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HOW TO Linux Unix

Unix set date and time command

To set date and time use date command with -s parameter

[sourcecode lang=”bash”]
date -s "02/13/2013 17:52:04"
[/sourcecode]

To list the date and time of the server use date command without parameters

[sourcecode lang=”bash”]
date
[/sourcecode]

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Categories
7.0 7.5 C#.NET Microsoft VB.NET Windows Phone

Windows Phone – “Navigation is not allowed when the task is not in the foreground. Error: -2147220990”

When you debug your Windows Phone application that use a task and call the Show method your app crash with the following error message:

System.InvalidOperationException:
Navigation is not allowed when the task is not in the foreground. Error: -2147220990

Solution:

Add Show method in try/catch block

For example:

[sourcecode lang=”CSharp”]
private void appBarButton_Click(object sender, EventArgs e)
{
WebBrowserTask task = new WebBrowserTask();
task.Uri = new Uri("https://www.myerrorsandmysolutions.com/");
try
{
task.Show();
}
catch
{ }
}
[/sourcecode]

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