Question

我正在使用vb.net。我按如下方式添加日期选择器

Friend WithEvents dtpReportDate As System.Windows.Forms.DateTimePicker

默认日期选择器有左箭头和右箭头，可让您浏览上个月和下个月。我为日期选择器valuechanged事件添加了一个处理程序：

AddHandler dtpReportDate.ValueChanged, AddressOf dtpReportDateChanged

Private Sub dtpReportDateChanged（ByVal sender As Object，ByVal e As System.EventArgs）

'在这里做点什么

End Sub

问题是每当我点击向左箭头或向右箭头更改月份时，都会触发dptReportDateChanged。我不希望这种情况发生。我想要的是，在找到一个月后，我双击日期来触发事件。

非常感谢！

Answer 1

试试这个：

Private Sub DateTimePicker1_ValueChanged(ByVal sender As Object, ByVal e As EventArgs) Handles DateTimePicker1.ValueChanged
  Me.Text = DateTimePicker1.Value.ToString
End Sub

Private Sub DateTimePicker1_DropDown(ByVal sender As Object, ByVal e As EventArgs) Handles DateTimePicker1.DropDown
  RemoveHandler DateTimePicker1.ValueChanged, AddressOf DateTimePicker1_ValueChanged
End Sub

Private Sub DateTimePicker1_CloseUp(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.CloseUp
  AddHandler DateTimePicker1.ValueChanged, AddressOf DateTimePicker1_ValueChanged
  Call DateTimePicker1_ValueChanged(sender, EventArgs.Empty)
End Sub

Answer 2

或者您可以触发CloseUp事件而不是ValueChanged。这对我来说足够好了。

如何在日期选择器中浏览月份时不触发datepicker.valuechanged事件

2 个答案: