在学习sqlite的过程中,发现它的dll是区分32位和64位的,起初觉得很恼火,但是仔细看了下,
发现让程序自行选择dll其实也不是一件很麻烦的事情,如下:
1>创建一个sqlite数据
2>创建一个工程
3>新建一个类
1 class Entrance : Application 2 { 3 [STAThread] 4 static void Main() 5 { 6 string dll32 = @".SQLitedllSystem.Data.SQLite32.dll"; 7 string dll64 = @".SQLitedllSystem.Data.SQLite64.dll"; 8 string dllpath = @".System.Data.SQLite.dll"; 9 10 if (IntPtr.Size == 8) 11 { 12 using (FileStream fs=File.Create(dllpath)){} 13 File.Copy(dll64,dllpath,true); 14 } 15 else if(IntPtr.Size == 4) 16 { 17 using (FileStream fs=File.Create(dllpath)){} 18 File.Copy(dll32,dllpath,true); 19 } 20 else 21 {MessageBox.Show("ERROR!");} 22 //start up the main window 23 Application app = new Application(); 24 MainWindow window = new MainWindow(); 25 app.Run(window); 26 } 27 }
4>添加按钮响应事件
1 private void Button_Click(object sender, RoutedEventArgs e) 2 { 3 string strconn = @"Data Source=.student.db;Version=3"; 4 string strcmd = "select * from stu"; 5 SQLiteConnection con = new SQLiteConnection(strconn); 6 try 7 { 8 con.Open(); 9 } 10 catch (Exception ex) 11 { MessageBox.Show(ex.ToString()); } 12 13 14 SQLiteCommand cmd = new SQLiteCommand(strcmd, con); 15 16 17 cmd.ExecuteNonQuery(); 18 19 SQLiteDataAdapter dataApp = new SQLiteDataAdapter(cmd); 20 DataTable dt = new DataTable("a"); 21 dataApp.Fill(dt); 22 dataGrid1.ItemsSource = dt.DefaultView; 23 dataApp.Update(dt); 24 con.Close(); 25 } 26 }
5>最终效果(左边是win8 64位测试效果,右边是xp 32位测试效果)[注:新版的System.Data.SQLite.dll可能需要msvcr100.dll的支持,在测试
的机器上如果没有这个dll会莫名地崩溃,还catch不到异常,具体可能跟版本有关,可以用depends来查看一下]