.net WPF名称空间问题-进程？

试图让这个例子从

然而，我似乎无法获得下面“进程”的名称空间或语法

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我能找到的唯一进程是System.Diagnostics，它不带任何参数。我想学习的博客文章是off，还是我的位置不对？

看起来写博客的人忘了定义自己的自定义委托Process（这个名字有点奇怪）

它现在应该编译并定义它

但是我喜欢这些名字

private delegate void HideWaitScreenHandler();
private delegate void ShowWaitScreenHandler();

实际上，您可以重构它以使其更简单

private delegate void ShowWaitScreenUIHandler(bool show);

void ShowWaitScreenUIThreaded(bool show)
{
    Process del = new ShowWaitScreenHandler(OnShowWaitScreenUI);
    Dispatcher.Invoke(DispatcherPriority.Normal, del, show);
}

void OnShowWaitScreenUI(bool show)
{
    panelLoading.Visibility = show ? Visibility.Visible : Visibility.Collapsed;
}

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看起来写博客的人忘了定义自己的自定义委托Process（这个名字有点奇怪）

它现在应该编译并定义它

但是我喜欢这些名字

private delegate void HideWaitScreenHandler();
private delegate void ShowWaitScreenHandler();

实际上，您可以重构它以使其更简单

private delegate void ShowWaitScreenUIHandler(bool show);

void ShowWaitScreenUIThreaded(bool show)
{
    Process del = new ShowWaitScreenHandler(OnShowWaitScreenUI);
    Dispatcher.Invoke(DispatcherPriority.Normal, del, show);
}

void OnShowWaitScreenUI(bool show)
{
    panelLoading.Visibility = show ? Visibility.Visible : Visibility.Collapsed;
}

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此处输入错误：流程和ShowWaitScreenHandler需要更改为ShowWaitScreenUIHandler

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DispatcherPriority需要使用。右键单击DispatcherPriority并选择Resolve。

此处输入错误：流程和ShowWaitScreenHandler需要更改为ShowWaitScreenUIHandler

DispatcherPriority需要使用。右键单击DispatcherPriority并选择Resolve

private delegate void Process();

private delegate void HideWaitScreenHandler();
private delegate void ShowWaitScreenHandler();

private delegate void ShowWaitScreenUIHandler(bool show);

void ShowWaitScreenUIThreaded(bool show)
{
    Process del = new ShowWaitScreenHandler(OnShowWaitScreenUI);
    Dispatcher.Invoke(DispatcherPriority.Normal, del, show);
}

void OnShowWaitScreenUI(bool show)
{
    panelLoading.Visibility = show ? Visibility.Visible : Visibility.Collapsed;
}