本文整理匯總了C#中Windows.UI.Xaml.Controls.ContentControl.ClearValue方法的典型用法代碼示例。如果您正苦於以下問題：C# ContentControl.ClearValue方法的具體用法？C# ContentControl.ClearValue怎麽用？C# ContentControl.ClearValue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。您也可以進一步了解該方法所在類Windows.UI.Xaml.Controls.ContentControl的用法示例。
在下文中一共展示了ContentControl.ClearValue方法的1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: UpdateSelectedValue
/// <summary>
/// Update the selected value of the of the TreeView based on the value
/// of the currently selected TreeViewItem and the SelectedValuePath.
/// </summary>
/// <param name="item">
/// Value of the currently selected TreeViewItem.
/// </param>
private void UpdateSelectedValue(object item)
{
if (item != null)
{
string path = SelectedValuePath;
if (string.IsNullOrEmpty(path))
{
SelectedValue = item;
}
else
{
// Since we don't have the ability to evaluate a
// BindingExpression, we'll just create a new temporary
// control to bind the value to which we can then copy out
Binding binding = new Binding
{
Path = new PropertyPath(path),
Source = item
};
ContentControl temp = new ContentControl();
temp.SetBinding(ContentControl.ContentProperty, binding);
SelectedValue = temp.Content;
// Remove the Binding once we have the value (this is
// especially important if the value is a UIElement because
// it should not exist in the visual tree once we've
// finished)
temp.ClearValue(ContentControl.ContentProperty);
}
}
else
{
ClearValue(SelectedValueProperty);
}
}