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# Standard Windows code samples (.NET SDK)

In this topic:

## End-to-End: Select an item in a combo box

The following example uses standard Windows objects, such as, IWindow, IMenu and IComboBox and their respective properties to select a font type in a combo box.

    // The example below uses standard Windows objects, such as, IWindow, IMenu and IComboBox
    // and their respective properties, to select a font type in a combo box.

    [Test]
    public void TestComboBox()
    {

    	// Following is the program flow:
    	// 1. Launch notepad.
    	// 2. Open the Format > Font menu item.
    	// 3. Select "Arial" from the Font combobox.
    	// 4. Use the Verify statement to verify that "Arial" is the selected font in the combobox.

    	Process appProcess = new Process { StartInfo = { FileName = @"C:\Windows\System32\notepad.exe" } };
    	appProcess.Start();

    	// Pause to ensure Notepad has fully opened on the computer.
    	Thread.Sleep(4 * 1000);

    	// Locate the Notepad window and assign it to an IWindow object.
    	IWindow notepadWindow = Desktop.Describe<IWindow>(new WindowDescription
    	{
    		WindowClassRegExp = "Notepad",
    		WindowTitleRegExp = " Notepad"
    	});

    	// Locate the Notepad menu and assign it to an IMenu object.
    	IMenu notepadMenu = notepadWindow.Describe<IMenu>(new MenuDescription(MenuType.Menu));

    	// Build the path for the Font menu item. (The second item in the Format menu in Notepad)
    	var path = notepadMenu.BuildMenuPath("Format", 2);

    	// Use the path to retrieve the actual Font menu item object.
    	var menuItem = notepadMenu.GetItem(path);

    	//Open the Font dialog using the font menu item.
    	notepadMenu.Select(menuItem);

    	// Locate the Font dialog box and assign it to an IDialog object.
    	IDialog notepadFontDialog = notepadWindow.Describe<IDialog>(new DialogDescription
    	{
    		WindowTitleRegExp = "Font"
    	});

    	// Locate the Font combobox in the Font dialog box and assign it to an IComboBox object.
    	IComboBox fontsComboBox = notepadFontDialog.Describe<IComboBox>(new ComboBoxDescription
    	{
    		AttachedText = @"&Font:",
    		NativeClass = @"ComboBox"
    	});

    	// Select "Arial" font in the combobox
    	fontsComboBox.Select("Arial");

    	// Get the selected combobox item
    	var selectedFont = fontsComboBox.SelectedItem;

    	// Verify the selected combobox item is "Arial"
    	Verify.AreEqual("Arial", selectedFont, "TestComboBox-Verify-Font", "Verify the selected combobox item is 'Arial'.");

    	// Locate the Cancel button in the dialog box and assign it to an IButton object.
    	IButton cancelButton = notepadFontDialog.Describe<IButton>(new ButtonDescription
    	{
    		Text = @"Cancel",
    		NativeClass = @"Button"
    	});

    	// Clicks "Cancel" in the dialog box.
    	cancelButton.Click();

    	// Build the path for the Exit menu item. (The seventh item in the File menu in Notepad)
    	path = notepadMenu.BuildMenuPath("File", 7);
    	menuItem = notepadMenu.GetItem(path);

    	// Exits and closes Notepad.
    	notepadMenu.Select(menuItem);
    }

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## End-to-End: Locate a button using Visual Relation Identification (VRI)

The following example uses Visual Relation Identification (VRI) to locate and click buttons in the standard Windows calculator.

    // The example below uses Visual Relation Identification (VRI)
    // to locate and click buttons in the standard Windows calculator.

    [Test]
    public void TestCalcButtonsUsingVri()
    {

    	/* Following is the program flow:
    	               1. Launch calculator.
    	               2. Locate buttons number 2 and 4 using their WindowId.
    	               3. Locate button number 1 using VRI, specifying the location of
    	                  button number 1 in relation to buttons number 2 and 4.
    	               4. Click button number 1.
    	               5. Verify "1" is printed in the calculator's static text control.
    	            */

    	Process appProcess = new Process { StartInfo = { FileName = @"C:\Windows\System32\calc.exe" } };
    	appProcess.Start();

    	//Pause to ensure Calculator has fully opened on the computer.
    	Thread.Sleep(4 * 1000);

    	//Create the WindowDescription object for the IWindow
    	var calculatorDescription = new WindowDescription
    	{
    		WindowClassRegExp = "CalcFrame",
    		WindowTitleRegExp = "Calculator"
    	};

    	// Locate the Calculator window and assign it to an IWindow object.
    	IWindow calculator = Desktop.Describe<IWindow>(calculatorDescription);

    	// Locate buttons number 2 and 4 in the calculator.
    	var button2 =
    		calculator.Describe<IButton>(new ButtonDescription { WindowId = 132, NativeClass = "Button" });
    	var button4 =
    		calculator.Describe<IButton>(new ButtonDescription { WindowId = 134, NativeClass = "Button" });

    	// Locate button number 1 in the calculator based on the location of buttons number 2 and 4.
    	var button1 = calculator.Describe<IButton>(
    	new ButtonDescription
    	{
    		NativeClass = "Button",
    		Vri =
    		{
    			new VisualRelation
    			{
    				// Button number 2 is to the right of button number 1.
    				TestObject = button2,
    				HorizontalRelation = HorizontalVisualRelation.Right,
    			},
    			new VisualRelation
    			{
    				// Button number 4 is above the button number 1.
    				TestObject = button4,
    				VerticalRelation = VerticalVisualRelation.Above,
    			}
    		}
    	});

    	// Click button number 1.
    	button1.Click();

    	// Locate the calculator's output screen.
    	var textBox = calculator.Describe<IStatic>(
    	new StaticDescription { WindowId = 150, NativeClass = "Static" });

    	var visibleText = textBox.GetVisibleText();

    	// Ensure that number "1" appears on the calculator's output screen.
    	Verify.AreEqual("1", visibleText, "TestCalcButtonsUsingVri", "Verify that the number '1' appears on the calculator's output screen.");

    	// Exit and close the calculator.
    	appProcess.Kill();
    }

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