Context menu – Icon out of place in the dynamic menu in WPF

I'm trying to create a dynamic menu in WPF.
The following code works fine, but the problem is that it does not show the icon image on the left side, but in the header section.
Here is my XAML code


    
        
            
                
                    
                        
                            
                                
                                    
                                
                            
                        
                    
                
            
        
           

Now, it looks like below. But I want to show the icon on the left side.

enter the description of the image here