C# WPF ViewModel change background color for textbox

Question

 <TextBox   Name="txtSlot" Text="{Binding Path=GebindeSlot, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"  Height="33" Margin="22,376,183,232" Grid.Column="3"        />

Hello,
How can I change the background color from the code?
If GebindeSlot.length == 0
White
else
Green.

Thanks!

Answer 1

You can set your TextBox like below: