using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        // Build a test list of KeyValuePairs.  In OASIS, this would be Lists.Get[name].KeyValuePairs

        var lstStuff = new List<KeyValuePair<string,string>>() {

            new KeyValuePair<string,string>( "dave", "shakespeare1" ),

            new KeyValuePair<string,string>( "Dave", "shakespeare" ),

            new KeyValuePair<string,string>( "shakespeare", "Shakespeare" ),

            new KeyValuePair<string,string>( "SHAKESPEARE", "DAVE" ),

            new KeyValuePair<string,string>( "SHAKESPEAREAN", "DAVID" ),

        };

        // Specify the search term here

        var sTerm = "shakespEAre";

        // This looks for the first match in either the key or value, both case-insensitively

        var kvpFirstMatch = lstStuff.Where( x => 

            x.Key  .Equals( sTerm, StringComparison.OrdinalIgnoreCase ) ||  

            x.Value.Equals( sTerm, StringComparison.OrdinalIgnoreCase )

        ).FirstOrDefault();

        // Spit out the match to the console area below

        if ( kvpFirstMatch.Key == null ) {

            Console.WriteLine( "NO MATCH" );

        }

        else {

            Console.WriteLine( String.Format( "Key: {0}, Value: {1}", kvpFirstMatch.Key, kvpFirstMatch.Value ));

        }                    

    }

}