When trying to create a simple Xamarin app, on debugging I will immediately get a dialog box quoting:
Object Reference not set to an instance of an object
Nothing appears in my error list.
Can anyone give me tips on where I am going wrong?
Many thanks,
Gary
MainPage.xaml
<xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:XamarinApp1"
x:Class="XamarinApp1.MainPage">
<StackLayout>
<!-- Place new controls here -->
<Label Text="Welcome to Xamarin.Forms!"
HorizontalOptions="Center"
VerticalOptions="CenterAndExpand" />
<Button Text="Click Me" Clicked="Button_Clicked" />
</StackLayout>
</ContentPage>
MainPage.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
namespace XamarinApp1
{
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
}
int count = 0;
private void Button_Clicked(object sender, EventArgs e)
{
count++;
((Button)sender).Text = $"You clicked {count} times.";
}
}
app.xaml.cs
using System;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
[assembly: XamlCompilation(XamlCompilationOptions.Compile)]
namespace XamarinApp1
{
public partial class App : Application
{
public App()
{
InitializeComponent();
MainPage = new MainPage();
}
protected override void OnStart()
{
// Handle when your app starts
}
protected override void OnSleep()
{
// Handle when your app sleeps
}
protected override void OnResume()
{
// Handle when your app resumes
}
}
}
