Displaying an image on a form grid in Dynamics AX

Sometimes it is useful to display an image in  a data grid on a from to highlight certain records e.g. records with validation errors as in the example below:

To achieve this requires 2 main steps:

1. Adding a display method on the table/form datasource that returns an ImageRes

 //BP Deviation Documented  
 display ImageRes errorExist()  
 {  
   #resAppl;  
   return this.ErrorLogged ? #ImageError : #ImageBlank2;  
 }  

2. Adding a new field control on the form by right-clicking on the Grid control within the form design and selecting New Control > Window

 

Set the properties of the new control as follows: