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; } 
              set 
              { 
                  if (this.currColor != value) 
                  { 
                      this.currColor = value; 
                      this.OnPropertyChanged("CustomColor"); 
                  } 
              } 
          } 
   
          public string ToolTipString { get; set; } 
      } 
  

      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

      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.

<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: