Reading attached files from database using OLE-DB

Question

I\'m trying to read a Microsoft Access Database using C#. I\'m using the OLE-DB classes. The Problem is that this code

OleDbDataReader reader = Command.Execu         


        

Answer 1

I realise you asked for OleDb, but with DAO you could say something like:

    DBEngine dbe = new DBEngine();
    Database db = dbe.OpenDatabase(@"z:\docs\test.accdb", false, false, "");
    Recordset rs = db.OpenRecordset("SELECT TheAttachment FROM TheTable", 
        RecordsetTypeEnum.dbOpenDynaset, 0, LockTypeEnum.dbOptimistic);

    Recordset2 rs2 = (Recordset2)rs.Fields["TheAttachment"].Value;

    Field2 f2 = (Field2)rs2.Fields["FileData"];
    f2.SaveToFile(@"z:\docs\ForExample.xls");
    rs2.Close();
    rs.Close();

Reference: Programmatically managing Microsoft Access Attachment-typed field with .NET