SqlConnectionStringBuilder.InitialCatalog Properti

Definisi

Ruang nama:

System.Data.SqlClient

Rakitan:

System.Data.dll

Mendapatkan atau mengatur nama database yang terkait dengan koneksi.

public:
 property System::String ^ InitialCatalog { System::String ^ get(); void set(System::String ^ value); };

[System.ComponentModel.TypeConverter(typeof(System.Data.SqlClient.SqlConnectionStringBuilder+SqlInitialCatalogConverter))]
public string InitialCatalog { get; set; }

[<System.ComponentModel.TypeConverter(typeof(System.Data.SqlClient.SqlConnectionStringBuilder+SqlInitialCatalogConverter))>]
member this.InitialCatalog : string with get, set

Public Property InitialCatalog As String

Nilai Properti

String

Nilai InitialCatalog properti , atau String.Empty jika tidak ada yang disediakan.

Atribut

TypeConverterAttribute

Pengecualian

ArgumentNullException

Untuk mengatur nilai ke null, gunakan Value.

Contoh

Contoh berikut membuat string koneksi sederhana lalu menggunakan SqlConnectionStringBuilder kelas untuk menambahkan nama database ke string koneksi. Kode menampilkan konten InitialCatalog properti, hanya untuk memverifikasi bahwa kelas dapat dikonversi dari sinonim ("Database") ke nilai properti yang sesuai.

using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        try
        {
            string connectString = "Data Source=(local);" +
                "Integrated Security=true";

            SqlConnectionStringBuilder builder =
                new SqlConnectionStringBuilder(connectString);
            Console.WriteLine("Original: " + builder.ConnectionString);

            // Normally, you could simply set the InitialCatalog
            // property of the SqlConnectionStringBuilder object. This
            // example uses the default Item property (the C# indexer)
            // and the "Database" string, simply to demonstrate that
            // setting the value in this way results in the same
            // connection string:
            builder["Database"] = "AdventureWorks";
            Console.WriteLine("builder.InitialCatalog = "
                + builder.InitialCatalog);
            Console.WriteLine("Modified: " + builder.ConnectionString);

            using (SqlConnection connection =
                new SqlConnection(builder.ConnectionString))
            {
                connection.Open();
                // Now use the open connection.
                Console.WriteLine("Database = " + connection.Database);
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }

        Console.WriteLine("Press any key to finish.");
        Console.ReadLine();
    }
}

Imports System.Data.SqlClient
    
Module Module1
    Sub Main()
        Try
            Dim connectString As String = _
             "Data Source=(local);" & _
             "Integrated Security=True"

            Dim builder As New SqlConnectionStringBuilder(connectString)
            Console.WriteLine("Original: " & builder.ConnectionString)

            ' Normally, you could simply set the InitialCatalog
            ' property of the SqlConnectionStringBuilder object. This
            ' example uses the default Item property (the C# indexer)
            ' and the "Database" string, simply to demonstrate that
            ' setting the value in this way results in the same
            ' connection string.
            builder("Database") = "AdventureWorks"
            Console.WriteLine("builder.InitialCatalog = " _
                & builder.InitialCatalog)
            Console.WriteLine("Modified: " & builder.ConnectionString)

            Using connection As New SqlConnection(builder.ConnectionString)
                connection.Open()
                ' Now use the open connection.
                Console.WriteLine("Database = " & connection.Database)
            End Using

        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try

        Console.WriteLine("Press any key to finish.")
        Console.ReadLine()
    End Sub
End Module

Keterangan

Properti ini sesuai dengan kunci "Katalog Awal" dan "database" dalam string koneksi.

Lihat juga

• String Koneksi dalam ADO.NET
• Ringkasan ADO.NET