WPF隐藏关闭？

Question

我如何在wpf中执行此操作

VB.NET

   Private Sub FrmSettings_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
        e.Cancel = (e.CloseReason = Forms.CloseReason.UserClosing)
        Me.Hide()
    End Sub

C#

private void FrmSettings_FormClosing(object sender, System.Windows.Forms.FormClosingEventArgs e)
{
    e.Cancel = (e.CloseReason == Forms.CloseReason.UserClosing);
    this.Hide();
}

作为wpf的关闭事件只给了我e.Cancel并没有closereason :(

Answer 1

我要感谢Bob King的提示并将其代码添加为C#WPF.这个对我有用.我的应用程序是一个托盘图标类型.在WPF XAML表单代码后面:

protected override void OnInitialized(EventArgs e)
{
    base.OnInitialized(e);

    Application.Current.ShutdownMode = System.Windows.ShutdownMode.OnMainWindowClose;
}

private bool m_isExplicitClose = false;// Indicate if it is an explicit form close request from the user.

protected override void OnClosing(System.ComponentModel.CancelEventArgs e)

{

    base.OnClosing(e);

    if (m_isExplicitClose == false)//NOT a user close request? ... then hide
    {
        e.Cancel = true;
        this.Hide();
    }

}

private void OnTaskBarMenuItemExitClick(object sender, RoutedEventArgs e)

{            
    m_isExplicitClose = true;//Set this to unclock the Minimize on close 

    this.Close();
}

Answer 2

WPF的默认实现中没有等效项.您可以使用Windows钩子来获取原因.

以下文章详细说明了如何执行此操作:http://social.msdn.microsoft.com/forums/en-US/wpf/thread/549a4bbb-e77b-4c5a-b724-07996774c60a/

Answer 3

我不确定我理解WinForms方法解决了什么问题.

总是这样做是不是更好:

Protected Overrides Sub OnClosing(ByVal e As System.ComponentModel.CancelEventArgs)
    e.Cancel = True
    Me.Hide()
End Sub

然后在您的应用程序中设置它？

Application.Current.ShutdownMode = System.Windows.ShutdownMode.OnMainWindowClose

这样,无论何时您的孩子窗户关闭,您都可以将它们保持在一起以便以后更快地显示,但是当主窗口关闭时(即退出,关机等),您的应用仍会关闭.