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  • List<string> doesn't update the UI when change occurs [WPF]

    - by Hard Turner
    <ListBox x:Name="MainList" HorizontalAlignment="Left" Height="468" Margin="10,10,0,0" VerticalAlignment="Top" Width="100" ItemsSource="{Binding Items,Mode=TwoWay}" DisplayMemberPath="Name"/> [Serializable()] public class MYcontainer : INotifyPropertyChanged,ISerializable { private List<MYClass> _items = new List<MYClass>(); public List<MYClass> Items { get{ return _items;} set { this._items =value; OnPropertyChanged("Items"); } public event PropertyChangedEventHandler PropertyChanged; public void OnPropertyChanged(string propertyName = null) { var eventHandler = this.PropertyChanged; if (eventHandler != null) eventHandler(this, new PropertyChangedEventArgs(propertyName)); } } when i add an item to "Items" the UI doesnt update, the binding is working fine, since if i closed the window and opened it again, the new items appear correctly what am i doing wrong? i know if i used observablecollection it will work fine, but shouldn't it work with List<? , i already have in another window a string[] property and it update fine

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  • Binding Listbox item source to a collection of collections in windows phone 7

    - by Tee
    Hi there, I am trying to bind a Listbox ItemSource to a collection of multiple Lists. i.e. List PersonCollection List Person List Collection Now I need to show items from both of these list. In wpf you could use HierarchicalDataTemplate i believe, but not sure how I can do it in windows phone 7. Tried with Blend and it generates the following data template. <DataTemplate x:Key="PersonDataTemplate"> <Grid> <StackPanel Margin="0,0,1,0" Orientation="Vertical" VerticalAlignment="Top"> <TextBlock Margin="0,0,1,0" TextWrapping="Wrap" Text="{Binding Person[0].Name}" d:LayoutOverrides="Width"/> <TextBlock Margin="0,0,1,0" TextWrapping="Wrap" Text="{Binding Collection[0].Total}" d:LayoutOverrides="Width"/> </StackPanel> </Grid> </DataTemplate> Is there another way I can do this? I have tried to set the DataContext of Textbox in DataTemplate to individual arrays but did not seem to work. Cant find anything similar on the net apart from the confirmation that HierarchicalDataTemplate is not supported in Windows Phone 7. I have other ways to do but none elegant.. Thanks in advance. Regards

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  • wpf app invisible remotely (via radmin)

    - by SteveCav
    hi gang, I've built a little WPF utility that watches a serialport and visualises monitoring information with WPF. It works fine, but a colleague just tried using it from another machine via radmin and my app is completely invisible! if you're at the machine you see it, if you view it via radmin you see the same screen but no app. Instead you see the app behind it (in this case windows explorer), but can't click on anything in the space where my app is. Has anyone else come across this before??

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  • How do I create a clicked state in a SIlverlight button?

    - by Roy
    How do I create a clicked state in visual state manager for a control that is based on a button control? I tried using a pressed state but once the mouse button is released it reverts back to the original color. I would like to change the color of the button when it is clicked on. I am not looking for a solution in the click event handler because this is a part of a template. Thank you

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  • How to get the Grid.Row Grid.Column from the selected added control?

    - by younevertell
    How to get the Grid.Row Grid.Column from the added control? Basically I have 16 grids with 4 rows and 4 columns, each grid is added a round button. how to determine which rows and columns the selected round buttons are located respectively in the below MouseEventHandler of mouseover? For mouseclick, there is only round button selected, but for mouseover, there would be a collection of buttons. RoundButton_MouseEnter, RoundButton_MouseLeave, RoundButton_MouseDown, RoundButton_MouseUp Thanks

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  • Making a moveable control in WPF

    - by Dave Colwell
    Hi guys, I have a panel, within that panel are several rectangular controls (the number of controls vaires) I want the user to be able to move the controls around within the panel so that they can arrange the controls in the way that suits them best. does anyone have any resources i could read or simple tips which would get me headed down the right road?

