File uploading in sharepoint site using C#

Question

Hi friends/experts ,

I have written the C# console application for uploading the excel file in sharepoint site,well it is working fine but the file is stored in Checkout mode.check out can make the file invisible to others.So i want to ckeck in the file programmatically using C# with webservice or it can be other ways if you can suggest.

I really appreciating if you can give solution or suggestions.thank you....