c# - 有人知道如何使用 C# 从 oledb 驱动程序中删除 pack foxpro 数据

Question

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，其中有一个名为 test 的测试表，我用普通的 sql 语句进行了测试，除了从数据库中物理删除数据的 pack 语句外，一切都很好，我发现并向我展示了示例如何做到这一点，但它与其他有点驱动器 (adodb) 一起使用，但即使我可以使用该代码做到这一点，我也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(); 
    }