Manage errors without try/catch in event

I need to create some error handling/manager without try/catch. The question is, how can get errors inside event in another class through BoundDataChanged? Since I need bound data.

Index.cshtml
@model controlData
...
@Control.Bind(model).GetHtml();



class public Control{
public List<Error> Errors{get;set;}
public int Width {get;set;}
public BoundDataChangedEventHandler BoundDataChanged {get;set;}
public control(ControlConfiguration config){

Width = config.width;
 BoundDataChanged = (sender, args) => {
   //The problem come here, this event only rises when I have Bind in my cshtml.
//And there is the only way to get bound data.
}
ErrorManager.getErrorsControl(this);
} 

public class ErrorManager{

public List<Error> getErrorsControl(Control con){
  List<Error> errors = new List<Error>();
  if (con.width>1000){
    errors.Add(new Error(){...});
  }
  if newError...
  if newError...
 return  errors;

}


//Here how can I manage BoundDataChanged ??
    }