WPF控件可见性和按钮单击生命周期 [英] WPF Control Visibility and Button Click Lifecycle

问题描述

如何使进度条可见，然后检查连接，然后使进度条隐藏.按照那个顺序！

How can I make the progessbar visible, then check the connection, then make the progressbar hidden. In that Order!

private void button_Click(...)
{
    progBar.Visibility = Visibility.Visible;
    CheckTheConnection();
    progBar.Visibility = Visibility.Hidden;
}

如果删除隐藏"属性，则将运行CheckConnection，然后progBar变为可见.这与我想要的相反.

If I remove the Hidden attribute, the CheckConnection runs then the progBar becomes visible. This is the opposite of what I want.

推荐答案

将CheckConnection中的代码放入线程中，然后通过适当的机制显示/更新进度条(调用)

Put the code in CheckConnection into a thread, and then display/update the progressbar via appropriate mechanisms (Invoke).

根据您对John的答复，您似乎需要对如何使用WPF中的线程有基本的了解.这是一篇有关以下主题的好文章:

http://msdn.microsoft.com/en-us/magazine/cc163328.aspx [ ^ ]

请注意，跨线程访问成员并不那么复杂(尽管您需要小心).

Based on your reply to John, it seems you need to get a basic understanding on how to use threads from WPF. This is a good article on the topic:

http://msdn.microsoft.com/en-us/magazine/cc163328.aspx[^]

Notice how accessing members across the threads is not that complex (although you do need to be careful).

http://www.wpf100.com/html/5/2012-04/article-215.html

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