private void OnNotifyForeignPropertyChanged(object sender, PropertyChangedEventArgs e)
{
bool doRemoveRow = string.IsNullOrEmpty(e.PropertyName);
if (foreignKeyMap == null || (!doRemoveRow && !EntityTableHelper <TEntity> .IsKeyProperty(typeof(TEntity), e.PropertyName)))
{
return;
}
var foreignRow = sender as EntityRow;
object key;
if (foreignKeyMap.TryGetValue(foreignRow.InternalId, out key))
{
this.EntityRelation.Keys.Remove(key.ToString());
}
if (doRemoveRow)
{
FireResetNotifyCollection();
return;
}
object newKey = foreignRow[e.PropertyName];
//if ((key == null && newKey == null) || key.Equals(newKey))
// return;
this.EntityRelation.Keys.Add(newKey);
foreignKeyMap[foreignRow.InternalId] = newKey;
notifyCollectionChangedAction = NotifyCollectionChangedAction.Replace;
this.UpdateContent();
}
public void DoRemove(TEntity childEntity, bool referenceOnly = true)
{
string key = EntityTableHelper <TEntity> .RetriveKey(childEntity).ToString();
var proxyInfo = childEntity as IEntityProxyInfo;
if (foreignKeyMap == null)
{
foreignKeyMap = new Dictionary <Guid, object>();
}
foreignKeyMap.Remove(proxyInfo.Proxy.Row.InternalId);
if (!referenceOnly)
{
var foreignTableProxy = new EntityTableProxy <TEntity>(proxyInfo.Proxy.Row.Table, this.SourceProvider);
foreignTableProxy.Remove(childEntity);
}
//int idx = this.EntityRelation.Keys.IndexOf(key);
if (this.EntityRelation.Keys.Remove(key))
{
// UpdateContent();
//NotifyCollectionChangedAction.Remove會當,原因不明
//NotifyCollectionChangedEventArgs e = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, childEntity, idx);
// NotifyCollectionChangedEventArgs e = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset);
// OnCollectionChanged(e);
//FireResetNotifyCollection();
UpdateContent();
}
}
static public EntityTable CreateEntitySchema(bool genDefaultKey = false)
{
var schema = EntityTableHelper <IEntitySchema> .CreateDataTable();
schema.Columns["DataType"].DefaultValue = typeof(string).FullName;
schema.Columns["FieldType"].DefaultValue = EntityFieldType.Var.ToString();
if (genDefaultKey == true)
{
var tblProxy = new EntityTableProxy <IEntitySchema>(schema);
var colDef = tblProxy.Append();
colDef.Unique = true;
colDef.KeyGen = "id_{0}";
colDef.ColumnName = "Id";
schema.TableName = "";
}
return(schema);
}
