How to check if an object is null?

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1.44/5 (2 votes)

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Hey I have an array of class:

C#

Empty = new EmptyPage[100];
for (int i = 0; i < 100; i++)
    Empty[i] = null;

If I do: if(Empty[0]==null) ==> always returns false;

What is the best way to check if an object is not defined or it is null?

Posted 25-Dec-12 2:35am

missak boyajian

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Comments

Zoltán Zörgő 25-Dec-12 8:49am

But it should work like this. What's the rest of the code?

missak boyajian 25-Dec-12 12:38pm

Thanks. There was something wrong in the code.

Akinmade Bond 25-Dec-12 8:58am

What is 'Empty'?

Oleksandr Kulchytskyi 25-Dec-12 9:02am

I don't believe you!! if(Empty[0]==null) must work!!!

Oleksandr Kulchytskyi 25-Dec-12 9:03am

Empty = new EmptyPage[100];??? Provide community with full list of code!!!

rizwan muhammed khan gouri 22-Jan-13 8:51am

Hello paste Your Complete code ??????????/

missak boyajian 22-Jan-13 14:54pm

Hey it was working. The problem was elsewhere.

2 solutions

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Abhinav S · Answer 1 · 2012-12-25T04:22:00

Solution 2

Your code looks ok.

To check for null you can always look at the null coalese operator[^].

Posted 25-Dec-12 4:22am

Abhinav S

Dheerendra Dwivedi · Answer 2 · 2012-12-25T08:02:00

Solution 3

apply If Else

C#

if(Empty[i].Equals(null))
{
}

Posted 25-Dec-12 8:02am

Dheerendra Dwivedi

Updated 21-Jan-13 15:58pm

v2

Comments

Sergey Alexandrovich Kryukov 25-Dec-12 15:40pm

I cannot believe that someone else will be able to suggest such gibberish.
The answer is: someObject == null. I'm really sorry, Dheerendra, but the vote is 1...
By the way, in general case, ReferencesEqual should be used, as equality can be overridden.
—SA