I have a ListBox I want to fill with data from two TextBoxesby clicking a Button. I think the problem comes from the differents textblock i have in my listbox. Here is what i want in image :
TheUI
The MainWindow.xaml of my listbox :
<ListBox x:Name="listBox"
ItemsSource="{Binding Issues}" Grid.Column="1" HorizontalAlignment="Left" Height="366" VerticalAlignment="Top" Width="453" Margin="0,0,-1,0">
<StackPanel Margin="3">
<DockPanel >
<TextBlock FontWeight="Bold" Text="Issue:"
DockPanel.Dock="Left"
Margin="5,0,10,0"/>
<TextBlock Text=" " />
<TextBlock Text="{Binding Issue}" Foreground="Green" FontWeight="Bold" />
</DockPanel>
<DockPanel >
<TextBlock FontWeight="Bold" Text="Comment:" Foreground ="DarkOrange"
DockPanel.Dock="Left"
Margin="5,0,5,0"/>
<TextBlock Text="{Binding Comment}" />
</DockPanel>
</StackPanel>
</ListBox>
My MainWindow.xaml.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
public sealed class ViewModel
{
public ObservableCollection<Issue> Issues { get; private set; }
public ViewModel()
{
Issues = new ObservableCollection<Issue>();
}
}
private void addIssue_Click(object sender, RoutedEventArgs e)
{
var vm = new ViewModel();
vm.Issues.Add(new Issue { Name = "Jon Skeet", Comment = "lolilol" });
DataContext = vm;
InitializeComponent();
}
}
My Issue.cs :
public sealed class Issue
{
public string Name { get; set; }
public string Comment { get; set; }
}
I follow this tutorial but i don't want to implement a Database :
Tuto
I also try to use this stackoverflow question
The error i have is 'System.InvalidOperationException' The Items collection must be empty to use ItemsSource
But not sure this is the heart of the problem.
Remove whatever you have inserted between <ListBox> and </ListBox>, as it is treated as part of Items collection.
Instead shift that content between <ListBox.ItemTemplate>...</ListBox.ItemTemplate>.
You don't need to update Context and InitializeComponent every time, atleast to your case.
public partial class MainWindow : Window
{
ViewModel vm = new ViewModel();
public MainWindow()
{
InitializeComponent();
DataContext = vm;
}
public sealed class ViewModel
{
public ObservableCollection<Issue> Issues { get; private set; }
public ViewModel()
{
Issues = new ObservableCollection<Issue>();
}
}
private void addIssue_Click(object sender, RoutedEventArgs e)
{
vm.Issues.Add(new Issue { Name = "Jon Skeet", Comment = "lolilol" });
}
}
Related
If I have an ObservableCollection in one of my classes. In my code behind my view I have an object of this class and use it as the DataBinding
this.DataContext = MyCustomClass;
in the xaml code of the view I want to bind several buttons to items in the Observable collection. Something like this:
<Button x:Name="Bid_Price_10" Grid.Row="0" Content="{Binding myObservableCollection[0].Price, Mode=OneWay}" Grid.ColumnSpan="2" HorizontalAlignment="Stretch" UseLayoutRounding="True" Padding="0"/>
<Button x:Name="Bid_Price_11" Grid.Row="1" Content="{Binding myObservableCollection[1].Price, Mode=OneWay}" Grid.ColumnSpan="2" HorizontalAlignment="Stretch" UseLayoutRounding="True" Padding="0"/>
At the moment this is not working, am I missing something ?
