本文整理汇总了C#中IControl.FindNameScope方法的典型用法代码示例。如果您正苦于以下问题：C# IControl.FindNameScope方法的具体用法？C# IControl.FindNameScope怎么用？C# IControl.FindNameScope使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IControl的用法示例。
在下文中一共展示了IControl.FindNameScope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: Track
/// <summary>
/// Tracks a named control relative to another control.
/// </summary>
/// <param name="relativeTo">
/// The control relative from which the other control should be found.
/// </param>
/// <param name="name">The name of the control to find.</param>
public static IObservable<IControl> Track(IControl relativeTo, string name)
{
var attached = Observable.FromEventPattern<LogicalTreeAttachmentEventArgs>(
x => relativeTo.AttachedToLogicalTree += x,
x => relativeTo.DetachedFromLogicalTree += x)
.Select(x => ((IControl)x.Sender).FindNameScope())
.StartWith(relativeTo.FindNameScope());
var detached = Observable.FromEventPattern<LogicalTreeAttachmentEventArgs>(
x => relativeTo.DetachedFromLogicalTree += x,
x => relativeTo.DetachedFromLogicalTree += x)
.Select(x => (INameScope)null);
return attached.Merge(detached).Select(nameScope =>
{
if (nameScope != null)
{
var registered = Observable.FromEventPattern<NameScopeEventArgs>(
x => nameScope.Registered += x,
x => nameScope.Registered -= x)
.Where(x => x.EventArgs.Name == name)
.Select(x => x.EventArgs.Element)
.OfType<IControl>();
var unregistered = Observable.FromEventPattern<NameScopeEventArgs>(
x => nameScope.Unregistered += x,
x => nameScope.Unregistered -= x)
.Where(x => x.EventArgs.Name == name)
.Select(_ => (IControl)null);
return registered
.StartWith(nameScope.Find<IControl>(name))
.Merge(unregistered);
}
else
{
return Observable.Return<IControl>(null);
}
}).Switch();
}示例2: LookupNamedControl
private IControl LookupNamedControl(IControl target)
{
Contract.Requires<ArgumentNullException>(target != null);
var nameScope = target.FindNameScope();
if (nameScope == null)
{
throw new InvalidOperationException(
"Could not find name scope for ElementName binding.");
}
return nameScope.Find<IControl>(ElementName);
}