public void Test_05_TestGetValue( )
        {
            FileFilters filter = new FileFilters( );
            string filters = ( "Documents (*.docx; *.doc)|*.docx; *.doc||" );

            int pos = 0;
            string description = filter.GetValue( ref pos, filters );
            Assert.AreEqual( "Documents (*.docx; *.doc)", description );

            string value = filter.GetValue( ref pos, filters);
            Assert.AreEqual( "*.docx; *.doc", value );
        }