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  • how to get TabHeader on trigger

    - by CurlyFro
    i have a tabcontrol. i'm trying to pass the tabcontrol as a parameter to figure out the selected tab item so i can get the tab header name. Binding this doesn't seem to work. ideas? <TabControl Background="#FFF9F9F9" Height="650"> <i:Interaction.Triggers> <i:EventTrigger EventName="SelectionChanged"> <n:ExecuteCommandAction Command="{Binding UpdateTabCommand}" Parameter="{Binding this}"/> </i:EventTrigger> </i:Interaction.Triggers> in my viewmodel constructor i have: _updateTabCommand = new ActionCommand< TabControl>(UpdateTab); private method: public void UpdateTab(TabControl tabControl) { var tabItem = (TabItem)tabControl.SelectedItem;

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  • WP7 help with menu effects

    - by MattMacdonald
    Kinda new to Silverlight and have some experience with WPF but I'm doing a project with a group for a class making a game for WP7. I am currently in charge of the menu system for the game and I had a few ideas for "flashy" menu transitions. I got some going for the main menu but I wanted to do something cool for the options submenu. Anyway my idea is to either fashion an expander or to have sort of a variation of a dialog box. But the way I envisioned it would be in either case the menu items blur but are still visible while the expanded menu is displayed or while the dialog is active. If I'm being confusing sorry :) but think of Windows 7 glass effect on the menu while other options are available. What I'm getting at is I want to give this a shot but I have no idea how I would go about doing something like this. Could anyone point me in the right direction or outline some key steps for me to build off? I tried finding something like this on Google but no such luck.

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  • Sharing state/changes across ViewModels

    - by joshperry
    I have an App which has a Tasks tab and a Projects tab. I decided to make a separate ViewModel for each of the tabs, TasksViewModel and ProjectsViewModel. The Tasks tab has a new task area with an associated project pulldown and the Projects tab (obviously) has a list of projects. What I'd like is for the pulldown on the Tasks tab to share the same collection as the Projects tab list so that any time I add or remove a project on the Projects tab the list on the Tasks tab is up to date automatically. This worked well with a single ViewModel but it was beginning to become quite unruly. Should I not have split into two ViewModels? Is there a common method of sharing data like this? Perhaps pass the same ObservableCollection<Project> into each of the ViewModels? Perhaps some type of notification back to the TasksViewModel along the lines of ICollectionChanged. Appreciate any insight/input!

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  • Trouble applying a simple template

    - by Adam S
    I'm having trouble applying a template to my checkboxes. I have the following template: <ControlTemplate x:Key="TriStateRed" TargetType="{x:Type CheckBox}"> <ControlTemplate.Triggers> <Trigger Property="IsChecked" Value="{x:Null}" > <Setter TargetName="path" Property="Data" Value="M 0 2.5 A 5 2.5 0 1 1 5 5 L 5 8 M 5 10 L 5 10" /> <Setter TargetName="path" Property="Stroke" Value="Red" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> However, visual studio gives me the following error: Cannot find the Trigger target 'path'. (The target must appear before any Setters, Triggers, or Conditions that use it.) Can anyone make sense of this?

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  • Binding lineargradientbrush color with property

    - by user1629894
    I have a problem with color in gradientstop. I want binding offset color with my property that return color (System.Windows.Media), but not working and return defalt color Transparent. If binding same property with Foreground Label is working. This style is in ResourceDictionary. <Style TargetType="{x:Type TabControl}"> <Setter Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0 0" EndPoint="0 1"> <LinearGradientBrush.GradientStops> <GradientStop Offset="0.1" Color="Black" /> <GradientStop Offset="1" Color="{Binding Path=MyColor}" /> </LinearGradientBrush.GradientStops> </LinearGradientBrush> </Setter.Value> </Setter> </Style> and it's working: <Style TargetType="{x:Type Label}"> <Setter Property="Foreground" Value="{Binding Path=MyColor, Converter={StaticResource ColorToBrush}}" /> </Style> my property is: public Color MyColor { set { myColor = value; NotifyPropertyChanged("MyColor"); } get { return myColor; } } Thank you everybody for answers

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  • How to have a user control as a ListBoxItem

    - by Harry
    I want to bind a user control (View) to a ListBoxItem. The ListBox is bound to a collection of ViewModels. I have set the ListBox's ItemTemplate as so: <ListBox.ItemTemplate> <DataTemplate> <View:ContactView/> </DataTemplate> </ListBox.ItemTemplate> But all I get are blank ListBoxItems. I can click on them, but nothing is showing visually. My ContactView code is very simply: <Border> <DockPanel> <StackPanel DockPanel.Dock="Right" Orientation="Vertical"> <TextBlock Text="{Binding Path=ContactFirstName, FallbackValue=FirstName}" FontWeight="Bold" Margin="5, 0, 5, 0"></TextBlock> <TextBlock Text="{Binding Path=ContactLastName, FallbackValue=LastName}" FontWeight="Bold" Margin="5, 0, 5, 0"></TextBlock> <TextBlock Text="{Binding Path=ContactNumber, FallbackValue=Number}" Margin="5, 0, 5, 0"></TextBlock> </StackPanel> </DockPanel> </Border> What could be wrong with this? Thanks.

