yeah...try to take out the spark plugs and dry it under the sun. Open the car bonnet and let it dry if your car is outside.
As for the interior, you can use vacuum to suck out the water.
If that still doesn't work then you have no choice but to tow it to workshop. If you are going to get third party repairman, make sure it is someone your trust. Cause a lot of car workshop like to cheat people.
My car flooded. Cannot start. Proton Saga BLM., How much is the service? Anyone help?