please help me to set the value of controls in the DataTemplate of report header

<Page.Resources>

    <!-- DataTemplate for page header-->

    <DataTemplate x:Key="PagePresenterHeaderTemplate">

      <Grid>

        <Image Source="../../images\misc\HeaderPic.png"/>

        <Label

          Height="50"

          Content="{Binding}"

          Padding="0"

          HorizontalContentAlignment="Center"

          VerticalContentAlignment="Center"/>

      </Grid>

    </DataTemplate>

<Page.Resources>

i want to set the value of the image and the label in code

thank you