Throw statement with no expression
You can also use the throw e syntax in a catch block to instantiate a new exception that you pass on to the caller. In this case, the stack trace of the original exception, which is available from the StackTrace property, is not preserved.
public void foo()
{
try {
// some code
}
catch (Exception e)
{
throw e;
}
}
vs
public void foo()
{
try {
// some code
}
catch (Exception)
{
throw;
}
}