EDIT: Create full code to demo what I am trying to do:
So I have a Coffee class:
class Coffee
{
public int price { get; set; }
}
I have a drinks class that holds a list of coffees:
class Drinks
{
public List<Coffee> CoffeeList;
public Drinks()
{
CoffeeList = new List<Coffee>();
for (int i = 0; i < 10; i++)
{
Coffee c = new Coffee();
c.price = i;
CoffeeList.Add(c);
}
this.startCoffeePriceUpdateThread();
}
private void UpdateCofffeePrice()
{
while (true)
{
Thread.Sleep(1000);
foreach (var c in CoffeeList)
{
c.price++;
}
}
}
public void startCoffeePriceUpdateThread()
{
Thread coffeeThread = new Thread(new ThreadStart(UpdateCofffeePrice));
coffeeThread.Start();
}
}
my main window code behind:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Drinks ourDrinks = new Drinks();
this.DataContext = ourDrinks;
}
}
and my xaml code:
<Grid x:Name="Grid" HorizontalAlignment="Left" Height="193" Margin="77,31,0,0" VerticalAlignment="Top" Width="315">
<Button x:Name="Button" Content="{Binding CoffeeList[0].Price}" HorizontalAlignment="Left" Margin="49,25,0,0" VerticalAlignment="Top" Width="75" Height="28"/>
</Grid>
So the problem is that I am not seeing anything in the button. At the moment I am not using INotifyPropertyChange as I have been advised it would not be needed.
As Clemens suggested: if everything is fixed, you won't need ObservableCollection nor PropertyChanged notification. The following code should be sufficient:
public class Stuff
{
public string Price { get; set; }
}
public class myCustomClass
{
public List<Stuff> myCollection { get; set; }
}
public partial class MainWindow : Window
{
public myCustomClass myCustomInstance = new myCustomClass();
public MainWindow()
{
InitializeComponent();
myCustomInstance.myCollection = new List<Stuff>();
myCustomInstance.myCollection.Add(new Stuff() { Price = "1200$" });
myCustomInstance.myCollection.Add(new Stuff() { Price = "5.5$" });
this.DataContext = myCustomInstance;
}
}
And the simplified XAML
<Button Content="{Binding myCollection[0].Price, Mode=OneWay}"/>
<Button Content="{Binding myCollection[1].Price, Mode=OneWay}" />
NB: I specified an instance of myCustomClass as the DataContext. If you really need to bind it to the class, let me know and I will update the code.
I am trying to make a small program mainly to learn MVVM. Its a small Book Library.
I have 4 views(and 4 viewmodels).
MainWindow is the parent view, where i display the other 3 view in a content control.
The other 3 child views are HomeView, BookManagingView, ReaderManagingView.
In HomeView, i display 2 ListViews(one with readers, one with books), and in the other 2 views i edit/add books or readers.
In my HomeView i also have 2 buttons. When i click the buttons i want to switch from the HomeView, to BookManagingView or ReaderManagingView.
If i am trying to switch to any of the Views from the MainWindow, it works.
What i am trying to do is to switch from the HomeView, to BookManagingView or ReaderManagingView. How can i achieve that?
MainWindow:
<Grid>
<ContentControl Content="{Binding CurrentView}" Height="340" Width="500" />
<Button x:Name="btnHomeView" Content="Home" Command="{Binding ChangeViewToHomeView, UpdateSourceTrigger=PropertyChanged}" HorizontalAlignment="Left" Margin="16,70,0,0" VerticalAlignment="Top" Width="75"/>
<Button x:Name="btnBookManagingView" Content="Reader Options" Command="{Binding ChangeViewToReaderManagView,UpdateSourceTrigger=PropertyChanged}" HorizontalAlignment="Left" Margin="96,70,0,0" VerticalAlignment="Top" Width="92"/>
<Button x:Name="btnReaderManagingView" Content="Books Options" Command="{Binding ChangeViewToBookManagView,UpdateSourceTrigger=PropertyChanged}" HorizontalAlignment="Left" Margin="193,70,0,0" VerticalAlignment="Top" Width="92"/>
</Grid>
MainWindowVM:
public class MainWindowViewModel : ViewModelBase
{
private object currentView;
private HomeViewModel homeVM;
private ReaderManagingViewModel readerManagingVM;
private BookManagingViewModel bookManagingVM;
public MainWindowViewModel()
{
homeVM = new HomeViewModel();
readerManagingVM = new ReaderManagingViewModel();
bookManagingVM = new BookManagingViewModel();
CurrentView = homeVM;
ChangeViewToHomeView = new DefCommand(DisplayHomeView);
ChangeViewToReaderManagView = new DefCommand(DisplayReaderManagingView);
ChangeViewToBookManagView = new DefCommand(DisplayBookManagingView);
}
public DefCommand ChangeViewToHomeView { get; private set; }
public DefCommand ChangeViewToReaderManagView { get; private set; }
public DefCommand ChangeViewToBookManagView { get; private set; }
public object CurrentView
{
get { return currentView; }
set { currentView = value; RaisePropertyChanged(); }
}
public void DisplayHomeView()
{
CurrentView = homeVM;
}
public void DisplayReaderManagingView()
{
CurrentView = readerManagingVM;
}
public void DisplayBookManagingView()
{
CurrentView = bookManagingVM;
}
HomeView:
<Grid>
<ListView x:Name="listviewReaders" ItemsSource="{Binding ReadersList}" SelectedItem="{Binding SelectedReader, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="160" Margin="25,23,315,40">
...
