Passing Parameters to a webmethod from client side.

I have one doubt on webservices call from client side using AJAX. I have one Method, but on that method i need to send arround 20 parameters. So , I made the same method that is accepting 20 parameters. But, it is creating confusion and looking not good also. It became a big method. So I thought that i will send one array of parameters. But, again by doing that I have to fix the location of parameters that will be again type of hard locating things. Can anybody suggest me any other alternative solution.


Thanks in advance,
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