I have a textbox databound to a nullable int through code. If I erase the data from the textbox it gives me a validation error (red border around it).
Here is my binding code:
ZipBinding = new Binding("Zip");
ZipBinding.Source = Address;
zipTextBox.SetBinding(TextBox.TextProperty, ZipBinding);
public Int32? Zip { get { ... } set { ... } }
It's clearly marked as a Nullable so why does WPF wanna give me a validation issue when I clear the textbox?
Set value to null in WPF binding
please take a look at the following line
This Price property from above is a
Decimal?
(Nullable decimal).I want that if user deletes the content of the textbox (i.e. enters empty string, it should automatcally update source with null (Nothing in VB).
Any ideas on how I can do it 'Xamly'?
回答1
I am using .NET 3.5 SP1 so it's very simple:
Which stands for (thanks Gregor for your comment):
sys
is the imported xml namespace forSystem
inmscorlib
:Hope that helped.