【单选题】

在运行阶段，要在文本框Text1获得焦点时选中文本框中所有内容，对应的事件过程是

A、Private Sub Text1_GotFocus()
Text1.SelStart=0
Text1.SelLength=Len(Text1.Text)
End Sub B、Private Sub Text1_LostFocus()
Text1.SelStart=0
Text1.SelLength=Len(Text1.Text)
End Sub
C、Private Sub Text1_Change()
Text1.SelStart=0
Text1.SelLength=Len(Text1.Text)
End Sub D、Private Sub Text1_SetFocus()
Text.SelStart=0
Text1.SelLength=Len(Text1.Text)
End Sub