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OleDbConnection Constructor (String)

Initializes a new instance of the OleDbConnection class with the specified connection string.

Namespace: System.Data.OleDb
Assembly: System.Data (in system.data.dll)

public OleDbConnection (
	string connectionString
)
public OleDbConnection (
	String connectionString
)
public function OleDbConnection (
	connectionString : String
)

Parameters

connectionString

The connection used to open the database.

When a new instance of OleDbConnection is created, the read/write properties are set to the following initial values unless they are specifically set using their associated keywords in the ConnectionString property.

Properties

Initial value

ConnectionString

connectionString

ConnectionTimeout

15

Database

empty string ("")

DataSource

empty string ("")

You can change the value for these properties only by using the ConnectionString property.

The following example creates and opens an OleDbConnection.

static void OpenConnection(string connectionString)
{
    using (OleDbConnection connection = new OleDbConnection(connectionString))
    {
        try
        {
            connection.Open();
            Console.WriteLine("DataSource: {0 \nDatabase: {1",
                connection.DataSource, connection.Database);
        
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        
        // The connection is automatically closed when the
        // code exits the using block.
    

using System;
using System.Data;
using System.Data.OleDb;

class Class1
{
    static void Main()
    {
        string x = "Provider=SQLOLEDB;Data Source=(local);Initial Catalog=AdventureWorks;"
            + "Integrated Security=SSPI";
        OpenConnection(x);
        Console.ReadLine();
    

    static void OpenConnection(string connectionString)
    {
        using (OleDbConnection connection = new OleDbConnection(connectionString))
        {
            try
            {
                connection.Open();
                Console.WriteLine("DataSource: {0 \nDatabase: {1",
                    connection.DataSource, connection.Database);
            
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            
            // The connection is automatically closed when the
            // code exits the using block.
        

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0
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