如何在xamarin android的MainActivity上显示dialogFragment中的editText文本？

public class MainActivity : AppCompatActivity
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        // 设置布局等操作
    }

    public void ShowDialogFragment()
    {
        MyDialogFragment dialogFragment = new MyDialogFragment();
        dialogFragment.Show(SupportFragmentManager, "dialog");
    }
}

public class MyDialogFragment : DialogFragment
{
    public override Dialog OnCreateDialog(Bundle savedInstanceState)
    {
        AlertDialog.Builder builder = new AlertDialog.Builder(Activity);
        LayoutInflater inflater = Activity.LayoutInflater;
        View view = inflater.Inflate(Resource.Layout.dialog_layout, null);

        EditText editText = view.FindViewById<EditText>(Resource.Id.editText);
        // 设置EditText的初始文本

        builder.SetView(view)
               .SetPositiveButton("确定", (sender, args) =>
               {
                   // 处理确定按钮点击事件
               })
               .SetNegativeButton("取消", (sender, args) =>
               {
                   // 处理取消按钮点击事件
               });

        return builder.Create();
    }
}