Throwing an exception from a different method while preserving its information

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Occasionally you’d want to catch an exception and throw it from a different thread or method while preserving the original exception stack. This can be done with ExceptionDispatchInfo:

using System.Runtime.ExceptionServices;

void Main()
{
    ExceptionDispatchInfo capturedException = null;
    try
    {
        throw new Exception();
    }
    catch (Exception ex)
    {
        capturedException = ExceptionDispatchInfo.Capture(ex);
    }
    
    Foo(capturedException);
}

void Foo(ExceptionDispatchInfo exceptionDispatchInfo)
{
    // Do stuff

    if (capturedException != null)
    {
        // Exception stack trace will show it was thrown from Main() and not from Foo()
        exceptionDispatchInfo.Throw();
    }
}

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