OracleConnectionStringBuilder 類別

定義

public ref class OracleConnectionStringBuilder sealed : System::Data::Common::DbConnectionStringBuilder

[System.ComponentModel.TypeConverter(typeof(System.Data.OracleClient.OracleConnectionStringBuilder+OracleConnectionStringBuilderConverter))]
public sealed class OracleConnectionStringBuilder : System.Data.Common.DbConnectionStringBuilder

[System.ComponentModel.TypeConverter(typeof(System.Data.OracleClient.OracleConnectionStringBuilder+OracleConnectionStringBuilderConverter))]
[System.Obsolete("OracleConnectionStringBuilder has been deprecated. http://go.microsoft.com/fwlink/?LinkID=144260", false)]
public sealed class OracleConnectionStringBuilder : System.Data.Common.DbConnectionStringBuilder

[<System.ComponentModel.TypeConverter(typeof(System.Data.OracleClient.OracleConnectionStringBuilder+OracleConnectionStringBuilderConverter))>]
type OracleConnectionStringBuilder = class
    inherit DbConnectionStringBuilder

[<System.ComponentModel.TypeConverter(typeof(System.Data.OracleClient.OracleConnectionStringBuilder+OracleConnectionStringBuilderConverter))>]
[<System.Obsolete("OracleConnectionStringBuilder has been deprecated. http://go.microsoft.com/fwlink/?LinkID=144260", false)>]
type OracleConnectionStringBuilder = class
    inherit DbConnectionStringBuilder

Public NotInheritable Class OracleConnectionStringBuilder
Inherits DbConnectionStringBuilder

繼承

Object

DbConnectionStringBuilder

OracleConnectionStringBuilder

屬性

TypeConverterAttribute ObsoleteAttribute

範例

下列主控台應用程式會建置 Oracle 資料庫的連接字串。 程序代碼會使用 OracleConnectionStringBuilder 類別來建立 連接字串，然後將 實例的 OracleConnectionStringBuilder 屬性傳遞ConnectionString至連接類別的建構函式。 此範例也會剖析現有的 連接字串，並示範各種操作 連接字串 內容的方式。

// You may need to set a reference to the System.Data.OracleClient
// assembly before you can run this sample.
using System.Data.OracleClient;

class Program
{
    static void Main()
    {
        // Create a new OracleConnectionStringBuilder and
        // initialize it with a few name/value pairs.
        OracleConnectionStringBuilder builder =
            new OracleConnectionStringBuilder(GetConnectionString());

        // Note that the input connection string used the
        // Server key, but the new connection string uses
        // the well-known Data Source key instead.
        Console.WriteLine(builder.ConnectionString);

        // Pass the OracleConnectionStringBuilder an existing
        // connection string, and you can retrieve and
        // modify any of the elements.
        builder.ConnectionString = "server=OracleDemo;user id=maryc;" +
            "password=pass@word1";

        // Now that the connection string has been parsed,
        // you can work with individual items.
        Console.WriteLine(builder.Password);
        builder.Password = "newPassword";
        builder.PersistSecurityInfo = true;

        // You can refer to connection keys using strings,
        // as well. When you use this technique (the default
        // Item property in Visual Basic, or the indexer in C#),
        // you can specify any synonym for the connection string key
        // name.
        builder["Server"] = ".";
        builder["Load Balance Timeout"] = 1000;
        builder["Integrated Security"] = true;
        Console.WriteLine(builder.ConnectionString);

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

    private static string GetConnectionString()
    {
        // To avoid storing the connection string in your code,
        // you can retrieve it from a configuration file.
        return "Server=OracleDemo;Integrated Security=true";
    }
}

' You may need to set a reference to the System.Data.OracleClient
' assembly before running this example.
Imports System.Data.OracleClient

Module Module1
  Sub Main()
    ' Create a new OracleConnectionStringBuilder and
    ' initialize it with a few name/value pairs.
    Dim builder As New OracleConnectionStringBuilder(GetConnectionString())

    ' Note that the input connection string used the 
    ' Server key, but the new connection string uses
    ' the well-known Data Source key instead.
    Console.WriteLine(builder.ConnectionString)

