diff --git a/samples/CSharp/WPF_D3D/OCCViewer.cs b/samples/CSharp/WPF_D3D/OCCViewer.cs
index 64a6917f07..f0bdde3b73 100644
--- a/samples/CSharp/WPF_D3D/OCCViewer.cs
+++ b/samples/CSharp/WPF_D3D/OCCViewer.cs
@@ -402,6 +402,7 @@ namespace IE_WPF_D3D
     public void Delete ()
     {
       View.EraseObjects ();
+      SelectionChanged ();
     }
 
     protected void MultiDragEvent (int x, int y, int theState)
diff --git a/samples/CSharp/WPF_WinForms/OCCViewer.cs b/samples/CSharp/WPF_WinForms/OCCViewer.cs
index 89976e67e5..48101da5be 100644
--- a/samples/CSharp/WPF_WinForms/OCCViewer.cs
+++ b/samples/CSharp/WPF_WinForms/OCCViewer.cs
@@ -481,6 +481,7 @@ namespace IE_WPF_WinForms
         public void Delete()
         {
             View.EraseObjects();
+            SelectionChanged();
         }
 
         public void OnKeyDown( System.Windows.Input.Key theKey )
diff --git a/samples/CSharp/WinForms/Form2.cs b/samples/CSharp/WinForms/Form2.cs
index f082d854f4..06287ad241 100644
--- a/samples/CSharp/WinForms/Form2.cs
+++ b/samples/CSharp/WinForms/Form2.cs
@@ -638,6 +638,8 @@ namespace IE_WinForms
     public void DeleteObjects()
     {
       myOCCTProxy.EraseObjects();
+      IE_WinForms.Form1 parent = (IE_WinForms.Form1)this.ParentForm;
+      parent.SelectionChanged();
     }
     public void ImportModel(IE_WinForms.ModelFormat format)
     {
diff --git a/samples/qt/Common/src/DocumentCommon.cxx b/samples/qt/Common/src/DocumentCommon.cxx
index bccf024ec4..34783086dd 100755
--- a/samples/qt/Common/src/DocumentCommon.cxx
+++ b/samples/qt/Common/src/DocumentCommon.cxx
@@ -236,5 +236,6 @@ void DocumentCommon::onDelete()
 {
     myContext->EraseSelected (Standard_False);
     myContext->ClearSelected();
+    myContext->UpdateCurrentViewer();
     getApplication()->onSelectionChanged();
 }