Better understanding for Nullable types

Question

5.00/5 (1 vote)

See more:

Hello all,

I have some questions related to nullable types:

(0) The advantages and disadvantages of using nullable types?
(1) Why and when I should use a nullable type in my program?

Thank you for your responses.

Posted 8-Dec-11 5:58am

wonder-FOOL

Add a Solution

3 solutions

Solution 3

check this out:

Nullable Types in C#: Basic Introduction[^]

hope it helps :)

Posted 8-Dec-11 6:30am

Uday P.Singh

Comments

Monjurul Habib 8-Dec-11 15:35pm

5!

Uday P.Singh 9-Dec-11 0:59am

thank you :)

Solution 1

Better to look this [^] linkedin discussion
--NDK

Posted 8-Dec-11 6:02am

NandaKumer

Comments

wonder-FOOL 8-Dec-11 12:20pm

I think the link is broken.

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2011-12-08T06:05:00

This has a very strong smell of homework, so I'm not going to list any advantages or disadvantages - you can pick those out for your self!

A nullable type can represent the normal range of values for its underlying value type, plus an additional null value. For example, a Nullable Bool can contain true, false, and null. In this case, the null could be used to say "not specified". The ability to assign null to numeric and Boolean types is particularly useful when dealing with databases and other data types containing elements that may not be assigned a value. For example, a Boolean field in a database can store the values true or false, or it may be undefined. If you try to retrieve such a value into a normal bool value, you will get a run time error becasue bool cannot contain null.