MVC 4 - Exception Helper - asp.net-mvc-4

Question

In mvc 4 (but I think in all mvc version) I need to intercept a DbEntityValidationException.
In this phase I need to show the error that is in this object, in a simple log.
In the catch, I have this code:
foreach (var eve in EventityValidationErrors)
{
foreach(var ve in eve.ValidationErros)
{
Console.Writeline(ve.PropertyName,ve.ErrorMessage)
}
}
and it's very useful.
Now, my work is try to show this Exception info (only in develop phase) in a View.
Does someone know if there is a rapid way to do it? (ideally with external nuget component)

Answer 1

Elmah has a nuget package and gives a rapid way to present detailed errors.
You would need to change your catch just a little. That is catch your exception, create a new exception, which includes your data, and then throw this exception and let Elmah deal with it.
catch(DbEntityValidationException dbEx)
{
var sb = new StringBuilder();
foreach (var eve in dbEx.EntityValidationErrors)
{
foreach(var ve in eve.ValidationErrors)
{
sb.Append(ve.PropertyName);
sb.Append(ve.ErrorMessage); //format to your needs
}
}
var detailedException = new Exception(sb.ToString(), dbEx)
}
There is plenty of documentation on how to setup Elmah to catch all unhandled mvc exceptions.