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Gets or sets a value that specifies the GUID that identifies the site containing the list which contains the field used as the lookup values.
Namespace:  Microsoft.SharePoint.Client
Assemblies:   Microsoft.SharePoint.Client.Silverlight (in Microsoft.SharePoint.Client.Silverlight.dll);  Microsoft.SharePoint.Client (in Microsoft.SharePoint.Client.dll)
Syntax
'Declaration
<RemoteAttribute> _
Public Property LookupWebId As Guid
    Get
    Set
'Usage
Dim instance As FieldLookup
Dim value As Guid
value = instance.LookupWebId
instance.LookupWebId = value
[RemoteAttribute]
public Guid LookupWebId { get; set; }
Property Value
Type: System.Guid
Returns a Guid instance representing the GUID that identifies the site containing the list which contains the field used as the lookup values.
Exceptions
| Exception | Condition | 
|---|---|
| [Microsoft.SharePoint.SPException] | The server does not allow properties of the field to be changed. Error code: -2146232832.  | 
| [System.NotSupportedException] | When the property is read only and the list that this field belongs to is an external list. Error code: -1.  |