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Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
choice()
If Not IsNumeric(TextBox3.Text) Then
MsgBox("ÇëÊäÈëÒ»¸öÊý×Ö¡")
ElseIf Val(TextBox3.Text) = Val(TextBox4.Text) Then
Static a As Integer
a = a + 1
Label5.Text = "ÕýÈ·¸öÊý:" & a
Label4.ForeColor = Color.Blue
Dim i As Integer = CInt(Int((4 * Rnd()) + 1))
If i = 1 Then
Label4.Text = "Very good!"
End If
If i = 2 Then
Label4.Text = "Excellent!"
End If
If i = 3 Then
Label4.Text = "Nice Work!"
End If
If
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