ReadLine());
Console.Write("Enter book category:\t");
language.category = Console.ReadLine();

//Storing value in database variable
Console.Write("\n\nEnter book name:\t");
database.bookname = Console.ReadLine();
Console.Write("Enter book price:\t");
database.price = Convert.ToInt32(Console. ReadLine());
Console.Write("Enter book category:\t");
database.category = Console.ReadLine();

//Displaying value of language variable
Console.Write("\n\n===================");
Console.Write("\n\t\tLanguage\n");
Console.Write("===================\n\n");

Console.Write("Book Name:\t{0}", language.bookname);
Console.Write("\nBook Price:\t{0}", language.price);
Console.Write("\nBook Category:\t{0}", language.category);

Console.Write("\n\n==================\n");
Console.Write("\t\tDatabase\n");
Console.Write("====================\n\n");

Console.Write("Book Name:\t{0}", database.bookname);
Console.Write("\nBook Price:\t{0}", database.price);
Console.Write("\nBook Category:\t{0}", database.category);

Console.ReadLine();
}
}
}
Najna Abdulla12y ago
here S is a type of user defined type na????????
Najna Abdulla12y ago
here S is a type of user defined type na????????
Najna Abdulla12y ago
here S is a type of user defined type na????????