Is it possible to bind Text and StringFormat too?
<TextBlock Text="{Binding Path=Price, StringFormat={Binding Path=DecimalPoints}}" />
DecimalPoints is constantly changing from F0 to F15. Unfortunatelly the code above doesn't compile.
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1No, but you could probably do this using a converterjimSampica– jimSampica2013-08-29 16:02:22 +00:00Commented Aug 29, 2013 at 16:02
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3 Answers
I think your best bet is definitely a converter. Then your binding would look like this:
<TextBlock.Text>
<MultiBinding Converter="{StaticResource StringFormatConverter }">
<Binding Path="Price"/>
<Binding Path="DecimalPoints"/>
</MultiBinding>
</TextBlock.Text>
Then a quick converter (you can certainly make it nicer, but this is the general idea).
public class StringFormatConverter : IMultiValueConverter
{
#region IMultiValueConverter Members
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
double number = (double)values[0];
string format = "f" + ((int)values[1]).ToString();
return number.ToString(format);
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
#endregion
}
3 Comments
as74
Works perfect, Thanks. What you mean "make it nicer"?
Liz
Well, for instance I am assuming that the values being passed are a double and an int. Also I am assuming that there are two values passed (instead of say - only one). You could make the method a little more foolproof by checking the arguments first.
Roxy'Pro
@Liz, could you check for my question please: stackoverflow.com/questions/40134370/…
As mentioned @Sheridan, in this case, Binding will not work. But you can create a class with static strings, and refer to them in XAML. The syntax is:
<x:Static Member="prefix : typeName . staticMemberName" .../>
Below is an example:
XAML
xmlns:local="clr-namespace:YourNameSpace"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
<Grid>
<TextBlock Text="{Binding Source={x:Static sys:DateTime.Now}, StringFormat={x:Static Member=local:StringFormats.DateFormat}}"
HorizontalAlignment="Right" />
<TextBlock Text="{Binding Source={x:Static sys:DateTime.Now}, StringFormat={x:Static Member=local:StringFormats.Time}}" />
</Grid>
Code behind
public class StringFormats
{
public static string DateFormat = "Date: {0:dddd}";
public static string Time = "Time: {0:HH:mm}";
}
For more information, please see:
answered Aug 29, 2013 at 16:17
Anatoliy Nikolaev
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Comments
No you can't... the reason is because you can only bind to a DependencyProperty of a DependencyObject and the StringFormat property of the Binding class is just a string.
