This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
how to use Java-style throws keyword in C#?
i have a function where an exception occurs
say for example
private void functionName() throws Exception
{
// some code that might throw an exception
}
thanks!
No, because there are no checked exceptions in C#
If you are trying to document exceptions that are thrown, use the standard xml documentation
/// <exception cref="InvalidOperationException">Why it's thrown.</exception>
No. There is no such construct in c#. But you can add the comment to your method like this
/// <exception cref="Exception"></exception>
and it will be visible in IntelliSense
Unfortunately there isn't, and it can be a pain. The remedy is to be more careful with the exceptions that your code throws and how you handle errors.
Related
This question already has answers here:
What kind of Exceptions cannot be handled? [duplicate]
(2 answers)
Closed 8 years ago.
So from http://msdn.microsoft.com/en-us/library/ms173161.aspx
Once an exception is thrown, it propagates up the call stack until a catch statement for the exception is found.
So the implcation is that all exception typess can be either caught by a catch(ExceptionType) or a generic catch.
However this is plainly not true. For example AccessViolationException bypasses standard exception handling
How to handle AccessViolationException
So what other exceptions also bypass standard exception handling?
I would say that a StackOverflowException is most likely unhandled, I'm not aware of others.
This question already has answers here:
How can I determine which exceptions can be thrown by a given method?
(9 answers)
Finding out what exceptions a method might throw in C#
(4 answers)
Closed 9 years ago.
Very simple really - is there a way to check and make a list of all exceptions that a method might throw? I have used try/catch but I want to make sure I didn't miss anything, and going through big files line by line to check if that line is throwing something that might be uncaught on runtime is a pain...
Oh yeah, I am using C#, .NET 4.5 and VS2012 PRO.
Thanks good people.
In C#, all objects that are thrown must derive from System.Exception. If you catch System.Exception, you catch them all, no matter what subtype.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How to throw a SqlException(need for mocking)
I want to mock the throwing of SqlException when ExecuteNonQuery is executed;
System.Data.SqlClient.Moles.MSqlCommand.AllInstances.ExecuteNonQuery =
(command) =>
{
throw new MSqlException();
};
This doesn't work as the compiler complains MSqlException doesn't derive from Exception. Am I going about this the wrong way, will I need to wrap ExecuteNonQuery in my code to achieve this?
If you were to throw a SqlException I would expect this to work. It inherits from DbException, which inherits from ExternalException, which inherits from ExternalException.
If you write a custom exception (I am assuming MSqlException is one), you should still inherit from an exception class...
public class MSqlException: SqlException {
The answer was found in another question. The mole needs casting.
stackoverflow.com/a/3795751/771698
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Why are Exceptions not Checked in .NET?
Java makes distinction of "checked exception" and "unchecked exception", does C# have the similiar concepts?
C# does not support checked exceptions. You can read up on why the original design did not include checked exceptions.
Link: The Trouble with Checked Exceptions
No, there's no such distinction in C#, nor in many other modern languages, even those that run in the JVM (such as Scala).
From the C# Faq, on MSDN: http://blogs.msdn.com/b/csharpfaq/archive/2004/03/12/why-doesn-t-c-have-checked-exceptions.aspx
Nope, it does not. No. Thankfully!
The Trouble With Checked
Exceptions (Anders Hejlsberg,
Bruce Eckel, Bill Venners)
Does Java Need Checked
Exceptions? (Bruce Eckel)
Why doesn't C# have exception
specifications? (Anson Horton)
without the CLR itself supporting checked exceptions, it would be effectively impossible for C# to do so alone.
This question already has answers here:
Is there a way to log or intercept First Chance Exceptions
(3 answers)
Closed 5 years ago.
Is there a way to catch First-Chance exceptions, and log them without running under a debugger?
I suppose another way to ask the question is can I write something that will act like a debugger being attached to my process and see what is going wrong while it happens?
If you are on .NET 4.0, you can use theAppDomain.FirstChanceExceptionevent to get notification of exceptions.