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copied!<p>I'm using WPF listView with N number of columns where the 1st column must behave like a margin column and it should remain the 1st all the times </p> <p>How Can I disable the re-order for 1st column only, and keep other columns "reorder-able"?</p> <p>I can disable the drag-drop of the 1st column using IsHitTestVisible property which will disable the mouse inputs, but I noticed that user can drag the 2nd column (for example) and drop it right before the 1st column and this will swap the 1st column with the 2nd column?</p> <p><strong>I figured out how to do it:</strong></p> <p>1) first subscribe to the event:</p> <pre><code>GridView gridView = this.dbListView.View as GridView; gridView.Columns.CollectionChanged += new NotifyCollectionChangedEventHandler(Columns_CollectionChanged); </code></pre> <p>2) Event handler is:</p> <pre><code> /// <summary> /// This event is executed when the header of the list view is changed - /// we need to keep the first element in it's position all the time, so whenever user drags any columns and drops /// it right before the 1st column, we return it to it's original location /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void Columns_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { GridViewColumnCollection collection = (GridViewColumnCollection)sender; if (e.Action == NotifyCollectionChangedAction.Move) //re-order event { if (e.NewStartingIndex == 0) //if any of the columns were dragged rigth before the 1st column { this.Dispatcher.BeginInvoke((Action)delegate { GridView gridView = this.dbListView.View as GridView; //removing the event to ensure the handler will not be called in an infinite loop gridView.Columns.CollectionChanged -= new NotifyCollectionChangedEventHandler(Columns_CollectionChanged); //reverse the re-order move (i.e. rolling back this even) collection.Move(e.NewStartingIndex, e.OldStartingIndex); //re-setup the event to ensure the handler will be called second time gridView.Columns.CollectionChanged += new NotifyCollectionChangedEventHandler(Columns_CollectionChanged); }); } } } </code></pre>

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