How to make the Okbutton in the center,it is in right in default state!

[PEIYANG]

How to make the Okbutton in the center,it is in right in default state!
The picture is here:https://www.yousendit.com/download/TEhYNnFFdVVENlRSc01UQw

This is my code,how to change it to make the button in the center? 
DialogParameters pars = new DialogParameters();
                pars.Header = "警告";
                pars.OkButtonContent = "  确定 ";
                pars.Content = "请选择";
                RadWindow.Alert(pars);

[Yana]

Hello Peiyang,

You should modify the template of RadAlert in order to make the button appear in the center. The easiest way is to use Implicit Styles as explained here. You just need to find "RadAlertStyle" and make the modifications in it. Or you can create a new Style, copied from RadAlertStyle, and then set it to ContentStyle property of the DialogParameters:

<Style x:Key="NewRadAlertStyle" TargetType="telerik:RadAlert">
    <Setter Property="IsTabStop" Value="false" />
    <Setter Property="MinWidth" Value="275" />
    <Setter Property="MaxWidth" Value="500" />
    <Setter Property="SnapsToDevicePixels" Value="True" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="telerik:RadAlert">
                <Grid x:Name="LayoutRoot" FocusManager.FocusedElement="{Binding ElementName=OK}">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="Auto" />
                    </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <Grid.InputBindings>
                        <KeyBinding Key="Escape" Command="{x:Static telerik:WindowCommands.Confirm}" />
                    </Grid.InputBindings>
                    <ContentPresenter x:Name="Icon" VerticalAlignment="Top" Margin="20 20 6 8" ContentTemplate="{StaticResource AlertIconTemplate}" />
                    <ScrollViewer Grid.Row="0" Grid.Column="1" VerticalAlignment="Center" IsTabStop="False" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" Margin="0 0 0 8">
                        <ContentPresenter x:Name="AlertText" Margin="8 8 8 0" />
                    </ScrollViewer>
                    <Border x:Name="HorizontalRule" Grid.Row="1" Grid.ColumnSpan="2" BorderThickness="0 0 0 1" Height="2"
                        Background="{StaticResource BorderLineOuterColor}" BorderBrush="{StaticResource BorderLineInnerColor}"
                        VerticalAlignment="Top" />
                    <telerik:RadButton x:Name="OK" Command="{x:Static telerik:WindowCommands.Confirm}"
                                    local:RadWindow.ResponseButton="Accept" Grid.Row="2" IsTabStop="True"
                                    TabIndex="0" Grid.ColumnSpan="2"
                                    MinWidth="70" HorizontalAlignment="Center"
                                    telerik:LocalizationManager.ResourceKey="Ok"  />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

and then:

DialogParameters pars = new DialogParameters();
pars.Header = "警告";
pars.OkButtonContent = "  确定 ";
pars.Content = "请选择";
pars.ContentStyle = Application.Current.Resources["NewRadAlertStyle"] as Style;
RadWindow.Alert(pars);

The only difference from the default template is the HorizontalAlignment="Center" of the OK button.

Greetings,
Yana
the Telerik team

[PEIYANG]

Can you give me a example?
 local:RadWindow.ResponseButton="Accept" Grid.Row="2" IsTabStop="True" ?  I run it says can't find "local" and other wrongs.

[Yana]

Hi Peiyang,

Please find attached an example showing the exact approach.  Note that you should use NoXaml assemblies when using implicit styles.

Greetings,
Yana
the Telerik team

[PEIYANG]

I have do according what you say, but it still wrong.

[PEIYANG]

Here is my project ,I have do according to what you say,but it still fail.Can you tell what is wrong and how to solve it? Thank you!

This is my all project:https://www.yousendit.com/download/TEhWSlJ5VnNtUUUwTWNUQw