Question

我尝试了下面的代码，但没有正常工作。使用wpf使用屏蔽文本框textchanged两次计算总时间。请帮帮我

xaml page：

<msk:MaskedTextBox Grid.Row="0" Grid.Column="3" Margin="5,5,5,5" Height="30" Text="{Binding Path=FromTime}" Name="txt_starttime" Mask="00:00" HorizontalAlignment="Center" VerticalAlignment="Center" TextChanged="txt_totalhours_TextChanged" />

<msk:MaskedTextBox Grid.Row="0" Grid.Column="4" Margin="5,5,5,5" Height="30" Text="{Binding Path=ToTime}" Name="txt_endtime" Mask="00:00" HorizontalAlignment="Center" VerticalAlignment="Center" TextChanged="txt_totalhours_TextChanged"/>
<TextBox Grid.Row="0" Grid.Column="5" Margin="5,5,5,5" Text="{Binding Path=TotalHours}" Name="txt_totalhours" TextChanged="txt_totalhours_TextChanged"/>

代码背后的代码：

private void txt_totalhours_TextChanged(object sender, TextChangedEventArgs e)
    {
        if (null == txt_totalhours || null == txt_starttime || null == txt_endtime)
            return;
        //if (lb_weekDays.SelectedItems.Count > 0)
        //{
        string StartTimeText = txt_starttime.Text;
        string EndTimeText = txt_endtime.Text;
        string[] Startparts = StartTimeText.Split(':');
        string[] Endparts = EndTimeText.Split(':');
        var resultStartHour = Int32.MinValue;
        var isIntstarttimeHour = Int32.TryParse(Startparts[0], out resultStartHour);

        var resultEndHour = Int32.MinValue;
        var isIntendtimeHour = Int32.TryParse(Endparts[0], out resultEndHour);

        var resultHour = isIntstarttimeHour ? ((isIntendtimeHour ? (resultEndHour - resultStartHour) : resultStartHour)) : (isIntendtimeHour ? resultEndHour : 0);
        int resHour = resultHour;

        var resultStartMin = Int32.MinValue;
        var isIntstarttimeMin = Int32.TryParse(Startparts[1], out resultStartMin);

        var resultEndMin = Int32.MinValue;
        var isIntendtimeMin = Int32.TryParse(Endparts[1], out resultEndMin);

        var resultMin = isIntstarttimeMin ? ((isIntendtimeMin ? (resultEndMin - resultStartMin) : resultStartMin)) : (isIntendtimeMin ? resultEndMin : 0);
        int resMin = resultMin;
        int lbCount = lb_weekDays.SelectedItems.Count;

        int ab = 0, abc = 0;
        ab = resHour * lbCount;
        abc = resMin * lbCount;
        if (abc > 59)
        {
            int quotient = 0;
            quotient = abc / 60;
            ab = ab + quotient;

            int remainder = 0;
            remainder = abc % 60;
            abc = remainder;
        }
        txt_totalhours.Text = ab + ":" + abc;
        //}
        //else
        //{
        //    MessageBox.Show("Please Select WeekDays Before Enter Time");
        //}

    }

Answer 1

您应该使用TimeSpan为您做繁重的工作。使用开始和结束时间创建两个DateTime变量，并使用生成的TimeSpan从较晚的时间减去较早的时间，以获得两者之间的总小时数。

var dt1 = DateTime.Now.AddHours(-2);
var dt2 = DateTime.Now.AddHours(1.55);
var total = (dt2 - dt1).TotalHours;

计算在wpf中使用Masked文本框两次之间的总小时数

1 个答案: