xamarin sqlite SQLiteException: near ")": syntax error add - sqlite

Question

I am trying to learn xaml and C# used in Xamarin Forms, and now I want to implement SQLite functionality.
I am simply trying to add a value into a SQL table but get the following error:
Unhandled Exception:
SQLite.SQLiteException: near ")": syntax error occurred
My Database connection interface is as follows:
using SQLite;
namespace TestSQLite
{
public interface IDatabaseConnection
{
SQLiteAsyncConnection GetConnection();
}
}
My Android specific Database Connection (iOS is identical) is as follows:
using SQLite;
using System.IO;
using TestSQLite;
using Xamarin.Forms;
[assembly: Dependency(typeof(DatabaseConnection))]
namespace TestSQLite
{
public class DatabaseConnection : IDatabaseConnection
{
public SQLiteAsyncConnection GetConnection()
{
var dbName = "TestDb.db3";
var path = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), dbName);
return new SQLiteAsyncConnection(path);
}
}
}
My MainPage (testpage) is as follows:
using SQLite;
using Xamarin.Forms;
namespace TestSQLite
{
public class ControlledDrugs
{
[PrimaryKey, AutoIncrement]
public int Id { get; set; }
public string Drug { get; set; }
public double Volume { get; set; }
}
public class Users
{
[PrimaryKey, AutoIncrement]
public int Id { get; set; }
public string Name { get; set; }
}
public partial class MainPage : ContentPage
{
private SQLiteAsyncConnection _connection;
public MainPage()
{
InitializeComponent();
_connection = DependencyService.Get<IDatabaseConnection>().GetConnection();
}
protected override async void OnAppearing()
{
await _connection.CreateTableAsync<ControlledDrugs>();
await _connection.CreateTableAsync<Users>();
var drugs = await _connection.Table<ControlledDrugs>().ToListAsync();
Drugslistview.ItemsSource = drugs;
var user = await _connection.Table<Users>().ToListAsync();
Userlistview.ItemsSource = user;
base.OnAppearing();
}
async void OnAdd(object sender, System.EventArgs e)
{
var user = UserInput.Text;
//The next step generates the error
await _connection.InsertAsync(user);
}
void OnUpdate(object sender, System.EventArgs e)
{
}
void OnDelete(object sender, System.EventArgs e)
{
}
}
}
As you can see, I have yet to progress to update or delete. Learning by Youtube and Stackoverflow snippets is painfully slow. But this error got me stumped.
Also, have NuGet package sqlite-net-pcl v1.5.166-beta installed Xamarin Visual Studio.

Answer 1

you are attempting to insert a string into the User table instead of a User object
var user = UserInput.Text;
// user is just a string
await _connection.InsertAsync(user);
instead you need to create a User object
var user = new Users { Name = UserInput.Text };
await _connection.InsertAsync(user);