如果他在datetimepicker中选择的日期是c＃中的假期，我如何向用户显示按摩 [英] How i show massage to the user if the day that he choose in datetimepicker is holiday in c#

问题描述

当用户选择时喜欢这一天19-2-2016是星期五并向用户显示消息告诉他

这一天是星期五和它的假期



我尝试了什么：



i希望在C＃WinApp

When User choose Like this day 19-2-2016 is Friday and show message to the user tell him
this day is Friday and its Holiday

What I have tried:

i want this using datetimepicker in C#WinApp

推荐答案

1）定义假期课程。例如。开始日期，结束日期和名称。

2）定义一个包含1）所有假日对象的类，并提供添加假日的方法，并检查某个日期是否属于某个假日。然后，该方法将遍历所有存储的假期，并检查storedHoliday.StartingDate< = dateInQuestion< = storedHoliday.EndingDate，如果找到命中，则返回true，可选择使用假期的名称（例如作为out-parameter） 。

1) Define a class for holidays. E.g. starting-date, ending-date and name.
2) Define a class that holds all holiday-objects of 1) and offers methods to add a holiday and to check whether a certain date falls into some holiday. That method would then loop over all stored holidays and check for storedHoliday.StartingDate <= dateInQuestion <= storedHoliday.EndingDate and return true if it finds a hit, maybe optionally with the name of the holidays (e.g. as an out-parameter).

尝试使用以下代码：



添加 ValueChanged 事件到的DateTimePicker。

Try with below code:

Add ValueChanged event to DateTimePicker.

this.dateTimePicker1.ValueChanged += new System.EventHandler(this.dateTimePicker1_ValueChanged);

然后添加以下代码来处理 ValueChanged 事件：

Then add following code to handle ValueChanged event:

private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
{
        // Declare holiday list 
	string[] holidayList = { "03/01/2016", "02/20/2016", "02/17/2016" };

        // Check if selected value is holiday and display message
	if (holidayList.Contains(dateTimePicker1.Value.ToString("MM/dd/yyyy")))
	{
		MessageBox.Show("Selected date is holiday");
	}

    // Check if selected value is Friday then display message
    if (dateTimePicker1.Value.ToString("dddd") == "Friday")
    {
	  MessageBox.Show("Selected date is holiday");
    }
}

尝试

try

if (datetimepicker1.Value.ToString("ddd") == "Fri")
{
MessageBox.Show("Holiday");
}

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