System.Reflection.TargetInvocationException error (C#)

Question

I am trying to get an information from the web (adress in my code) with HtmlAgilityPack in C#, but I have to wait until the <div class="center fs22 green lh32"> is loaded on the page.

When I execute this code :

    var url = $"https://www.website.com/";
    var web = new HtmlWeb();
    var doc = web.LoadFromBrowser(url, html =>
    {
        return !html.Contains("<div class=\"center fs22 green lh32\"></div>");
    });
    string adress = doc.DocumentNode
          .SelectSingleNode("//td/span[@id='testedAddress")
          .Attributes["value"].Value;
    Console.WriteLine("Voici l'adresse :",adress);

I always get this error :

Translation : System.Reflection.TargetInvocationException: 'An exception has been raised by the target of an appeal.'

ThreadStateException: Can not instantiate ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2', because the current thread is not a partitioned thread (STA, Single-Threaded Apartment).

How can I get rid of this error ?

Are you by any chance running this code in a separate Thread? — Manfred Radlwimmer, Mar 01 '18 at 09:06
That's odd, usually this only happens when you try to use UI components in a non STA-Thread. — Manfred Radlwimmer, Mar 01 '18 at 09:08
Try setting the thread apartment to STA in your Main() [STAThread] — Oscar, Mar 01 '18 at 09:09
@Lulucmy if that solves you problem, please accept Oscars answer below. — Manfred Radlwimmer, Mar 01 '18 at 09:34

score 3 · Accepted Answer · answered Mar 01 '18 at 09:32

3

Apply STAThreadAttribute to your Main function:

 [STAThread]
 static void Main(string[] args)
 {
     //Your code here
 }

answered Mar 01 '18 at 09:32

Oscar

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System.Reflection.TargetInvocationException error (C#)

1 Answers1