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Customize the PaletteViewItem's ToolTip

This article will show you a way to customize the ToolTip of the PaletteView items.

Keep in mind that this approach is available in data binding scenarios, only.

For the purpose of this article we will use:

  • a custom class ColorModel that exposes two properties of type Color and string

    C#

    public class ColorModel : ViewModelBase
    {
        private Color currColor;
        public Color CustomColor
        {
            get { return this.currColor; }
            set
            {
                if (this.currColor != value)
                {
                    this.currColor = value;
                    this.OnPropertyChanged("CustomColor");
                }
            }
        }
    
        public string ToolTipString { get; set; }
    }
    

    VB.NET

    Public Class ColorModel
        Inherits ViewModelBase
        Private currColor As Color
        Public Property CustomColor() As Color
            Get
                Return Me.currColor
            End Get
            Set(value As Color)
                If Me.currColor <> value Then
                    Me.currColor = value
                    Me.OnPropertyChanged("CustomColor")
                End If
            End Set
        End Property
    
        Public Property ToolTipString() As String
            Get
                Return m_ToolTipString
            End Get
            Set(value As String)
                m_ToolTipString = Value
            End Set
        End Property
        Private m_ToolTipString As String
    End Class
    
  • three different collections of ColorModel which will be used for the HeaderPalette, MainPalette and StandardPalette

  • a ViewModel that wraps these collections and creates some sample data

    C#

    public class MainViewModel : ViewModelBase
    {
        private ObservableCollection<ColorModel> mainPaletteColors;
        private ObservableCollection<ColorModel> headerPaletteColors;
        private ObservableCollection<ColorModel> standardPaletteColors;
    }
    

    VB.NET

    Public Class MainViewModel
        Inherits ViewModelBase
        Private m_mainPaletteColors As ObservableCollection(Of ColorModel)
        Private m_headerPaletteColors As ObservableCollection(Of ColorModel)
        Private m_standardPaletteColors As ObservableCollection(Of ColorModel)
    

Then you have to set the MainViewModel as DataContext of the RadColorPicker control. In order to set the customized string as a tool tip you can use the PaletteItemsTemplate property to set a customized DataTemplate. In this template you can use the ToolTipService and bind the ToolTip property to your customized string.

XAML

<Grid>
<Grid.Resources>
    <DataTemplate x:Key="PaletteTemplate">
        <Rectangle ToolTipService.ToolTip="{Binding ToolTipString}">
            <Rectangle.Fill>
                <SolidColorBrush Color="{Binding CustomColor}" />
            </Rectangle.Fill>
        </Rectangle>
    </DataTemplate>
</Grid.Resources>
<telerik:RadColorPicker HeaderPaletteItemsSource="{Binding HeaderPaletteColors}"
                        ColorPropertyPath="CustomColor"
                        MainPaletteItemsSource="{Binding MainPaletteColors}"
                        PaletteItemsTemplate="{StaticResource PaletteTemplate}"
                        StandardPaletteItemsSource="{Binding StandartPaletteColors}" />
</Grid>

The result will be similar to the picture below:

Rad Color Picker How To Custom Tool Tip