Controls / RadBreadcrumb / Features

Data Binding

The RadBreacrumb provides extensive data binding support. You can display flat data collections as well as hierarchical data. The following properties are exposed to help you implement data binding scenarios with the control:

  • IconPath - Gets or sets a path to a value on the source object to serve as the BreadcrumbItem.Image.

  • TextModePath - Gets or sets a path to a value on the source object to serve as the string representation of the BreadcrumbItem in text mode

Bind the Breadcrumb to a flat collection of business objects

The following example will show you how to bind a Breadcrumb control to a flat collection of business objects. The final result should look like the snapshot below:

Silverlight RadBreadcrumb Data Binding Example

  • First, you need to include the following assemblies in your XAML declaration:

    • Telerik.Windows.Controls
    • Telerik.Windows.Controls.Navigation

  • Create a new class named ExplorerItem :

    Example 1: Creating a model for the breadcrumb items

        public class ExplorerItem 
    { 
         public string Header { get; set; } 
         public string PreviewHeader { get; set; } 
         public string Path { get; set; } 
         public ImageSource IconPath { get; set;}  
    } 

        Public Class ExplorerItem 
            Public Property Header() As String 
                    Get 
                            Return _Header 
                    End Get 
                    Set 
                            _Header = Value 
                    End Set 
            End Property 
            Private _Header As String 
            Public Property PreviewHeader() As String 
                    Get 
                            Return _PreviewHeader 
                    End Get 
                    Set 
                            _PreviewHeader = Value 
                    End Set 
            End Property 
            Private _PreviewHeader As String 
            Public Property Path() As String 
                    Get 
                            Return _Path 
                    End Get 
                    Set 
                            _Path = Value 
                    End Set 
            End Property 
            Private _Path As String 
            Public Property IconPath() As ImageSource 
                    Get 
                             Return _IconPath 
                    End Get 
                    Set 
                             _IconPath = Value 
                    End Set 
            End Property 
            Private _IconPath As ImageSource 
    End Class

  • Create a new class MainViewModel - it will contain the collection of ExplorerItems that we will use as ItemsSource for the RadBreadcrumb as well as a string property - Header

    Example 2: Creating a main view model

        public class MainViewModel 
    { 
     public ObservableCollection<ExplorerItem> Items { get; set; } 
     public string Header { get; set; } 
     public MainViewModel() 
     { 
      ImageSourceConverter isc = new ImageSourceConverter(); 
      this.Header = "MyComputer"; 
      this.Items = new ObservableCollection<ExplorerItem>(); 
      ExplorerItem personalInfo = new ExplorerItem() 
      { 
       Header = "Personal Folders", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/1PersonalFolders.png"), 
       Path = "PersonalFolders" 
      }; 
      this.Items.Add(personalInfo); 
      ExplorerItem programFiles = new ExplorerItem() 
      { 
       Header = "Program Files", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
       Path = "ProgramFiles" 
      }; 
      this.Items.Add(programFiles); 
      ExplorerItem programFiles86 = new ExplorerItem() 
      { 
       Header = "Program Files(86)", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
       Path = "ProgramFiles(86)" 
      }; 
      this.Items.Add(programFiles86); 
      ExplorerItem downloads = new ExplorerItem() 
      { 
       Header = "Downloads", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
       Path = "Downloads" 
      }; 
      this.Items.Add(downloads); 
      ExplorerItem localHard = new ExplorerItem() 
      { 
       Header = "Local Disk (C:)", 
       Path = "LocalDisk(C:)", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/HardDrive16.png") 
      }; 
      this.Items.Add(localHard); 
      ExplorerItem localHard2 = new ExplorerItem() 
      { 
       Header = "Local Disk (D:)", 
       Path = "LocalDisk(D:)", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/HardDrive16.png") 
      }; 
      this.Items.Add(localHard2); 
      ExplorerItem desktop = new ExplorerItem() 
      { 
       Header = "Desktop", 
       Path = "Desktop", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/Desktop.png") 
      }; 
      this.Items.Add(desktop); 
     } 
    } 

