Unable to set Binding to a Run that resides in a TextBlock.
    <Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        DataContext="This is my text">
      <TextBlock>
        <Run Text="{Binding}"/>
      </TextBlock>
    </Window>

Throws `InvalidOperationException`: "Two-way binding requires Path or XPath."

Specifying `Mode=OneWay`, leads to a weird compiler error:

`The tag 'Binding,' does not exist in XML namespace 'http://schemas.microsoft.com/winfx/2006/xaml/presentation'.`

Is there any xamly way to fix this?
Unable to set Binding to a Run that resides in a TextBlock.
===

    <Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        DataContext="This is my text">
      <TextBlock>
        <Run Text="{Binding}"/>
      </TextBlock>
    </Window>

Throws `InvalidOperationException`: "Two-way binding requires Path or XPath."

Specifying `Mode=OneWay`, leads to a weird compiler error:

`The tag 'Binding,' does not exist in XML namespace 'http://schemas.microsoft.com/winfx/2006/xaml/presentation'.`

Is there any xamly way to fix this?