Problem with ComboBox when trying to change selection

Hello, I am experiencing the following issue with ComboBox:

Scenario:

1. Open Microsoft Timesheets Application
2. For each available week 2.1 Press Add Timesheet button 2.2 Select Week 2.3 Press Cancel button

Expected Behavior:

1. The Driver will click on Add Sheet button
2. The Driver will select the parsed week from ComboBox
3. The Driver will click Cancel button

Observed behavior: After the first iteration is completed successfully, the second iteration is opening the drop down menu, but its throwing an exception that the element could not be found.

I have the example code here:

foreach (var week in dateProvider)
            {
                application.GetInstance<HomePage>()
                    .PressAddButton()
                    .SelectTimesheetPeriod(week)
                    .PressCancelButton();
            }

dateProvider is a List<string> which has 20 elements.

public class HomePage : Invoker
    {
        protected WindowsElement DatesComboBox => this.Driver.FindElementByAccessibilityId("timesheetPeriodField");
        
        public HomePage SelectTimesheetPeriod(string value)
        {
                        DatesComboBox.Click();

            DatesComboBox.FindElementByName(value).Click();

            return this;
        }
    }

Where value is something like “Mon, ‎Jul‎ 16 - Sun, May 22”

And just in case the GetInstance implementation to remove the suspicion: Its just returning me same instance of the Driver if its already instantiated.

public T GetInstance<T>() where T : GlobalStepInvoker, new()
        {
            if (this._instances.All(i => i.Key != typeof(T)))
            {
                var instance = new T();
                instance.WindowsDriver = this.Driver;
                this._instances.Add(typeof(T), instance);
            }
            return (T)this._instances[typeof(T)];
        }

I have tried with xpaths such as

this.Driver.FindElementByXPath($"//ListItem[contains(@Name, '{value}')]");
this.Driver.FindElementByXPath($"//ListItem[starts-with(@Name, \"{value}\")]");

this.DatesComboBox.FindElementByXPath($"//ListItem[contains(@Name, '{value}')]");
this.DatesComboBox.FindElementByXPath($"//ListItem[starts-with(@Name, \"{value}\")]");

Also tried to select the same value again:

foreach (var week in dateProvider)
            {
                application.GetInstance<HomePage>()
                    .PressAddButton()
                    .SelectTimesheetPeriod(dateProvider[0])
                    .PressCancelButton();
            }

EDIT:: The UI Recorder provided by Microsoft recorded following this structure

"/Pane[@Name=\"Desktop 1\"][@ClassName=\"#32769\"]
/Window[@Name=\"Timesheets\"][@ClassName=\"ApplicationFrameWindow\"]
/Window[@Name=\"Timesheets\"][@ClassName=\"Windows.UI.Core.CoreWindow\"]
/Pane[@ClassName=\"Web Platform Embedding\"]
/Pane[@Name=\"Timesheets\"][@ClassName=\"Internet Explorer_Server\"]
/Pane[@Name=\"Time\"]
/Group[@AutomationId=\"newTimesheetPanel\"][@Name=\"New Timesheet Panel\"]
/ComboBox[@AutomationId=\"timesheetPeriodField\"]
/List[position()=2]
/ListItem[@Name=\"‎Mon‎, ‎Jul‎ ‎16 - ‎Sun‎, ‎Jul‎ ‎22\"]"

but none changed the result, exact same behavior.

I have checked all the strings, they check-out so I am confident in my List of strings…

Any suggestions ? Am I missing something else ? Making a mistake or ? Or is a defect ?

[hassanuz]

Hi @martinikolaev,

For WinAppDriver to interact with the combo box, you would have to initiate a desktop session and interact with the combo box elements that way.

[hassanuz]

Closing issue. If anyone has anything to follow-up with, please create a new ticket.