Grid in WPF Page

Grid in WPF Page

There is a difference behavior of Grid resided in Window and Page?

There is a difference behavior of Grid resided in Window and Page?

Xaml code for window

<Grid ShowGridLines="True">
        <Grid.RowDefinitions>
            <RowDefinition Height="30"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="30"/>
        </Grid.RowDefinitions>


    &lt;Grid Grid.Row="1" ShowGridLines="True"&gt;
        &lt;Grid.RowDefinitions&gt;
            &lt;RowDefinition Height="*"/&gt;
            &lt;RowDefinition Height="*"/&gt;
            &lt;RowDefinition Height="*"/&gt;
        &lt;/Grid.RowDefinitions&gt;
        &lt;Grid.ColumnDefinitions&gt;
            &lt;ColumnDefinition Width="*"/&gt;
            &lt;ColumnDefinition Width="*"/&gt;
        &lt;/Grid.ColumnDefinitions&gt;
        &lt;Button Grid.Column="1"&gt;

        &lt;/Button&gt;
        &lt;Button Grid.Column="0"&gt;

        &lt;/Button&gt;
        &lt;Label Grid.Row="1" Width="50"&gt;

        &lt;/Label&gt;
        &lt;DatePicker Grid.Column="0" Grid.Row="2"&gt;

        &lt;/DatePicker&gt;
    &lt;/Grid&gt;
&lt;/Grid&gt;

Xaml code for Page

 <Grid ShowGridLines="True">
        <Grid.RowDefinitions>
            <RowDefinition Height="30"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="30"/>
        </Grid.RowDefinitions>

    &lt;Grid Grid.Row="1" ShowGridLines="True"&gt;
        &lt;Grid.RowDefinitions&gt;
            &lt;RowDefinition Height="*"/&gt;
            &lt;RowDefinition Height="*"/&gt;
            &lt;RowDefinition Height="*"/&gt;
        &lt;/Grid.RowDefinitions&gt;
        &lt;Grid.ColumnDefinitions&gt;
            &lt;ColumnDefinition Width="*"/&gt;
            &lt;ColumnDefinition Width="*"/&gt;
        &lt;/Grid.ColumnDefinitions&gt;
        &lt;Button Grid.Column="1"&gt;

        &lt;/Button&gt;
        &lt;Button Grid.Column="0"&gt;

        &lt;/Button&gt;
        &lt;Label Grid.Row="1" Width="50"&gt;

        &lt;/Label&gt;
        &lt;DatePicker Grid.Column="0" Grid.Row="2"&gt;

        &lt;/DatePicker&gt;
    &lt;/Grid&gt;
&lt;/Grid&gt;

Both the same code, but I am unable to position controls inside the grid column and row in wpf Page. In wpf window it work as intended. What am i doing wrong?

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