Best practices for catching and re-throwing .NET exceptions

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The way to preserve the stack trace is through the use of the throw; This is valid as well

try {
  // something that bombs here
} catch (Exception ex)
{
    throw;
}

throw ex; is basically like throwing an exception from that point, so the stack trace would only go to where you are issuing the throw ex; statement.

Mike is also correct, assuming the exception allows you to pass an exception (which is recommended).

Karl Seguin has a great write up on exception handling in his foundations of programming e-book as well, which is a great read.

Edit: Working link to Foundations of Programming pdf. Just search the text for “exception”.

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