WPF中让TextBlock每一个字符显示不同的颜色

XAML代码:

<TextBlock x:Name="tb">

              <Run Foreground="Red">R</Run>

              <Run Foreground="Green">G</Run>

              <Run Foreground="Blue">B</Run>

              <Run Text="Gradient">

                 <Run.Foreground>

                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

                       <GradientStop Color="#FF000000" Offset="0"/>

                       <GradientStop Color="#FFFFFFFF" Offset="1"/>

                   </LinearGradientBrush>

              </Run.Foreground>

         </Run>

</TextBlock>

在后台的逻辑代码中应访问TextBlock的Inlines集合来得到它所包含的字串..如果你用Text属性是取不到值的..

CS代码:

string str1 = this.tb.Text;

string str2 = "";

foreach (Run r in tb.Inlines)

{

    str2 += r.Text;

}

MessageBox.Show("str1:["+str1+"]         str2:["+str2+"]");

运行结果:

TextBlock的显示效果:

显示TextBlock内的字符串: