如何使用C＃Winform在特定时间打开新表单

Question

我有一个表单，单击按钮时它是打开的。现在我想在PC的时间基础上打开它。当时间在上午10:00时，该表格应在MDI父级中自动打开。当时间在晚上04:00时，它将自动关闭。...

请帮助

Answer 1

要管理时间，您需要控制计时器。下面的示例代码将帮助您实现要求。

public partial class frmStackAnswers : Form
{
    Timer tmr = new Timer();    //Timer to manage time
    Form childForm;             //Child form to display

    public frmStackAnswers()
    {
        InitializeComponent();

        Load += frmStackAnswers_Load;
    }

    void frmStackAnswers_Load(object sender, EventArgs e)
    {
        tmr.Interval = 60000;
        tmr.Tick += tmr_Tick;
        tmr.Start();
    }

    void tmr_Tick(object sender, EventArgs e)
    {
        //Start child form between 10 AM to 4 PM if closed
        if (DateTime.Now.Hour > 10 && DateTime.Now.Hour < 16 && childForm == null)
        {
            childForm = new Form();
            childForm.Show();
        }
        //Close child form after 4 PM if it is opened
        else if (DateTime.Now.Hour > 16 && childForm != null)
        {
            childForm.Close();
            childForm = null;
        }
    }
}