Question

我在我的应用程序中使用性能进度条。我正在做的是在开始一些冗长的操作之前使进度条可见性变为Visible，并在操作完成时将其折叠。但是在开始该操作之前它是不可见的。这是我的代码

  ucSearch.prograssBarCanvas.Visibility = System.Windows.Visibility.Visible;
        var obj = wb1.InvokeScript("SearchText", ucSearch.txtSearch.Text.Trim());
        var result = JsonConvert.DeserializeObject<List<BookChapter>>(obj.ToString());
        if (result.Count == 0)
        {
            ucSearch.txtBlMessage.Visibility = System.Windows.Visibility.Visible;
            ucSearch.lstBxResults.Visibility = System.Windows.Visibility.Collapsed;
        }
        else
        {
            ucSearch.txtBlMessage.Visibility = System.Windows.Visibility.Collapsed;
            ucSearch.lstBxResults.Visibility = System.Windows.Visibility.Visible;
        }

        ucSearch.lstBxResults.DataContext = null;
        ucSearch.lstBxResults.DataContext = result;
        ucSearch.prograssBarCanvas.Visibility = System.Windows.Visibility.Collapsed;

我想问为什么它不可见？

Answer 1

确保进度条的IsEnabled和IsIndeterminate属性为true。

Answer 2

您可以通过此链接http://social.msdn.microsoft.com/Forums/en-US/wpdevelop/thread/b9755315-dd90-42f3-87be-0994415e8795

获得帮助

性能进度栏无法看到

2 个答案: