create a class in class file:
public class Col<T>
{
T t;
public T Val { get { return t; } set { t = value; } }
}
in the front end create an instance of this class
/create a string version of our generic class
Col<string> mystring = new Col<string>();
//set the value
mystring.Val = “hello”;
//output that value
Response.Write(mystring.Val);
//output the value’s type
Response.Write(mystring.Val.GetType());
//create another instance of our generic class, using a different type
Col<int> myint = new Col<int>();
//load the value
myint.Val = 5;
//output the value
Response.Write(myint.Val);
//output the value’s type
Response.Write(myint.Val.GetType());
example 2:
Using the code
I tried with our simple address book example in this article. Address class contains properties of DoorNo (int), StreetName (string), CityName (string), and PhoneNumber (int). In my implementation part, I may use all this properties to the object or some may be missed out:
class Address { int _DoorNo; public int DoorNo { get { return _DoorNo; } set { _DoorNo = value; } } string _StreetName; public string StreetName { get { return _StreetName; } set { _StreetName = value; } } string _City; public string City { get { return _City; } set { _City = value; } } string _State; public string State { get { return _State; } set { _State = value; } } int _Phone; public int PhoneNo { get { return _Phone; } set { _Phone = value; } } public Address() { } public Address(int DoorNumber, string StreetName, string CityName) { this.DoorNo = DoorNumber; this.StreetName = StreetName; this.City = CityName; this.PhoneNo = 0; } public Address(int DoorNumber, string StreetName, string CityName, int PhoneNumber) { this.DoorNo = DoorNumber; this.StreetName = StreetName; this.City = CityName; this.PhoneNo = PhoneNumber; } } // Main class as follows: class Program { static void Main(string[] args) { List<Address> myAddress = new List<Address>(); myAddress.Add(new Address(1,"New Street", "Chennai")); myAddress.Add(new Address(2, "Second Main Road, TNHB", "Chennai", 866413553)); myAddress.Add(new Address(3, "New Street", "Bangalore")); myAddress.Add(new Address(4, "Second Main Road, TNHB", "Bangalore", 885634367)); myAddress.Add(new Address(5, "New Street", "Pune")); myAddress.Add(new Address(6, "Second Main Road, TNHB", "Pune", 433243664)); myAddress.Add(new Address(7, "New Street", "Gurgaon")); myAddress.Add(new Address(8, "Second Main Road, TNHB", "Gurgaon", 564778634)); foreach (Address a in myAddress) { Console.WriteLine("New Address Entry follows: \n"); Console.WriteLine("Door Number : " + a.DoorNo); Console.WriteLine("Street Name :" + a.StreetName); Console.WriteLine("City :" + a.City); Console.WriteLine("Phone Number:" + a.PhoneNo+"\n\n"); } Console.ReadLine(); } } ref:http://www.codeproject.com/KB/cs/Generics_in_C__20.aspx