-----------------------------------------------------------
New Message on BDOTNET
-----------------------------------------------------------
From: Nasha
Message 1 in Discussion
Hi All,
C# allows you to declare user defined conversions on classes or structs so that
classes or structs can be converted to the other type easily. Conversions can be
declared either as implicit, which occur automatically when required using the
"implicit" keyword, or they occur explicitly using the "explicit" key word which
require an explicit casting (i.e. type casting) of the object.
All methods which define conversions must be static.
Check out this example :
1. Create a console application.
2. Add this code given below.
3. Checkout the conversion functions i.e. the conversions of MyNameclass to int and
string.
4. Currently the conversion to string and int is "implicit" and hence we have not
typed casted the conversion of MyNameclass to string and int in the Main.
5. Compile the program and check the output.The out put should be "Namratha H Shah"
and "13".
Code :
public class MyNameclass
{
private string FirstName =null;
private string Initial =null;
private string LastName =null;
public MyNameclass()
{
FirstName ="Namratha";
Initial ="H";
LastName ="Shah";
}
static public implicit operator string(MyNameclass o)
{
return o.FirstName + " " + o.Initial + " " + o.LastName;
}
static public implicit operator int(MyNameclass o)
{
return o.FirstName.Length + o.Initial.Length + o.LastName.Length;
}
public static void Main()
{
string s = new MyNameclass();
int i = new MyNameclass();
Console.WriteLine(s);
Console.WriteLine(i);
Console.ReadLine();
}
}
6. Replace the implicit keyword with explicit and then compile ... the program will
not compile unless you explicitly type cast as follows :
string s = (string) new MyNameclass();
int i = (int) new MyNameclass();
7.Make the changes and recompile and execute the program. -- Please post your queries
and comments for my articles in the usergroup for the benefit of all. I hope this step
from my end is helpful to all of us.
Regards,
Namratha (Nasha)
-----------------------------------------------------------
To stop getting this e-mail, or change how often it arrives, go to your E-mail
Settings.
http://groups.msn.com/bdotnet/_emailsettings.msnw
Need help? If you've forgotten your password, please go to Passport Member Services.
http://groups.msn.com/_passportredir.msnw?ppmprop=help
For other questions or feedback, go to our Contact Us page.
http://groups.msn.com/contact
If you do not want to receive future e-mail from this MSN group, or if you received
this message by mistake, please click the "Remove" link below. On the pre-addressed
e-mail message that opens, simply click "Send". Your e-mail address will be deleted
from this group's mailing list.
mailto:[EMAIL PROTECTED]
