Bagikan melalui


OleDbConnection Konstruktor

Definisi

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
Sumber:
DbConnectionHelper.cs
Sumber:
DbConnectionHelper.cs
Sumber:
DbConnectionHelper.cs
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

Berlaku untuk

OleDbConnection(String)

Sumber:
OleDbConnection.cs
Sumber:
OleDbConnection.cs
Sumber:
OleDbConnection.cs
Sumber:
OleDbConnection.cs
Sumber:
OleDbConnection.cs

Menginisialisasi instans OleDbConnection baru kelas dengan string koneksi yang ditentukan.

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

Berlaku untuk