        Public Class MainViewModel 
        Public Property Items() As ObservableCollection(Of ExplorerItem) 
            Get 
                Return m_Items 
            End Get 
            Set 
                m_Items = Value 
            End Set 
        End Property 
        Private m_Items As ObservableCollection(Of ExplorerItem) 
        Public Property Header() As String 
            Get 
                Return m_Header 
            End Get 
            Set 
                m_Header = Value 
            End Set 
        End Property 
        Private m_Header As String 
 
        Public Sub New() 
            Dim isc As New ImageSourceConverter() 
            Me.Header = "MyComputer" 
            Me.Items = New ObservableCollection(Of ExplorerItem)() 
 
            Dim personalInfo As New ExplorerItem() With { _ 
                Key .Header = "Personal Folders", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/1PersonalFolders.png"), ImageSource), _ 
                Key .Path = "PersonalFolders" _ 
            } 
            Me.Items.Add(personalInfo) 
 
            Dim programFiles As New ExplorerItem() With { _ 
                Key .Header = "Program Files", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                Key .Path = "ProgramFiles" _ 
            } 
            Me.Items.Add(programFiles) 
 
            Dim programFiles86 As New ExplorerItem() With { _ 
                Key .Header = "Program Files(86)", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                Key .Path = "ProgramFiles(86)" _ 
            } 
            Me.Items.Add(programFiles86) 
 
            Dim downloads As New ExplorerItem() With { _ 
                Key .Header = "Downloads", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                Key .Path = "Downloads" _ 
            } 
            Me.Items.Add(downloads) 
 
            Dim localHard As New ExplorerItem() With { _ 
                Key .Header = "Local Disk (C:)", _ 
                Key .Path = "LocalDisk(C:)", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/HardDrive16.png"), ImageSource) _ 
            } 
            Me.Items.Add(localHard) 
 
            Dim localHard2 As New ExplorerItem() With { _ 
                Key .Header = "Local Disk (D:)", _ 
                Key .Path = "LocalDisk(D:)", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/HardDrive16.png"), ImageSource) _ 
            } 
            Me.Items.Add(localHard2) 
 
            Dim desktop As New ExplorerItem() With { _ 
                Key .Header = "Desktop", _ 
                Key .Path = "Desktop", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/Desktop.png"), ImageSource) _ 
            } 
            Me.Items.Add(desktop) 
        End Sub 
    End Class

  • Use the MainViewModel as data context for a RadBreadcrumb control:

    Example 3: Setting up the DataContex of the breadcrumb

        <FrameworkElement.DataContext> 
        <vm:MainViewModel /> 
    </FrameworkElement.DataContext> 
    <Grid Background="White"> 
        <telerik:RadBreadcrumb VerticalAlignment="Top" ItemsSource="{Binding Items}" Header="{Binding}" TextModePath="Path" ImagePath="IconPath" IsIconVisible="True"> 
            <telerik:RadBreadcrumb.HeaderTemplate> 
                <DataTemplate> 
                    <TextBlock FontWeight="Bold" Foreground="Orange" Text="{Binding Header}" /> 
                </DataTemplate> 
            </telerik:RadBreadcrumb.HeaderTemplate> 
            <telerik:RadBreadcrumb.ItemTemplate> 
                <DataTemplate> 
                    <TextBlock Foreground="Purple" Text="{Binding Header}" /> 
                </DataTemplate> 
            </telerik:RadBreadcrumb.ItemTemplate> 
        </telerik:RadBreadcrumb> 
    </Grid>

Display hierarchical data in the Breadcrumb control

  • Extend the ExplorerItem by adding a collection of ExplorerItems.

