selecting combobox item using ui automation

Question

how do I select ComboBox\'s SelectedIndex = -1?

I wrote a code to automate testing:

AutomationElement aeBuildMachine = null;
int count =         


        

Answer 1

  public static void SetComboBox(AutomationElement ComboxBox, string SelectedValue)
        {
            AutomationElement ListBox = ComboxBox.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.AutomationIdProperty, "ListBox"));
            AutomationElement SelectedItem = ListBox.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.NameProperty, SelectedValue));
            ((SelectionItemPattern)SelectedItem.GetCurrentPattern(SelectionItemPattern.Pattern)).Select();
        }


Instruction on how to use:
1) Copy and Paste into Utility Class
2) Find your ComboBox AutomationElement
3) Utility.SetCombox(ComboxAutomationElement, "SelectedText")

To understand:

Tree structure of ComboBox as follow:

ComboBox->ListBox (children)->ListItems(children) [each combobox has a ListBox as a child, and the ListBox has all ListItems as children].

Each ListItem has SelectedItemPattern, invoke which you want to select. 

I later found out that "Shaz " has better coding, and i vote him as the best code.

** Comment: To do UIAAutomation, you must map the AutomationElements of your application to a TreeView, which makes everything simple and understood.