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I have tried the following XAML code. The value entered in the TextBox will be displayed in the TextBlock, but will no conversion has taken place. What am I doing wrong??

<StackPanel Orientation="Horizontal">
    <TextBox Name="waarde" Width="100" />
    <TextBlock Text="{Binding Path=Text, ElementName=waarde, 
                     StringFormat= {}{0:C1}}"/>
</StackPanel>


What I have tried:

I have used different formats for the StringFormat, but the result is always the same. in different
Posted
Updated 10-Feb-22 22:33pm
v4

1 solution

You can't apply a format string to a string input. You need to convert the text to a numeric type before formatting it.

If you're using MVVM, you can bind the TextBox text to a decimal? property on the view-model. Bind the TextBlock text to the same property, and the string format will just work.

Otherwise, you'll need to write a custom IValueConverter to convert the entered string to a decimal before formatting it.
 
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Comments
Maciej Los 14-Feb-22 15:04pm    
5ed!
Antoon Crama 14-Feb-22 20:16pm    
Thanks. This works.

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