how to load data when mouse scrolling down in asp.net

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C#

ASP.NET

SQL

Hi,

I have 3000 companies in my database table.

later stages Companies are increased. I mean rows are increased.

I want display total records.

I have write query like this

Select * from company.

But initially load all records, It will take more time for retrieving and displaying,

Here my requirement is initially it will load 20 companies When I scroll down load next 20, later I will scroll down load next 20 records etc...



Is there any possible ways,
Please help me.

Thank you....