Please help with the extension methods

[HausBJB]

Hello @rickjet,
first of all great work. thanks for that

I have a problem with the extension methods.

I have the following code that I want to run.

here is the script:

string code = $@"
      public async Task<bool> Run()
      {{
                  var app = FlaUI.Core.Application.Launch(@""C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE"");
                  using (var automation = new UIA3Automation())
                  {{
                      Task.Delay(2000).Wait();
                      var window = app.GetMainWindow(automation);
                      var button1 = window.FindFirstDescendant(cf => cf.ByAutomationId(""msotcidPlaceOfficeStart"")).AsListBoxItem();
                      button1?.Select();
                  }}
      
                  return true;
      }}";

        public async Task<bool> RunCode(string code)
        {
            if (!string.IsNullOrEmpty(code))
            {

                var script = CSharpScriptExecution.CreateDefault();

                script.AddNetCoreDefaultReferences();

                script.AddAssembly("FlaUI.Core.dll");
                script.AddAssembly("FlaUI.UIA3.dll");
                script.AddAssembly("System.Diagnostics.Process.dll");
                script.AddAssembly("System.Threading.Tasks.dll");
                
                
                script.AddNamespace("FlaUI.UIA3");
                script.AddNamespace("FlaUI.Core");
                script.AddNamespace("System.Threading.Tasks");

                var result = await script.ExecuteMethodAsync<bool>(code, "Run");

            }

            return true;
        }

But I keep getting the following exception

(30,110): error CS1061: \"AutomationElement\" enthält keine Definition für \"AsListBoxItem\", und es konnte keine zugängliche AsListBoxItem-Erweiterungsmethode gefunden werden, die ein erstes Argument vom Typ \"AutomationElement\" akzeptiert (möglicherweise fehlt eine using-Direktive oder ein Assemblyverweis).\r\n(23,25):

It does not find the extension method, namely this one

var button1 = window.FindFirstDescendant(cf => cf.ByAutomationId("msotcidPlaceOfficeStart")).AsListBoxItem();
AsListBoxItem()

[HausBJB]

Sorry forgot a namespace