added support to control DialogWindow propertes from style

[brianlagunas]

Description of Change

You can now control the properties of the DialogWindow by using a style via an attaxched property on the Dialog UserControl

    <prism:DialogService.DialogWindowStyle>
        <Style TargetType="Window">
            <Setter Property="ResizeMode" Value="NoResize"/>
            <Setter Property="ShowInTaskbar" Value="False"/>
            <Setter Property="SizeToContent" Value="WidthAndHeight"/>
        </Style>
    </prism:DialogService.DialogWindowStyle>

NOTE I'm not real happy with the location of the attached property and it may be moved to a different class.

API Changes

List all API changes here (or just put None), example:

Added:

• DialogService.DialogWindowStyle attached property
• Added IDialogWindow.Style property

PR Checklist

• Rebased on top of master at time of PR
• Changes adhere to coding standard

[HartlD]

How can I change the window style dynamically via Trigger??
Like:

`<Style TargetType="UserControl">

        <Setter Property="prism:Dialog.WindowStyle" Value="{DynamicResource  DefaultDialogStyleTheme}"></Setter>
        <Style.Triggers>

            <DataTrigger
                Binding="{Binding SecondOne, UpdateSourceTrigger=PropertyChanged}"
                Value="true">                    
                <Setter Property="prism:Dialog.WindowStyle" Value="{DynamicResource DialogStyleTheme}"></Setter>
            </DataTrigger>
        </Style.Triggers>
    </Style>`

[dansiegel]

@HartlD questions should be asked on StackOverflow

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.