    Example 4: Extending the breadcrumb items' model

        public class ExplorerItem 
    { 
     public string Header { get; set; } 
     public string PreviewHeader { get; set; } 
     public string Path { get; set; } 
     public ImageSource IconPath { get; set; } 
     public ObservableCollection<ExplorerItem> Children { get; set; } 
     public ExplorerItem() 
     { 
      this.Children = new ObservableCollection<ExplorerItem>(); 
     } 
    } 

        Public Class ExplorerItem 
        Public Property Header() As String 
            Get 
                Return m_Header 
            End Get 
            Set 
                m_Header = Value 
            End Set 
        End Property 
        Private m_Header As String 
        Public Property PreviewHeader() As String 
            Get 
                Return m_PreviewHeader 
            End Get 
            Set 
                m_PreviewHeader = Value 
            End Set 
        End Property 
        Private m_PreviewHeader As String 
        Public Property Path() As String 
            Get 
                Return m_Path 
            End Get 
            Set 
                m_Path = Value 
            End Set 
        End Property 
        Private m_Path As String 
        Public Property IconPath() As ImageSource 
            Get 
                Return m_IconPath 
            End Get 
            Set 
                m_IconPath = Value 
            End Set 
        End Property 
        Private m_IconPath As ImageSource 
 
        Public Property Children() As ObservableCollection(Of ExplorerItem) 
            Get 
                Return m_Children 
            End Get 
            Set 
                m_Children = Value 
            End Set 
        End Property 
        Private m_Children As ObservableCollection(Of ExplorerItem) 
 
        Public Sub New() 
            Me.Children = New ObservableCollection(Of ExplorerItem)() 
        End Sub 
    End Class

  • Create a MainViewModel class to define a hierarchical data collection of ExplorerItems:

