var editOptions = $.extend(
		    {
		        editData:
			    {
			        Action: 'SreateSomething'
			    }
                			   
               , beforeShowForm: function (form) {
			       var selrow = jQuery('#jqgList').jqGrid('getGridParam', 'selrow');
			       alert(selrow);
                   var MyFieldHere = jQuery('#jqgList').jqGrid('getCell', selrow, 'MyFieldNameHere').toString();
			       
			       EnableDisableControls(MyFieldHere);
			       } 
		    },

            addEditOptions);