OleDbConnection and OleDbCommand - Invalid authorization specification

Question

I have a single DBF file which I can open using Microsoft Visual FoxPro and I now need to add through Visual Studio 2012 in C# lnauage data to it.

I'm getting this error: Invalid authorization specification.

with this code:

DialogResult result = MessageBox.Show("Do you wish to submit?", "Potvrzení", MessageBoxButtons.YesNo);

    if (result == DialogResult.Yes)
    {
        odcCON.Open();
        OleDbCommand odc = new OleDbCommand("INSERT INTO netpokl.DBF (Castka,Akce) values(@castka,@akce)");
        odc.Parameters.AddWithValue("@castka",textBox2.Text);
        odc.Parameters.AddWithValue("@akce",test);
        odc.ExecuteNonQuery();
        odcCON.Close();

    }

OleDbConnection is this:

 OleDbConnection odcCON = new OleDbConnection(" Provider=SQLOLEDB;Data Source=\\SERVER\\Transfer\netpokl.DBF");

Answer 1

To read/write dbase files you can use the Microsoft JET OLEDB provider, with a connection string that looks like this one:

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\directory;Extended Properties=dBASE IV;User ID=Admin;Password=

Note that Data Source is the folder where your dbase file is. Finally in your query the table name should be the file name without the .dbf extension, like this:

INSERT INTO netpokl (Castka,Akce) values(@castka,@akce)

Should you need this to work on a 64bit application you can use the Microsoft ACE OLEDB provider (Microsoft Access Database Engine 2010 Redistributable)

Provider=Microsoft.ACE.OLEDB.12.0;Extended Properties=dBASE IV;Data Source=c:\directory;