    Example 5: Creating the main view model

        public class MainViewModel 
    { 
     public ObservableCollection<ExplorerItem> Items { get; set; } 
     public ExplorerItem Root { get; set; } 
     public MainViewModel() 
     { 
      this.Items = new ObservableCollection<ExplorerItem>(); 
      this.LoadItems(); 
     } 
     public void LoadItems() 
     { 
      ImageSourceConverter isc = new ImageSourceConverter(); 
      ExplorerItem personalInfo = new ExplorerItem() 
      { 
       Header = "Personal Folders", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/1PersonalFolders.png"), 
       Children = new ObservableCollection<ExplorerItem>()  
       { 
        new ExplorerItem() {Header = "Deleted Items(6)", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/2DeletedItems.png"), Path = "DeletedItems"}, 
        new ExplorerItem() {Header = "Drafts", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/3Drafts.png"), Path = "Drafts"}, 
        new ExplorerItem() {Header = "Inbox(14)", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/4Inbox.png"), Path = "Inbox", 
             Children = new ObservableCollection<ExplorerItem>() 
             { 
              new ExplorerItem() {Header = "Folders", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Folders"}, 
             } 
            }, 
        new ExplorerItem() {Header = "Junk E-mails", IconPath = (ImageSource)isc.ConvertFromString("../../Images/junk.png"), Path = "JunkEmails"}, 
        new ExplorerItem() {Header = "Outbox", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/outbox.png"), Path = "Outbox"}, 
        new ExplorerItem() {Header = "Sent Items", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/sent.png"), Path = "SentItems"}, 
        new ExplorerItem() {Header = "Search Folder", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/searchFolder.png"), Path = "SearchFolder", 
             Children = new ObservableCollection<ExplorerItem>() 
             { 
              new ExplorerItem() {Header = "From Follow up", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/search.png"), Path = "FromFollowup"}, 
              new ExplorerItem() {Header = "Large Mail", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/search.png"), Path = "LargeMail"}, 
              new ExplorerItem() {Header = "Unread Mail", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/search.png"), Path = "UnreadMail"}, 
             } 
            } 
       }, 
       Path = "PersonalFolders" 
      }; 
      ExplorerItem programFiles = new ExplorerItem() 
      { 
       Header = "Program Files", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        new ExplorerItem() { Header = "Microsoft", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Microsoft" }, 
        new ExplorerItem() { Header = "Microsoft.NET", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Microsoft.NET" }, 
        new ExplorerItem() 
        { 
         Header = "Internet Explorer", 
         IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
         Path = "InternetExplorer", 
         Children = new ObservableCollection<ExplorerItem>(){ 
                       new ExplorerItem() {Header = "SIGNUP", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "SIGNUP"} 
                      } 
        } 
       }, 
       Path = "ProgramFiles" 
      }; 
      ExplorerItem programFiles86 = new ExplorerItem() 
      { 
       Header = "Program Files(86)", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        new ExplorerItem() { Header = "Microsoft", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Microsoft" }, 
        new ExplorerItem() { Header = "Microsoft.NET", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Microsoft.NET" }, 
        new ExplorerItem() 
        { 
         Header = "Skype", 
         IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
         Path = "Skype", 
         Children = new ObservableCollection<ExplorerItem>(){ 
                       new ExplorerItem() {Header = "Phone", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Phone"}, 
                       new ExplorerItem() {Header = "Toolbars", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Toolbars"}, 
                       new ExplorerItem() {Header = "Plugin Manager", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "PluginManager"} 
                      } 
        }, 
        new ExplorerItem() 
        { 
         Header = "Notepad++", 
         IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
         Path = "Notepad++", 
         Children = new ObservableCollection<ExplorerItem>(){ 
                       new ExplorerItem() {Header = "localization", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "localization"}, 
                       new ExplorerItem() {Header = "plugins", IconPath = (ImageSource)isc.ConvertFromString("../../Images/junk.png"), Path = "plugins"} 
                      } 
        } 
       }, 
       Path = "ProgramFiles(86)" 
      }; 
      ExplorerItem downloads = new ExplorerItem() 
      { 
       Header = "Downloads", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/folder2.png"), 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        new ExplorerItem() { Header = "Music", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Music" }, 
        new ExplorerItem() { Header = "Movies", IconPath =  (ImageSource)isc.ConvertFromString("../../Images/folder.png"), Path = "Movies" } 
       }, 
       Path = "Downloads" 
      }; 
      ExplorerItem localHard = new ExplorerItem() 
      { 
       Header = "Local Disk (C:)", 
       Path = "LocalDisk(C:)", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/HardDrive16.png"), 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        personalInfo, 
        programFiles, 
        programFiles86, 
        downloads 
       } 
      }; 
      ExplorerItem localHard2 = new ExplorerItem() 
      { 
       Header = "Local Disk (D:)", 
       Path = "LocalDisk(D:)", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/HardDrive16.png") 
      }; 
      ExplorerItem computer = new ExplorerItem() 
      { 
       Header = "Computer", 
       Path = "Computer", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/Computer.png"), 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        localHard, 
        localHard2 
       } 
      }; 
      ExplorerItem computer2 = new ExplorerItem() 
      { 
       Header = "Computer2", 
       Path = "Computer2", 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        localHard, 
        localHard2 
       } 
      }; 
      this.Root = new ExplorerItem() 
      { 
       Header = "Desktop", 
       Path = "Desktop", 
       IconPath = (ImageSource)isc.ConvertFromString("../../Images/Desktop.png"), 
       Children = new ObservableCollection<ExplorerItem>() 
       { 
        computer, 
        computer2 
       } 
      }; 
      this.Items = new ObservableCollection<ExplorerItem>() { this.Root }; 
     } 
    } 

        Public Class MainViewModel 
        Public Property Items() As ObservableCollection(Of ExplorerItem) 
            Get 
                Return m_Items 
            End Get 
            Set 
                m_Items = Value 
            End Set 
        End Property 
        Private m_Items As ObservableCollection(Of ExplorerItem) 
        Public Property Root() As ExplorerItem 
            Get 
                Return m_Root 
            End Get 
            Set 
                m_Root = Value 
            End Set 
        End Property 
        Private m_Root As ExplorerItem 
 
        Public Sub New() 
            Me.Items = New ObservableCollection(Of ExplorerItem)() 
 
