someone knows how to delete pack foxpro data from oledb driver with c#
this is my code
//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 (?, ?, ?)";
开发者_StackOverflow社区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();
}
i have a database in foxpro 9 with one testing table named test, and i tested with normal sql sentences, and everything is going fine except for the pack statement whom delete data physically from the database, i found and example that shows me how to do it but its with other kinda drive (adodb), but even if i can do it with that code i want to know how could this stuff works in oledb.
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();
}
I've never noticed VFP to use ; to differentiate BETWEEN statements. VFP uses ; to identify statement continues on next line (exact opposite of C# and other languages).
So, I would change your command text at the end to the following
comandoFoxPro.CommandText = "USE TEST EXCLUSIVE \r\n"
"PACK \r\n"
"USE \r\n";
sePudoEjecutarTodo &= (comandoFoxPro.ExecuteNonQuery() > 0);
精彩评论