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Code With Vb .Net 117
Protected Sub btnsubmit_Click(ByVal sender As
Object, ByVal e As System.EventArgs) Handles
btnsubmit.Click
Const rate As Double = 100
txtcm.Text = txtmeter.Text * rate
End Sub
11.3 Validation Controls
Validation controls are used to validate the data of
an input control or a validator is a control that
checks one input control for a specific type of error
condition and displays a description of that
problem. These are the following validation
controls as shown in Table11.3.
