SqlClientFactory.CreateDataSourceEnumerator Yöntem

Tanım

Ad Alanı:

System.Data.SqlClient

Bütünleştirilmiş Kod:

System.Data.dll

Yeni SqlDataSourceEnumeratorbir döndürür.

public:
 override System::Data::Common::DbDataSourceEnumerator ^ CreateDataSourceEnumerator();

public override System.Data.Common.DbDataSourceEnumerator CreateDataSourceEnumerator ();

override this.CreateDataSourceEnumerator : unit -> System.Data.Common.DbDataSourceEnumerator

Public Overrides Function CreateDataSourceEnumerator () As DbDataSourceEnumerator

Döndürülenler

DbDataSourceEnumerator

Yeni bir veri kaynağı numaralandırıcısı.

Örnekler

Aşağıdaki örnek, herhangi bir sağlayıcı için veri kaynaklarını numaralandırabilecek kodu kullanarak tüm kullanılabilir SQL Server veri kaynaklarının listesini görüntüler.

using System;
using System.Data;
using System.Data.Common;
using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        // List all SQL Server instances:
        ListServers(SqlClientFactory.Instance);

        Console.WriteLine();
        Console.WriteLine("Press any key to continue...");
        Console.ReadKey();
    }
    private static void ListServers(DbProviderFactory factory)
    {
        // This procedure is provider-agnostic, and can list
        // instances of any provider's servers. Of course,
        // not all providers can create a data source enumerator,
        // so it's best to check the CanCreateDataSourceEnumerator
        // property before attempting to list the data sources.
        if (factory.CanCreateDataSourceEnumerator)
        {
            DbDataSourceEnumerator instance =
                factory.CreateDataSourceEnumerator();
            DataTable table = instance.GetDataSources();

            foreach (DataRow row in table.Rows)
            {
                Console.WriteLine("{0}\\{1}",
                    row["ServerName"], row["InstanceName"]);
            }
        }
    }
}

Imports System.Data
Imports System.Data.Common
Imports System.Data.SqlClient

Module Module1
    Sub Main()
        ' List all SQL Server instances:
        ListServers(SqlClientFactory.Instance)

        Console.WriteLine()
        Console.WriteLine("Press any key to continue.")
        Console.ReadKey()
    End Sub

    Private Sub ListServers(ByVal factory As DbProviderFactory)
        ' This procedure is provider-agnostic, and can list
        ' instances of any provider's servers. Of course, 
        ' not all providers can create a data source enumerator,
        ' so it's best to check the CanCreateDataSourceEnumerator property
        ' before attempting to list the data sources.
        If factory.CanCreateDataSourceEnumerator Then
            Dim instance As DbDataSourceEnumerator = _
             factory.CreateDataSourceEnumerator
            Dim table As System.Data.DataTable = instance.GetDataSources()

            Dim row As DataRow
            For Each row In table.Rows
                Console.WriteLine("{0}\{1}", _
                 row("ServerName"), row("InstanceName"))
            Next
        End If
    End Sub
End Module

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