A TwoWay or OneWayToSource binding cannot work on the read-only property

wpf binding
Tony Trembath-Drake picture Tony Trembath-Drake · Feb 26, 2009 · Viewed 53.4k times · Source

I've a read only property I need to display in a textbox, and getting this error at runtime. I've set IsEnabled="False", IsReadOnly="True" - no luck. Other searches say the readonly should fix it, but not for me. I've got an ugly workaround by adding a dummy setter...

Answer

Razzie picture Razzie · Feb 26, 2009

It's hard to guess without code, but you should be able to set the BindingMode to OneWay.

<TextBox Text="{Binding Path=MyProperty, Mode=OneWay}" />

or from code:

Binding binding = new Binding();
binding.Mode = BindingMode.OneWay;

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