C# Case insensitive string comparison [duplicate]

Question

I have a list that holds a few strings(names). For this example. It will hold:

• TeSt1
• TeSt2
• TeSt3

And I'm trying to check if that list has one of those. And I'm doing this like this at the moment:

if (list.Contains(test2))
{

}

But I need it to be case insensitive.. But how can I do that? in an if statement.

Answer 1

The Contains method has an overload that accepts an IEqualityComparer. You can give it one by doing the following:

 if (list.Contains(test2, StringComparer.OrdinalIgnoreCase))  
 {  
     // do something  
 }

Answer 2

IndexOf has a parameter for case insensitive search

culture.CompareInfo.IndexOf(toSearch, word, CompareOptions.IgnoreCase) 

where culture is the instance of CultureInfo describing the language that the text is written in.

You can loop through the list and see if it each list entry matches the search.

Answer 3

Make your list lower case......and

if (list.Contains(test2.ToLower()))
{

}