如何从try-catch简化return语句

如何简化以下代码:

try
{
    var metadata = GetMetadata();
    return metadata ?? _provider.GetLatestMetadata(guid);
}
catch (AuthenticationException)
{
    return _provider.GetLatestMetadata(guid);
}
catch (HttpUnauthorizedRequestException)
{
    return _provider.GetLatestMetadata(guid);
}
catch (WebException)
{
    return _provider.GetLatestMetadata(guid);
}
catch (VcenterException)
{
    return _provider.GetLatestMetadata(guid);
}

我想避免代码重复.

可能吗？

如果您不想进行全能并且确实需要避免重复代码,则可以使用异常过滤器捕获特定异常:

try
{
    var metadata = GetMetadata();
    return metadata ?? _provider.GetLatestMetadata(guid);
}
catch (Exception ex) when ( ex is AuthenticationException
                            || ex is HttpUnauthorizedRequestException
                            || ex is WebException
                            || ex is VcenterException
                          )
{
    return _provider.GetLatestMetadata(guid);
}