WPF: is it possible to send to convert another object? [duplicate] - wpf

Question

So i have simple Gauge class with static int property that implement Propertychanged:
TotalPacketsSent
This property is raising all the time and i want to wrote simple converter and send this converter this property value and return some value base on this property:
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
int val = (int)value;
double percentage = ((double)MyClass.TotalPacketsSent / MyClass.TotalPacketsInList) * 100;
return percentage;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
Under Window.Resources i have this:
<Convertors:GaugeValueConverter x:Key="GaugeValueConverter"/>
And this is my Gause:
<Controllers:Gauge x:Name="gauge"
Value="{Binding Path=(my:MyClass.TotalPacketsSent), Converter={StaticResource GaugeValueConverter}}"
Minimum="0"
Maximum="100"/>
So my issue is that my converter not working at all, i mean that i cannot see that this even executed.
Any ideas why ?
Edit:
This property is changing all the time and i have Label i am using this way to show its value:
Content="{Binding Path=(my:MyClass.TotalPacketsSent)}"
And this works fine.

Answer 1

You're casting the value argument as an int and then not using it.
I imagine what you're looking for is something like (deriving from IMultiValueConverter rather than IValueConverter):
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
double totalPacketsSent = (double)values[0];
double totalPacketsInList = (double)values[1];
// further validation for handling divide by zero, etc. may need to go here
return totalPacketsSent / totalPacketsInList * 100
}
And in the XAML:
<Controllers:Gauge x:Name="gauge" Minimum="0" Maximum="100">
<Controllers:Gauge.Value>
<MultiBinding Converter="{StaticResource GaugeValueConverter}">
<Binding Path="(my:MyClass.TotalPacketsSent)" />
<Binding Path="(my:MyClass.TotalPacketsInList)" />
</MultiBinding>
</Controllers:Gauge.Value>
</Controllers:Gauge>