SQLite no such table error when table exists in xamarin - xamarin

Question

This is How I define my table as what this link: SQLite no such table error when table exists said
[Table("RegUserTable")]
[Serializable]
[DataContract]
public class RegUserTable
{
[PrimaryKey]
[DataMember]
public Guid UserId { get; set; }
[DataMember]
public string Username { get; set; }
[DataMember]
public string Password { get; set; }
[DataMember]
public string Email { get; set; }
[DataMember]
public string Gender { get; set; }
}
This is my Login code:
public void Button_Clicked_1(object sender, EventArgs e)//LOGIN!
{
var dbpath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Userdatabase.db");
var db = new SQLiteConnection(dbpath);
var loginquery = db.Table<RegUserTable>().Where(u => u.Username.Equals(EntryLoginUsername.Text) && u.Password.Equals(EntryLoginPassword.Text)).FirstOrDefault();
if (string.IsNullOrWhiteSpace(EntryLoginUsername.Text) && string.IsNullOrWhiteSpace(EntryLoginPassword.Text))
{
DisplayAlert("Blank Fields", "Please Input Your Username and Password!", "OK");
}
else if (loginquery != null)
{
App.Current.MainPage = new NavigationPage(new MainPage(EntryLoginUsername.Text, GenderIdentifier.Text));
}
}
If I run this in my emulator it works 100%, but when I run it on my device it throws this error:
What am I doing wrong here?

Answer 1

Creating the table something like below solves the issue
public async void Button_Clicked_1(object sender, EventArgs e)//LOGIN!
{
var dbpath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Userdatabase.db");
var db = new SQLiteConnection(dbpath);
var connection = new SQLiteAsyncConnection(dbpath);
await connection.CreateTableAsync<RegUserTable>();
var loginquery = db.Table<RegUserTable>().Where(u => u.Username.Equals(EntryLoginUsername.Text) && u.Password.Equals(EntryLoginPassword.Text)).FirstOrDefault();
if (string.IsNullOrWhiteSpace(EntryLoginUsername.Text) && string.IsNullOrWhiteSpace(EntryLoginPassword.Text))
{
DisplayAlert("Blank Fields", "Please Input Your Username and Password!", "OK");
}
else if (loginquery != null)
{
App.Current.MainPage = new NavigationPage(new MainPage(EntryLoginUsername.Text, GenderIdentifier.Text));
}
}