Handling Content property in WPF

I'm currently facing huge problem i.e I'm showing Image and some text in a image the problem is when I change content property of button from code, my image disappears and only assigned text is shown, I wan to retain image and just wann change the text, Any suggetions how to handle it

<Button x:Name="btnPrescan" Margin="8" Grid.Column="2" Click="btnPrescan_Click">
    <StackPanel Orientation="Horizontal">
         <Image Source="Icons\Scan_Start_Icon.png" Height="14" Width="23"/>
         <TextBlock x:Name="tbButtonText"  Text="    Prescan"/>
    </StackPanel>
</Button>

and button looks something like this

Thanks

From stackoverflow

• You should do this way,

  ((TextBlock)btnPrescan.GetTemplatedChild("tbButtonText")).Text = "Your Text"
  

• Bind the text to a backing property on your UserControl:

  <Button x:Name="btnPrescan" Margin="8" Grid.Column="2" Click="btnPrescan_Click">
      <StackPanel Orientation="Horizontal">
           <Image Source="Icons\Scan_Start_Icon.png" Height="14" Width="23"/>
           <!-- assumes DataContext is set appropriately -->
           <TextBlock Text="{Binding ButtonText}"/>
      </StackPanel>
  </Button>
  

  Then just change the backing property:

  this.ButtonText = "New button text";
  

  HTH, Kent