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Multiple WCF windows services on the same box - endpoint configuration

- by David Belanger

Hi, I have 2 windows services installed on a machine with different service names, they install and start fine. What's happening is that they're both listening to the same endpoints and thus competing for messages. I've tried to change the baseAddress to be different for both services without success. Here's my service host config: <configuration> <appSettings> <add key="ServiceName" value="Service - Service Host 1"/> </appSettings> <system.serviceModel> <bindings> <wsHttpBinding> <binding name="NoSecurityBinding"> <security mode="None"> <message establishSecurityContext="false"/> <transport clientCredentialType="None"/> </security> </binding> </wsHttpBinding> <basicHttpBinding> <binding name="NoSecurityBinding"> <security mode="None"> <transport clientCredentialType="None"/> </security> </binding> </basicHttpBinding> </bindings> <services> <service name="Lib.Interface.Service" behaviorConfiguration="Lib.Interface.ServiceBehavior"> <host> <baseAddresses> <add baseAddress="http://localhost:8000/Service"/> </baseAddresses> </host> <endpoint address="" binding="basicHttpBinding" bindingConfiguration="NoSecurityBinding" contract="Lib.Interface.IService"/> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> <behaviors> <serviceBehaviors> <behavior name="Lib.Interface.ServiceBehavior"> <serviceMetadata httpGetEnabled="True" policyVersion="Policy12"/> <serviceDebug includeExceptionDetailInFaults="False"/> </behavior> </serviceBehaviors> </behaviors> Any idea how I could set up the services (other than unique service names) so they're not conflicting with one another? Thanks.

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WPF items not visible when grouping is applied

- by Tri Q

Hi, I'm having this strange issue with my ItemsControl grouping. I have the following setup: <ItemsControl Margin="3" ItemsSource="{Binding Communications.View}" > <ItemsControl.GroupStyle> <GroupStyle> <GroupStyle.ContainerStyle> <Style TargetType="{x:Type GroupItem}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type GroupItem}"> <Expander> <Expander.Header> <Grid> <Grid.ColumnDefinitions > <ColumnDefinition Width="*" /> <ColumnDefinition Width="Auto" /> </Grid.ColumnDefinitions> <TextBlock Text="{Binding ItemCount, StringFormat='{}[{0}] '}" FontWeight="Bold" /> <TextBlock Grid.Column="1" Text="{Binding Name, Converter={StaticResource GroupingFormatter}, StringFormat='{}Subject: {0}'}" FontWeight="Bold" /> </Grid> </Expander.Header> <ItemsPresenter /> </Expander> </ControlTemplate> </Setter.Value> </Setter> </Style> </GroupStyle.ContainerStyle> </GroupStyle> </ItemsControl.GroupStyle> <ItemsControl.ItemTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="Auto" /> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition /> </Grid.RowDefinitions> <TextBlock FontWeight="Bold" Text="{Binding Inspector, Converter={StaticResource NameFormatter}, StringFormat='{}From {0}:'}" Margin="3" /> <TextBlock Text="{Binding SentDate, StringFormat='{}{0:dd/MM/yy}'}" Grid.Row="1" Margin="3"/> <TextBlock Text="{Binding Message }" Grid.Column="1" Grid.RowSpan="2" Margin="3"/> <Button Command="vm:CommunicationViewModel.DeleteMessageCommand" CommandParameter="{Binding}" HorizontalAlignment="Right" Grid.Column="2">Delete</Button> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> In my ViewModel, I expose a CollectionViewSource named 'Communications'. I proceed to adding a grouping patter like so: Communications.GroupDescriptions.Add(new PropertyGroupDescription("Subject")); Now, the problem i'm experience is the grouping work fine, but I can't see any items inside the groups. What am I doing wrong? Any pointers would be much appreciated.

