[英]No such table sqlite when execute query on xamarin forms pcl
I have a problem with the reading of the tables on the SQLite database. 我在读取SQLite数据库上的表时遇到问题。
my OBJ_User class: 我的OBJ_User类:
namespace Fimap.Models
{
public class OBJ_User
{
public int DLR_Id { get; set; }
public string DLR_Username { get; set; }
public string DLR_Password_Hash { get; set; }
public object DLR_Nome { get; set; }
public string DLR_Cognome { get; set; }
public int DLR_Tipo { get; set; }
public string DLR_Azienda { get; set; }
public object DLR_Telefono { get; set; }
public object DLR_Email { get; set; }
public int DLR_Abilitato { get; set; }
public object DLR_Time_Zone { get; set; }
public object DLR_Country { get; set; }
public string DLR_Culture { get; set; }
public object DLR_Email1 { get; set; }
public object DLR_MCC_Modello_Alias { get; set; }
public object DLR_Anagrafica { get; set; }
public object DLR_Firma { get; set; }
public bool IsFIMAP { get; set; }
public bool IsSTANDARD { get; set; }
public bool IsDealerOrFimap { get; set; } //true dealer - false user
public object DLR_Tipo_Esteso { get; set; }
public object DLR_Abilitato_Esteso { get; set; }
}
}
my interface in pcl project: 我在pcl项目中的界面:
public interface IDatabaseConnection
{
SQLite.SQLiteConnection DbConnection();
}
Android Android的
[assembly: Xamarin.Forms.Dependency(typeof(DatabaseConnection_Android))]
namespace Fimap.Droid
{
public class DatabaseConnection_Android : IDatabaseConnection
{
public SQLiteConnection DbConnection()
{
var dbName = "FimapDB.db3";
var path = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), dbName);
return new SQLiteConnection(path);
}
}
}
iOS iOS版
[assembly: Xamarin.Forms.Dependency(typeof(DatabaseConnection_iOS))]
namespace App.iOS
{
public class DatabaseConnection_iOS : IDatabaseConnection
{
public SQLiteConnection DbConnection()
{
var dbName = "FimapDB.db3";
string personalFolder = System.Environment.GetFolderPath(Environment.SpecialFolder.Personal);
string libraryFolder = Path.Combine(personalFolder);
var path = Path.Combine(libraryFolder, dbName);
return new SQLiteConnection(path);
}
}
}
pcl connection (database is right connect): pcl连接(数据库正确连接):
database = DependencyService.Get<IDatabaseConnection>().DbConnection();
query: 查询:
var test = database.Query<OBJ_User>("SELECT * FROM OBJ_User");
when i launch the query i have this error: 当我启动查询时,出现以下错误:
SQLite.SQLiteException: no such table: OBJ_User
SQLite.SQLiteException:没有这样的表:OBJ_User
OBJ_User is in the dabatase with one record. OBJ_User在dabatase中只有一条记录。 Why the connection don't mapping the table ?
为什么连接不映射表? database variable is right connect to database sqlite, i don't understand because database don't get mapping from sqlite file.
数据库变量是正确连接到数据库的SQLite,我不明白,因为数据库没有从SQLite文件映射。 Solution ?
解决方法
if you want other info write me in the comment, i will answer 如果您希望其他信息在评论中写给我,我会回答
The SQLite library doesn't know how to map the properties of type object to a sqlite column. SQLite库不知道如何将类型对象的属性映射到sqlite列。 The SQLite library supports the following column types by default: string, int, double, byte[], DateTime.
默认情况下,SQLite库支持以下列类型:string,int,double,byte [],DateTime。
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