转义字符有关问题

转义字符问题.
dim str as string="<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0" x:Name="LayoutRootBackground">
  <LinearGradientBrush.RelativeTransform>
  <CompositeTransform CenterY="0.5" CenterX="0.5" Rotation="-128"/>
  </LinearGradientBrush.RelativeTransform>
  <GradientStop Color="#FFEFF6FE" Offset="0"/>
  <GradientStop Color="#FFC5DDFF" Offset="1"/>
  </LinearGradientBrush>"

就这么一段用字符串来接受..怎么转义 在C#中

string str=@"<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0" x:Name="LayoutRootBackground">
  <LinearGradientBrush.RelativeTransform>
  <CompositeTransform CenterY="0.5" CenterX="0.5" Rotation="-128"/>
  </LinearGradientBrush.RelativeTransform>
  <GradientStop Color="#FFEFF6FE" Offset="0"/>
  <GradientStop Color="#FFC5DDFF" Offset="1"/>
  </LinearGradientBrush>"
就可以了 在VB 中怎么简单的实现

[解决办法]
string str=@"<LinearGradientBrush EndPoint=""0.5,1"" StartPoint=""0.5,0"" x:Name=""LayoutRootBackground"">
 两个双引号
[解决办法]