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wpf style converter : "Convert" called by every datagrid column using it

- by Sonic Soul

I created a converter, and assigned it to a style. than i assigned that style, to the columns i want affected. as rows are added, and while stepping through debugger, i noticed that the converter convert method gets called 1 time per column (each time it is used). is there a way to optimize it better, so that it gets called only once and all columns using it get the same value? <Style x:Key="ConditionalColorStyle" TargetType="{x:Type DataGridCell}" BasedOn="{StaticResource CellStyle}"> <Setter Property="Foreground"> <Setter.Value> <Binding> <Binding.Converter> <local:ConditionalColorConverter /> </Binding.Converter> </Binding> </Setter.Value> </Setter> </Style>

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Hierarchy as grid

- by seesharp

I have hierarchy: public class Parameter { public string Name { get; set; } public Value Value { get; set; } } public abstract class Value { } public class StringValue : Value { public string Str { get; set; } } public class ComplexValue : Value { public ComplexValue() { Parameters = new List<Parameter>(); } public List<Parameter> Parameters { get; set; } } /// Contains ComplexValue public class ComplexParameter : Parameter { } And XAML with templates <Window.Resources> <DataTemplate DataType="{x:Type pc:Parameter}"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Label Grid.Column="0" Content="{Binding Name}"/> <ContentPresenter Grid.Column="1" Content="{Binding Value}"/> </Grid> </DataTemplate> <DataTemplate DataType="{x:Type pc:ComplexParameter}"> <StackPanel> <Label Content="{Binding Name}"/> <ContentControl Margin="18,0,0,0" Content="{Binding Value}"/> </StackPanel> </DataTemplate> <DataTemplate DataType="{x:Type pc:ComplexValue}"> <ItemsControl ItemsSource="{Binding Parameters}"/> </DataTemplate> <DataTemplate DataType="{x:Type pc:StringValue}"> <TextBox Text="{Binding Str}"/> </DataTemplate> </Window.Resources> This look like: Param1 -Control---- Param2 -Control---- Complex1 Sub Param1 -Control- Sub Param2 -Control- Or image here: freeimagehosting.net/uploads/9d438f52e7.png Question How to do indent only in left column (parameter names). Something like this: Param1 -Control---- Param2 -Control---- Complex1 Sub Param1 -Control---- Sub Param2 -Control---- Or image here: freeimagehosting.net/uploads/4ab3045b75.png

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How can I control the height of a ListView in WPF, using a complex DataTemplate with DataTriggers?

- by Rob Perkins

I have a ListView element with a DataTemplate for each ListViewItem defined as follows. When run, the ListView's height is not collapsed onto the items in the view, which is undesirable behavior: <DataTemplate x:Key="LicenseItemTemplate"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <TextBlock Grid.Row="0" Text="{Binding company}"></TextBlock> <Grid Grid.Row="1" Style="{StaticResource HiddenWhenNotSelectedStyle}"> <Grid.RowDefinitions> <RowDefinition /> </Grid.RowDefinitions> <Button Grid.Row="0">ClickIt</Button> </Grid> </Grid> </DataTemplate> The second row of the outer grid has a style applied which looks like this. The purpose of the style is to : <Style TargetType="{x:Type Grid}" x:Key="HiddenWhenNotSelectedStyle" > <Style.Triggers> <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource={ RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem} } }" Value="False"> <Setter Property="Grid.Visibility" Value="Collapsed" /> </DataTrigger> <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource={ RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem} } }" Value="True"> <Setter Property="Grid.Visibility" Value="Visible" /> </DataTrigger> </Style.Triggers> </Style> The ListView renders like this: The desired appearance is this, when none of the elements are selected: ...with, of course, the ListView's height adjusting to accommodate the additional content when the second grid is made visible by selection. What can I do to get the desired behavior?

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MasterDetails Loading on Demand problem

- by devnet247

Hi As an exercise to learn wpf and understand how binding works I have an example that works.However when I try to load on demand I fail miserably. I basically have 3 classes Country-City-Hotels If I load ALL in one go it all works if I load on demand it fails miserably. What Am I doing wrong? Works <Window x:Class="MasterDetailCollectionViewSource.CountryCityHotelWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="CountryCityHotelWindow" Height="300" Width="450"> <Window.Resources> <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCityList},Path=Hotels}" x:Key="cvsHotelList"/> </Window.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Text="Countries"/> <TextBlock Grid.Column="1" Grid.Row="0" Text="Cities"/> <TextBlock Grid.Column="2" Grid.Row="0" Text="Hotels"/> <ListBox Grid.Column="0" Grid.Row="1" Name="lstCountries" ItemsSource="{Binding Source={StaticResource cvsCountryList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="1" Grid.Row="1" Name="lstCities" ItemsSource="{Binding Source={StaticResource cvsCityList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="2" Grid.Row="1" Name="lstHotels" ItemsSource="{Binding Source={StaticResource cvsHotelList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> </Grid> </Window> DOES NOT WORK Xaml is the same as above, however I have added the following that fetches stuff on demand. It loads the countries only as opposed to the other one where it Loads everything at once and not code behind is necessary. public CountryCityHotelWindow() { InitializeComponent(); //Load only country Initially lstCountries.ItemsSource=Repository.GetCountries(); DataContext = lstCountries; } private void OnSelectionChanged(object sender, SelectionChangedEventArgs e) { var lstBox = (ListBox)e.OriginalSource; switch (lstBox.Name) { case "lstCountries": var country = lstBox.SelectedItem as Country; if (country == null) return; lstCities.ItemsSource = Repository.GetCities(country.Name); break; case "lstCities": var city = lstBox.SelectedItem as City; if (city == null) return; lstHotels.ItemsSource = Repository.GetHotels(city.Name); break; case "lstHotels": break; } } What Am I doing Wrong? Thanks

