单击后保持打开上下文菜单

Question

我有带有上下文菜单的数据网格。它以编程方式初始化：

contextMenu = new ContextMenu();

foreach (var col in this.Columns)
{
    var checkBox = new MenuItem()
    {
        Header = col.Header
    };
    Binding myBinding = new Binding("Visibility");
    myBinding.Mode = BindingMode.TwoWay;
    myBinding.Converter = new IsCheckedToVisibilityConverter();
    checkBox.DataContext = col;
    checkBox.SetBinding(MenuItem.IsCheckedProperty, myBinding);
    checkBox.Click += checkBox_Click;
    checkBox.Checked += checkBox_Checked;
    checkBox.Unchecked += checkBox_Unchecked;
    contextMenu.Items.Add(checkBox);

}

效果很好，但我想在选中\取消选中菜单项后保持打开上下文菜单。有什么想法吗？

Answer 1

添加checkBox.StaysOpenOnClick = true; 后按预期工作

contextMenu = new ContextMenu();

            foreach (var col in this.Columns)
            {
                var checkBox = new MenuItem()
                {
                    Header = col.Header
                };
                //binding
                Binding myBinding = new Binding("Visibility");
                myBinding.Mode = BindingMode.TwoWay;
                myBinding.Converter = new IsCheckedToVisibilityConverter();
                checkBox.DataContext = col;
                checkBox.SetBinding(MenuItem.IsCheckedProperty, myBinding);
                checkBox.Click += checkBox_Click;
                checkBox.Checked += checkBox_Checked;
                checkBox.Unchecked += checkBox_Unchecked;
                checkBox.StaysOpenOnClick = true;
                contextMenu.Items.Add(checkBox);

            }

Answer 2

你可以试试：

private bool close= true; 

private void CheckBox1_CheckedChanged(Object sender, EventArgs e)
{
 close= false; 
}

private void contextMenu_Closing(object sender, ToolStripDropDownClosingEventArgs e)
{
  e.Cancel = !close;
  CloseContextMenu = true;
}