WPF / c# - Binding from UI to static property

Question

4.50/5 (2 votes)

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I am having a hard time binding the text I enter in a TextBox to a static property in a non-static class. Here are the specifics:

UI is in the main window, the textbox is names tb.
The class (named c) is non-static and public.
the property (named p) is static - as in public static string p { get; set;}
the required direction is from the UI to the property; The other direction is not required, but doesn't make a difference.
I have tried lots of examples of syntax, but cannot manage to do so.

Please help!

Posted 30-Jul-15 0:06am

zazkapulsk

Updated 30-Jul-15 0:20am

Maciej Los

v2

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4 solutions

Solution 2

Not sure i understand you well (because of this: "the required direction is from the UI to the property; The other direction is not required, but doesn't make a difference"), but...

I'd suggest to read this: Static Classes and Static Class Members (C# Programming Guide)[^] - Static Members part:

MSDN wrote:
A non-static class can contain static methods, fields, properties, or events. The static member is callable on a class even when no instance of the class has been created. The static member is always accessed by the class name, not the instance name.

This might be helpful too: Static Constructors (C# Programming Guide)[^]

So, you have to re-think your class definition.

Posted 30-Jul-15 0:32am

Maciej Los

Comments

Sergey Alexandrovich Kryukov 30-Jul-15 10:23am

Exactly. A 5.
—SA

Maciej Los 2-Aug-15 15:33pm

Thank you Sergey!

Solution 1

You can't bind to a static like that. There's no way for the binding to get notified of updates since there's no DependencyObject (or object instance that implement INotifyPropertyChanged) involved.

Posted 30-Jul-15 0:24am

webmaster442

Solution 4

The following code will work:

C#

private static string _p;


 public static string P
 {
   get { return _p; }
   set
   {
     _p = value;
   }
 }

Posted 30-Jul-15 1:17am

stibee

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stibee · Accepted Answer · 2015-07-30T00:33:00

Solution 3

Did you tried x:static?
See http://stackoverflow.com/questions/32395/accessing-static-fields-in-xaml[^]

Posted 30-Jul-15 0:33am

stibee

Comments

Maciej Los 30-Jul-15 6:49am

5ed!
You hit 10!

Sergey Alexandrovich Kryukov 30-Jul-15 10:24am

5ed.
—SA

stibee 30-Jul-15 10:26am

What means 5ed?

Sergey Alexandrovich Kryukov 30-Jul-15 10:41am

Members vote by clicking on the stars above, from 1 (very bad), to 5 (excellent).
—SA