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What's the order of execution in property setters when using IDataErrorInfo?

- by Benny Jobigan

Situation: Many times with WPF, we use INotifyPropertyChanged and IDataErrorInfo to enable binding and validation on our data objects. I've got a lot of properties that look like this: public SomeObject SomeData { get { return _SomeData; } set { _SomeData = value; OnPropertyChanged("SomeData"); } } Of course, I have an appropriate overridden IDataErrorInfo.this[] in my class to do validation. Question: In a binding situation, when does the validation code get executed? When is the property set? When is the setter code executed? What if the validation fails? For example: User enters new data. Binding writes data to property. Property set method is executed. Binding checks this[] for validation. If the data is invalid, the binding sets the property back to the old value. Property set method is executed again. This is important if you are adding "hooks" into the set method, like: public string PathToFile { get { return _PathToFile; } set { if (_PathToFile != value && // prevent unnecessary actions OnPathToFileChanging(value)) // allow subclasses to do something or stop the setter { _PathToFile = value; OnPathToFileChanged(); // allow subclasses to do something afterwards OnPropertyChanged("PathToFile"); } } }

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How can I bind Wpf DataGridColumn to an object?

- by John

I want to bind the columns of my WPF DataGrid to some objects in a Dictionary like this: Binding Path=Objects[i] where Objects is my Dictionary of objects, so that each cell will represent an Object element. How can I do that? I suppose that I need to create a template for my cell, which I did, but how to get the result of column binding in my template? I know that by default the content of a DataGridCell is a TextBlock and it's Text property is set through column binding result, but if that result is an object I guess that I have to create a ContentTemplate. How do I do that, as the stuff I tried is not displaying anything. Here it is what I tried: <Style x:Key="CellStyle" TargetType="{x:Type dg:DataGridCell}"> <Setter Property="Template"> ---it should realy be ContentTemplate? <Setter.Value> <ControlTemplate> <controls:DataGridCellControl CurrentObject="{Binding }"/> -- I would expect to get the object like this for this column path : Path=Objects[i] but is not working </ControlTemplate> </Setter.Value> </Setter> </Style> So, to make myself completly clear, i want to get in CurrentObject property of my DataGridCellControl the current object that should result if I set the column binding in my data grid like this Path=Objects[i]. Thank you for any suggestion, John.

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I have a WPF/Silverlight ListView whose height is unpredictable and too high. How do I control it be

- by Rob Perkins

I have a ListView element with a DataTemplate for each ListViewItem defined as follows. When run, the ListView's height is not collapsed onto the items in the view, which is undesirable behavior: <DataTemplate x:Key="LicenseItemTemplate"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <TextBlock Grid.Row="0" Text="{Binding company}"></TextBlock> <Grid Grid.Row="1" Style="{StaticResource HiddenWhenNotSelectedStyle}"> <Grid.RowDefinitions> <RowDefinition /> </Grid.RowDefinitions> <Button Grid.Row="0">ClickIt</Button> </Grid> </Grid> </DataTemplate> The second row of the outer grid has a style applied which looks like this. The purpose of the style is to : <Style TargetType="{x:Type Grid}" x:Key="HiddenWhenNotSelectedStyle" > <Style.Triggers> <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource={ RelativeSource Mode=FindAncestor, AncestorType={x:Type ListViewItem} } }" Value="False"> <Setter Property="Grid.Visibility" Value="Collapsed" /> </DataTrigger> <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource={ RelativeSource Mode=FindAncestor, AncestorType={x:Type ListViewItem} } }" Value="True"> <Setter Property="Grid.Visibility" Value="Visible" /> </DataTrigger> </Style.Triggers> </Style> The ListView renders like this: The desired appearance is this, when none of the elements are selected: ...with, of course, the ListView's height adjusting to accommodate the additional content when the second grid is made visible by selection. What can I do to get the desired behavior?

