Binding Gradient color in wpf

Question

I have to bind the gradient color property. In this I am using a converter. Here is the xaml code for binding

<GradientStop Color="{Binding Namevalue, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource nametocolorconverter}}"/>

the code for nametocolorconverter

class nametocolorconverter: IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
       Brush brw = new Brush();
        if(value == "Blue") brw = Colors.Blue;
        elseif(value=="Green") brw = Colors.Green;
        else brw=Colors.Red;
   return brw;

    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return null;
    }

The above code is not working. I am not getting the desired color.

Answer 1

Your code does not even compile.

In the Convert method you declare a local variable brw of type Brush and try to create a new Brush instance. Besides that this won't work because Brush is an abstract class, you should instead have a variable of type Color :

Color color;
if (value == "Blue")
{
    color = Colors.Blue;
}
else if (value == "Green")
{
    color = Colors.Green;
}
else
{
    color = Colors.Red;
}

You may also use a switch statement instead of an if-else chain:

switch ((string)value)
{
    case "Blue":
        color = Colors.Blue;
        break;
    case "Green":
        color = Colors.Green;
        break;
    default:
        color = Colors.Red;
        break;
}

Or even simpler, if you use only standard color names:

return (Color)ColorConverter.ConvertFromString((string)value);