Changeset 3456 for trunk/sources/HeuristicLab.Core.Views/3.3/ItemArrayView.cs

Timestamp:

04/21/10 07:17:21 (14 years ago)

Author:

swagner

Message:

Fixed null reference exception in collection views (#973)

File:

• trunk/sources/HeuristicLab.Core.Views/3.3/ItemArrayView.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Core.Views/3.3/ItemArrayView.cs

@@ -196 +196 @@
     #region ListView Events
     protected virtual void itemsListView_SelectedIndexChanged(object sender, EventArgs e) {
-      addButton.Enabled = itemsListView.SelectedItems.Count > 0 && !Content.IsReadOnly && !ReadOnly;
+      addButton.Enabled = itemsListView.SelectedItems.Count > 0 && (Content != null) && !Content.IsReadOnly && !ReadOnly;
       moveUpButton.Enabled = itemsListView.SelectedItems.Count == 1 &&
                              itemsListView.SelectedIndices[0] != 0 &&
-                             !Content.IsReadOnly && !ReadOnly;
+                             (Content != null) && !Content.IsReadOnly && !ReadOnly;
       moveDownButton.Enabled = itemsListView.SelectedItems.Count == 1 &&
                                itemsListView.SelectedIndices[0] != itemsListView.Items.Count - 1 &&
-                               !Content.IsReadOnly && !ReadOnly;
-      removeButton.Enabled = itemsListView.SelectedItems.Count > 0 && !Content.IsReadOnly && !ReadOnly;
+                               (Content != null) && !Content.IsReadOnly && !ReadOnly;
+      removeButton.Enabled = itemsListView.SelectedItems.Count > 0 && (Content != null) && !Content.IsReadOnly && !ReadOnly;
 
       if (itemsListView.SelectedItems.Count == 1) {