jayawant said:But in vb it have properties of app.taskvisible then it is possible in vb
There is no way to do this in .NET for a program which is already running. You can hide it from the task bar by using Window.ShowInTaskBar = False, but it will still be visible in the Applications list.
You could create your application as a Windows Service - services are not shown in the Applications list.
You could also write code to run the program in a new process.