<ListView x:Name="listviewBooks" ItemsSource="{Binding BookList, Mode=OneWay}" SelectedItem="{Binding SelectedBook, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="160" Margin="316,50,24,117">
...
<Button x:Name="btnEditReader" Command="{Binding EditReaderSwitch, UpdateSourceTrigger=PropertyChanged}" Content="EditR" HorizontalAlignment="Left" Margin="316,305,0,0" VerticalAlignment="Top" Width="74"/>
<Button x:Name="btnEditBook" Command="{Binding EditBookSwitch, UpdateSourceTrigger=PropertyChanged}" Content="EditB" HorizontalAlignment="Left" Margin="402,305,0,0" VerticalAlignment="Top" Width="74"/>
</Grid>
HomeVM:
private Reader selectedReader;
private Book selectedBook;
private BookListFilter selectedFilter;
private ObservableCollection<Book> bookList;
private ObservableCollection<Reader> readerList;
private IEnumerable<BookListFilter> bookLstItemSrc;
public HomeViewModel()
{
SelectedReader = new Reader();
SelectedBook = new Book();
SelectedFilter = BookListFilter.AllBooks;
BookDBDataContext rdb = new BookDBDataContext();
ReadersList = new ObservableCollection<Reader>(rdb.Readers);
GetBookList();
EditReaderSwitch = new DefCommand(EditReaderInfo);
EditBookSwitch = new DefCommand(EditBookInfo);
}
public DefCommand EditReaderSwitch { get; private set; }
public DefCommand EditBookSwitch { get; private set; }
private void EditBookInfo()
{
var tmpBook = new BookManagingViewModel(this);
var tmpMwvm = new MainWindowViewModel();
tmpMwvm.DisplayBookManagingView();
}
private void EditReaderInfo()
{
var tmpReader = new ReaderManagingViewModel(this);
var tmpMwvm = new MainWindowViewModel();
tmpMwvm.DisplayReaderManagingView();
}
Book & Reader ManagingViews have a bunch of textboxes and buttons for adding, deleting to/from database.
Book & Reader ManagingVM have methods for adding/deleting to/from database(right now they are empty and i will finish them if i manage to solve this problem first)
I have tried to navigate from HomeView to Book/ReaderManagingView with the EditBook/ReaderSwitch commands and EditBook/ReaderInfo() methods, but it doesnt work.
What am i doing wrong, and what should i do to fix it?
Sorry for the long post.
You need to set the CurrentView property of the existing MainWindowViewModel instance. Right now you are creating a new instance of the class.
You could inject the HomeViewModel with a MainWindowViewModel:
private readonly MainWindowViewModel _x;
public HomeViewModel(MainWindowViewModel x)
{
_x = x;
SelectedReader = new Reader();
...
