有人知道如何使用c＃从oledb驱动程序中删除pack foxpro数据

这是我的代码

//Probando insercion OleDbConnection conexionFoxPro = new OleDbConnection(); string rutaFoxPro = @"C:\Users\BigMander\Documents\Proyectos de Visual FoxPro\prueba.dbc"; conexionFoxPro.ConnectionString = String.Format("Provider=VFPOLEDB.1;Data Source={0};Exclusive=Yes;", rutaFoxPro); bool sePudoEjecutarTodo = true; try { conexionFoxPro.Open(); OleDbCommand comandoFoxPro = new OleDbCommand(); comandoFoxPro.CommandText = @"INSERT INTO test ([nombre], [telefono], [id]) VALUES (?, ?, ?)"; comandoFoxPro.Parameters.Add("nombre", OleDbType.Char).Value = "bigmander"; comandoFoxPro.Parameters.Add("telefono", OleDbType.Char).Value = "some number"; comandoFoxPro.Parameters.Add("id", OleDbType.Integer).Value = 5; comandoFoxPro.Connection = conexionFoxPro; sePudoEjecutarTodo &= (comandoFoxPro.ExecuteNonQuery() > 0); comandoFoxPro.CommandText = @"SELECT nombre, telefono FROM test"; OleDbDataReader reader = comandoFoxPro.ExecuteReader(); while (reader.Read()) { Console.WriteLine("{0}: {1}", reader.GetName(0), reader["nombre"]); Console.WriteLine("{0}: {1}", reader.GetName(1), reader["telefono"]); } reader.Close(); reader.Dispose(); comandoFoxPro.CommandText = "DELETE FROM test WHERE id = 5"; sePudoEjecutarTodo &= (comandoFoxPro.ExecuteNonQuery() > 0); comandoFoxPro.CommandText = "SET EXCLUSIVE ON; PACK test"; sePudoEjecutarTodo &= (comandoFoxPro.ExecuteNonQuery() > 0); } catch(OleDbException oleDbE) { sePudoEjecutarTodo = false; Console.WriteLine(oleDbE.Message); } finally { if (sePudoEjecutarTodo) Console.WriteLine("Congratulaciones si se armo todo"); else Console.WriteLine("Pelas"); conexionFoxPro.Close(); Console.ReadKey(); } 

我在foxpro 9中有一个数据库，其中一个名为test的测试表，我用正常的sql语句测试，一切都很顺利，除了包装语句从数据库中物理删除数据，我发现和示例告诉我该怎么做但它与其他类型的驱动器（adodb），但即使我可以使用该代码，我想知道这些东西如何在oledb中工作。

Answer 1

  static void Main(string[] args) { Console.WriteLine("Starting program execution..."); string connectionString = @"Provider=VFPOLEDB.1;Data Source=h:\dave\"; using (OleDbConnection connection = new OleDbConnection(connectionString)) { using (OleDbCommand scriptCommand = connection.CreateCommand()) { connection.Open(); string vfpScript = @"SET EXCLUSIVE ON DELETE FROM test WHERE id = 5 PACK"; scriptCommand.CommandType = CommandType.StoredProcedure; scriptCommand.CommandText = "ExecScript"; scriptCommand.Parameters.Add("myScript", OleDbType.Char).Value = vfpScript; scriptCommand.ExecuteNonQuery(); } } Console.WriteLine("End program execution..."); Console.WriteLine("Press any key to continue"); Console.ReadLine(); } 

Answer 2

我从来没有注意到VFP的使用; 区分BETWEEN语句。 VFP使用; 识别语句在下一行继续（与C＃和其他语言完全相反）。

所以，我会在最后将命令文本更改为以下内容

 comandoFoxPro.CommandText = "USE TEST EXCLUSIVE \r\n" "PACK \r\n" "USE \r\n"; sePudoEjecutarTodo &= (comandoFoxPro.ExecuteNonQuery() > 0);