System.TypeInitializationException: GridView

we are create new New Project in vs2019

xamarin.forms with Master Details(android & Ios) also creating the grid view but when i run the project and click on the GridListPage we getting the error

my code is below kindly suggest us where is the wrong

GridListPage.xaml

"1.0" encoding="utf-8" ?>
"http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="CollectionViewSample.Views.GridListPage"
xmlns:vm="clr-namespace:CollectionViewSample.ViewModels"
Title="{Binding Title}">
"CV" ItemsSource="{Binding DataSource}" VerticalOptions="Center" HorizontalOptions="Center" Margin="10,0,10,0">
"Vertical" Span="2"/>
"vm:GridListViewModel">
"LightGray" CornerRadius="3" HasShadow="False">
"Auto"/>
"100" />
"Auto"/>
"*"/>
"0" Source="person" Aspect="Fill"/>
"1">
"{Binding}" HorizontalOptions="EndAndExpand" VerticalOptions="CenterAndExpand"/>

GridListViewModel.cs

using System;
using System.Collections.Generic;
using System.Text;
namespace CollectionViewSample.ViewModels
{
public class GridListViewModel : BaseViewModel
{
public GridListViewModel()
{
Title = "Grid List View";
}
}
}

GridListPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace CollectionViewSample.Views
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class GridListPage : ContentPage
{
public List<string> DataSource { get; }
public GridListPage()
{
InitializeComponent();
DataSource = new List<string>
{
"Alan",
"Betty",
"Charles",
"David",
"Edward",
"Francis",
"Gary",
"Helen",
"Ivan",
"Joel",
"Kelly",
"Larry",
"Mary",
"Nancy",
"Olivia",
"Peter",
"Quincy",
"Robert",
"Stephen",
"Timothy",
"Ursula",
"Vincent",
"William",
"Xavier",
"Yvonne",
"Zack"
};
CV.BindingContext = this;
}
}
}

3 Replies

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Logesh Palani7y ago
Its error comes for wrong class intializer. check you constractor is static field and class initilizing
0
Pratik Shirse7y ago
Hello Rajanikantji,

we working in mobile app development
0
Rajanikant Hawaldar7y ago
Hi Pratik,

This may help you

https://www.telerik.com/forums/typeinitializationexception

https://stackoverflow.com/questions/46273810/system-typeinitializationexception-when-changing-mainwindow-startupuri-wpf

Thanks
0