请问如何设置离开日期必须大于到来日期

Question

我放了两个datetimepicker控件 一个是到达日期，一个是离开日期，如何写代码来保证离开日期必须在到来日期之后。谢谢~

Answer 1

web还是winform
web建议使用 My97DatePicker
winform自己写程序判断

Answer 2

我用的是winform 能不能帮忙写一下具体点的 我是个新手 在做课设 谢谢大家

Answer 3

if (this.dateTimePicker1.Value.Date > this.dateTimePicker2.Value.Date)
            {
                MessageBox.Show("不能大");
            }

Answer 4

datetimepicker控件当然是window程序，你连比较大小都不会？去看MSDN...

Answer 5

    private void dateTimePicker2_ValueChanged(object sender, EventArgs e)
        {
            dateTimePicker1.MaxDate = dateTimePicker2.Value;
        }        private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
        {
            dateTimePicker2.MinDate = dateTimePicker1.Value;
        } 
      

Answer 6

if(this.dtpStart.Value>this.dtpEnd.Value)
{
   this.dtpEnd.Value=this.dtpStart.Value;
}

Answer 7

private void dateTimePicker2_ValueChanged(object sender, EventArgs e)
{
if (this.dateTimePicker1.Value.Date > this.dateTimePicker2.Value.Date)
this.dateTimePicker2.Value="";
}