单击后MVC补充工具栏不会保持活动状态

Question

我正在使用MVC.net，在单击后很难通过引导侧边栏li保持活动状态，并且在我单击时一直刷新页面。

但是我仍然尝试使用下面提供的示例，单击后仍然无法激活。

我从链接中尝试了几个答案单击 option1 here 然后点击 option2 here

下面是我的代码：

CurrentControllerActiveClassName：

[assembly: ExportRenderer(typeof(MyPicker), typeof(MyPickerRenderer))]
namespace xxx.iOS
{
   public class MyPickerRenderer:PickerRenderer,IUIPickerViewDelegate,IUIPickerViewDataSource
   {

    string SelectedValue;

    public MyPickerRenderer()
    {
    }

    public nint GetComponentCount(UIPickerView pickerView)
    {
        return 1;
    }

    public nint GetRowsInComponent(UIPickerView pickerView, nint component)
    {
        return Element.Items.Count;
    }

    [Export("pickerView:viewForRow:forComponent:reusingView:")]
    public UIView GetView(UIPickerView pickerView, nint row, nint component, UIView view)
    {

        UILabel label = new UILabel
        {
            TextColor = UIColor.Blue,
            Text = Element.Items[(int)row].ToString(),
            TextAlignment = UITextAlignment.Center,
        };
        var picker = this.Element;
        return label;
    }

    [Export("pickerView:didSelectRow:inComponent:")]
    public void Selected(UIPickerView pickerView, nint row, nint component)
    {
        Control.Text = Element.Items[(int)row];
        SelectedValue= Element.Items[(int)row]; 
    }

    protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
    {
        base.OnElementChanged(e);

        if(Control!=null)
        {
            SelectedValue = Element.Items[0];

            UIPickerView pickerView = (UIPickerView)Control.InputView;
            pickerView.WeakDelegate = this;
            pickerView.DataSource = this;

            // get the button Done and rewrite the event
            UIToolbar toolbar = (UIToolbar)Control.InputAccessoryView;

            UIBarButtonItem done = new UIBarButtonItem("Done", UIBarButtonItemStyle.Done, (object sender, EventArgs click) =>
                {
                    Control.Text = SelectedValue;
                    toolbar.RemoveFromSuperview();
                    pickerView.RemoveFromSuperview();
                    Control.ResignFirstResponder();
                });

            UIBarButtonItem empty = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace, null);

            toolbar.Items = new UIBarButtonItem[] { empty,done };
        }

    }

  }
}

HTML布局：

#! /usr/bin/env python
import sys, os, glob
mylist = ['fish.txt','random.txt', 'expo.txt']
def sorter(item):
    for item in mylist:
        return item

for file in sorted(glob.glob('*.txt'), key = sorter):
     print(file)

jQuery：

 public string CurrentControllerActiveClassName(string targetController)
    {
        var controller = ViewContext.RouteData.Values["controller"];
        return controller.Equals(targetController) ? "active" : string.Empty;
    }

点击侧边栏时，结果应保持活动状态。