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POObservableCollection<EF4Entity> bound to ListView, but relation fields don't cause ListView to update
 

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  1. POObservableCollection<EF4Entity> bound to ListView, but relation fields don't cause ListView to update
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    <p>I have an <code>ObservableCollection</code> of Entity Framework 4 entities bound to a <code>ListView</code>. If I modify any of the normal, scalar properties of the entity, the values displayed in the <code>ListView</code> are updated.</p> <p>Any relationship (navigation) properties are not updated in the <code>ListView</code> if they change, because the entity object doesn't implement change notifications for these properties.</p> <p>Right now, I'm removing the entity from the collection and then reinserting it back into the same position to force the <code>ListView</code> to update.</p> <p>There must be a better solution. What is it, if it exists?</p> <p>Here's the generated code from VS2010's EF designer:</p> <pre><code>[EdmEntityTypeAttribute(NamespaceName="RovingAuditDb", Name="AuditRecord")] [Serializable()] [DataContractAttribute(IsReference=true)] public partial class AuditRecord : EntityObject { #region Factory Method /// &lt;summary&gt; /// Create a new AuditRecord object. /// &lt;/summary&gt; /// &lt;param name="id"&gt;Initial value of the Id property.&lt;/param&gt; /// &lt;param name="date"&gt;Initial value of the Date property.&lt;/param&gt; public static AuditRecord CreateAuditRecord(global::System.Int32 id, global::System.DateTime date) { AuditRecord auditRecord = new AuditRecord(); auditRecord.Id = id; auditRecord.Date = date; return auditRecord; } #endregion #region Primitive Properties // Deleted for this post #endregion #region Navigation Properties /// &lt;summary&gt; /// No Metadata Documentation available. /// &lt;/summary&gt; [XmlIgnoreAttribute()] [SoapIgnoreAttribute()] [DataMemberAttribute()] [EdmRelationshipNavigationPropertyAttribute("RovingAuditDb", "AuditRecordCell", "Cell")] public Cell Cell { get { return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference&lt;Cell&gt;("RovingAuditDb.AuditRecordCell", "Cell").Value; } set { ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference&lt;Cell&gt;("RovingAuditDb.AuditRecordCell", "Cell").Value = value; } } /// &lt;summary&gt; /// No Metadata Documentation available. /// &lt;/summary&gt; [BrowsableAttribute(false)] [DataMemberAttribute()] public EntityReference&lt;Cell&gt; CellReference { get { return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference&lt;Cell&gt;("RovingAuditDb.AuditRecordCell", "Cell"); } set { if ((value != null)) { ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedReference&lt;Cell&gt;("RovingAuditDb.AuditRecordCell", "Cell", value); } } } // Rest of the Navigation properties removed for this post </code></pre>
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    1. USSteve
    1. USSteve
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    1. COpost your code and XAML
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      1. POObservableCollection<EF4Entity> bound to ListView, but relation fields don't cause ListView to update
      1. USFederico Berasategui
    2. COI don't think it's possible to "auto-update" the UI if the object does not implement dependency properties.
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      1. POObservableCollection<EF4Entity> bound to ListView, but relation fields don't cause ListView to update
      1. USWiley Marques
    3. CO@WileyMarques -1 if I could. Not true. That's what `INotifyPropertyChanged` is for. Let him post the code and XAML so we can understand the situation
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      1. POObservableCollection<EF4Entity> bound to ListView, but relation fields don't cause ListView to update
      1. USFederico Berasategui
 

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