Question

Issue: “The CurrentThread needs to have it’s ApartmentState set to ApartmentState.STA to be able to automate Internet Explorer.”

First of all i have read all the solutions to the problems above and none works for me.May be i am missing something. I have tried adding Execution Thread entry into my app.config, also tried setting STAThread attribute and i am still facing the same exception as stated above.

Tools: Visual Studio 2010, Watin 2.1, c#

Scenario: Trying to run a unit test [watin script in c#] from a web application upon a button click. But the above exception is thrown when the script is about to launch IE on the following line :
IE mybrowser = new IE (“SomeURL here”);

Any Thoughts ?

Answer 1

Got it from a friend. We actually dont have to add any app.config entry. Just start the thread in a single state. In my case, i wrote the following code in my button click handler:

System.Threading.Thread th = new Thread(new ThreadStart(Test));
        th.SetApartmentState(ApartmentState.STA);
        th.Start();
        th.Join();

and i moved the call to unit test in the private. TEST method as follows:
 private void Test()
    {
        var som = new Project.ClassName();
        som.MethodToExecute();
}