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WCF client using basic HTTP authentication

- by AZ

I'm trying to connect to a service that uses basic HTTP authentication. I've configured my binding like this <bindings> <basicHttpBinding> <binding name ="binding"> <security mode="TransportCredentialOnly"> <transport clientCredentialType="Basic"/> </security> </binding> </basicHttpBinding> </bindings> and i'm setting the credentials like this: client.ClientCredentials.UserName.UserName = Settings.UserName; client.ClientCredentials.UserName.Password = Settings.Password; Sill when i make a request i get a "The HTTP request is unauthorized with client authentication scheme 'Basic'" fault back. What am i doing wrong? (i don't have control over the service so all solutions must relate to the client configuration)

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Abstract mapping with custom JiBX marshaller

- by aweigold

I have created a custom JiBX marshaller and verified it works. It works by doing something like the following: <binding xmlns:tns="http://foobar.com/foo" direction="output"> <namespace uri="http://foobar.com/foo" default="elements"/> <mapping class="java.util.HashMap" marshaller="com.foobar.Marshaller1"/> <mapping name="context" class="com.foobar.Context"> <structure field="configuration"/> </mapping> </binding> However I need to create multiple marshallers for different HashMaps. So I tried to reference it with abstract mapping like this: <binding xmlns:tns="http://foobar.com/foo" direction="output"> <namespace uri="http://foobar.com/foo" default="elements"/> <mapping abstract="true" type-name="configuration" class="java.util.HashMap" marshaller="com.foobar.Marshaller1"/> <mapping abstract="true" type-name="overrides" class="java.util.HashMap" marshaller="com.foobar.Marshaller2"/> <mapping name="context" class="com.foobar.Context"> <structure map-as="configuration" field="configuration"/> <structure map-as="overrides" field="overrides"/> </mapping> </binding> However when doing so, when I attempt to build the binding, I receive the following: Error during code generation for file "E:\project\src\main\jibx\foo.jibx" - this may be due to an error in your binding or classpath, or to an error in the JiBX code My guess is that either I'm missing something I need to implement to enable my custom marshaller for abstract mapping, or custom marshallers do not support abstract mapping. I have found the IAbstractMarshaller interface in the JiBX API (http://jibx.sourceforge.net/api/org/jibx/runtime/IAbstractMarshaller.html), however the documentation seems unclear to me on if this is what I need to implement, as well as how it works if so. I have not been able to find an implementation of this interface to work off of as an example. My question is, how do you do abstract mapping with custom marshallers (if it's possible)? If it is done via the IAbstractMarshaller interface, how does it work and/or how should I implement it?

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Set focus to a button in a new TabItem

- by Jan

I use a TabControl to display a list of items. The ItemView is a separate control I wrote. <TabControl SelectedItem="{Binding CurrentItem}" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding ItemList}"> <TabControl.ContentTemplate> <DataTemplate> <ctrls:ItemView/> </DataTemplate> </TabControl.ContentTemplate> <TabControl.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding ShortItemDescription}"/> </DataTemplate> </TabControl.ItemTemplate> </TabControl> If the user presses a Button a new ViewModel is added to the list of ViewModels and the TabControl displays it as a new tab. After adding the new tab is selected. <Button Command="{Binding AddItemCommand}" Content="Add item"/> Inside of the new ViewModel is a button that needs to be focused each time a new tab is added. I have tried to use the FocusManager and the Initialized event in the ItemView but these are only called for the first time I add a new tab. <UserControl x:Class="ItemView" ... Initialized="ViewInitialized"> <Grid> ...  <Button Content="Search" Command="{Binding SearchCommand}" Name="SearchButton" Grid.Column="0" Grid.Row="0"/> </Grid> </UserControl> Any ideas?

