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ContextOptions Enumeration

Specifies the options that are used for binding to the server. The application can set multiple options that are linked with a bitwise OR operation.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

Namespace:  System.DirectoryServices.AccountManagement
Assembly:  System.DirectoryServices.AccountManagement (in System.DirectoryServices.AccountManagement.dll)

[FlagsAttribute]
public enum ContextOptions

Member nameDescription
NegotiateThe client is authenticated by using either Kerberos or NTLM. When the user name and password are not provided, the Account Management API binds to the object by using the security context of the calling thread, which is either the security context of the user account under which the application is running or of the client user account that the calling thread represents.
SimpleBindThe client is authenticated by using the Basic authentication.

Caution   Communications may be sent over the Internet in clear text if the SecureSocketsLayer option is not specified with simple bind.

SecureSocketLayerThe channel is encrypted by using the Secure Sockets Layer (SSL). Active Directory requires that the Certificate Services be installed to support SSL.
SigningThe integrity of the data is verified. This flag can only be used with the Negotiate context option and is not available with the simple bind option.
SealingThe data is encrypted by using Kerberos.

This flag can only be used with the Negotiate context option and is not available with the simple bind option.

ServerBindSpecify this flag when you use the domain context type if the application is binding to a specific server name.

When the context options are not specified by the application, the Account Management API uses the following combination of options:

  • ContextOptions.Negotiate | ContextOptions.Signing | ContextOptions.Sealing

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5

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