vb.net can't use button.PerformClick after control Validated - vb.net

Question

in the form, i need check the textbox detail,so i use the Validated method.i also have a button to save form detail.and the button bind F10.
the text box Validated method
Private Sub txtReportCD_Validated(sender As Object, e As EventArgs) Handles txtReportCD.Validated
If txtReportCD.Text <> String.Empty Then
cboReportName.Value = txtReportCD.Text.Trim
Else
CommonMsg.showMsg("the CD not be empty")
End If
End Sub
the form keydown
Private Sub form_KeyDown(sender As Object, e As KeyEventArgs) Handles MyBase.KeyDown
If e.Alt AndAlso e.Control AndAlso e.Shift Then
Exit Sub
End If
Select Case e.KeyCode
'save data
Case Keys.F10
ClickButton(Me.btnSaveData, e)
e.Handled = True
End Select
End Sub
the ClickButton method
Private Sub ClickButton(ByVal btn As ButtonKdcCtrl, e As KeyEventArgs)
e.Handled = True
If e.Alt OrElse e.Control OrElse e.Shift Then
Exit Sub
End If
If btn.Enabled Then
btn.PerformClick()
End If
End Sub
the btnSaveData method
Private Sub btnSaveData_Click(sender As Object, e As EventArgs) Handles btnSaveData.Click
CommonMsg.showMsg("begin save data")
'do save form data
End Sub
when focus in txtReportCD,and i press F10 key. the form first do [btn.PerformClick], then do [txtReportCD_Validated] twice,last do [btnSaveData_Click].
but when focus in txtReportCD,and i click btnSavaData button.
the form first do [txtReportCD_Validated] once and not do [btnSaveData_Click].
how can i do,make when i press F10,the form do [txtReportCD_Validated] once
and the [btnSaveData_Click] not be call
PS: the txtReportCD text always empty.