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:

• 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

  C#

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

  VB.NET

  	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

  C#

  	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);
  	 }
  	}

  VB.NET

  	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

  XAML

  	<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

  C#

  	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>();
  	 }
  	}

  VB.NET

  	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

  C#

  	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 };
  	 }
  	}

  VB.NET

  	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

    XAML

    	<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>
    	            <HierarchicalDataTemplate ItemsSource="{Binding Children}">
    	                <HierarchicalDataTemplate.ItemTemplate>
    	                    <DataTemplate>
    	                        <TextBlock Text="{Binding Header}" />
    	                    </DataTemplate>
    	                </HierarchicalDataTemplate.ItemTemplate>
    	                <TextBlock Text="{Binding Header}" />
    	            </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

      XAML

      	<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:

See Also

• Visual Structure
• Getting Started
• Features Overview