In a food processor add lemon zest and juice, orange zest and juice, cider vinegar, parsley, basil. Turn on the processor and slowly add the olive oil until the mixture is blended together. Process until smooth and season with salt and pepper, to taste. Set aside.
Cook orzo in large pot of boiling salted water until tender but still firm to bite, about 10 minutes, stirring occasionally.
To a large mixing bowl add the raw corn kernels, diced celery, seeded and diced cucumber and whole cherry tomatoes.
Once orzo is cooked, drain and rinse under cold water; drain well. Add cooled orzo to bowl and toss. Add dressing to salad and toss again. Season with salt and pepper, if needed. Serve.