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  • Binding in ContentControl Crash

    - by ImJames
    Can anyone tell me why this crashes my app? There seems to be some endless recursion by I can't figure out why. I get this exception Logical tree depth exceeded while traversing the tree. This could indicate a cycle in the tree <ContentControl Content="{Binding}"> <ContentControl.ContentTemplate> <DataTemplate> <Button Content="{Binding MyString}"/> </DataTemplate> </ContentControl.ContentTemplate> </ContentControl> And this is all I have as Source public MainWindow() { InitializeComponent(); MyString = "Test"; this.DataContext = this; } public string MyString { get; set; }

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  • How to remove the shadow from a librarystack

    - by red-X
    I'm currently in a project where I need a LibraryStack with no visuals at all, so it would just show the content. If I just remove the background a shadow stays in view which I cant seem to remove... This code looks like: <s:LibraryStack Background="Transparent"> <s:LibraryStackItem Background="AliceBlue"/> <s:LibraryStackItem Background="Bisque"/> <s:LibraryStackItem Background="Salmon"/> </s:LibraryStack> This stack is just for explaining purposes, the actual stack is added in the code behind in c#. So preferably any answers that would be usefull to add in c#.

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  • Can I get a WPF ListBox to inherit brushes from parent element?

    - by Jay
    My WPF window has its foreground brush set to a brush from a resource dictionary, and I want all text in the window to have this color, so I don't touch the foreground brush in anything else. Textboxes get the color Textblocks get the color Buttons get the color Listboxes do not get the color, and so neither do their contents. Is there any way to get a Listbox to behave like the other controls in this respect? Assuming not, and that this is by design, what is the rationale?

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  • Choosing right control for list of items

    - by prostynick
    I am new to WPF and MVVM. In my ViewModel I have collection of items, for example: class Item { string Title {get; set;} string Description {get; set;} } I would like to create a view, so at the beginning I would have: Title1 Title2 Title3 If user click on one of title it will expand to show description, eg: Title1 Description1 Title2 Title3 If user click on other title, there will be two expanded items: Title1 Description1 Title2 Description2 Title3 This is probably very similar to Expander control and maybe I could use it, but I am doing it other way, to learn something new. What control should I use for this purpose? Should that be ItemsControl or maybe ListBox? I imagine, that if I use ItemsControl, I should probably extend my Item class to have something like bool IsExpanded and bind UI item visibility to that value. But maybe I could use ListBox and somehow bind UI item visibility to... Yeah, to what? :) How could I do such a simple thing?

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  • Silverlight: Binding to a LayoutRoot value from within a DataTemplate

    - by Rosarch
    I have a DataTemplate for a ListBox, where I have several controls that bind to an item. I would also like to bind to a value on LayoutRoot.DataContext. I'm unsure of how to do this. <!--LayoutRoot is the root grid where all page content is placed--> <StackPanel x:Name="LayoutRoot" Background="Transparent"> <ListBox ItemsSource="{Binding Items}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding}" /> <TextBlock Text="{Binding ElementName=LayoutRoot, Path=DataContext.Foo}" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> </StackPanel> public partial class MainPage : PhoneApplicationPage { public string Foo { get { return "the moon"; } } private int startIndex = 1; private IList<string> _data = new List<string>() { "foo", "bar", "baz" }; public IList<string> Items { get { return _data; } } // Constructor public MainPage() { InitializeComponent(); LayoutRoot.DataContext = this; } } This doesn't work; only the _data items are displayed. The following binding errors appear in the Debug output: System.Windows.Data Error: BindingExpression path error: 'Foo' property not found on 'foo' 'System.String' (HashCode=1502598398). BindingExpression: Path='DataContext.Foo' DataItem='System.Windows.Controls.Border' (HashCode=78299055); target element is 'System.Windows.Controls.TextBlock' (Name=''); target property is 'Text' (type 'System.String').. System.Windows.Data Error: BindingExpression path error: 'Foo' property not found on 'bar' 'System.String' (HashCode=696029481). BindingExpression: Path='DataContext.Foo' DataItem='System.Windows.Controls.Border' (HashCode=78298703); target element is 'System.Windows.Controls.TextBlock' (Name=''); target property is 'Text' (type 'System.String').. System.Windows.Data Error: BindingExpression path error: 'Foo' property not found on 'baz' 'System.String' (HashCode=696029489). BindingExpression: Path='DataContext.Foo' DataItem='System.Windows.Controls.Border' (HashCode=78298694); target element is 'System.Windows.Controls.TextBlock' (Name=''); target property is 'Text' (type 'System.String').. Do I have a syntax error somewhere? Update I'm aiming for something that looks like this: foo the moon bar the moon baz the moon Instead, all I'm getting is: foo bar baz

