Question

我使用这两个命令使用DBLinq在C＃/ winform中创建了一个Linq和SQLite应用程序：

DbMetal /provider:Sqlite /conn "Data Source=path\to\database.s3db" /dbml:path\to\Database.dbml

和

DbMetal /code:path\to\DatabaseContext.cs path\to\Database.dbml

获取与数据库的连接：

string dataSource = @"Data Source=" + AppDomain.CurrentDomain.BaseDirectory + "database.s3db";
var connection = new SQLiteConnection(dataSource);
Main db = new Main(connection, new SqliteVendor());

查询数据库：

var user = db.User.SingleOrDefault(u => u.UserName == username);

运行这行代码，我得到No shuch table异常：

no such table: main.USER
System.Data.SQLite.SQLiteException was unhandled HResult=-2147467259 Message=SQLite error
no such table: main.USER
Source=System.Data.SQLite 
ErrorCode=-2147467259
StackTrace:
    at System.Data.SQLite.SQLite3.Prepare(SQLiteConnection cnn, String strSql, SQLiteStatement previous, UInt32 timeoutMS, String& strRemain)
    at System.Data.SQLite.SQLiteCommand.BuildNextCommand()        
    at System.Data.SQLite.SQLiteCommand.GetStatement(Int32 index)
    at System.Data.SQLite.SQLiteDataReader.NextResult()
    at System.Data.SQLite.SQLiteDataReader..ctor(SQLiteCommand cmd, CommandBehavior behave)
    at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
    at System.Data.SQLite.SQLiteCommand.ExecuteDbDataReader(CommandBehavior behavior)
    at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()
    at DbLinq.Data.Linq.Sugar.Implementation.QueryRunner.Select[T](SelectQuery selectQuery)
    at DbLinq.Data.Linq.Sugar.Implementation.QueryRunner.SelectSingle[S](SelectQuery selectQuery, Boolean allowDefault)
    at DbLinq.Data.Linq.Sugar.Implementation.QueryRunner.SelectScalar[S](SelectQuery selectQuery)
    at DbLinq.Data.Linq.Implementation.QueryProvider`1.Execute[TResult](Expression expression)
    at System.Linq.Queryable.SingleOrDefault[TSource](IQueryable`1 source, Expression`1 predicate)
...

数据库文件存在，我有表。有什么想法吗？

SQLite和Linq错误：没有这样的表

0 个答案: