What is the use of IS and AS in C#

Arvind Chauhan

11y1.3k.NET

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6 Replies

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Sumit Joshi11y ago
Accepted answer
Hi Arvind,

is operator : The is operator in C# is used to check the object type and it returns a bool value: true if the object is the same type and false if not.
For null objects, it returns false.

as operator : The as operator does the same job of is operator but the difference is instead of bool, it returns the object if they are compatible to that type, else it returns null.
If Find Helpful mark as Correct Answer.

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Anil Kumar11y ago
Check This Article
http://www.c-sharpcorner.com/uploadfile/abhikumarvatsa/the-is-and-as-operators-in-C-Sharp/
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Sumit Joshi11y ago
Thanks Buddy.. Happy Programming.
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Munesh Sharma11y ago
http://www.codeproject.com/Tips/532831/Use-of-Is-and-As-operators-in-Csharp
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Sujeet Suman11y ago
IS Operator: The is operator is used to check whether the run-time type of an object is compatible with a given type or not.

Example:
object num=10;
if (num is int)
{
   Response.Write("Num is integer");
}

AS Operator: The as operator is used to perform conversions between compatible types.

Example:
object obj = "This is string";
string str = string.Empty;
if (obj is string)
{
   str = obj as string;
   Response.Write(str);
}

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Francis Susaimichael11y ago
The below stack overflow discussion gives a detailed difference: http://stackoverflow.com/questions/3786361/difference-between-is-and-as-keyword Hop this helps!
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