在Windows应用程序中使用csharp进行Datepicker验证

问题描述

我有两个日期选择器，一个有开始日期，另一个有结束日期。



开始日期datepicker1）结束日期（datepicker2）



当我点击datepicker1中的第7个星期一日期时，自动12月星期六显示在datepicker2中。



工作正常。



i有一个验证datepicker1怎么办。



在datepicker1中总是用户只选择星期一，如果用户选择任何其他日期将显示消息选择星期一。



如何在datepicker中的csharp中进行验证。

i have two date picker, one has start date and another one has End date.

Start date datepicker1) End date(datepicker2)

when i click the 7th Monday date in datepicker1 automatically 12th Saturday is displayed in the datepicker2.

that is working fine.

i have one validation datepicker1 how to do.

in the datepicker1 always user choose the day Monday only, if user choose any other day will display the message choose the Monday .

how to do that validation in csharp in datepicker.

推荐答案

private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
       {
           DateTime dt = dateTimePicker1.Value;

           if (dt.DayOfWeek != DayOfWeek.Monday)
           {
               while (dt.DayOfWeek != DayOfWeek.Monday)
               {
                   dt = dt.AddDays(-1);
               }
           }

           dateTimePicker1.Value = dt;
       }

P.S。我不建议这样做，因为这是非常脏的方法。我建议你在更改时验证日期并让用户知道问题，以便他可以选择星期一。

P.S. i would not recommend doing this, as this is pretty dirty approach. I would suggest you validate the date when changed and let the user know the problem so that he can select a Monday.

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