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WPF Edit hours and minutes of a DateTime

- by PaN1C_Showt1Me

Hi ! I have 3 TextBoxes to edit a DateTime. One to edit the Date and 2 to edit hour and minutes. How would you do that? The code below doesn't reflect the DateTime changes when editing the hour or minute: <TextBox Text="{Binding MyDateTime}" /> <TextBox Text="{Binding MyDateTime, StringFormat=\{0:HH\}}}" /> <TextBox Text="{Binding MyDateTime}, StringFormat=\{0:mm\}}" />

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custom control in DataGridTemplateColumn

- by Johnsonlu

Hi all, I'd like to add my custom control into a template column of data grid. The custom control is very similar to a text box, but has an icon in it. The user can click the icon, and selects an item from a prompted window, then the selected item will be filled into the text box. My problem is when the text box is filled, after I click the second column, the text will disappear. If I replace the custom control with a simple text box, the result is the same. Here is the sample code: //Employee.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace SimpleGridTest { public class Employee { public string Department { get; set; } public int ID { get; set; } public string Name { get; set; } } } Mainwindow.xaml <Window x:Class="SimpleGridTest.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> <DataGrid x:Name="grid" Grid.Row="1" Margin="5" AutoGenerateColumns="False" RowHeight="25" RowHeaderWidth="10" ItemsSource="{Binding}" CanUserAddRows="True" CanUserSortColumns="False"> <DataGrid.Columns> <DataGridTemplateColumn Header="Department" Width="150"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBox Text="{Binding Department}" /> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> <DataGridTextColumn Header="ID" Binding="{Binding Path=ID}" Width="100"/> <DataGridTextColumn Header="Name" Binding="{Binding Path=Name}" Width="200"/> </DataGrid.Columns> </DataGrid> </Grid> </Window> MainWindow.xaml.cs using System.Windows; using System.Collections.ObjectModel; namespace SimpleGridTest { /// <summary> /// Interaction logic for MainWindow.xaml /// </summary> public partial class MainWindow : Window { private ObservableCollection<Employee> _employees = new ObservableCollection<Employee>(); public ObservableCollection<Employee> Employees { get { return _employees; } set { _employees = value; } } public MainWindow() { InitializeComponent(); grid.ItemsSource = Employees; } } } How can I fix this problem? Or I need to write a DataGrid***Column as DataGridTextColumn? Thanks in advance! Best Regards, Johnson

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WPF TextBox Focus

- by Jezz

I am setting focus on a Textbox like this: <DockPanel Margin="0,0,0,0" LastChildFill="True" FocusManager.FocusedElement="{Binding ElementName=messengerTextToSend}"> <ListBox x:Name="messengerLabelParticipants" DockPanel.Dock="Top" Height="79" Margin="0,1,0,0" Padding="0" Background="{x:Null}" BorderBrush="{x:Null}" BorderThickness="0" AllowDrop="True" ItemsSource="{Binding Path=involvedUsers}" ItemTemplate="{StaticResource chatParticipants}" Tag="{Binding Path=chatSessionID}" Drop="participantList_Drop" DragEnter="participantList_DragEnter" DragLeave="messengerLabelParticipants_DragLeave"> </ListBox> <TextBox x:Name="messengerTextToSend" Focusable="True" Margin="10,0,10,10" DockPanel.Dock="Bottom" Height="100" Tag="{Binding Path=.}" KeyUp="messengerTextToSend_KeyUp" Cursor="IBeam" Style="{StaticResource messengerTextBoxSendText}"/> <ScrollViewer x:Name="messengerScroller" Template="{DynamicResource ScrollViewerControlTemplate1}" ScrollChanged="messengerScroller_ScrollChanged" Loaded="messengerScroller_Loaded" Margin="0,10,0,10"> <ListBox x:Name="messengerListMessages" Margin="10,0,0,0" Padding="0" Background="{x:Null}" BorderBrush="{x:Null}" BorderThickness="0" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=messages}" ItemTemplateSelector="{StaticResource messageTemplateSelector}"> </ListBox> </ScrollViewer> </DockPanel> However, when the page load, although the Textbox visually appears to have focus, the cursor is static and I have to manually either click on the Textbox or tab to it in order to start typing. I'm not sure what I'm doing wrong but I've tried every setting, inclduing setting it in the code to get it working. Any assistance would be greatly appreciated.

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Silverlight MVVM in VS2008 - a non starter?

- by bplus

I'm still very new to Silverlight. I'm currently using vs2008 at work. As far as I can gather Silverlight 4 is vs2010 only. I stumbled across this article on command binding, it says that command binding is a new feature introduced in silverlight 4. Is command binding integral to MVVM in silverlight, does it make MVVM much simpler to implement? Thanks for any help.

