CODEWITHSUNDEEP
c#
Iggy Ma
Iggy Ma

Reputation: 23

C# Multi-Comparisons possible?

is it possible in some way to compare multiple variables to one constant in a if statement? It would be very helpful if instead of

if ( col.Name != "Organization" && col.Name != "Contacts" && col.Name != "Orders" ) { }

I could just say

if ( col.Name != "Organization" || "Contacts" || "Orders" ) { }

And I know I could use a list but in some instances I dont want to... Thanks!

Upvotes: 2

Views: 311

Answers (4)

Emil Lerch
Emil Lerch

Reputation: 4466

I second John's comment on extension methods. I'd do something like this:

public static class StringExtensions
{
    public static bool In(this string input, params string[] test)
    {
        foreach (var item in test)
            if (item.CompareTo(input) == 0)
                return true;
        return false;
    }
}

You can then call it like this:

        string hi = "foo";
        if (hi.In("foo", "bar")) {
            // Do stuff
        }

Upvotes: 1

John
John

Reputation: 1094

You could also add extension methods to the string class to make your comparisons less verbose. I'd go with the solution Anthony provides and stick it in an extension methods called EqualsAny or some such.

Upvotes: 1

Anthony Pegram
Anthony Pegram

Reputation: 126892

If you're just looking for a shortcut, you probably won't get much. ChaosPandion mentioned the switch statement, and here's something using an array.

if (new string[] { "Bar", "Baz", "Blah" }.Contains(foo))
{
    // do something
}

Upvotes: 5

ChaosPandion
ChaosPandion

Reputation: 78282

The switch statement is about as good as you'll get.

switch (col.Name)
{
    case "Organization":
    case "Contacts":
    case "Orders":
        break;
    default:
        break;
}

Upvotes: 4

Related Questions