if condition multiple values

Let’s say i need to satisfy if condition based on multiple values.

For example, i would like to display some message limited to some users.

Let’s say i’ve {A,B,C,D,E,F} users

i would like to display Hello User for only {A,B,C} users

Normally we write if condition like

if(user == “A” || user ==”B” || user ==”C”)

{

<h2> Hello User </h2>

}

Instead we can write like this

if(new string[]{“A”,”B”,”C”}.Contains(user))
{
<h2> Hello User </h2>

}

Here, we have mentioned all values inside a string collection and comparing string collection with input user.
If user value exists in string collection then if condition will get satisfied.
That’s it Folks!!!