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QueryForConnectionCallback Delegate

The QueryForConnectionCallback delegate determines whether there is a cached connection available for use.

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

public delegate LdapConnection QueryForConnectionCallback(
	LdapConnection primaryConnection,
	LdapConnection referralFromConnection,
	string newDistinguishedName,
	LdapDirectoryIdentifier identifier,
	NetworkCredential credential,
	long currentUserToken


Type: System.DirectoryServices.Protocols.LdapConnection
A LdapConnection object that specifies the primary connection.
Type: System.DirectoryServices.Protocols.LdapConnection
A LdapConnection object that specifies the connection that provides the referral.
Type: System.String
A String object that specifies the distinguished name (DN) of the desired entry in the referred server.
Type: System.DirectoryServices.Protocols.LdapDirectoryIdentifier
A LdapDirectoryIdentifier object that specifies the identifier for the referred LDAP directory.
Type: System.Net.NetworkCredential
A NetworkCredential object that specifies the credentials to pass to the referred server.
Type: System.Int64
The LUID for the current user.

Return Value

Type: System.DirectoryServices.Protocols.LdapConnection
A cached LdapConnection is returned, if there is one available. If no cached connection is available, NULL is returned.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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