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

        public class ColorModel : ViewModelBase
            private Color currColor;
            public Color CustomColor
                get { return this.currColor; }
                    if (this.currColor != value)
                        this.currColor = value;
            public string ToolTipString { get; set; }
        Public Class ColorModel
            Inherits ViewModelBase
            Private currColor As Color
            Public Property CustomColor() As Color
                    Return Me.currColor
                End Get
                Set(value As Color)
                    If Me.currColor <> value Then
                        Me.currColor = value
                    End If
                End Set
            End Property
            Public Property ToolTipString() As String
                    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

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

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

The result will be similar to the picture below:

Rad Color Picker How To Custom Tool Tip

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