            Me.LoadItems() 
        End Sub 
        Public Sub LoadItems() 
            Dim isc As New ImageSourceConverter() 
            Dim personalInfo As New ExplorerItem() With { _ 
                Key .Header = "Personal Folders", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/1PersonalFolders.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Deleted Items(6)", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/2DeletedItems.png"), ImageSource), _ 
                        Key .Path = "DeletedItems" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Drafts", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/3Drafts.png"), ImageSource), _ 
                        Key .Path = "Drafts" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Inbox(14)", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/4Inbox.png"), ImageSource), _ 
                        Key .Path = "Inbox", _ 
                        Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "Folders", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                                Key .Path = "Folders" _ 
                            } _ 
                        } _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Junk E-mails", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/junk.png"), ImageSource), _ 
                        Key .Path = "JunkEmails" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Outbox", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/outbox.png"), ImageSource), _ 
                        Key .Path = "Outbox" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Sent Items", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/sent.png"), ImageSource), _ 
                        Key .Path = "SentItems" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Search Folder", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/searchFolder.png"), ImageSource), _ 
                        Key .Path = "SearchFolder", _ 
                        Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "From Follow up", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/search.png"), ImageSource), _ 
                                Key .Path = "FromFollowup" _ 
                            }, _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "Large Mail", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/search.png"), ImageSource), _ 
                                Key .Path = "LargeMail" _ 
                            }, _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "Unread Mail", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/search.png"), ImageSource), _ 
                                Key .Path = "UnreadMail" _ 
                            } _ 
                        } _ 
                    } _ 
                }, _ 
                Key .Path = "PersonalFolders" _ 
            } 
 
            Dim programFiles As New ExplorerItem() With { _ 
                Key .Header = "Program Files", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Microsoft", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                        Key .Path = "Microsoft" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Microsoft.NET", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                        Key .Path = "Microsoft.NET" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Internet Explorer", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                        Key .Path = "InternetExplorer", _ 
                        Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "SIGNUP", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                                Key .Path = "SIGNUP" _ 
                            } _ 
                        } _ 
                    } _ 
                }, _ 
                Key .Path = "ProgramFiles" _ 
            } 
 
            Dim programFiles86 As New ExplorerItem() With { _ 
                Key .Header = "Program Files(86)", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Microsoft", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                        Key .Path = "Microsoft" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Microsoft.NET", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                        Key .Path = "Microsoft.NET" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Skype", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                        Key .Path = "Skype", _ 
                        Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "Phone", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                                Key .Path = "Phone" _ 
                            }, _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "Toolbars", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                                Key .Path = "Toolbars" _ 
                            }, _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "Plugin Manager", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                                Key .Path = "PluginManager" _ 
                            } _ 
                        } _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Notepad++", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                        Key .Path = "Notepad++", _ 
                        Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "localization", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                                Key .Path = "localization" _ 
                            }, _ 
                            New ExplorerItem() With { _ 
                                Key .Header = "plugins", _ 
                                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/junk.png"), ImageSource), _ 
                                Key .Path = "plugins" _ 
                            } _ 
                        } _ 
                    } _ 
                }, _ 
                Key .Path = "ProgramFiles(86)" _ 
            } 
 
            Dim downloads As New ExplorerItem() With { _ 
                Key .Header = "Downloads", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder2.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Music", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                        Key .Path = "Music" _ 
                    }, _ 
                    New ExplorerItem() With { _ 
                        Key .Header = "Movies", _ 
                        Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/folder.png"), ImageSource), _ 
                        Key .Path = "Movies" _ 
                    } _ 
                }, _ 
                Key .Path = "Downloads" _ 
            } 
 
            Dim localHard As New ExplorerItem() With { _ 
                Key .Header = "Local Disk (C:)", _ 
                Key .Path = "LocalDisk(C:)", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/HardDrive16.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    personalInfo, _ 
                    programFiles, _ 
                    programFiles86, _ 
                    downloads _ 
                } _ 
            } 
 
            Dim localHard2 As New ExplorerItem() With { _ 
                Key .Header = "Local Disk (D:)", _ 
                Key .Path = "LocalDisk(D:)", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/HardDrive16.png"), ImageSource) _ 
            } 
 
            Dim computer As New ExplorerItem() With { _ 
                Key .Header = "Computer", _ 
                Key .Path = "Computer", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/Computer.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    localHard, _ 
                    localHard2 _ 
                } _ 
            } 
 
            Dim computer2 As New ExplorerItem() With { _ 
                Key .Header = "Computer2", _ 
                Key .Path = "Computer2", _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    localHard, _ 
                    localHard2 _ 
                } _ 
            } 
 
            Me.Root = New ExplorerItem() With { _ 
                Key .Header = "Desktop", _ 
                Key .Path = "Desktop", _ 
                Key .IconPath = DirectCast(isc.ConvertFromString("../../Images/Desktop.png"), ImageSource), _ 
                Key .Children = New ObservableCollection(Of ExplorerItem)() From { _ 
                    computer, _ 
                    computer2 _ 
                } _ 
            } 
 
            Me.Items = New ObservableCollection(Of ExplorerItem)() From { _ 
                Me.Root _ 
            } 
        End Sub 
    End Class

  • Display the hierarchical data collection in the RadBreadcrumb control using:

    • HierarchicalDataTemplates:

      Example 6: Using HierarchicalDataTemplates

              <FrameworkElement.DataContext> 
            <vm:MainViewModel /> 
        </FrameworkElement.DataContext> 
        <Grid Background="White"> 
            <telerik:RadBreadcrumb VerticalAlignment="Top"  
                                    Header="{Binding Root}" 
                                    ImagePath="IconPath" 
                                    IsIconVisible="True" 
                                    ItemsSource="{Binding Root.Children}" 
                                    TextModePath="Path"> 
                <telerik:RadBreadcrumb.HeaderTemplate> 
                    <DataTemplate> 
                        <TextBlock Text="{Binding Header}" /> 
                    </DataTemplate> 
                </telerik:RadBreadcrumb.HeaderTemplate> 
                <telerik:RadBreadcrumb.ItemTemplate> 
                    <telerik:HierarchicalDataTemplate ItemsSource="{Binding Children}"> 
                        <telerik:HierarchicalDataTemplate.ItemTemplate> 
                            <DataTemplate> 
                                <TextBlock Text="{Binding Header}" /> 
                            </DataTemplate> 
                        </telerik:HierarchicalDataTemplate.ItemTemplate> 
                        <TextBlock Text="{Binding Header}" /> 
                    </telerik:HierarchicalDataTemplate> 
                </telerik:RadBreadcrumb.ItemTemplate> 
            </telerik:RadBreadcrumb> 
        </Grid>

    • the Breadcrumb properties exposed to facilitate your efforts in populating the control with hierarchical data:

      • HeaderMemberPath - Gets or sets a path to a value on the source object to serve as the BreadcrumbItem.Header.

      • HierarchicalItemsSource - Gets or sets a path to a value on the source object to serve as the BreadcrumbItem 's ItemsSource collection.

      • HierarchicalMemberPath - Gets or sets a path to a value on the source object to serve as the BreadcrumbItem.DropDownHeader.

        Example 7: Using HierarchicalMemberPath

                    <telerik:RadBreadcrumb VerticalAlignment="Top" 
                                   Header="{Binding Root}" 
                                   HeaderMemberPath="Header" 
                                   HierarchicalItemsSource="Children" 
                                   HierarchicalMemberPath="Header" 
                                   ImagePath="IconPath" 
                                   IsIconVisible="True" 
                                   ItemsSource="{Binding Root.Children}" 
                                   TextModePath="Path" />

In both approaches the final result should look like this:

Silverlight RadBreadcrumb Hierarchical Data

You can download the sample project here

See Also

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