    ' Pass the OracleConnectionStringBuilder an existing 
    ' connection string, and you can retrieve and
    ' modify any of the elements.
    builder.ConnectionString = _
        "server=OracleDemo;user id=Mary;" & _
        "password=*****"
    ' Now that the connection string has been parsed,
    ' you can work with individual items.
    Console.WriteLine(builder.Password)
    builder.Password = "newPassword"
    builder.PersistSecurityInfo = True

    ' You can refer to connection keys using strings, 
    ' as well. When you use this technique (the default
    ' Item property in Visual Basic, or the indexer in C#),
    ' you can specify any synonym for the connection string key
    ' name.
    builder("Server") = "NewDemo"
    builder("Load Balance Timeout") = 1000

    ' The Item property is the default for the class, 
    ' and setting the Item property adds the value to the 
    ' dictionary, if necessary. 
    builder.Item("Integrated Security") = True
    Console.WriteLine(builder.ConnectionString)

    Console.WriteLine("Press Enter to finish.")
    Console.ReadLine()
  End Sub

  Private Function GetConnectionString() As String
    ' To avoid storing the connection string in your code,
    ' you can retrieve it from a configuration file. 
    Return "Server=OracleDemo;Integrated Security=True;" & _
      "Unicode=True"
  End Function

End Module

備註

此類型已被取代，將會在未來版本的 .NET Framework 中移除。 如需詳細資訊，請參閱 Oracle 和 ADO.NET。

連接字串 產生器可讓開發人員以程式設計方式建立語法正確的連接字串，以及使用 類別的屬性和方法剖析和重建現有的連接字串。 連接字串 產生器會提供強型別屬性，對應至 Oracle 所允許的已知索引鍵/值組。 OracleConnectionStringBuilder 類別會實作 ICustomTypeDescriptor 介面。 這表示類別在設計時間與 Visual Studio .NET 設計工具搭配運作。 當開發人員使用設計工具在 Visual Studio .NET 內建置強型別 DataSet 和強型別連線時，強型別 連接字串 產生器類別會顯示與其類型相關聯的屬性，而且也會有轉換器來對應已知索引鍵的通用值。

必須建立連接字串做為應用程式一部分的開發人員可以使用 OracleConnectionStringBuilder 類別來建置及修改連接字串。 類別 OracleConnectionStringBuilder 也可讓您輕鬆地管理儲存在應用程式組態檔中的連接字串。

OracleConnectionStringBuilder 會執行有效索引鍵/值組的檢查。 因此，這個類別無法用來建立無效的連接字串。 嘗試新增無效的配對將會擲回例外狀況。 類別 OracleConnectionStringBuilder 會維護同義字的固定集合，而且必要時，可以執行必要的翻譯，以從同義字轉換成對應的已知索引鍵名稱。 例如，當您使用 Item[] 屬性來擷取值時，您可以指定包含所需索引鍵之任何同義字的字串。 如需可接受的完整同義資料表清單，請參閱 Item[] 屬性。

句 OracleConnectionStringBuilder 柄會嘗試插入惡意專案。 例如，下列程式代碼使用預設 Item[] 屬性 (索引器，在 C# ) 正確地逸出巢狀索引鍵/值組。

Dim builder As New System.Data. _  
    OracleClient.OracleConnectionStringBuilder  
builder("Data Source") = "OracleDemo"  
builder("Integrated Security") = True  
builder("User ID") = "Mary;NewValue=Bad"  
System.Diagnostics.Debug.WriteLine(builder.ConnectionString)  

System.Data.OracleClient.OracleConnectionStringBuilder builder =  
   new System.Data.OracleClient.OracleConnectionStringBuilder();  
builder["Data Source"] = "OracleDemo";  
builder["integrated Security"] = true;  
builder["User ID"] = "Mary;NewValue=Bad";  
System.Diagnostics.Debug.WriteLine(builder.ConnectionString);  

結果是下列 連接字串，以安全的方式處理無效的值，方法是以引號括住用戶標識碼：

Data Source=OracleDemo;Integrated Security=True;User ID="Mary;NewValue=Bad"  

建構函式

屬性

方法

明確介面實作

擴充方法

適用於

另請參閱

• 建置連接字串