Question

我的winform中有2个dateTimePickers。第一个dateTimePickers用于开始日期，另一个用于结束日期，现在我只想从那些dateTimePickers输入开始日期@结束日期，我自动在文本框中获取持续时间。

Answer 1

您可以通过减去两个日期来计算持续时间（在.NET中称为TimeSpan）：

TimeSpan ts = dateTimePicker2.Value - dateTimePicker1.Value;

您可以获得总秒数，例如：

double seconds = ts.TotalSeconds;

设置一个这样的文本框（您必须连接任何事件才能触发此操作，例如DateTimePicker中的ValueChanged）：

textBox1.Text = seconds.ToString("N0");

Answer 2

您可以使用DateTime Subtract方法返回TimeSpan，然后使用TimeSpan类方法将Result转换为Day或Month或year

祝你好运

Answer 3

这是一种方法：

public partial class CalculateDuration : Form
{
    public CalculateDuration()
    {
        InitializeComponent();


    }

    //Computes the duration in days
    private void Duration()
    {

        if (this.dateTimePicker1.Value.Day > this.dateTimePicker2.Value.Day)
        {
            if (this.dateTimePicker1.Value.Month == this.dateTimePicker2.Value.Month)
            {
                this.durationTextBox.Text = (-(this.dateTimePicker1.Value.Day - this.dateTimePicker2.Value.Day)).ToString();
            }
            else
            {
                this.durationTextBox.Text = (this.dateTimePicker1.Value.Day - this.dateTimePicker2.Value.Day).ToString();
            }

        }
        else
        {
            this.durationTextBox.Text = (this.dateTimePicker2.Value.Day - this.dateTimePicker1.Value.Day).ToString();
        }
    }

    //This events is trigered when the value of datetimepicker is changed
    private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
    {
        Duration();
    }

    private void dateTimePicker2_ValueChanged(object sender, EventArgs e)
    {
        Duration();
    }
}

如何计算持续时间？

3 个答案: