switch case c# string ignore case code example

Example 1: c# string equals ignore case

string.Equals(val, "astringvalue",  StringComparison.OrdinalIgnoreCase)

Example 2: switch case c# contains

Correct final syntax for [Mr. C]s answer.

With the release of VS2017RC and its C#7 support it works this way:

switch(message)
{
    case string a when a.Contains("test2"): return "no";
    case string b when b.Contains("test"): return "yes";
}
You should take care of the case ordering as the first match will be picked. That's why "test2" is placed prior to test.