WPF Change thickness left border textbox

Question

I've to change the thickness of a textbox in WPF, but i don't know how to change only one border.

How can i do it?

thi is my code

<TextBox HorizontalAlignment="Left" Height="23" Margin="215,144,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>

Answer 1

To set for example the thickness of the left border only, you could write either this:

<TextBox BorderThickness="10,0,0,0" .../>

or this:

<TextBox ...>
    <TextBox.BorderThickness>
        <Thickness Left="10"/>
    </TextBox.BorderThickness>
</TextBox>

Answer 2

<TextBox HorizontalAlignment="Left" Height="23" BorderBrush="Red" Margin="215,144,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120" BorderThickness="5"/>

涂上边框笔刷，并将BorderThickness =“ 5,0,0,0”设置为所需的厚度。