Use the [`Window.Deactivated` event](http://msdn.microsoft.com/en-us/library/system.windows.window.deactivated.aspx).

You may be looking for the [`Application.Deactivated` event](http://msdn.microsoft.com/en-us/library/system.windows.application.deactivated.aspx), which fires only if the user switched to a different application.

Can somebody clarify the meaning of [`PipeTransmissionMode.Message`](http://msdn.microsoft.com/en-us/library/system.io.pipes.pipetransmissionmode.aspx) in .NET?

How does .NET distinguish one message passed through the pipe from another?

* Can I serialize an object using a [`BinaryFormatter`](http://msdn.microsoft.com/en-us/library/system.runtime.serialization.formatters.binary.binaryformatter.aspx) and then pass it through the pipe as a message? 
* Or are only string messages allowed when the pipe is in `PipeTransmissionMode.Message` mode?

PipeTransmissionMode.Message: How do .NET named pipes distinguish between messages?

I&#39;m looking for a way to configure a few options in Folder Option dialog of Windows Explorer through Powershell.

The options are:

- Choose &quot;Show hidden files, folders, and drives&quot;
- Uncheck &quot;Hide extensions for known file types&quot;
- Uncheck &quot;Hide protected operating system files (Recommended)&quot;

Configure Windows Explorer Folder Options through Powershell

How do I detect when my window loses focus?

WPF: Detect when Window loses focus

<p>How do I detect when my window loses focus?</p>


I have the following sample code that zooms each time a button is pressed:

XAML:

    &lt;Window x:Class=&quot;WpfApplication12.MainWindow&quot;
            xmlns=&quot;http://schemas.microsoft.com/winfx/2006/xaml/presentation&quot;
            xmlns:x=&quot;http://schemas.microsoft.com/winfx/2006/xaml&quot;
            Title=&quot;MainWindow&quot; Height=&quot;350&quot; Width=&quot;525&quot;&gt;

        &lt;Canvas x:Name=&quot;myCanvas&quot;&gt;

            &lt;Canvas.LayoutTransform&gt;
                &lt;ScaleTransform x:Name=&quot;myScaleTransform&quot; /&gt;
            &lt;/Canvas.LayoutTransform&gt; 

            &lt;Button Content=&quot;Button&quot; 
                    Name=&quot;myButton&quot; 
                    Canvas.Left=&quot;50&quot; 
                    Canvas.Top=&quot;50&quot; 
                    Click=&quot;myButton_Click&quot; /&gt;
        &lt;/Canvas&gt;
    &lt;/Window&gt;

*.cs

    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void myButton_Click(object sender, RoutedEventArgs e)
        {
            Console.WriteLine(&quot;scale {0}, location: {1}&quot;, 
                myScaleTransform.ScaleX,
                myCanvas.PointToScreen(GetMyByttonLocation()));

            myScaleTransform.ScaleX =
                myScaleTransform.ScaleY =
                myScaleTransform.ScaleX + 1;
            
            Console.WriteLine(&quot;scale {0}, location: {1}&quot;,
                myScaleTransform.ScaleX,
                myCanvas.PointToScreen(GetMyByttonLocation()));
        }
        
        private Point GetMyByttonLocation()
        {
            return new Point(
                Canvas.GetLeft(myButton),
                Canvas.GetTop(myButton));
        }
    }

the output is:

    scale 1, location: 296;315
    scale 2, location: 296;315
    
    scale 2, location: 346;365
    scale 3, location: 346;365
    
    scale 3, location: 396;415
    scale 4, location: 396;415


as you can see, there is a problem, that I thought solve by using `Application.DoEvents();` but... it does not exist *a priori* in .NET 4.

What to do?

Where is the Application.DoEvents() in WPF?

I am using a DataGrid in row selection mode (i.e., `SelectionUnit=&quot;FullRow&quot;`). I simply want to remove the border that is being placed around the current cell when the user highlights a row in order to have true full row selection (and no cell level selection). I don&#39;t mind the notion of the grid maintaining the current cell, I just want to remove that pesky current cell border, perhaps by changing the style of the current cell. What is the easiest way to do this?

Disable DataGrid current cell border in FullRow selection mode

I am trying to format a textblock which is bound to a `TimeSpan` property. It works if the property is of type `DateTime` but it fails if it is a `TimeSpan`. I can get it done using a converter. But I am trying to find out if there is any alternatives.

Sample Code:

   
    public TimeSpan MyTime { get; set; }

    public Window2()
    {
        InitializeComponent();
        MyTime = DateTime.Now.TimeOfDay;
        DataContext = this;
    }

**Xaml**

    &lt;TextBlock Text=&quot;{Binding MyTime,StringFormat=HH:mm}&quot;/&gt;

I am expecting the textblock to show only hours and mintes. But it is showing as:

&gt; 19:10:46.8048860



How to format TimeSpan in XAML

I see a lot statements like  

`&lt;TextBox x:Name=&quot;txtInput&quot; /&gt;` 

or like 

    &lt;BooleanToVisibilityConverter x:Key=&quot;boolToVis&quot; /&gt;

Why the `x:` is needed and what it gives me.


    &lt;DockPanel.Resources&gt;
      &lt;c:MyData x:Key=&quot;myDataSource&quot;/&gt;
    &lt;/DockPanel.Resources&gt;

And here we have also the `c:`

Thanks for help



x: meaning in xaml

I have a WPF form with as many as 40 textboxes, with a checkbox for each. Each textbox should be enabled/disabled based on the value of its corresponding checkbox. I&#39;ve seen solutions where we can use `ICommand` to achieve this, but how do I handle 40 individual cases without having 40 `ICommand` implementations?



Content Type	Original Author	Original Content on Stackoverflow
Question	Jonathan Allen	View Question on Stackoverflow
Solution 1 - Wpf	SLaks	View Answer on Stackoverflow

WPF: Detect when Window loses focus

Wpf Problem Overview

Wpf Solutions

Solution 1 - Wpf

Configure Windows Explorer Folder Options through Powershell

PipeTransmissionMode.Message: How do .NET named pipes distinguish between messages?

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