问题描述
我正在尝试在Windows Phone 8.1通用应用程序中使用Dispatcher.BeginInvoke方法。
但是，Dispatcher.BeginInvoke似乎不是现有的！
使用System.Windows.Threading;也不存在！
我收到namesepace不存在的错误消息，我可能错过了一个引用程序集。
我该怎么办？
我记得我在使用VS 2013开发Windows Phone 8.0项目时曾经使用过这种方法。 />
现在我有VS 2013和Windows 8.1通用应用程序项目（但我正在开发项目的Windows Phone 8.1部分）。
有什么问题？
感谢任何提示！
I am trying to use the method "Dispatcher.BeginInvoke" in a Windows Phone 8.1 Universal App.
However, "Dispatcher.BeginInvoke" seems not to be existing!
"using System.Windows.Threading;" also does not exist!
I get the error message that the namesepace does not exist and I may be missing a reference assembly.
What shall I do?
I remember that I used this method in past when developing a Windows Phone 8.0 Project with VS 2013.
Now I have VS 2013 and a Windows 8.1 Universal App Project (but I am developing the Windows Phone 8.1 part of the project).
What is wrong?
Thanks for any hints!
public void XMPPClient_OnStateChanged(object sender, EventArgs e)
{
switch (xmppClient.XMPPState)
{
case XMPPState.Ready:
if (IsXmppSuccess)
{
this.Dispatcher.BeginInvoke(() =>
{
NavigationService.Navigate((new Uri("/Output.xaml?key=success", UriKind.Relative)));//error
});
//var dispatcher = Windows.UI.Core.CoreWindow.GetForCurrentThread().Dispatcher;
//var ignored = dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
//{
// // update on ui thread
//});
}推荐答案
public async void XMPPClient_OnStateChanged(object sender, EventArgs e)
{
switch (xmppClient.XMPPState)
{
case XMPPState.Ready:
if (IsXmppSuccess)
{
await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
NavigationService.Navigate((new Uri("/Output.xaml?key=success", UriKind.Relative)));
}
}
}
}
根据 [ ^ ]，旧的API仍然适用于Silverlight应用程序，但不适用于商店应用程序。
According to this StackOverflow answer[^], the old APIs still exist for Silverlight apps, but not for Store apps.
这篇关于" Dispatcher.BeginInvoke"似乎不存在！在windowsphone 8.1中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！