string query1String, query2String; //Linq查詢 using (var context = new TestDB()) { var result = context.Users.Where(c => c.Name == "admin"); query1String = result.Expression.ToString(); } //Lambda查詢 using (var context = new TestDB()) { var result = from c in context.Users where c.Name == "admin" select c; query2String = result.Expression.ToString(); } //混合查詢 using (var context = new TestDB()) { var result = (from c in context.Users where c.Name == "admin" select c.Age).Max(); } Assert.AreEqual(query1String, query2String);