2012-12-10 59 views
1
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)"; 
    } 
} 

我創建了簡單的使用到的DBLinq提供LINQ到SQLite的應用程序,但它掛在db.SubmitChanges()。什麼原因?我只是想在不使用DbMetal.exe的情況下創建簡單的dblinq應用程序......沒有錯誤,沒有例外,我很無能。簡單的LINQ to SQLite的應用程序掛起的SubmitChanges()

回答

1

問題是與DataContext的和connectonString,解決它,我不得不改變...

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

DataContext db = new DataContext(connection); 

...或添加到DbLinqConnectionType到的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);