Thread: BUG #2044: OLEDB Driver error

The following bug has been logged online:

Bug reference:      2044
Logged by:          balamuralikn
Email address:      balamuralikn@rediffmail.com
PostgreSQL version: 8.0.4
Operating system:   Win 2000
Description:        OLEDB Driver error
Details:

iam facing the following error on execution of the given c# code using
pgoledb driver 1.0.0.19

Error :
---------
F:\CSharpTest\OLEDBTest>customermanager
Befor ExecuteReader
OleDb Exception System.Data.OleDb.OleDbException: No error information
availab
le: 0x80040155.
   at System.Data.OleDb.OleDbDataReader.ProcessResults(Int32 hr)
   at System.Data.OleDb.OleDbDataReader.NextResult()
   at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior
beh
avior, String method)
   at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior
behavior)
   at Customer.FindByName(String strName)

Source Code:( File - CustomerManager.cs)
------------------------------------------
using System;
using System.Data.OleDb;
public class Customer{
    string strName;
    string strAddr;
    String strCon = "Provider=PostgreSQL OLE DB Provider;Password=relax;User
ID=postgres; Data Source=anu;Location=test;Extended Properties=";
//    String strCon = "Provider=SQLOLEDB;User
ID=sa;pwd=;Server=anu;Database=test";

    OleDbConnection con  ;

    public Customer(){
        con = new OleDbConnection(strCon);
        con.Open();
    }
    public String Name{
        get {
            return strName;
        }
        set {
            strName = value;
        }
    }
    public String Address{
        get {
            return strAddr;
        }
        set {
            strAddr = value;
        }
    }
    public void Add() {
        String strInsert =  "Insert into customers (Name, Address) values (";
        strInsert += "'" +Name +"', ";
        strInsert += "'" +Address +"')";
        OleDbCommand cmd = new OleDbCommand(strInsert);
        cmd.Connection = con;
        cmd.ExecuteNonQuery();
    }

    public Customer FindByName(String strName) {
        try{
            String strSql =  "Select * from Customers where Name =  '"+ strName +
"'";
            OleDbCommand cmd = new OleDbCommand(strSql, con);
            Console.WriteLine("Befor ExecuteReader");
            OleDbDataReader objReader =
cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
            Console.WriteLine("Befor 'Read'");
            if (objReader.Read()){
                Console.WriteLine("After 'Read'");
                Name = objReader.GetString(0);
                Address = objReader.GetString(1);
                Console.WriteLine("After 'Fetch'");
            }
            else{
                throw new Exception("Customer not found");
            }
        }catch(OleDbException e){
            Console.WriteLine("OleDb Exception " +e);
            throw e;
        }catch(Exception e){
            Console.WriteLine("Application Exception " +e);
            throw e;
        }
        return this;
    }
};

public class CustomerManager{
    public static void Main(String [] a){
/*        //Test for adding new customer - perfectly working with postgre
        if (a.Length > 0){
            try{
                Customer cust = new Customer();
                cust.Name = a[0];
                cust.Address = a[1];
                cust.Add();
                Console.WriteLine("Sucess");
            }catch(Exception e){
                Console.WriteLine("Error : " + e);
            }
        }
        else{
            Console.WriteLine("Invalid arguments");
        } */
        // Test for finding customer - not working with postgre
        try{
            Customer cust = new Customer() ;
            cust = cust.FindByName("Murali");
            Console.WriteLine("Name : " + cust.Name);
            Console.WriteLine("Address : " + cust.Address);
        }catch(OleDbException ex){
//            Console.WriteLine("Data Error :"+ ex.StackTrace);
        }catch(Exception ex){
//            Console.WriteLine("Application Error :"+ ex.StackTrace);
        }
    }
};