}
private void EditBookInfo()
{
_x.DisplayBookManagingView();
}
MainWindowViewModel:
public MainWindowViewModel()
{
homeVM = new HomeViewModel(this);
}
When I click to register button (for example) in RegistrationViewModel or any other ViewModel, I would like to change the LeftSlide and MainSlide properties in MainWindowViewModel
LeftSlide = _leftSlides[0];
MainSlide = any other ViewModel;
I've read this documentation, but i can't implement this in my code
https://catelproject.atlassian.net/wiki/display/CTL/MVVM+communication+styles
How can i do this? Help me please
MainWindow.xaml
<DockPanel LastChildFill="True">
<DockPanel DockPanel.Dock="Top">
<Grid Width="120" DockPanel.Dock="Left">
<ContentControl Content="{Binding LeftSlide,
Converter={StaticResource ViewModelToViewConverter}}"></ContentControl>
</Grid>
<Grid DockPanel.Dock="Right">
<ContentControl Content="{Binding MainSlide,
Converter={StaticResource ViewModelToViewConverter}}"></ContentControl>
</Grid>
</DockPanel>
</DockPanel>
RegistrationViewModel.cs
public class RegistrationViewModel : ViewModelBase
{
public RegistrationViewModel()
{
RegistrationUserCommand = new Command(OnRegistrationUserCommandExecute);
}
public Command RegistrationUserCommand { get; private set; }
private void OnRegistrationUserCommandExecute()
{
//when I click this button, I need to change LeftSlide property in
// MainWindowViewModel to _leftSlides[1] (LeftSlide = _leftSlides[1];)
//for example
}
}
MainWindowViewModel.cs
public class MainWindowViewModel : ViewModelBase
{
private List<IViewModel> _leftSlides;
private List<IViewModel> _mainSlides;
public MainWindowViewModel()
{
_leftSlides = new List<IViewModel>
{
new NavViewModel(),
new AnotherNavViewModel()
//another ViewModels
};
_mainSlides = new List<IViewModel>
{
new RegistrationViewModel()
//another ViewModels
};
//Default ViewModels
MainSlide = _mainSlides[0];
LeftSlide = _leftSlides[0];
}
public IViewModel LeftSlide { get; set; }
public IViewModel MainSlide { get; set; }
}
I haven't any experience with WPF and Catel. It's our first project with my team. We are studying. And we can't stop using Catel Framework.
My first try at C#, WPF, and MVVM. I've looked at several answers and tutorials and just cannot seem to get this right.
I have a View a Model and a ViewModel file (Actually more, but trying to simplify). In the view I want to bind a textbox to a view model member. I also want to bind a button click to a view model method.
The delegate command for Login() works fine, but I can't seem to update the ID property in Acc.ID.
What would I need to change to be able to do both?
I understand I will probably need to implement the PropertyChanged event in the ViewModel instead of the Model...I just don't understand how.
What I can do is set the DataContextto user.Acc in the code behind to directly update the model, but then I obviously cannot bind to the Login() method.
ViewModel.cs
public class LoginVM
{
private ServerInterface _serverInterface;
private ICommand _loginCommand;
private EmployeeAccount _acc;
public ICommand LoginCommand
{
get { return _loginCommand; }
}
public LoginVM()
{
Acc = new EmployeeAccount();
_serverInterface = new ServerInterface();
_loginCommand = new DelegateCommand<String>(Login);
}
public EmployeeAccount Acc { get; set; }
private void Login(object state)
{
this.Acc.ID = _serverInterface.Encrypt(this.Acc.ID);
}
}
View.xaml.cs
public partial class LoginView : Window
{
public LoginView()
{
InitializeComponent();
BindInXaml();
}
private void BindInXaml()
{
base.DataContext = new LoginVM();
}
}
Model.cs
