public static void RemoveAutomationPropertyChangedEventHandler(AutomationElement element, AutomationPropertyChangedEventHandler eventHandler)
{
Utility.ValidateArgumentNonNull(element, "element");
Utility.ValidateArgumentNonNull(eventHandler, "eventHandler");
try
{
PropertyEventListener listener = (PropertyEventListener)ClientEventList.Remove(AutomationElement.AutomationPropertyChangedEvent, element, eventHandler);
Factory.RemovePropertyChangedEventHandler(element.NativeElement, listener);
}
catch (System.Runtime.InteropServices.COMException e)
{
Exception newEx; if (Utility.ConvertException(e, out newEx))
{
throw newEx;
}
else
{
throw;
}
}
}
public static void AddAutomationPropertyChangedEventHandler(AutomationElement element, TreeScope scope, AutomationPropertyChangedEventHandler eventHandler, params AutomationProperty[] properties)
{
Utility.ValidateArgumentNonNull(element, "element");
Utility.ValidateArgumentNonNull(eventHandler, "eventHandler");
Utility.ValidateArgumentNonNull(properties, "properties");
if (properties.Length == 0)
{
throw new ArgumentException("AtLeastOnePropertyMustBeSpecified");
}
int[] propertyIdArray = new int[properties.Length];
for (int i = 0; i < properties.Length; ++i)
{
Utility.ValidateArgumentNonNull(properties[i], "properties");
propertyIdArray[i] = properties[i].Id;
}
try
{
PropertyEventListener listener = new PropertyEventListener(AutomationElement.StructureChangedEvent, element, eventHandler);
Factory.AddPropertyChangedEventHandler(
element.NativeElement,
(UIAutomationClient.TreeScope)scope,
CacheRequest.CurrentNativeCacheRequest,
listener,
propertyIdArray);
ClientEventList.Add(listener);
}
catch (System.Runtime.InteropServices.COMException e)
{
Exception newEx; if (Utility.ConvertException(e, out newEx))
{
throw newEx;
}
else
{
throw;
}
}
}
