本文整理汇总了C#中System.Windows.Automation.SelectionItemPattern.RemoveFromSelection方法的典型用法代码示例。如果您正苦于以下问题：C# SelectionItemPattern.RemoveFromSelection方法的具体用法？C# SelectionItemPattern.RemoveFromSelection怎么用？C# SelectionItemPattern.RemoveFromSelection使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了SelectionItemPattern.RemoveFromSelection方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetSelectionItemContainer
///--------------------------------------------------------------------
/// <summary>
/// Retrieves the selection container for a selection item.
/// </summary>
/// <param name="selectionItem">
/// An automation element that supports SelectionItemPattern.
/// </param>
///--------------------------------------------------------------------
private AutomationElement GetSelectionItemContainer(
AutomationElement selectionItem)
{
// Selection item cannot be null
if (selectionItem == null)
{
throw new ArgumentException();
}
SelectionItemPattern selectionItemPattern =
selectionItem.GetCurrentPattern(SelectionItemPattern.Pattern)
as SelectionItemPattern;
if (selectionItemPattern == null)
{
return null;
}
else
{
return selectionItemPattern.Current.SelectionContainer;
}
}示例2: RemoveItemFromSelection
///--------------------------------------------------------------------
/// <summary>
/// Attempts to remove the current item from a collection
/// of selected items.
/// </summary>
/// <param name="selectionItem">
/// An automation element that supports SelectionItemPattern.
/// </param>
///--------------------------------------------------------------------
private void RemoveItemFromSelection(AutomationElement selectionItem)
{
if (selectionItem == null)
{
throw new ArgumentNullException(
"Argument cannot be null or empty.");
}
AutomationElement selectionContainer =
GetSelectionItemContainer(selectionItem);
// Selection container cannot be null
if (selectionContainer == null)
{
throw new ElementNotAvailableException();
}
SelectionPattern selectionPattern =
selectionContainer.GetCurrentPattern(SelectionPattern.Pattern)
as SelectionPattern;
if (selectionPattern == null)
{
return;
}
// Check if a selection is required
if (selectionPattern.Current.IsSelectionRequired &&
(selectionPattern.Current.GetSelection().GetLength(0) <= 1))
{
return;
}
SelectionItemPattern selectionItemPattern =
selectionItem.GetCurrentPattern(
SelectionItemPattern.Pattern)
as SelectionItemPattern;
if ((selectionItemPattern != null) &&
selectionItemPattern.Current.IsSelected)
{
try
{
selectionItemPattern.RemoveFromSelection();
}
catch (InvalidOperationException)
{
// Unable to remove from selection
return;
}
}
}