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  • Silverlight TabControl - Finding and selecting a TabItem from a given Control in the TabItem.

    - by David Gray Wright
    I am building a LOB application that has a main section and a TabControl with various TabItems in it. On hitting save the idea is that any fields in error are highlighted and the first field in error gets the focus. If the first, and only, field in error is on an Unselected tab the tab should then become selected and the field in error should become highlighted and have focus. But I can not get this to work. What appears to be happening is that the Unselected tab is not in the visual tree so you can't navigate back to the owning TabItem and make it the currently selected TabItem in the TabControl. Has anyone got an idea on how this can be done\achieved?

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  • WPF/Silverlight AutoCompleteBox with ability to add new values to list.

    - by WillH
    Hi, I would like to use autocompletebox with a list of values, but also add new values to the list if a user enters one that isn't present. I currently have a string property in my view model called 'Comment'. Currently this is bound to a textbox in the view - user types a comment and the view model is updated. Simple. To save time, my customer would like it to autocomplete from previous values, so the way I thought to do this is something like: ViewModel public string Comment; public ObservableCollection<string> CommentsList { ... } (populate the CommentsList when the viewmodel is created) View <AutoCompleteComboBox ItemsSource="{Binding CommentsList}" SelectedItem="{Binding Comment, Mode=TwoWay/> So when the user selects a value, it saves the value in the Comment property. This works fine if the user selects an item in the list, but if the user types in a new value, the comment property is not updated (it is null because the selected item was not in the list). Is this possible with autocompletebox? Thanks in advance, Will

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  • Silverlight - how to render image from non-visible data bound user control?

    - by MagicMax
    Hello! I have such situation - I'd like to build timeline control. So I have UserControl and ItemsControl on it (every row represents some person). The ItemsControl contains another ItemsControl as ItemsControl.ItemTemplate - it shows e.g. events for the person arranged by event's date. So it looks as some kind of grid with dates as a column headers and e.g. peoples as row headers. ........................|.2010.01.01.....2010.01.02.....2010.01.03 Adam Smith....|......[some event#1].....[some event#2]...... John Dow.......|...[some event#3].....[some event#4]......... I can have a lot of persons (ItemsControl #1 - 100-200 items) and a lot of events occured by some day (1-10-30 events per person in one day) the problem is that when user scrolls ItemsControl #1/#2 it happened toooo sloooooowwww due to a lot of elements should be rendered in one time (as I have e.g. a bit of text boxes and other elements in description of particular event) Question #1 - how can I improve it? May be somebody knows better way to build such user control? I have to mention that I'm using custom Virtual panel, based on some custom Virtual panel implementation found somewhere in internet... Question #2 - I'd like to make image with help of WriteableBitmap and render data bound control to image and to show image instead of a lot of elements. Problem is that I'm trying to render invisible data bound control (created in code behind) and it has actualWidth/Height equals to zero (so nothing rendered). How can I solve it? Thank you very much for you help!

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  • Why does this C# event handler not respond to this event in this Silverlight application?

    - by Edward Tanguay
    Can anyone tell me why the following code successfully executes this event: OnLoadingComplete(this, null); but never executes this event handler? void initialDataLoader_OnLoadingComplete(object obj, DataLoaderArgs args) CODE: using System; using System.Collections.Generic; using System.Linq; using System.Windows.Controls; using System.Diagnostics; namespace TestEvent22928 { public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); DataLoader initialDataLoader = new DataLoader("initial"); initialDataLoader.RegisterText("test1", "http://test:111/testdata/test1.txt"); initialDataLoader.RegisterText("test2", "http://test:111/testdata/test2.txt"); initialDataLoader.BeginLoading(); initialDataLoader.OnLoadingComplete += new DataLoader.LoadingComplete(initialDataLoader_OnLoadingComplete); } void initialDataLoader_OnLoadingComplete(object obj, DataLoaderArgs args) { Debug.WriteLine("loading complete"); //WHY DOES EXECUTION NEVER GET HERE? } } public class DataManager { public DataLoader CreateDataloader(string dataloaderIdCode) { DataLoader dataLoader = new DataLoader(dataloaderIdCode); return dataLoader; } } public class DataLoader { public string IdCode { get; set; } public List<DataItem> DataItems { get; set; } public delegate void LoadingComplete(object obj, DataLoaderArgs args); public event LoadingComplete OnLoadingComplete = delegate { }; private int dataItemCurrentlyLoadingIndex; public DataLoader(string idCode) { IdCode = idCode; DataItems = new List<DataItem>(); dataItemCurrentlyLoadingIndex = -1; } public void RegisterText(string idCode, string absoluteSourceUrl) { DataItem dataItem = new DataItem { IdCode = idCode, AbsoluteSourceUrl = absoluteSourceUrl, Kind = DataItemKind.Text }; DataItems.Add(dataItem); } public void BeginLoading() { LoadNext(); } private void LoadNext() { dataItemCurrentlyLoadingIndex++; if (dataItemCurrentlyLoadingIndex < DataItems.Count()) { DataItem dataItem = DataItems[dataItemCurrentlyLoadingIndex]; Debug.WriteLine("loading " + dataItem.IdCode + "..."); LoadNext(); } else { OnLoadingComplete(this, null); //EXECUTION GETS HERE } } } public class DataItem { public string IdCode { get; set; } public string AbsoluteSourceUrl { get; set; } public DataItemKind Kind { get; set; } public object DataObject { get; set; } } public enum DataItemKind { Text, Image } public class DataLoaderArgs : EventArgs { public string Message { get; set; } public DataItem DataItem { get; set; } public DataLoaderArgs(string message, DataItem dataItem) { Message = message; DataItem = dataItem; } } }

