SPFieldLinkCollection.Delete - Méthode (Guid)

Supprime l'objet SPFieldLink avec l'ID spécifié de la collection.

Espace de noms :  Microsoft.SharePoint
Assembly :  Microsoft.SharePoint (dans Microsoft.SharePoint.dll)

Syntaxe

'Déclaration
Public Sub Delete ( _
    id As Guid _
)
'Utilisation
Dim instance As SPFieldLinkCollection
Dim id As Guid

instance.Delete(id)

public void Delete(
    Guid id
)

Paramètres

• id
  Type : System.Guid

  La valeur de la propriété Id de l'objet SPFieldLink à supprimer.

Remarques

Si un objet avec l'ID spécifié est introuvable, la méthode n'effectue aucune action.

Exemples

L'exemple suivant montre une application de console qui énumère tous les types de contenu dans la collection de sites à la recherche de références à un champ de site nommé « Propriétaire ». Si tel est le cas, l'application tente de supprimer l'objet SPFieldLink à partir du type de contenu de site et de tous les types de contenu enfants. L'application signale des exceptions par des messages d'impression à la console.

Imports System
Imports Microsoft.SharePoint

Module ConsoleApp
    Sub Main()
        Dim site As SPSite = New SPSite("https://localhost")
        Try
            Dim web As SPWeb = site.OpenWeb()
            Try
                Dim fldName As String = "Owner"
                Dim id As Guid = GetFieldId(fldName, web.Fields)
                ' Try to delete links to the field from site content types.
                Dim found As Boolean = False
                For Each ct As SPContentType In web.ContentTypes
                    Dim fldLnk As SPFieldLink = ct.FieldLinks(id)
                    If fldLnk IsNot Nothing Then
                        found = True
                        Console.WriteLine("Content type {0} links to field {1}.", ct.Name, fldName)
                        ct.FieldLinks.Delete(id)
                        Try
                            ct.Update(True, True) ' Throws an exception if this or child is readonly or sealed.
                            Console.WriteLine("Field deleted from content type and all children.")
                        Catch ex As SPException
                            Console.Write("Field was not deleted from all instances of this content type. ")
                            Console.WriteLine(ex.Message)
                        End Try
                    End If
                Next ct
                If Not found Then
                    Console.WriteLine("No site content type links to field {0}", fldName)
                End If
            Finally
                web.Dispose()
            End Try
            Finally
                site.Dispose()
            End Try
        Console.Write(vbCrLf + "Press ENTER to continue...")
        Console.ReadLine()
    End Sub

    Function GetFieldId(ByVal name As String, ByVal fields As SPFieldCollection) As Guid
        Dim id As Guid = Guid.Empty
        Dim fld As SPField = Nothing
        Try
            fld = fields.GetField(name)
        Catch ex As ArgumentException
            Console.WriteLine("Exception thrown by a call to {0} with argument '{1}'", ex.TargetSite, name)
        End Try
        If fld IsNot Nothing Then
            id = fld.Id
        End If
        Return id 'Might be Guid.Empty
    End Function
End Module

using System;
using Microsoft.SharePoint;

namespace Test
{
    class ConsoleApp
    {
        static void Main(string[] args)
        {
            using (SPSite site = new SPSite("https://localhost"))
            {
                using (SPWeb web = site.OpenWeb())
                {
                    string fldName = "Owner";
                    Guid id = GetFieldId(fldName, web.Fields);
                    // Try to delete links to the field from site content types.
                    bool found = false;
                    foreach (SPContentType ct in web.ContentTypes)
                    {
                        SPFieldLink fldLnk = ct.FieldLinks[id];
                        if (fldLnk != null)
                        {
                            found = true;
                            Console.WriteLine("Content type {0} links to field {1}.",
                                              ct.Name, fldName);
                            ct.FieldLinks.Delete(id);
                            try
                            {
                                ct.Update(true, true); // Throws an exception if this or child is readonly or sealed.
                                Console.WriteLine("Field deleted from content type and all children.");
                            }
                            catch (SPException ex)
                            {
                                Console.Write("Field was not deleted from all instances of this content type. "); 
                                Console.WriteLine(ex.Message);
                            }
                        }
                    }
                    if (!found)
                        Console.WriteLine("No site content type links to field {0}", fldName);
                }
            }
            Console.Write("\nPress ENTER to continue...");
            Console.ReadLine();
        }

        static Guid GetFieldId(string name, SPFieldCollection fields)
        {
            Guid id = Guid.Empty;
            SPField fld = null;
            try
            {
                fld = fields.GetField(name);
            }
            catch (ArgumentException ex)
            {
                Console.WriteLine("Exception thrown by a call to {0} with argument '{1}'", ex.TargetSite, name);
            }
            if (null != fld)
                id = fld.Id;
            return id; //Might be Guid.Empty.
        }
    }
}

Voir aussi

Référence

SPFieldLinkCollection classe

SPFieldLinkCollection - Membres

Delete - Surcharge

Microsoft.SharePoint - Espace de noms

Item[Guid]

SPFieldLink

SPContentType

Autres ressources

Fields and Field References

Introduction to Columns