Purpose Of === in c#

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2.33/5 (2 votes)

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C#

ASP.NET

C#4.0

I m new to c#. i need to know purpose of === operation in c#. can anyone explain me simple. Thanks n Advance.

Posted 27-Jan-14 3:20am

tnkarthi

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Pete O'Hanlon · Accepted Answer · 2014-01-27T03:28:00

Solution 3

It looks like you're mistaking JavaScript for C#. I suspect that you have seen C# code injecting JavaScript into a web client page - hence where you would have seen ===. In JavaScript, the === operator tests for identity equality. No type conversion is done with this operator.

Posted 27-Jan-14 3:28am

Pete O'Hanlon

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2014-01-27T03:31:00

Solution 4

There is no such operator in C#. Refer - C# Operators[^], which list all the available operators.

But this operator is available in JavaScript.
Refer - JavaScript Comparison and Logical Operators[^]

Quote:

=== exactly equal to (equal value and equal type)

x==="5" false
x===5 true

So, it checks the DataType as well as value.

Posted 27-Jan-14 3:31am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

Sergey Alexandrovich Kryukov 1-Apr-15 12:26pm

Sure, a 5.
—SA

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Apr-15 3:25am

Thanks man. :)

Ron Beyer · Accepted Answer · 2014-01-27T03:24:00

Solution 1

There is no === operator in c#.

Here is a list of all C# operators: http://msdn.microsoft.com/en-us/library/6a71f45d.aspx[^]

Posted 27-Jan-14 3:24am

Ron Beyer

phil.o · Accepted Answer · 2014-01-27T03:27:00

Solution 2

There is no === operator in C#.

There is an = operator (= Operator (C# Reference)[^]) which is an assignment operator

There is an == operator (== Operator (C# Reference)[^]) which is an equality operator

But there is definitely no === operator. Where did you get it from?

Posted 27-Jan-14 3:27am

phil.o

Karthik_Mahalingam · Accepted Answer · 2014-01-27T03:31:00

Solution 5

=== Operator is not used in C#,
it is used in Javascript as === Operator [^]

Posted 27-Jan-14 3:31am

Karthik_Mahalingam

Peter Leow · Accepted Answer · 2014-01-27T03:43:00

Solution 6

Yes, there are no === in C#, but I just to elaborate more for sharing and learning purpose:
"===" exists In PHP and JavaScript, the former is called "Identical" while the later "Strict Equal"
In PHP and JavaScript, "===" returns true if the left side is equal to the right side and they are of the same type, e.g. 2 === "2" returns false;
In PHP and JavaScript, "==" returns true as long as they are equal even they are of different type e.g. 2 == "2" return true

Posted 27-Jan-14 3:43am

Peter Leow

Updated 27-Jan-14 3:52am

v2

Comments

Ron Beyer 27-Jan-14 9:45am

"In contrast, "==" returns true as long as they are equal even they are of different type e.g. 2 == "2" return true"

Maybe in Java or PHP, but not in C#, you may want to clarify that.

Peter Leow 27-Jan-14 9:54am

I was referring to PHP and JavaScript. I have amended it to make it clearer. Thanks for pointing out.