Tooltip is the small rectangular pop-up window that displays a description of a control when the user rests the pointer on the control.
This example requires a Form that contains a ToolTip control named ToolTip1 and three textbox and button like picture.

Example
Private Sub Form1_Load(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles MyBase.Load ToolTip1.SetToolTip(txtFName, "Enter Your first name") ToolTip1.SetToolTip(txtLName, "Enter Your last name") ToolTip1.SetToolTip(txtAge, "Enter Your age") ToolTip1.SetToolTip(btnSave, "Save record") End Sub