How to get the user-agent with C#?

Web api?

It's stored in the webheadercollection.

You could try:

if (Request.Headers.Contains("User-Agent"))
{
    var headers = request.Headers.GetValues("User-Agent");

    StringBuilder sb = new StringBuilder();

    foreach (var header in headers)
    {
        sb.Append(header);

        // Re-add spaces stripped when user agent string was split up.
        sb.Append(" ");
    }

    userAgent = sb.ToString().Trim();
}

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Hope that helps

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