How Can I Preserve Exception Details When Re-throwing Exceptions in C#?

Best Practice: C# abnormally re -throw

When processing abnormalities, retaining its

and stack tracking information is important for debugging. This article discusses the best practice of capturing and re -throwing abnormalities to retain these key information.

InnerException The comparison of abnormal processing code blocks

Please consider the following code block:

The key difference between the two code blocks is that they retain the way of abnormal details. By using , the second code block effectively re -throw the current abnormalities without changing the stack tracking or

try
{
    //某些代码
}
catch (Exception ex)
{
    throw ex;
}

. This method ensures that the original abnormal context is retained.

try
{
    //某些代码
}
catch
{
    throw;
}

On the contrary, the first code block showed the capture of the abnormal throw;. However, this operation will use new stack tracking to cover the current stack tracking, starting from re -throwing the InnerException position. Therefore, any stack tracking information after the initial abnormality will be lost.

Other precautions ex ex InnerException It is also recommended to pass the original abnormality as a parameter to the re -thrown abnormalities, allowing downstream code to access the detailed information retained. This can be implemented through the following grammar:

In short, use to retain the original abnormal information when re -throwing abnormalities, including

and stack tracking. This approach is essential for effective debugging and error analysis.

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