C# console doesn't print exception message - asp.net

Question

I have a ASP.NET project and in some part of it I call a business rule to test the form:
[HttpPost]
public ActionResult InsertProduct(Product Product)
{
try
{
InsertProductBLL ProductInsertion = new InsertProductBLL (Product.Value, Product.Description);
ProductInsertion.IsValid();
return PartialView("Success");
}
catch (Exception e)
{
Console.Write(e.Message);
return PartialView("Fail");
}
}
On the BLL, I have this:
public void IsValid()
{
if (Value> 10) ; //I just want the else section
else
{
Exception e = new Exception("Insert a bigger value");
throw e;
}
}
However, the console only prints that the exception has been thrown, but not the message that I asked for. Is there any syntax mistake or something that I just messed up?

Answer 1

You can do something like this,
Create Result Object which can be used to transmit data between layers.
public class Result
{
public HasResult { get; set; }
public ErrorMessage { get; set;}
public SuccessMessage { get; set;}
}
Transfer as a Result Object to the calling layer (here in your case Controller) after all your business validations.
public Result IsValid(int Value)
{
var result = new Result();
result.HasResult = Value > 10;//set this after all your business rules
if(HasResult)
{
result.SuccessMessage = "Success";
}
else
{
result.ErrorMessage = "Insert a bigger value";
}
return result;
}
In Controller
[HttpPost]
public ActionResult InsertProduct(Product Product)
{
var returnMessage = "";
try
{
InsertProductBLL ProductInsertion = new InsertProductBLL (Product.Value, Product.Description);
var result = ProductInsertion.IsValid(Product.Value);
returnMessage = result.HasResult
? result.SuccessMessage
: result.ErrorMessage;
}
catch (Exception e)
{
Console.Write(e.Message);
returnMessage = "Fail";
}
return PartialView(returnMessage);
}