Good day all programmers

Currently I'm developing an android app using Visual Studio 2015. What the app does is, when the button is clicked, then AlertDialog will pop up. This alert dialog has a EditText that the user can enter something, and then will Toast it. The problem that I encounter is, whatever the user enter, will not be shown in the Toast.

My Main.axml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:minWidth="25px" android:minHeight="25px"> <Button android:text="Show Input Dialog" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/show" /> </LinearLayout>

My inputDialog.axml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="50px"> <TextView android:text="Enter Something Here" android:textAppearance="?android:attr/textAppearanceLarge" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/Title" /> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/userInput" android:hint="HERE!!!!!" /> </LinearLayout>

My MainActivity.cs

`Button show;

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView (Resource.Layout.Main);

        //INITIALIZE
        show = FindViewById<Button>(Resource.Id.show);

        //EVENT
        show.Click += delegate { clickShow(); };
    }

    private void clickShow()
    {
        LayoutInflater inflate = (LayoutInflater)GetSystemService(LayoutInflaterService);
        View view = inflate.Inflate(Resource.Layout.inputDialog, null);

        RunOnUiThread(() =>
        {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);

            builder.SetView(view);

            builder.SetNegativeButton("Cancel", delegate { builder.Dispose(); });
            builder.SetPositiveButton("Change", delegate { clickChange(); });
            builder.Show();
        });
    }

    private void clickChange()
    {
        try
        {
            EditText userInput = FindViewById<EditText>(Resource.Id.userInput);

            Toast.MakeText(this, userInput.Text, ToastLength.Long).Show();
        }
        catch
        {
            Toast.MakeText(this, "No Input", ToastLength.Long).Show();
        }
    }`

GIF showing I try it on real device (Lenovo A1000, Android Version 5.0)

I've tried to search all over google, but can't find what I need. Sorry if this is a silly question.

Thank you for your time guys. Appreciate it. Thanks again.