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  • How to style "form" field labels in Windows Phone 7?

    - by Jeremy Bell
    Is there any standards guidance on how to style field labels next to form fields in windows phone 7 silverlight applications? For example, let's say I have a StackPanel with the TextBlock label and a TextBox for data entry. Currently I am using the default TextBlock Margin included in the PhoneTextSubtleStyle ("12,0,12,0"), and using a Margin of "0,-12,0,0" to push the TextBox up closer to the label: <StackPanel HorizontalAlignment="Left"> <TextBlock VerticalAlignment="Center" Text="Name" Style="{StaticResource PhoneTextSubtleStyle}" /> <TextBox Text="{Binding ItemName, Mode=TwoWay}" TextChanged="TextBox_TextChanged" VerticalAlignment="Center" Width="433" Margin="0,-12,0,0" /> </StackPanel> Note that the TextBox seems to have some internal padding of 12 pixels to the left and right, so that the TextBlock label and the TextBox control visually line up perfectly on the left. The problem is, I see existing apps with widely varying conventions for field label styling. Some do not do the negative margin adjustment, like I have above. Some don't. Some appear to override the label TextBlock Margin so that it is indented an additional 12 pixels on the left (i.e. "24,0,12,0" instead of the default "12,0,12,0"). Some apps put the labels to the left of the fields themselves (I hate that). Is there some standard design guidance on field labels in Windows Phone 7? I read through the design template PDF and could only determine that the field labels should be upper case on the first word (preferably only one word labels), and should NOT have a colon at the end. I didn't see anything with regards to margins or alignment between the label and the field.

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  • Pattern Brushes in WPF

    - by daub815
    I am struggling with creating various brushes to fill in various shapes or as a background. Here are some patterns I am struggling with creating: <<<< <|<|<|<|||| //////// \\\\ |||||||| I've been able to create the \\\, //////, and |||||| with a linear gradient, but the first two are causing me issues. BTW, the second one is a triangle. Any suggestions or help would be greatly appreciated.

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  • WPF control not being updated when source is changed

    - by Dave Colwell
    Hi, I have a ListBox which is bound to a list of objects. When the system initializes, the binding is done just fine, When i update the value in one of the fields on the ListBox, the item in the background updates as well, but when i update the value in the background it is not reflected in the ListBox. Does anyone know why this is?

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  • Is there a Visual Studio (or freeware) equivalent for Expression Blend's "Edit Template" feature?

    - by DanM
    In Expression Blend, you can view and edit the control template of objects in the "Objects and Timeline" panel. I'm wondering if there's an equivalent feature in Visual Studio or if there's something free (or very inexpensive) I can download that will allow me to do this. Here's a screen cap from Expression Blend that shows what I'm talking about: Doing this for DataGrid results in the following: <Style x:Key="DataGridStyle1" TargetType="{x:Type Custom:DataGrid}"> ... <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Custom:DataGrid}"> ... </ControlTemplate> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="IsGrouping" Value="True"> <Setter Property="ScrollViewer.CanContentScroll" Value="False"/> </Trigger> </Style.Triggers> </Style> (The ... is of course replaced with setters and the contents of the control template.) This is a very useful starting point if you want to create a custom style and template for a control. It seems like you can do pretty much anything you can do in Blend in Studio, but this one is eluding me. Any ideas? Edit I'm also curious if this feature will be in Visual Studio 2010. Anyone know?

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