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Strange behaviour of CheckBox and TwoWay bound property

- by walkor

Hello, everyone. I fell in the following situation: I have a main UserControl with a DataGrid (which contains List). I need to show different panels depending on properties of the selected row(object). So i've created 2 controls and included them into this main control. Main control has 2 public properties - public List<ComplexObject> SourceList { get; set; } and public ComplexObject CurrentObject { get; set; } Pseudo-code: <UserControl x:Name="Main"> <DataGrid ItemsSource="{Binding SourceList}" SelectedItem="{Binding CurrentObject, Mode=TwoWay}"/> <Controls:RightPanelFirst Visibility="condition2"/> <Controls:RightPanelSecond Visibility="condition2"/> </UserControl> RightPanelFirst and RightPanelSecond have the following xaml: <UserControl> <... content here...> <CheckBox IsChecked="{Binding CurrentObject.ComplexProperty.SimpleProperty1, Mode=TwoWay}"> <CheckBox IsChecked="{Binding CurrentObject.ComplexProperty.SimpleProperty2, Mode=TwoWay}" x:Name="cbSecond"> <TextBox IsEnabled="{Binding IsChecked, ElementName=cbSecond}"/> </UserControl> So, my actual steps: Check both checkboxes (object values are set to true) Make other actions in code behind which modify CurrentObject. Then i want UI to reflect the changes, so I call NotifyPropertyChanged("CurrentObject"); SimpleProperty1 remains the same, but SimpleProperty2 resets to false I have no idea why this happens, can anyone help me please? Silverlight drives me mad.

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Displaying xaml resources dynamically?

- by Robert

I used Mike Swanson's illustrator to xaml converter to convert some of my images to xaml. The convert creates a viewbox that contains the image. These viewboxes I made resource files in my program. The code below shows what I'm trying to do: I have a viewmodel that has an enum variable called PrimaryWinding of type Windings. The values PrimD and PrimY of the enum select the respective PrimD and PrimY xaml files in the resources. <UserControl.Resources> <DataTemplate x:Key="PrimTrafo" DataType="{x:Type l:Windings}"> <Frame Source="{Binding}" x:Name="PART_Image" NavigationUIVisibility="Hidden"> <Frame.LayoutTransform> <ScaleTransform ScaleX="0.5" ScaleY="0.5"/> </Frame.LayoutTransform> </Frame> <DataTemplate.Triggers> <DataTrigger Binding="{Binding}" Value="PrimD"> <Setter TargetName="PART_Image" Property="Source" Value="Resources\PrimD.xaml" /> </DataTrigger> <DataTrigger Binding="{Binding}" Value="PrimY"> <Setter TargetName="PART_Image" Property="Source" Value="Resources\PrimY.xaml" /> </DataTrigger> </DataTemplate.Triggers> </DataTemplate> </UserControl.Resources>  <Grid > <Grid.ColumnDefinitions> <ColumnDefinition Width="2*"></ColumnDefinition> <ColumnDefinition Width="2*"></ColumnDefinition> <ColumnDefinition Width="1*"></ColumnDefinition> </Grid.ColumnDefinitions> <ContentControl Grid.Column="0" Content="{Binding PrimaryWinding}" ContentTemplate="{StaticResource PrimTrafo}"/> </Grid> This code works. Only I can't resize the drawings to the size of the grid cell. I added the ScaleTransform class to resize the image. Is a Frame the wrong class to hold the drawings? Should I use the ScaleTransform class to resize the drawing to the size of the cell? And how can I do that dynamically?

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Access property of DataContext in ItemTemplate

- by amrinder

My datacontext has two properties: Items which is a collection and DetailsVisiblity which is enum of type Visiblity. On the page I have a Listbox with ItemsSource="{Binding Entries}". Inside the DataTemplate, I can bind stuff to properties of Items, but how do I get access to DetailsVisiblity which is a property of DataContext? DataContext has two properties: ObservableCollection<Item> Entries, and Visibility DetailsVisiblity. Item class has two properties: Title and Details. Here is the view. How do I bind Visiblity of the second TextBlock to DetailsVisiblity property? <ListBox "{Binding Items}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Title}" /> <TextBlock Text="{Binding Details}" Visibility="{Binding ???}" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox>

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How to make a cell in a datagrid readonly based the content on another cell in SL4?

