OleDbConnection Konstruktor

Definisi

Ruang nama:

System.Data.OleDb

Rakitan:

System.Data.OleDb.dll

Paket:

System.Data.OleDb v9.0.0-preview.5.24306.7

Menginisialisasi instans baru kelas OleDbConnection.

Overload

OleDbConnection()	Menginisialisasi instans baru kelas OleDbConnection.
OleDbConnection(String)	Menginisialisasi instans OleDbConnection baru kelas dengan string koneksi yang ditentukan.

OleDbConnection()

Sumber:

DbConnectionHelper.cs

Menginisialisasi instans baru kelas OleDbConnection.

public:
 OleDbConnection();

public OleDbConnection ();

Public Sub New ()

Contoh

Contoh berikut membuat dan membuka 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.
    }
}

Public Sub OpenConnection(ByVal connectionString As String)

    Using connection As New OleDbConnection(connectionString)
        Try
            connection.Open()
            Console.WriteLine("DataSource: {0} Database: {1}", _
                connection.DataSource, connection.Database)
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
        ' The connection is automatically closed when the
        ' code exits the Using block.
    End Using
End Sub

Keterangan

Saat instans OleDbConnection baru dibuat, properti baca/tulis diatur ke nilai awal berikut kecuali secara khusus diatur menggunakan kata kunci terkait di ConnectionString properti .

Properti	Nilai awal
ConnectionString	string kosong ("")
ConnectionTimeout	15
Database	string kosong ("")
DataSource	string kosong ("")

Anda dapat mengubah nilai untuk properti ini hanya dengan menggunakan ConnectionString properti .

Lihat juga

• Menyambungkan ke Sumber Data

OleDbConnection(String)

Sumber:

OleDbConnection.cs

Menginisialisasi instans OleDbConnection baru kelas dengan string koneksi yang ditentukan.

public:
 OleDbConnection(System::String ^ connectionString);

public OleDbConnection (string? connectionString);

new System.Data.OleDb.OleDbConnection : string -> System.Data.OleDb.OleDbConnection

Public Sub New (connectionString As String)

Parameter

connectionString

String

Koneksi yang digunakan untuk membuka database.

Contoh

Contoh berikut membuat dan membuka 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.
    }
}

Public Sub OpenConnection(ByVal connectionString As String)

    Using connection As New OleDbConnection(connectionString)
        Try
            connection.Open()
            Console.WriteLine("DataSource: {0} Database: {1}", _
                connection.DataSource, connection.Database)
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
        ' The connection is automatically closed when the
        ' code exits the Using block.
    End Using
End Sub

Keterangan

Saat instans OleDbConnection baru dibuat, properti baca/tulis diatur ke nilai awal berikut kecuali secara khusus diatur menggunakan kata kunci terkait di ConnectionString properti .

Properti	Nilai awal
ConnectionString	connectionString
ConnectionTimeout	15
Database	string kosong ("")
DataSource	string kosong ("")

Anda dapat mengubah nilai untuk properti ini hanya dengan menggunakan ConnectionString properti .

Lihat juga

• Menyambungkan ke Sumber Data