ContactManager.DeleteContact Method

  • Reference

Definition

Namespace:
System.Net.PeerToPeer.Collaboration
Assembly:
System.Net.dll

Removes a PeerContact or PeerName from the ContactManager of the local peer.

Overloads

DeleteContact(PeerContact)

Removes the specified PeerContact from the ContactManager of the local peer.
DeleteContact(PeerName)

Removes the PeerContact associated with the specified PeerName from the ContactManager of the local peer.

DeleteContact(PeerContact)

Removes the specified PeerContact from the ContactManager of the local peer.

public:
 void DeleteContact(System::Net::PeerToPeer::Collaboration::PeerContact ^ peerContact);
public void DeleteContact (System.Net.PeerToPeer.Collaboration.PeerContact peerContact);
member this.DeleteContact : System.Net.PeerToPeer.Collaboration.PeerContact -> unit
Public Sub DeleteContact (peerContact As PeerContact)

Parameters

peerContact
PeerContact

The PeerContact to remove from the ContactManager.

Exceptions

ArgumentNullException

peerContact is null.

Examples

The following code example illustrates how to delete a PeerContact from the local ContactManager:

//Enumerating the contacts and letting the user choose which one to delete.
public static void DeleteContact()
{
    PeerContactCollection pcc = null;
    string contactToDelete = "";

    try
    {
        pcc = EnumContacts();
        if (pcc == null ||
            pcc.Count == 0)
        {
            Console.WriteLine("Contact list is empty -- no such contact exists.");
            return;
        }
        Console.Write("Please enter the nickname of the contact you wish to delete: ");
        contactToDelete = Console.ReadLine();

        foreach (PeerContact pc in pcc)
        {
            if (pc.Nickname.Equals(contactToDelete))
            {
                PeerCollaboration.ContactManager.DeleteContact(pc);
                Console.WriteLine("Contact {0} successfully deleted!", contactToDelete);
                return;
            }
        }
        Console.WriteLine("Contact {0} could not be found in the contact collection.", contactToDelete);
    }
    catch (ArgumentNullException argNullEx)
    {
        Console.WriteLine("The supplied contact is null: {0}", argNullEx.Message);
    }
    catch (ArgumentException argEx)
    {
        Console.WriteLine("The supplied contact \"{0}\" could not be found in the Contact Manager: {1}",
            contactToDelete, argEx.Message);
    }
    catch (PeerToPeerException p2pEx)
    {
        Console.WriteLine("The Peer Collaboration Infrastructure could not delete \"{0}\": {1}",
            contactToDelete, p2pEx.Message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Unexpected exception when trying to delete a contact : {0}", ex);
    }
    return;
}

Remarks

Calling this method requires a PermissionState of Unrestricted.

See also

Applies to

DeleteContact(PeerName)

Removes the PeerContact associated with the specified PeerName from the ContactManager of the local peer.

public:
 void DeleteContact(System::Net::PeerToPeer::PeerName ^ peerName);
[System.Security.SecurityCritical]
public void DeleteContact (System.Net.PeerToPeer.PeerName peerName);
[<System.Security.SecurityCritical>]
member this.DeleteContact : System.Net.PeerToPeer.PeerName -> unit
Public Sub DeleteContact (peerName As PeerName)

Parameters

peerName
PeerName

The PeerName associated with the PeerContact to remove from the ContactManager.

Attributes
SecurityCriticalAttribute

Exceptions

ArgumentException

The PeerContact associated with PeerName could not be found in the contact manager.

ArgumentNullException

peerName is null.

ObjectDisposedException

This object has had Dispose() previously called on it and cannot be used for future operations.

PeerToPeerException

Unable to complete DeleteContact operation.

Examples

The following code example illustrates how to delete a PeerContact from the local ContactManager:

//Enumerating the contacts and letting the user choose which one to delete.
public static void DeleteContact()
{
    PeerContactCollection pcc = null;
    string contactToDelete = "";

    try
    {
        pcc = EnumContacts();
        if (pcc == null ||
            pcc.Count == 0)
        {
            Console.WriteLine("Contact list is empty -- no such contact exists.");
            return;
        }
        Console.Write("Please enter the nickname of the contact you wish to delete: ");
        contactToDelete = Console.ReadLine();

        foreach (PeerContact pc in pcc)
        {
            if (pc.Nickname.Equals(contactToDelete))
            {
                PeerCollaboration.ContactManager.DeleteContact(pc);
                Console.WriteLine("Contact {0} successfully deleted!", contactToDelete);
                return;
            }
        }
        Console.WriteLine("Contact {0} could not be found in the contact collection.", contactToDelete);
    }
    catch (ArgumentNullException argNullEx)
    {
        Console.WriteLine("The supplied contact is null: {0}", argNullEx.Message);
    }
    catch (ArgumentException argEx)
    {
        Console.WriteLine("The supplied contact \"{0}\" could not be found in the Contact Manager: {1}",
            contactToDelete, argEx.Message);
    }
    catch (PeerToPeerException p2pEx)
    {
        Console.WriteLine("The Peer Collaboration Infrastructure could not delete \"{0}\": {1}",
            contactToDelete, p2pEx.Message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Unexpected exception when trying to delete a contact : {0}", ex);
    }
    return;
}

Remarks

Calling this method requires a PermissionState of Unrestricted.

See also

Applies to