public class EmployeeAccount : INotifyPropertyChanged
{
String _id;
public EmployeeAccount()
{
ID = "5000";
Name = "George Washington";
isAdmin = true;
Pswd = "TheyDont";
}
public String ID
{
get { return _id; }
set
{
_id = value;
this.OnPropertyChanged("ID");
}
}
public string Name { get; set; }
public Boolean isAdmin { get; set; }
public string Pswd { get; set; }
public event PropertyChangedEventHandler PropertyChanged;
void OnPropertyChanged(string propName)
{
if (this.PropertyChanged != null)
this.PropertyChanged(
this, new PropertyChangedEventArgs(propName));
}
}
.xaml Put in only what matters really
<TextBox x:Name="txtLogInName" Margin="60,43,42,129" TextWrapping="Wrap" Text="{Binding Path=ID, UpdateSourceTrigger=PropertyChanged}" Width="120" Grid.Column="1" Grid.Row="1"/>
<Button x:Name="btnLogIn" Content="Log on" Command="{Binding LoginCommand}" Margin="160,151,10,23" Grid.Column="1" Grid.Row="1" RenderTransformOrigin="1.667,0.545"/>
<TextBlock x:Name="txtBlockPassReset" TextAlignment="Center" Grid.Row="1" Grid.Column="1" RenderTransformOrigin="1.348,1.765" Margin="60,101,42,78">
<Hyperlink>Reset Password</Hyperlink>
</TextBlock>
<PasswordBox x:Name="pswdBoxLoginPass" Grid.Column="1" HorizontalAlignment="Left" Margin="60,72,0,0" Grid.Row="1" VerticalAlignment="Top" Width="120" Password="Password"/>
Try changing your xaml from
<TextBox x:Name="txtLogInName" Margin="60,43,42,129" TextWrapping="Wrap"
Text="{Binding Path=ID, UpdateSourceTrigger=PropertyChanged}"
Width="120" Grid.Column="1" Grid.Row="1"/>
to
<TextBox x:Name="txtLogInName" Margin="60,43,42,129" TextWrapping="Wrap"
Text="{Binding Path=Acc.ID, UpdateSourceTrigger=PropertyChanged}"
Width="120" Grid.Column="1" Grid.Row="1" />
I've been working on this problem for about 3 hours now, and I got to a dead end.
Currently I'm trying to bind a list to a ComboBox.
I have used several methods to bind the List:
Code behind:
public partial class MainWindow : Window
{
public coImportReader ir { get; set; }
public MainWindow()
{
ir = new coImportReader();
InitializeComponent();
}
private void PremadeSearchPoints(coSearchPoint sp)
{
//SearchRefPoint.DataContext = ir.SearchPointCollection;
SearchRefPoint.ItemsSource = ir.SearchPointCollection;
SearchRefPoint.DisplayMemberPath = Name;
The data was binded correctly but the DisplayMemeberPath for some reason returned the name of the class and not the name of it's member.
The XAML method returned an empty string...
<ComboBox x:Name="SearchRefPoint" Height="30" Width="324" Margin="0,10,0,0"
VerticalAlignment="Top" ItemsSource="{Binding ir.SearchPointCollection}"
DisplayMemberPath="Name">
I've also tried to fill it with a new list which I create in the MainWindow. the result was the same in both cases.
Also I've tried to create and ListCollectionView which was success, but the problem was that I could get the index of the ComboBox item. I prefer to work by an Id. For that reason I was looking for a new solution which I found at: http://zamjad.wordpress.com/2012/08/15/multi-columns-combo-box/
The problem with this example is that is not clear how the itemsource is being binded.
Edit:
To sum things up: I'm currently trying to bind a list(SearchPointsCollection) of objects(coSearchPoints) defined in a class (coImportReader).
namespace Import_Rates_Manager
{
public partial class MainWindow : Window
{
public coImportReader ir;
public coViewerControles vc;
public coSearchPoint sp;
public MainWindow()
{
InitializeComponent();
ir = new coImportReader();
vc = new coViewerControles();
sp = new coSearchPoint();
SearchRefPoint.DataContext = ir;
}
}
}
//in function....