- by Nair

I have two columns, the second column depends on the content on the first column. By default, the second columns is readonly. When I enter some valid value, I want the second column to become editable. To achive this, I created a cell template and cell edit template on the second column where back ground and read only bound to the first column. On load, the first column is null so my second columns comes correctly as read only. Following is Cell Template for second column, where the background color is set by based on the first column. <DataTemplate> <Grid> <Border Background="{Binding FristColumn,Converter={StaticResource ColorConverter}}"/> <TextBlock Text="{Binding SecondColumn, Converter={StaticResource NumberFormatter}}" HorizontalAlignment="Stretch" VerticalAlignment="Center" Margin="0"/> </Grid> </DataTemplate> Following is cell edit template for second column to make it editable <DataTemplate> <Grid> <TextBox Text="{Binding SecondColumn, Mode=TwoWay, Converter={StaticResource NumberFormatter}}" Margin="0" HorizontalAlignment="Right" IsReadOnly="{Binding FirstColumn, Converter={StaticResource readOnlyConverter}, ConverterParameter=FirstColumn}" Background="{Binding Depend,Converter={StaticResource ColorConverter}, ConverterParameter=FirstColumn}" /> </Grid> </DataTemplate> With these two in place, when enter the valid value in the first column, I was expecting the second column color to change but it does not. But If I double click on the cell then it behaves properly based on the first cell. Is there some thing I am missing?

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Stacked up with web service configuration

- by Allan Chua

I'm currently stacked with the web service that im creating right now. when Testing it in local it all works fine but when I try to deploy it to the web server it throws me the following error An error occurred while trying to make a request to URI '...my web service URI here....'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details. here is my web config. <?xml version="1.0"?> <configuration> <configSections> </configSections> <system.webServer> <modules runAllManagedModulesForAllRequests="true"> </modules> <validation validateIntegratedModeConfiguration="false" /> <security> <requestFiltering> <requestLimits maxAllowedContentLength="2000000000" /> </requestFiltering> </security> </system.webServer> <connectionStrings> <add name="........" providerName="System.Data.SqlClient" /> </connectionStrings> <appSettings>  <add key="DataConnectionString" value="..........." /> </appSettings> <system.web> <compilation debug="true" targetFramework="4.0"> <buildProviders> <add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> </buildProviders> </compilation> <httpRuntime executionTimeout="1200" maxRequestLength="2000000" /> </system.web> <system.serviceModel> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> <behaviors> <serviceBehaviors> <behavior name="Service1"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> <dataContractSerializer maxItemsInObjectGraph="2000000000" /> </behavior> <behavior name=""> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="false" /> </behavior> <behavior name="nextSPOTServiceBehavior"> <serviceMetadata httpsGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="true" /> <dataContractSerializer maxItemsInObjectGraph="2000000000" /> </behavior> </serviceBehaviors> </behaviors> <bindings> <basicHttpBinding> <binding name="SecureBasic" closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647"> <security mode="Transport" /> <readerQuotas maxArrayLength="2000000" maxStringContentLength="2000000"/> </binding> <binding name="BasicHttpBinding_IDownloadManagerService" closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647"> <security mode="Transport" /> </binding> </basicHttpBinding> </bindings> <services> <service behaviorConfiguration="nextSPOTServiceBehavior" name="NextSPOTDownloadManagerWebServiceTester.Web.WebServices.DownloadManagerService"> <endpoint binding="basicHttpBinding" bindingConfiguration="SecureBasic" name="basicHttpSecure" contract="NextSPOTDownloadManagerWebServiceTester.Web.WebServices.IDownloadManagerService" />   </service> </services > </system.serviceModel> </configuration>

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WPF DataGrid populating blank rows on TreeView's SelectedItemChanged

- by jes9582

When my DataGrid populates on the TreeView's SelectedItemChanged event it finds the objects and creates the rows accordingly but the rows populate with no text or are just blank. So I know it is finding my objects but it is not displaying them properly. Does anyone see where I made an error or suggest any changes or fixes? Thank you in advance! Here is the CSharp code that is setting the DataGrid's ItemsSource (I am using .dbml and LINQ with Lambda expressions): dgSystemSettings.ItemsSource = (tvSystemConfiguration.SelectedItem as SYSTEM_SETTINGS_GROUP).SYSTEM_SETTINGS_NAMEs.Join(ssdc.SYSTEM_SETTINGS_VALUEs, x => x.SSN_ID, y => y.SSV_SSN_ID, (x, y) => new { SYSTEM_SETTINGS_NAME = x, SYSTEM_SETTINGS_VALUE = y }); And here is the .xaml: <DataGrid Name="dgSystemSettings" AutoGenerateColumns="False" Height="447" Width="513" DockPanel.Dock="Right" ItemsSource="{Binding}" VerticalAlignment="Top" Margin="10,10,0,0"> <DataGrid.Columns> <DataGridTextColumn x:Name="colDisplayName" Header="Name" Binding="{Binding SSN_DISPLAY_NAME}"></DataGridTextColumn> <DataGridTextColumn x:Name="colValue" Header="Value" Binding="{Binding SSV_VALUE}"></DataGridTextColumn> </DataGrid.Columns> </DataGrid>

