OracleConnectionStringBuilder.Remove(String) 方法

public:
 override bool Remove(System::String ^ keyword);

public override bool Remove (string keyword);

override this.Remove : string -> bool

Public Overrides Function Remove (keyword As String) As Boolean

参数

返回

如果该键原本存在于连接字符串中但被移除，则为 true；如果连接字符串中不存在该键，则为 false。

例外

示例

以下示例将现有连接字符串从使用 Windows 身份验证转换为使用集成安全性。 该示例通过以下方式来完成此工作：从连接字符串中移除用户名和密码，然后设置 IntegratedSecurity 对象的 OracleConnectionStringBuilder 属性。

// 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()
    {
        try
        {
            string connectString =
                "Data Source=OracleDemo;User ID=Mary;Password=*****";

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

            // Use the Remove method
            // in order to reset the user ID and password back to their
            // default (empty string) values.
            builder.Remove("User ID");
            builder.Remove("Password");

            // Turn on integrated security.
            builder.IntegratedSecurity = true;

            Console.WriteLine("Modified: " + builder.ConnectionString);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
        Console.WriteLine("Press any key to finish.");
        Console.ReadLine();
    }
}

' You may need to set a reference to the System.Data.OracleClient
' assembly before you can run this sample.
Imports System.Data.OracleClient

Module Module1

  Sub Main()
    Try
      Dim connectString As String = _
       "Data Source=OracleDemo;User ID=Mary;Password=*****;"

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

      ' Use the Remove method
      ' in order to reset the user ID and password back to their
      ' default (empty string) values.
      builder.Remove("User ID")
      builder.Remove("Password")

      ' Turn on integrated security.
      builder.IntegratedSecurity = True

      Console.WriteLine("Modified: " & builder.ConnectionString)

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

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

注解

Remove由于 方法返回一个值，该值指示其成功，因此在尝试从OracleConnectionStringBuilder实例中删除键/值对之前，无需查找是否存在键。 OracleConnectionStringBuilder由于 维护键/值对的固定大小集合，因此调用 Remove 方法只是将键/值对的值重置回其默认值。

由于 OracleConnectionStringBuilder 所支持的键集合是固定的，因此该集合中的每一项都具有已知的默认值。

下表列出了键，以及第一次初始化 时 OracleConnectionStringBuilder 或调用 方法后 Remove 每个键的值：

适用于

另请参阅

• 生成连接字符串