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  • How to become sharepoint developer from ASP.NET/Silverlight developer?

    - by funwithcoding
    Hello friends, I heard from my peers that knowledge of sharepoint is going to be good for career. We do not use sharepoint at our office. So dont know how to get started. These are my sharepoint newbie questions Is learning sharepoint worth the effort? Where are the resources to learn sharepoint? Is there any reference project I should considering aiming to develop? Appreciate your inputs.

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  • How do you align text so it is in the middle of a button in Silverlight?

    - by Roy
    Here is the current code I am using: <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="ButtonPrototype.MainPage" Width="640" Height="480"> <UserControl.Resources> <ControlTemplate x:Key="CellTemplate" TargetType="Button"> <Grid> <Border x:Name="CellBorderBrush" BorderBrush="Black" BorderThickness="1"> <ContentPresenter Content="{TemplateBinding Content}" HorizontalAlignment="Center" VerticalAlignment="Center"/> </Border> </Grid> </ControlTemplate> <Style x:Key="CellStyle" TargetType="Button"> <Setter Property="Template" Value="{StaticResource CellTemplate}"></Setter> <Setter Property="Foreground" Value="Black"></Setter> <Setter Property="FontSize" Value="80"></Setter> <Setter Property="Width" Value="100"></Setter> <Setter Property="Height" Value="100"></Setter> </Style> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White"> <Button Content="A" Style="{StaticResource CellStyle}"></Button> </Grid> </UserControl> The Horizontal aligning works but the verticalalignment doesn't do anything. Thanks for your help.

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  • Set property on usercontrol that can be used in custom panel in control... Silverlight

    - by Dimestore Cowboy
    I have a simple usercontrol that uses a simple custom panel where I just overrode the Orientation and Measure functions. What I want to do is to have a property in the usercontol to control the orientation So I basicaly have UserControl -- Listbox -- MyPanel And I want a property for the usercontrol that can be set in xaml (of type System.Windows.Controls.Orientation ) that I can bind to from my custom panel (or a different approach if binding isnt the right way to do it) It would be a bonus if that property could show up in the properties window and you could select vertical or horizontal. And a super bonus if I could change the property at design time and have the listbox/

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  • How to set uri for local image in silverlight app?

    - by KentZhou
    In SL class library MyLib, I have a image say my.png. Then I want to use it in code behind I tried following way: StreamResourceInfo resourceStream = Application.GetResourceStream(new Uri("/MyLib;component/my.png", UriKind.Relative)); BitmapImage image = new BitmapImage(); image.SetSource(resourceStream.Stream); this.MyIcon.Source = image; But it's not woking. I think it's the Uri not set correctly. Help please.

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  • How can a ListBoxItem property be set in Silverlight at runtime?

