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: