Dragging Label, TextBox and Button controls from the Visual Studio Toolbox to your form designer.

Adding a click event handler to the Ping button allows you to ping an ip address.
private void btnPing_Click(object sender, EventArgs e)
{
Ping ping = new Ping();
PingReply reply = ping.Send(txtIP.Text, 1000);
MessageBox.Show(reply.Status.ToString(), "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
And don't forget to include the namespace below to your form.
using System.Net.NetworkInformation;
The PING class determines whether a remote computer can be accessed over the network. It provides the same functionality as the PING.EXE command line tool.