    - by sympatric greg
    Given this XAML, I need to resize the userControl in response to user input. How can I set a new width for ListBoxItem (or perhaps the StackPanel)? <ScrollViewer x:Name="ScrollViewer" Margin="0" BorderBrush="Transparent" Width="165" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Hidden"> <ListBox x:Name="AttributeListBox" ItemsSource="{Binding Attributes}" BorderBrush="Red" Width="160" Foreground="AntiqueWhite" Background="Transparent" IsEnabled="False" HorizontalAlignment="Stretch"> <ListBox.ItemContainerStyle> <Style TargetType="ListBoxItem"> <Setter Property="HorizontalAlignment" Value="Stretch"/> <Setter Property="Width" Value="150"/> <Setter Property="Margin" Value="0,-2,0,0"/> <Setter Property="HorizontalContentAlignment" Value="Left" /> <Setter Property="Template" Value="{StaticResource ListBoxItemSansFocus}" /> </Style> </ListBox.ItemContainerStyle> <ListBox.ItemTemplate> <DataTemplate> <StackPanel x:Name="ListBoxItemStackPanel" HorizontalAlignment="Stretch" Orientation="Vertical" > <TextBlock FontSize="10" Text="{Binding Key}" Foreground="White" FontWeight="Bold" HorizontalAlignment="Stretch" Margin="2,0,0,0" TextWrapping="Wrap"/> <TextBlock FontSize="10" Text="{Binding Value}" Foreground="White" Margin="6,-2,0,0" TextWrapping="Wrap"/> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> </ScrollViewer>

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  • Binding a Value from a View-Model to the View-Model of a child User Control in Silverlight?

    - by andrej351
    Hi there, So i have a UserControl for one of my Views and have another 'child' UserControl inside that. The outer 'parent' UserControl has a Collection on its View-Model and a Grid control on it to display a list of Items. I want to place another UserControl inside this UserControl to display a form representing the details of one Item. The outer / parent UserControl's View-Model already has a property on it to hold the currently selected Item and i would like to bind this to a DependancyProperty on the inner / child UserControl. I would then like to bind that DependancyProperty to a property on the child UserControl's View-Model. I can then set the DependancyProperty once in XAML with a binding expression and have the child UserControl do all its work in its View-Model like it should. The code i have looks like this.. Parent UserControl: <UserControl x:Class="ItemsListView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding Source={StaticResource ServiceLocator}, Path=ItemsListViewModel}"> <!-- Grid Control here... --> <ItemDetailsView Item="{Binding Source={StaticResource ServiceLocator}, Path=ItemsListViewModel.SelectedItem}" /> </UserControl> Child UserControl: <UserControl x:Class="ItemDetailsView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding Source={StaticResource ServiceLocator}, Path=ItemDetailsViewModel}" ItemDetailsView.Item="{Binding Source={StaticResource ServiceLocator}, Path=ItemDetailsViewModel.Item, Mode=TwoWay}"> <!-- Form controls here... --> </UserControl> The selected Item is bound to the DependancyProperty fine. However from the DependancyProperty to the child View-Model does not. I've used this sort of apporach in a WPF app without problems. It appears to be a situation where there are two concurrent bindings which need to work but with the same target for two sources. Why won't the second (in the child UserControl) binding work?? Is there a way to acheive the behaviour I'm after?? Cheers.

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  • How to access a grid inside of a RichTextBox in Silverlight 4?

    - by benrick
    I am trying to allow a user to create a table inside of a RichTextBox. I can create a Grid inside of the RichTextBox, but I am having some issues with it. I start with this XAML in the Grid. <RichTextBox Name="TB1" AcceptsReturn="True"> <Paragraph TextAlignment="Center"> Hi everybody </Paragraph> <Paragraph> <InlineUIContainer> <Grid Background="Black"> <Grid.RowDefinitions> <RowDefinition Height="10" /> <RowDefinition Height="10" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="10" /> <ColumnDefinition Width="10" /> </Grid.ColumnDefinitions> </Grid> </InlineUIContainer> </Paragraph> <Paragraph> How are you today? </Paragraph> </RichTextBox> Then when I get the XAML out using the Xaml property of the RichTextBox I get this XAML. <Section xml:space="preserve" HasTrailingParagraphBreakOnPaste="False" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"> <Paragraph FontSize="11" FontFamily="Portable User Interface" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Center"> <Run Text="Hi everybody" /> </Paragraph> <Paragraph FontSize="11" FontFamily="Portable User Interface" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Left"> <Run /> </Paragraph> <Paragraph FontSize="11" FontFamily="Portable User Interface" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Left"> <Run Text="How are you today?" /> </Paragraph> </Section> Notice here that the Grid has turned into an empty Run element. Anyone know why this happens?

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  • Can you set a gradient brush for a listboxitem background in silverlight?

