OleDbConnectionStringBuilder.Keys Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
ICollection Mendapatkan yang berisi kunci di OleDbConnectionStringBuilder.
public:
virtual property System::Collections::ICollection ^ Keys { System::Collections::ICollection ^ get(); };
public override System.Collections.ICollection Keys { get; }
member this.Keys : System.Collections.ICollection
Public Overrides ReadOnly Property Keys As ICollection
Nilai Properti
Yang ICollection berisi kunci di OleDbConnectionStringBuilder.
Contoh
Contoh aplikasi konsol berikut membuat baru OleDbConnectionStringBuilder. Kode mengulang melalui ICollection yang dikembalikan oleh properti yang Keys menampilkan pasangan kunci/nilai.
Catatan
Contoh ini mencakup kata sandi untuk menunjukkan cara OleDbConnectionStringBuilder kerja dengan string koneksi. Di aplikasi Anda, kami sarankan Anda menggunakan Autentikasi Windows. Jika Anda harus menggunakan kata sandi, jangan sertakan kata sandi yang dikodekan secara permanen di aplikasi Anda.
using System.Data.OleDb;
class Program
{
static void Main()
{
try
{
// Build an empty instance, just to see
// the contents of the keys.
DumpBuilderContents("");
// Create a SQL Server connection string.
DumpBuilderContents("Provider=sqloledb;Data Source=(local);" +
"Initial Catalog=AdventureWorks;" +
"User Id=ab;Password=Password@1");
// Create an Access connection string.
DumpBuilderContents("Provider=Microsoft.Jet.OLEDB.4.0;" +
@"Data Source=C:\Sample.mdb");
// Create an Oracle connection string.
DumpBuilderContents("Provider=msdaora;Data Source=SomeOracleDb;" +
"User Id=userName;Password=Pass@word1;");
// Create a Sybase connection string.
DumpBuilderContents("Provider=ASAProv;Data source=myASA");
Console.WriteLine("Press any key to finish.");
Console.ReadLine();
}
catch (System.ArgumentException ex)
{
Console.WriteLine("Error: " + ex.Message);
}
}
private static void DumpBuilderContents(string connectString)
{
OleDbConnectionStringBuilder builder =
new OleDbConnectionStringBuilder(connectString);
Console.WriteLine("=================");
Console.WriteLine("Original connectString = " + connectString);
Console.WriteLine("builder.ConnectionString = " + builder.ConnectionString);
foreach (string key in builder.Keys)
{
Console.WriteLine(key + "=" + builder[key].ToString());
}
}
}
Imports System.Data.OleDb
Module Module1
Sub Main()
Try
' Build an empty instance, just to see
' the contents of the keys.
DumpBuilderContents("")
' Create a SQL Server connection string.
DumpBuilderContents("Provider=sqloledb;Data Source=(local);" & _
"Initial Catalog=AdventureWorks;" & _
"User Id=ab;Password=Password@1")
' Create an Access connection string.
DumpBuilderContents("Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:\Sample.mdb")
' Create an Oracle connection string.
DumpBuilderContents("Provider=msdaora;Data Source=SomeOracleDb;" & _
"User Id=userName;Password=Pass@word1;")
' Create a Sybase connection string.
DumpBuilderContents("Provider=ASAProv;Data source=myASA")
Console.WriteLine("Press any key to finish.")
Console.ReadLine()
Catch ex As System.ArgumentException
Console.WriteLine("Error: " & ex.Message)
End Try
End Sub
Private Sub DumpBuilderContents(ByVal connectString As String)
Dim builder As New OleDbConnectionStringBuilder(connectString)
Console.WriteLine("=================")
Console.WriteLine("Original connectString = " & connectString)
Console.WriteLine("builder.ConnectionString = " & builder.ConnectionString)
For Each key As String In builder.Keys
Console.WriteLine(key & "=" & builder.Item(key).ToString)
Next
End Sub
End Module
Keterangan
Urutan nilai dalam ICollection tidak ditentukan, tetapi urutannya sama dengan nilai terkait dalam yang ICollection dikembalikan oleh Values properti .