I'm looking for a simple way to discern if a string contains any part of another string (be that regex, built in function I don't know about, etc...). For Example:

string a = "unicorn";
string b = "cornholio";
string c = "ornament";
string d = "elephant";

if (a <comparison> b)
{
    // match found ("corn" from 'unicorn' matched "corn" from 'cornholio')
}

if (a <comparison> c)
{
    // match found ("orn" from 'unicorn' matched "orn" from 'ornament')
}

if (a <comparison> d)
{
    // this will not match
}

something like if (a.ContainsAnyPartOf(b)) would be too much to hope for.

Also, I only have access to .NET 2.0.

Thanks in advance!