inputbox read vbyesno

Hi all how can i read if user  press cancelbutton on inputbox?

if cancel or no, then exit sub
but how can i read the cancel button?

respuesta = InputBox("Que nombre le quiere dar a la espec " & sptempo & " ?", vbYesNo)
        If respuesta = "" Or vbNo Then
            Exit Sub


            Dim bus As String = "update P" & proyecto & " set spec='" & respuesta & "' where spec='" & sptempo & "' "

            Dim cmd2 As New OleDbCommand(bus, cn)
            renomb = (cmd2.ExecuteScalar())


            MsgBox("SPEC renombrada correctamente", MsgBoxStyle.Information)
            sptempo = respuesta
            Label1.Text = "PROYECTO:  " + proyecto + "ESPECIFICACION:  " + sptempo
        End If

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Om PrakashCommented:
If respuesta = "" Or vbNo Or vbCancel Then
instead of
If respuesta = "" Or vbNo Then

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ErnestoAuthor Commented:
do nothing if put that condition alwais go to exit sub
Om PrakashCommented:
You can just set the default value to a space then trim it off when you read the value.
string Result = Microsoft.VisualBasic.Interaction.InputBox(Prompt, Title, " ", 150, 150);
/* check to see it it's an empty string indicating they canceled. */
            if (Result != "")
ErnestoAuthor Commented:
even the value isnt "" i need if press cancel button halt
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