SPFieldLookup.LookupWebId-Eigenschaft

Dient zum Abrufen oder Festlegen der ID der Website, die die Liste enthält, die die Quelle der Werte dieses Felds ist.

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

Syntax

'Declaration
Public Property LookupWebId As Guid
    Get
    Set
'Usage
Dim instance As SPFieldLookup
Dim value As Guid

value = instance.LookupWebId

instance.LookupWebId = value

public Guid LookupWebId { get; set; }

Eigenschaftswert

Typ: System.Guid
Der Wert der Eigenschaft ID für die Website.

Ausnahmen

Ausnahme	Bedingung
NotSupportedException	Die Liste, zu der das Feld gehört, ist eine externe Liste
SPException	Einmal festgelegt, kann nicht der Wert der Eigenschaft geändert werden.

Hinweise

Sie müssen SPBasePermissionshaben.Open Berechtigungen, diese Eigenschaft festzulegen.

Beispiele

Im folgende Beispiel ist eine Konsolenanwendung, die eine Liste Auflistung von Feldern für Nachschlagefelder abfragt. Für jedes Nachschlagefeld, das gefunden wird, druckt die Anwendung den Namen des Feldes, den Titel der Liste aufführt, die der Lookup-Feld zeigt auf, das Feld in das Ziel, die Quelle für das Nachschlagefeld Wert und den Namen der Website, wo sich die Quellliste befindet.

using System;
using Microsoft.SharePoint;

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            using (SPSite siteCollection = new SPSite("https://localhost"))
            {
                using (SPWeb site = siteCollection.OpenWeb())
                {
                    SPList list = site.Lists["Completed Orders"];

                    foreach (SPField item in list.Fields)
                    {
                        if (item is SPFieldLookup)
                        {
                            SPFieldLookup field = (SPFieldLookup)item;

                            if (!String.IsNullOrEmpty(field.LookupList) && !String.IsNullOrEmpty(field.LookupField))
                            {
                                // Is this the primary or secondary field for a list relationship?
                                string strRelationship = field.IsRelationship ? "Primary":"Secondary";

                                // Print the display name of the field.
                                Console.WriteLine("\nField: {0} ({1} Field)", field.Title, strRelationship);

                                // Is this a secondary field in a list relationship?
                                if (field.IsDependentLookup)
                                {
                                    SPField primaryField = list.Fields[new Guid(field.PrimaryFieldId)];
                                    Console.WriteLine("Primary Field: {0}", primaryField.Title);
                                }

                                // Get the site where the target list is located.
                                using (SPWeb targetSite = siteCollection.AllWebs[field.LookupWebId])
                                {
                                    // Get the name of the list where this field gets information.
                                    SPList targetList = targetSite.Lists[new Guid(field.LookupList)];
                                    Console.WriteLine("Related list: {0}", targetList.Title);

                                    // Get the name of the field where this field gets information.
                                    SPField targetField = targetList.Fields.GetFieldByInternalName(field.LookupField);
                                    Console.WriteLine("Related field: {0}", targetField.Title);
                                }
                            }
                        }
                    }
                }
            }
            Console.Write("\nPress ENTER to continue...");
            Console.ReadLine();
        }
    }
}

Imports System
Imports Microsoft.SharePoint

Module ConsoleApp

    Sub Main()
        Using siteCollection As New SPSite("https://localhost")
            Using site As SPWeb = siteCollection.OpenWeb()
                Dim list As SPList = site.Lists("Pending Orders")

                For Each item As SPField In list.Fields
                    If TypeOf item Is SPFieldLookup Then
                        Dim field As SPFieldLookup = DirectCast(item, SPFieldLookup)

                        If Not String.IsNullOrEmpty(field.LookupList) AndAlso Not String.IsNullOrEmpty(field.LookupField) Then
                            ' Is this the primary or secondary field for a list relationship?
                            Dim strRelationship As String = If(field.IsRelationship, "Primary", "Secondary")

                            ' Print the display name of the field.
                            Console.WriteLine(vbLf & "Field: {0} ({1} Field)", field.Title, strRelationship)

                            ' Is this a secondary field in a list relationship?
                            If field.IsDependentLookup Then
                                Dim primaryField As SPField = list.Fields(New Guid(field.PrimaryFieldId))
                                Console.WriteLine("Primary Field: {0}", primaryField.Title)
                            End If

                            ' Get the site where the target list is located.
                            Using targetSite As SPWeb = siteCollection.AllWebs(field.LookupWebId)
                                ' Get the name of the list where this field gets information.
                                Dim targetList As SPList = targetSite.Lists(New Guid(field.LookupList))
                                Console.WriteLine("Related list: {0}", targetList.Title)

                                ' Get the name of the field where this field gets information.
                                Dim targetField As SPField = targetList.Fields.GetFieldByInternalName(field.LookupField)
                                Console.WriteLine("Related field: {0}", targetField.Title)
                            End Using
                        End If
                    End If
                Next
            End Using
        End Using
        Console.Write(vbLf & "Press ENTER to continue...")
        Console.ReadLine()
    End Sub
End Module

Siehe auch

Referenz

SPFieldLookup Klasse

SPFieldLookup-Member

Microsoft.SharePoint-Namespace

LookupList

LookupField