ناتوانی در باز کردن یک database
سلام دوستان.من با vs2008 و sql2005 و در زبان c# میخواهم فایل pubs.mdb را باز کنم ولی vs به فرمان objconnection.open گیر میده و میگه sqlexception was unhandled. میخواستم راهنماییم کنید.
کد:
using System;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace DataSetExample
{
publicpartialclassForm1 : Form
{
SqlConnection objConnection = newSqlConnection(
"server=localhost;database=pubs;" +
"user id=sa;password=");
SqlDataAdapter objDataAdapter = newSqlDataAdapter();
DataSet objDataSet = newDataSet();
public Form1()
{
InitializeComponent();
}
privatevoid Form1_Load(object sender, EventArgs e)
{
// Set the SelectCommand properties...
objDataAdapter.SelectCommand = newSqlCommand();
objDataAdapter.SelectCommand.Connection =
objConnection;
objDataAdapter.SelectCommand.CommandText =
"SELECT au_lname, au_fname, title, price " +
"FROM authors " +
"JOIN titleauthor ON authors.au_id = " +
"titleauthor.au_id " +
"JOIN titles ON titleauthor.title_id = " +
"titles.title_id " +
"ORDER BY au_lname, au_fname";
objDataAdapter.SelectCommand.CommandType =
CommandType.Text;
// Open the database connection...
objConnection.Open();
// Fill the DataSet object with data...
objDataAdapter.Fill(objDataSet, "authors");
// Close the database connection...
objConnection.Close();
// Set the DataGridView properties
// to bind it to our data...
grdAuthorTitles.AutoGenerateColumns = true;
grdAuthorTitles.DataSource = objDataSet;
grdAuthorTitles.DataMember = "authors";
// Clean up
objDataAdapter = null;
objConnection = null;
}
}
}
