If CheckBox1.Value = True And (ComboBox3.Value = "1" Or ComboBox5.Value = "1" Or ComboBox7.Value = "1" Or ComboBox9.Value = "1") Then
MsgBox "L'adresse 1 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox2.Value = True And (ComboBox3.Value = "2" Or ComboBox5.Value = "2" Or ComboBox7.Value = "2" Or ComboBox9.Value = "2") Then
MsgBox "L'adresse 2 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox3.Value = True And (ComboBox3.Value = "3" Or ComboBox5.Value = "3" Or ComboBox7.Value = "3" Or ComboBox9.Value = "3") Then
MsgBox "L'adresse 3 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox4.Value = True And (ComboBox3.Value = "4" Or ComboBox5.Value = "4" Or ComboBox7.Value = "4" Or ComboBox9.Value = "4") Then
MsgBox "L'adresse 4 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox5.Value = True And (ComboBox3.Value = "5" Or ComboBox5.Value = "5" Or ComboBox7.Value = "5" Or ComboBox9.Value = "5") Then
MsgBox "L'adresse 5 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox6.Value = True And (ComboBox3.Value = "6" Or ComboBox5.Value = "6" Or ComboBox7.Value = "6" Or ComboBox9.Value = "6") Then
MsgBox "L'adresse 6 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox7.Value = True And (ComboBox3.Value = "7" Or ComboBox5.Value = "7" Or ComboBox7.Value = "7" Or ComboBox9.Value = "7") Then
MsgBox "L'adresse 7 est déjà utilisée", vbCritical
Exit Sub
ElseIf CheckBox8.Value = True And (ComboBox3.Value = "8" Or ComboBox5.Value = "8" Or ComboBox7.Value = "8" Or ComboBox9.Value = "8") Then
MsgBox "L'adresse 8 est déjà utilisée", vbCritical
Exit Sub
Else: CommandButton2.Enabled = True
CommandButton2.Visible = True
End If