Getting number from text box

[Tunnix]

How do i obtain integer number from a text box?

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[AWS]

Only allow integer as shown below.

Public Class Form1

    Private Sub TextBox1_KeyPress(sender As Object, e As KeyPressEventArgs) Handles TextBox1.KeyPress

        If System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "[^0-9\s]") Then

            e.Handled = True

        End If

    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        If Not String.IsNullOrWhiteSpace(TextBox1.Text) Then

            Dim value As Integer = CInt(TextBox1.Text)

            MessageBox.Show($"{value}")

        End If

    End Sub

End Class