C# - how do I prevent mousewheel-scrolling in my combobox?

Question

I have a combobox and I want to prevent the user from scrolling through the items with the mousewheel.

Is there an easy way to do that?

(C#, VS2008)

Answer 1

My Combobox's were placed inside a DataGrid [C#, WPF XAML] just like this:

    
        
            ...
            
                
                    
                        
                    
                
            
            ...
        
    

So whenever a DropDown was closed after selecting a Value, the Mousewheel would scroll that Combobox's Items and modify my Selection.

I ended up modifying my XAML to look like this:

    
        
            
        
        
            ...
            
                
                    
                        
                    
                
            
            ...
        
    

And adding these lines in codebehind

        public void dgvCombobox_Loaded(Object sender, RoutedEventArgs e)
        {
            ((ComboBox)sender).DropDownClosed -= ComboBox_OnDropDownClosed;
            ((ComboBox)sender).DropDownClosed += new System.EventHandler(ComboBox_OnDropDownClosed);
        }

        void ComboBox_OnDropDownClosed(object sender, System.EventArgs e)
        {
            dgvFieldsMapping.Focus();
        }

In this way I just move the Focus away from the ComboBox to the outer DataGrid after closing its corresponding DropDown, so I don't need to add any dummy FrameWorkElement