本文整理匯總了C#中System.Windows.Automation.ExpandCollapsePattern.Expand方法的典型用法代碼示例。如果您正苦於以下問題：C# ExpandCollapsePattern.Expand方法的具體用法？C# ExpandCollapsePattern.Expand怎麽用？C# ExpandCollapsePattern.Expand使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。
在下文中一共展示了ExpandCollapsePattern.Expand方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: GetExpandCollapsePattern
///--------------------------------------------------------------------
/// <summary>
/// Obtains an ExpandCollapsePattern control pattern from an
/// automation element.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// A ExpandCollapsePattern object.
/// </returns>
///--------------------------------------------------------------------
private ExpandCollapsePattern GetExpandCollapsePattern(
AutomationElement targetControl)
{
ExpandCollapsePattern expandCollapsePattern = null;
try
{
expandCollapsePattern =
targetControl.GetCurrentPattern(
ExpandCollapsePattern.Pattern)
as ExpandCollapsePattern;
}
// Object doesn't support the ExpandCollapsePattern control pattern.
catch (InvalidOperationException)
{
return null;
}
return expandCollapsePattern;
}示例2: ExpandCollapseMenuItem
///--------------------------------------------------------------------
/// <summary>
/// Programmatically expand or collapse a menu item.
/// </summary>
/// <param name="menuItem">
/// The target menu item.
/// </param>
///--------------------------------------------------------------------
private void ExpandCollapseMenuItem(
AutomationElement menuItem)
{
if (menuItem == null)
{
throw new ArgumentNullException(
"AutomationElement argument cannot be null.");
}
ExpandCollapsePattern expandCollapsePattern =
GetExpandCollapsePattern(menuItem);
if (expandCollapsePattern == null)
{
return;
}
if (expandCollapsePattern.Current.ExpandCollapseState ==
ExpandCollapseState.LeafNode)
{
return;
}
try
{
if (expandCollapsePattern.Current.ExpandCollapseState == ExpandCollapseState.Expanded)
{
// Collapse the menu item.
expandCollapsePattern.Collapse();
}
else if (expandCollapsePattern.Current.ExpandCollapseState == ExpandCollapseState.Collapsed ||
expandCollapsePattern.Current.ExpandCollapseState == ExpandCollapseState.PartiallyExpanded)
{
// Expand the menu item.
expandCollapsePattern.Expand();
}
}
// Control is not enabled
catch (ElementNotEnabledException)
{
// TO DO: error handling.
}
// Control is unable to perform operation.
catch (InvalidOperationException)
{
// TO DO: error handling.
}
}