Simple Linq to SQLIte 应用程序挂在 SubmitChanges() 上

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SQLite;
using System.Data.Linq.Mapping;
using DbLinq.Data.Linq;

namespace LinqToSQLite
{
    class Program
    {
        static void Main(string[] args)
        {
            string connectionString = "DbLinqProvider=Sqlite;Data Source=db2.sqlite";
            DataContext db = new DataContext(connectionString);
            db.ExecuteCommand(Person.CreateCommand);
            Table<Person> table = db.GetTable<Person>();
            table.InsertOnSubmit(new Person { Name = "Alfred" });
            table.InsertOnSubmit(new Person { Name = "Brian" });
            table.InsertOnSubmit(new Person { Name = "Charles" });
            db.SubmitChanges();
            var query = from p in table select p;
            foreach (var p in query)
            {
                Console.WriteLine(p.ID + ". " + p.Name);
            }
            Console.WriteLine("Done");
            Console.ReadLine();
        }
    }
    [Table(Name = "Persons")]
    class Person
    {
        [Column(IsPrimaryKey = true, IsDbGenerated = true)]
        public int ID { get; set; }
        [Column]
        public string Name { get; set; }
        public static string CreateCommand = "CREATE TABLE IF NOT EXISTS Persons ( Id INTEGER PRIMARY KEY, Name TEXT )";
    }
}

我使用 dblinq 创建了简单的应用程序来向 SQLite 提供 Linq，但它挂在 db.SubmitChanges() 上。原因是什么？我只是想创建简单的dblinq应用程序而不使用DbMetal.exe...没有错误，没有例外，我一无所知。

Answer 1

问题出在 DataContext 和 connectonString 上，为了修复它，我必须更改...

string connectionString = "DbLinqProvider=Sqlite;Data Source=db2.sqlite;";
SQLiteConnection connection = new SQLiteConnection(connectionString);
DataContext db = new DataContext(connection);

。或添加到 DbLinqConnectionType 到 connectionString...

string connectionString = "DbLinqProvider=Sqlite;Data Source=db2.sqlite;";
connectionString += "DbLinqConnectionType=System.Data.SQLite.SQLiteConnection, System.Data.SQLite, Version=1.0.66.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139";
DataContext db = new DataContext(connectionString);