SearchRefPoint.ItemsSource = ir.SearchPointCollection;
SearchRefPoint.DisplayMemberPath = "Name";
namespace Import_Rates_Manager
{
public class coImportReader
{
public List<coSearchPoint> SearchPointCollection = new List<coSearchPoint>();
}
}
namespace Import_Rates_Manager
{
public class coSearchPoint
{
public coSearchPoint()
{
string Name = "";
Guid Id = Guid.NewGuid();
IRange FoundCell = null;
}
}
}
This results in a filled combobox with no text
Here a simple example using the MVVM Pattern
XAML
<Window x:Class="Binding_a_List_to_a_ComboBox.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid HorizontalAlignment="Left"
VerticalAlignment="Top">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="25"/>
</Grid.RowDefinitions>
<ComboBox Grid.Column="0" Grid.Row="0" ItemsSource="{Binding SearchPointCollection , UpdateSourceTrigger=PropertyChanged}"
SelectedIndex="{Binding MySelectedIndex, UpdateSourceTrigger=PropertyChanged}"
SelectedItem="{Binding MySelectedItem, UpdateSourceTrigger=PropertyChanged}">
<ComboBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding Id}" Grid.Row="0"/>
<TextBlock Text="{Binding Name}" Grid.Row="1"/>
<TextBlock Text="{Binding Otherstuff}" Grid.Row="2"/>
</Grid>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
<Button Content="Bind NOW" Grid.Column="0" Grid.Row="1" Click="Button_Click"/>
<TextBlock Text="{Binding MySelectedIndex, UpdateSourceTrigger=PropertyChanged}" Grid.Column="1" Grid.Row="0"/>
<Grid Grid.Column="1" Grid.Row="1"
DataContext="{Binding MySelectedItem, UpdateSourceTrigger=PropertyChanged}">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Id}" Grid.Column="0"/>
<TextBlock Text="{Binding Name}" Grid.Column="1"/>
<TextBlock Text="{Binding SomeValue}" Grid.Column="2"/>
</Grid>
</Grid>
Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;
using Import_Rates_Manager;
namespace Binding_a_List_to_a_ComboBox
{
/// <summary>
/// Interaktionslogik für MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
DataContext = new coImportReader();
}
}
}
namespace Import_Rates_Manager
{
public class coImportReader : INotifyPropertyChanged
{
private List<coSearchPoint> myItemsSource;
private int mySelectedIndex;
private coSearchPoint mySelectedItem;
public List<coSearchPoint> SearchPointCollection
{
get { return myItemsSource; }
set
{
myItemsSource = value;
OnPropertyChanged("SearchPointCollection ");
}
}
public int MySelectedIndex
{
get { return mySelectedIndex; }
set
{
mySelectedIndex = value;
OnPropertyChanged("MySelectedIndex");
}
}
public coSearchPoint MySelectedItem
{
get { return mySelectedItem; }
set { mySelectedItem = value;
OnPropertyChanged("MySelectedItem");
}
}
#region cTor
public coImportReader()
{
myItemsSource = new List<coSearchPoint>();
myItemsSource.Add(new coSearchPoint { Name = "Name1" });
myItemsSource.Add(new coSearchPoint { Name = "Name2" });
myItemsSource.Add(new coSearchPoint { Name = "Name3" });
myItemsSource.Add(new coSearchPoint { Name = "Name4" });
myItemsSource.Add(new coSearchPoint { Name = "Name5" });
}
#endregion
#region INotifyPropertyChanged Member
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
#endregion
}
public class coSearchPoint
{
public Guid Id { get; set; }
public String Name { get; set; }
public IRange FoundCell { get; set; }
public coSearchPoint()
{
Name = "";
Id = Guid.NewGuid();
FoundCell = null;
}
}
public interface IRange
{
string SomeValue { get; }
}
}
Here are 3 Classes:
MainWindow which set VM as his Datacontext
coImportReader the Class which presents your properties for your bindings
coSearchPoint which is just a Container for your information
IRange which is just an Interface
The Collection you are binding to needs to be a property of ir not a field.
Also try this :
public coImportReader ir { get; set; }
public <type of SearchPointCollection> irCollection { get { return ir != null ? ir.SearchPointCollection : null; } }
Bind to irCollection and see what errors you get if any.
The DisplayMemberPath should contain the property name of the elements in your collection. Assuming the elements in the SearchPointCollection are of the type SearchPoint and this class has a Property SearchPointName you should set DisplayMemberPath like this:
SearchRefPoint.DisplayMemberPath = "SearchPointName";
Edit:
In your code the class coSearchPoint has the Field Name defined in the Constructor. Name has to be a Property of the class, otherwise the Binding can't work.