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Limiting the width of a TextBlock in Silverlight

- by Druzil

The obvious MaxWidth gets ignored and the text in the "DisplayBox" TextBlock displays the whole text even if this text continues past the parent container controls (to the edge of the silverlight area. <win:HierarchicalDataTemplate x:Key="hierarchicalTemplate" ItemsSource="{Binding _children}"> <Border BorderThickness="0" BorderBrush="Orange" HorizontalAlignment="Stretch" Background="{Binding Converter={StaticResource BackgroundConverter}}"> <toolkit:DockPanel LastChildFill="True" Width="{Binding HeirarchyLevel, Converter={StaticResource WidthConverter}}" Height="20"> <Canvas toolkit:DockPanel.Dock="Right" Width="20" MouseLeftButtonUp="Arrow_MouseLeftButtonDown"> <Rectangle Width="20" Height="20" Fill="Transparent" /> <Line Stroke="Black" X1="5" Y1="10" X2="17" Y2="10" /> <Line Stroke="Black" X1="11" Y1="5" X2="17" Y2="10" /> <Line Stroke="Black" X1="11" Y1="15" X2="17" Y2="10" /> </Canvas> <Ellipse Canvas.Top="5" Width="10" Height="10" Fill="Green" toolkit:DockPanel.Dock="Right" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" /> <Canvas Width="Auto" Loaded="TextArea_Loaded"> <TextBlock Name="DisplayBox" FontFamily="Arial" FontSize="17" Foreground="Black" Width="Auto" Text="{Binding TaskName}" MouseLeftButtonUp="TextBlock_MouseLeftButtonUp" /> <TextBox Name="EditBox" FontFamily="Arial" FontSize="10" Foreground="Black" Height="20" Text="{Binding TaskName}" Visibility="Collapsed" LostFocus="TextBox_LostFocus" /> <Line Stroke="Black" X1="0" Y1="10" X2="202" Y2="10" Width="Auto" /> </Canvas> </toolkit:DockPanel> </Border> </win:HierarchicalDataTemplate>

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Can I enable PreviewClick using InputBindings in WPF?

- by No hay Problema

I want to detect when a user clicks on an item on a listview, without using events as I do command binding and I don't like all the nonsense of the behaviours. I have tried this: <ListView x:Name="MainList" Margin="2,8,6,8" Background="Black" ItemsSource="{Binding Path=AssetsVM.Data, Mode=OneWay}" BorderBrush="{x:Null}" > <ListView.InputBindings> <MouseBinding Command="{Binding Path=AssetsVM.SelectActivo}" CommandParameter="{Binding ElementName=MainList, Path=SelectedItem}" MouseAction="LeftClick" /> </ListView.InputBindings> This works fine if I click on the listview but does not work on the items, what I need is either a way to enable "Preview" or have a MouseAction/Gesture that behaves as preview, is it possible? Thanks

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Populate two column grid with databinding?

- by Richard

How do i populate a two column grid with objects from my observable collection? I've tried to achieve this effect by using the tookits wrap panel but the items just stack. <toolkit:WrapPanel Margin="5,0,0,0" Width="400"> <ItemsControl ItemsSource="{Binding Trips}"> <ItemsControl.ItemTemplate> <DataTemplate> <StackPanel Height="236" Width="182"> <Button Style="{StaticResource VasttrafikButtonTrip}"> <StackPanel Width="152" Height="140"> <TextBlock Text="{Binding FromName}" /> <TextBlock FontFamily="Segoe WP Semibold" Text="till" /> <TextBlock Text="{Binding ToName}" /> </StackPanel> </Button> <TextBlock HorizontalAlignment="Left" Width="160" FontSize="16" FontWeight="ExtraBlack" Text="{Binding TravelTimeText}" /> <TextBlock HorizontalAlignment="Left" Width="160" Margin="0,-6,0,0" FontSize="16" Text="{Binding TransferCountText}" /> </StackPanel> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> </toolkit:WrapPanel>

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