CustomPopupDialog_MAIN.cs

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:CustomPopupDialog"
             xmlns:views="clr-namespace:CustomPopupDialog.Views;assembly=CustomPopupDialog"
             x:Class="CustomPopupDialog.MainPage"
             Title="Custom Dialog Test">
  <ContentPage.Content>
    <Grid>
      <Button VerticalOptions="End" x:Name="BtnShowDialog" Text="ShowDialog"></Button>


      <views:PopUpDialogView x:Name="PopUpDialog" HeaderTitle="Test Dialog">

          <!--CREATE YOUR BINDABLE ELEMENTS HERE BASE FROM THE PAGES VIEW MODELS-->
          <Label Text="This is a content"></Label>
          

      </views:PopUpDialogView>
    </Grid>
  </ContentPage.Content>
</ContentPage>