UriParserCaseInsensitive

var parser = new ODataUriParser(
    extModel.Model,
    ServiceRoot,
    new Uri("http://demo/odata.svc/People(1)/Pets/TestNS.Fish?$orderby=Color"));

var path = parser.ParsePath();
var clause = parser.ParseOrderBy();

var parser2 = new ODataUriParser(
    extModel.Model,
    ServiceRoot,
    new Uri("http://demo/odata.svc/people(1)/pets/testns.fish?$ORDERBY=color"))
{
    Resolver = new ODataUriResolver { EnableCaseInsensitive = true }
};

// Identical to path and clause
var path2 = parser2.ParsePath();
var clause2 = parser2.ParseOrderBy();

// Query option parser also supports case insensitive
var parser3 = new ODataQueryOptionParser(
    extModel.Model,
    extModel.Fish,
    extModel.PetSet,
    new Dictionary<string, string>
    {
        {"$orderby", "color"}
    })
{
    Resolver = new ODataUriResolver { EnableCaseInsensitive = true }
};
var clause3 = parser3.ParseOrderBy();