Binding two colour on a wpf template

Question

I created a Template in order to set a Theme for my Application. In this Template, i created a Gradient style (composed of two colors) :

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <LinearGradientBrush x:Key="DegradeCouleurTheme" StartPoint="0,0" EndPoint="0,1">
       <!--<GradientStop Offset="0" Color="#00b6e7"/>
       <GradientStop Offset="1" Color="#0086d6"/>-->
       <GradientStop Offset="0" Color="{Binding Path=(m_ThemeColorGradientBegin)}"/>
       <GradientStop Offset="1" Color="{Binding Path=(m_ThemeColorGradientEnd)}"/>
   </LinearGradientBrush>
</ResourceDictionary>

I would like to be able to change the two colors, so i have created a Window in order to set the colors. These colors are stored in a class "CParametres.cs" .The two colors are nextly stored in the DataBase.

Here is my CParameters Class : (I cleaned the class for a better view )

namespace Phoenix_CRM
{
    public class CParametres : INotifyPropertyChanged
    {
        private Color m_ThemeColorGradientBegin;
        public Color ThemeColorGradientBegin
        {
            get { return m_ThemeColorGradientBegin; }
            set
            {
                m_ThemeColorGradientBegin = value;
                FirePropertyChangedEvent("ThemeColorGradientBegin");
            }
        }

        private Color m_ThemeColorGradientEnd;
        public Color ThemeColorGradientEnd
        {
            get { return m_ThemeColorGradientEnd; }
            set
            {
                m_ThemeColorGradientEnd = value;
                FirePropertyChangedEvent("ThemeColorGradientEnd");
            }
        }


        public CParametres(r)
        {
           ......
        }

        public void LoadParams()
        {
            if (ReadParamFromDB() == true)
            {
                setThemeGradient(m_ThemeColorGradientBegin, m_ThemeColorGradientEnd);
            }
        }    

        public void setThemeGradient(Color ColorBegin, Color ColorEnd)
        {
            ThemeColorGradientBegin = ColorBegin;
            ThemeColorGradientEnd = ColorEnd;
        }

        public event PropertyChangedEventHandler PropertyChanged;

        private void FirePropertyChangedEvent(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }
}

In my App.xaml.cs, i created a object "CParametres" and i load the colors from the database in this object :

In my App.xamls.cs

obj_Parametres = new CParametres()
obj_Parametres .LoadParams()

After this LoadParams(), the two colors are stored in the :

m_ThemeColorGradientBegin and m_ThemeColorGradientEnd objects.

I'm trying to do the binding for this two colors to my Template, and, when i run my application, i don't have any crash, but the colors aren't apply.

I debug my application, and the LoadParams function is OK, my m_ThemeColorGradientBegin and m_ThemeColorGradientEnd objects contains colors.

Anyone could explain my why my binding is not ok ?

Thanks a lot :)

Best regards,

Nixeus

--EDIT-- After MoHaKa tips :

Template :

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:ns="clr-namespace:Phoenix_CRM">


  <LinearGradientBrush x:Key="DegradeCouleurTheme" StartPoint="0,0" EndPoint="0,1">
      <!--<GradientStop Offset="0" Color="#00b6e7"/>
      <GradientStop Offset="1" Color="#0086d6"/>-->
      <GradientStop Offset="0" Color="{x:Static ns:CParametres.ThemeColorGradientBegin}"/>
      <GradientStop Offset="1" Color="{x:Static ns:CParametres.ThemeColorGradientBegin}"/>
  </LinearGradientBrush>
</ResourceDictionary>

My CParametres.CS :

    private static Color m_ThemeColorGradientBegin;
    public static Color ThemeColorGradientBegin
    {
        get { return m_ThemeColorGradientBegin; }
        set
        {
            m_ThemeColorGradientBegin = value;
            FirePropertyChangedEvent("ThemeColorGradientBegin");
        }
    }

With setting static to ThemeColorGradientBegin and m_ThemeColorGradientBegin i have a compilator error on the FirePropertyChangedEvent() : Error MC3011 : Unable to find statical member ThemeColorGradientBegin on CParametres type.

Have you an idea please ?

Thanks :)

Answer 1

THIS code will help you:

define this statement in your window tag.

xmlns:ns="clr-namespace:Phoenix_CRM"

now using binding get the colors:

<LinearGradientBrush x:Key="DegradeCouleurTheme" StartPoint="0,0" EndPoint="0,1">
    <!--<GradientStop Offset="0" Color="#00b6e7"/>
    <GradientStop Offset="1" Color="#0086d6"/>-->
    <GradientStop Offset="0" Color="{x:Static ns:CParametres.ThemeColorGradientBegin}"/>
    <GradientStop Offset="1" Color="{x:Static ns:CParametres.ThemeColorGradientEnd}"/>
</LinearGradientBrush>

don't forgot to change your color properties to static