How can I get the data type of a variable in C#?

Question

How can I find out what data type some variable is holding? (e.g. int, string, char, etc.)

I have something like this now:

using System;
using System         


        

Answer 1

Generally speaking, you'll hardly ever need to do type comparisons unless you're doing something with reflection or interfaces. Nonetheless:

If you know the type you want to compare it with, use the is or as operators:

if( unknownObject is TypeIKnow ) { // run code here

The as operator performs a cast that returns null if it fails rather than an exception:

TypeIKnow typed = unknownObject as TypeIKnow;

If you don't know the type and just want runtime type information, use the .GetType() method:

Type typeInformation = unknownObject.GetType();

In newer versions of C#, you can use the is operator to declare a variable without needing to use as:

if( unknownObject is TypeIKnow knownObject ) {
    knownObject.SomeMember();
}

Previously you would have to do this:

TypeIKnow knownObject;
if( (knownObject = unknownObject as TypeIKnow) != null ) {
    knownObject.SomeMember();
}

Answer 2

Its Very simple

variable.GetType().Name

it will return your datatype of your variable