    - by Michael
    I am looking for a way to set a gradientbrush as the background for a listbox item. I have a DataTemplate defined and have specified a gradient brush but it always appears as the listbox background (i.e. it never shows as a gradient brush). I have been able to set the background of the listbox itself, and I can set the listboxitem's background to a standard color using the "setter" object....but none of these are what I am after. I really want the background on each list item to be a gradient brush. Below is the datatemplate that I have constructed. <ListBox Name="MyListBox" Margin="12,67,12,169"> <ListBox.ItemTemplate> <DataTemplate> <Grid Height="51" VerticalAlignment="Bottom"> <Grid.Background> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="#FFC9F4D0"/> <GradientStop Color="#FF2AC12A" Offset="0.333"/> <GradientStop Color="#FF35DE35" Offset="1"/> </LinearGradientBrush> </Grid.Background> <Canvas > <dataInput:Label Width="227" Foreground="Yellow" Canvas.Left="158" Canvas.Top="8" Content="{Binding Place}"/> <dataInput:Label Width="146" Foreground="Yellow" Canvas.Left="8" Canvas.Top="8" Content="{Binding Date}"/> <dataInput:Label Content="{Binding People}" Width="346" FontSize="9.333" Foreground="Black" Canvas.Left="166" Canvas.Top="28"/> <!-- <dataInput:Label Width="45" Content="Accept" Foreground="White" Canvas.Left="8" Canvas.Top="28"/> <dataInput:Label Width="45" Content="Decline" Foreground="White" Canvas.Left="57" Canvas.Top="28"/> --> <dataInput:Label Content="SomeText" Width="101" FontSize="9.333" Foreground="White" Canvas.Left="389" Canvas.Top="10"/> <Image Height="21" Width="21" Canvas.Left="500" Canvas.Top="8" Source="Green Button.png"/> </Canvas> </Grid> </DataTemplate> </ListBox.ItemTemplate> </ListBox> Any Thoughts?

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  • Silverlight: How can I built an overview display block for any XAML?

    - by Ryan Bates
    Hi all, I am trying to create a generic "overview" control for any XAML. A good example of the desired effect would be on Google Maps or Bing maps: The main map zooms into some content, while a small "overview" block is docked to one of the map corners, showing the user where he/she is zoomed into. My content is all placed inside a <Canvas>, which can then be scaled and zoomed with transforms. While the user does this kind of navigation, I would like to give them a visual indication of where they are in the larger context of the content. I have tried to take a 'screenshot' of the XAML before the user starts navigating, i.e. create a WriteableBitmap wbImageData = new WriteableBitmap(TheCanvas, null); and then displaying it in an Image. Based on the user's scrolling and zooming activity, a Rectangle displays which part of the content is currently visible in the display area. This works OK-ish (still clunky), but the image has to be redone everytime the content changes. Is there a simple way to create this kind of preview, or does anyone know of a component that does it? Thanks!

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  • How to resize a silverlight control to a full webpage.

    - by ForeverDebugging
    I'm currently using a datagrid within a user control. The datagrid resizes based on the number of rows, and therefore goes off the webpage. I've tried wrapping the control around a ScrollViewer, but in order to have the scroll bar visible and working, I need to set the MaxHeight of the datagrid. The problem is that I don't know what the MaxHeight of the datagrid should be because it differs based on the size of the browser window appearing on the screen. Any suggestions on how to determine the correct size of the control?

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  • Silverlight : How to pass data from the reqest to the respose using Webclient Asychronous mode ?

    - by user318332
    This is probably a basic question .. void method1() { String VIP = "test"; WebClient proxy = new WebClient(); proxy.OpenReadCompleted += new OpenReadCompletedEventHandler(proxy_OpenReadCompleted); String urlStr = "someurl/lookup?q=" + keyEntityName + "&fme=1&edo=1&edi=1"; } void proxy_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e) { } I need to access VIP in the proxy_OpenReadCompleted method. Pl. help

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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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  • Do I need a view controller for MVVM-light in Silverlight?

    - by Stefan de Vogelaere
    I have the following question regarding MVVM light: what "drives" the UI? I see I can have a ViewModel per View I am showing; the ViewLocator handles all the ViewModels (for caching as I understand). But what is driving the UI? If I have a Command defined in my ViewModel that says "ShowDetail"; do I have to write the code for displaying this View inside the ViewModel? Are there any examples of this? Thanks!

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