How to add the row to a datagrid in wpf application at runtime?

Question

I have got an error when i dynamically add values to the observable collection which is binded with the datagrid's ItemSource.

 _Items.Add(new GridViewItem() {Name="Test1",ID=1});

 Error:This type of CollectionView does not support 

changes to its SourceCollection from a thread different from the Dispatcher thread.

How to resolve this?

Regards,

Tanya

Answer 1

you simply have to add the Item to the Observable Collection. Your Threading Error seems that you try to add the item in a not ui thread. so you have to use a dispatcher

  public ObsrevableCollection<MyTestItem> MyCollection {get; set;}


  <DatagGrid ItemsSource="{Binding MyCollection}" />


  public void Add()//is called from a not ui thread
  {
      Application.Current.Dispatcher.BeginInvoke((Action)(()=>this.MyCollection.Add(new MyTestItem(){ID=1, Name="Test1"}));
  }