TabItem Silverlight

Question

我有一个在XAML中具有此TabItem的TabControl。

<controls:TabItem x:Name="UserNameOn1" Background="LightGray" Height="25"  Visibility="Visible"  IsSelected="False" MouseLeftButtonDown="teste110_MouseLeftButtonDown">
      <controls:TabItem.Header>
           <StackPanel x:Name="TabitemPanel" Orientation="Horizontal" VerticalAlignment="Center">
                   <Image x:Name="UserImage" Source="/Tese;component/Images/user_act.png" Width="30" Height="15" Margin="0,0,0,0" VerticalAlignment="Center" ImageFailed="UserImage_ImageFailed"/>
                   <TextBlock Name="Userdisplay"  Text="UserName" Margin="30,0,0,0" VerticalAlignment="Center"/>
           </StackPanel>
      </controls:TabItem.Header>

并在C＃中，我想将Userdisplay Text更改为conta.Username_v，如下所示，问题是通过执行此操作，我在TabItem中的图像消失了，如何仅对TextBlock进行更改并维护图像

UserNameOn1.Header = conta.Username_v; 

Answer 1

尝试这个

at event or form load whenever you want.

Userdisplay.text = conta.Username_v;

这将仅更改文本框的文本，而不会影响其他