How do I separate the content of a textbox by number in WPF C# without binding?

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I want to show the numbers in TextBox with thousand separator without binding it and without programmatically

Just in XAML

like this example : 123456 => 123,456 or 1000000000 => 1,000,000,000

What I have tried:

Also this line in XAML have error

<TextBox x:Name="text_main2" Text="{Binding StringFormat={}{0:N0}}"  VerticalAlignment="Top" Width="303"/>

And I don't no can I do this work in TextBoxMask :

<xctk:MaskedTextBox Mask="0000"  PromptChar=" " x:Name="txtname"  HorizontalContentAlignment="Right" HorizontalAlignment="Left" Height="22" Margin="512,296,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="152"/>

Please help

Posted 22-Jul-21 22:13pm

TOCOMA 2021

Updated 31-Jul-21 8:29am

Chris Copeland

v3

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Chris Copeland 23-Jul-21 4:19am

I don't understand this question, what do you mean without binding it and without programmatically? How are you planning on actually putting the number into the textbox? In WPF the standard model would be to use binding, but in your first example you've not provided a path to bind to.

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#realJSOP · Answer 1 · 2021-07-22T22:41:00

Solution 1

If you're not going to bind to a property (which IMHO is stupid and goes against everything WPF stands for), you have to format the values yourself in code-behind.

Posted 22-Jul-21 22:41pm

#realJSOP

Adérito Silva · Answer 2 · 2021-07-31T08:29:00

You can use ContentStringFormat property, or you can use a binding. You can also even use a content template... I know, you don't want bindings, but even if you don't want to bind to some property's value, you can still use a binding just for formatting.

Your current binding lacks a property path, which would be valid if you were inside a data template or if you had set a suitable DataContext, but a binding always assumes you are getting a value from somewhere (from another control, from a resource, from a property, from a static member, etc.).

To give you a proper answer, we need to know more about what you need to do. For example, where do you want to get the number from?