Set title to the window.

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It's funny, but I cann't find where I am wrong...
So I have 2 windows. From the first window I'm calling second on button click event:

C#

var window = new WindowButtonClick("Graphic") {DataContext = new GraphicViewModel()};
window.ShowDialog();

Second window is a window, where I load different views( created like userControls). Here is example, how do I call one of them in Xaml:

C#

<Window x:Class="WindowButtonClick"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:graphic="clr-namespace:Windows.Graphic"
WindowStartupLocation="CenterScreen" >
<Window.Resources>
      <DataTemplate DataType="{x:Type graphic:GraphicViewModel}">
        <graphic:Graphic />
      </DataTemplate>
</Window.Resources>
<Grid>
    <ContentControl Content="{Binding}"/>
</Grid>

And here is a constructor of my WindowButtonClick:

C#

InitializeComponent();
Title = Application.Current.Resources[title].ToString();

Title is set to a value from resource, but I cann't see Title on the created window..

Any ideas what's wrong?

Posted 9-Apr-14 4:19am

Alexander Dymshyts

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Comments

Sergey Alexandrovich Kryukov 9-Apr-14 11:58am

Use the debugger and see what is the value of title and Application.Current.Resources[title] before assignment.
—SA

Alexander Dymshyts 10-Apr-14 3:20am

Before assigment value of Title is empty.

Sergey Alexandrovich Kryukov 10-Apr-14 8:45am

I asked about title, not Title; and you keep silence about Application.Current.Resources[title]. Can you debug comprehensively?
—SA

Alexander Dymshyts 10-Apr-14 10:54am

Sorry for misunderstanding. title is "Graphic" and Application.Current.Resources[title] is value from resources with key - "Graphic". In debug it is "Graphic (us)".
After assigning value from resources Title is "Graphic (us)". Before assignment it was empty.

Sergey Alexandrovich Kryukov 10-Apr-14 11:22am

Whatever it is — did you get right string from the resource? Did you get "Graphics (us)" from resource? Is it a correct value? If it is, what's the problem?
—SA

Alexander Dymshyts 10-Apr-14 11:29am

You are right, I get correct value from resources, but this value is not visiable in created window. I mean if I want to set a title from constructor I can write Title = "Some title" and when I will start a window, it will have title "Some title". Here Title in the constructor has right value, but I don't see it in my loaded window

Sergey Alexandrovich Kryukov 10-Apr-14 11:46am

Than it's possible that you are setting the title too early, so it is set later again.
Here is what you can try, as the experiment: override the method Window.OnContentRendered and do this assignment in this method (http://msdn.microsoft.com/en-us/library/system.windows.window.oncontentrendered.aspx);

Please tell me if it works out. Again, look at the assignment under the debugger.

—SA

Alexander Dymshyts 11-Apr-14 4:02am

You were right. Post this as an answer to accept it and thank you for help.

Sergey Alexandrovich Kryukov 11-Apr-14 9:59am

Done.
You are very welcome. Good luck, call again.
—SA

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Sergey Alexandrovich Kryukov · Accepted Answer · 2014-04-11T03:58:00

Thank you for testing your code the way shown in my comment.

So, it confirmed that the value for the Window.Title was calculated correctly, but is later overwritten. You can make sure that the new value is assigned and rendered, if you do it on the later step of the window life cycle, when its context is already rendered, right before is is first shown. One of the ways to achieve that is to override the virtual method System.Windows.Window.OnContentRendered and move your assignment there. Please see:
http://msdn.microsoft.com/en-us/library/system.windows.window.oncontentrendered.aspx[^].

There are many situations where you need to do "last touches" to a window; and this way is probably the easiest.

—SA