Hi, You can consume web service in your android application with ksoap object being included in your libs folder and to know how to use dotnet web services in android app follow this
link.
As far I understand from your query is that "You are asking whether we can achieve this or not using any kind of webservices?" - Yes, we can achieve this by using a webservices and one more thing I didn't understand is that
"client cannot send any request..but server send response to client(delete item) based on ip".
In above scenario which is client? Android or PC? What do u mean by "ip" from the above statement? Is it short form for "Input" or "IP Address".
Please specify the question clearly so that it is easier for others to answer quickly and you will get the sure and pure answers.
Thanks
Ganesh