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  • Bogus WPF / XAML errors in Visual Studio 2010

    - by epalm
    There are bogus errors hanging around, but at runtime everything works. Right now, I'm getting Cannot locate resource 'img/icons/silk/arrow_refresh.png'. I've got a simple UserControl called ImageButton (doesn't everyone?): <UserControl x:Class="WinDispatchClientWpf.src.controls.ImageButton" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" mc:Ignorable="d"> <Button Name="btnButton" Click="btnButton_Click"> <StackPanel Orientation="Horizontal"> <Image Name="btnImage" Stretch="None" /> <TextBlock Name="btnText" /> </StackPanel> </Button> </UserControl> Which does what you'd expect: [ContentProperty("Text")] public partial class ImageButton : UserControl { public String Image { set { btnImage.Source = GuiUtil.CreateBitmapImage(value); } } public String Text { set { btnText.Text = value; } } public double Gap { set { btnImage.Margin = new Thickness(0, 0, value, 0); } } public bool ToolBarStyle { set { if (value) { btnButton.Style = (Style)FindResource(ToolBar.ButtonStyleKey); } } } public bool IsCancel { set { btnButton.IsCancel = value; } } public bool IsDefault { set { btnButton.IsDefault = value; } } public event RoutedEventHandler Click; public ImageButton() { InitializeComponent(); } private void btnButton_Click(object sender, RoutedEventArgs e) { if (Click != null) { Click(sender, e); } } } Where CreateBitmapImage is the following: public static BitmapImage CreateBitmapImage(string imagePath) { BitmapImage icon = new BitmapImage(); icon.BeginInit(); icon.UriSource = new Uri(String.Format("pack://application:,,,/{0}", imagePath)); icon.EndInit(); return icon; } I can't see the design view of any xaml file that uses an ImageButton like such: <Window foo="bar" xmlns:wpfControl="clr-namespace:MyProj.src.controls"> <Grid> <wpfControl:ImageButton ToolBarStyle="True" Gap="3" Click="btnRefresh_Click" Text="Refresh" Image="img/icons/silk/arrow_refresh.png" /> </Grid> </Window> Why is VS complaining?

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  • WPF Trigger when Property and Data value are true

    - by KrisTrip
    I need to be able to change the style of a control when a property and data value are true. For example, my bound data has an IsDirty property. I would like to change the background color of my control when IsDirty is true AND the control is selected. I found the MultiTrigger and MultiDataTrigger classes...but in this case I need to somehow trigger on data and property. How can I do this?

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  • Memory leak with WPF & ItemsControl (VB.NET)

    - by Matt H.
    I have an ItemsControl that uses a DataTemplate to display properties in my customClass that implements INotifyPropertyChanged... Pretty straightforward... Some items in the DataTemplate use CommandBindings (such as buttons), and a few have some code-behind (yuck). When I empty the ItemsControl and set all instances of customClass = Nothing , no memory is released from my program. This becomes a problem pretty quickly! Any idea where I should start looking? I've even gone so far as to completely traverse the visual tree of each DataTemplate instance and set each Visual = Nothing. I'm not really if that's supposed to have any effect though.

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  • WPF Multiline TextBlock LineBreak issues

    - by KMC
    I have the following code txtBlock1.Inlines.Add("This is first paragraph \n This is second paragraph"); then TextBlock would display: This is first paragraph This is second paragraph But, if I have the following (which I though is equivalent); txtBlock1.Inlines.Add("This is first paragraph"); txtBlock1.Inlines.Add("\n"); txtBlock1.Inlines.Add("This is second paragraph"); TextBlock display: This is first paragraph // but second paragraph missing If I separate out the linebreak then the rest of text after the linebreak doesn't show. Why? I have to use run: Run run1 = new Run(); run1.Text = "First Paragraph"; run1.Text += "\n"; run1.Text += "Second Paragraph"; txtBlock1.Inlines.Add(run1); Then it produce the result correctly. Why I cannot add inline text to Textblock and require me to use Run?

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  • WPF WebBrowser, unable to run Javascript and applet in Popups windows

    - by Fede
    Hello All, I have a desktop application that has a control with a WebBrowser control inside. Everything works fine except with Siebel CMR popups. When it opens a new popup , Siebel tries to load an applet in the popup window but it doesn't work , it works fine in the main browser. This works perfectly with IE also. It seems to be related to some security setting but i am quite lost. Does anyone know if there is any way to modify or check the security when a new popup is opened? Thanks in advance! Fede

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  • WPF: Order of stretch sizing

    - by RFBoilers
    I'm creating a modal dialog window which contains three essential parts: a TextBlock containing instructions, a ContentControl for the dialog panel, and a ContentControl for the dialog buttons. Each of these parts are contained in a separate Grid row. I have some specific constraints when it comes to how the dialog should be sized. The issue I'm having is with the instructions TextBlock. I want the instructions to be as wide as the ContentControl for the dialog panel. The instructions should then wrap and grow vertically as needed. Should the instructions not be able to grow vertically, then it should begin to grow horizontally. Getting the instructions to be the width of the ContentControl and grow vertically was simple. The part I can't seem to figure out is how to get it to grow horizontally when out of vertical space. My initial thought was to create a class that extends TextBlock and override MeasureOverride. However, that method is sealed. Currently, I'm playing with the idea of have the dialog Window override MeasureOverride to calculate the available size for the instructions block. Am I missing a much simpler way of accomplishing this? Does anyone have any better ideas than this? Messing with MeasureOverride seems like it will be a lot of work. Here is some sample code to give you a general idea of how the dialog is laid out: <Window x:Class="Dialogs.DialogWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="dialogWindow" ShowInTaskbar="False" WindowStyle="None" AllowsTransparency="True" Background="Transparent" ResizeMode="NoResize" SizeToContent="WidthAndHeight" WindowStartupLocation="CenterScreen"> <Border Style="{StaticResource WindowBorderStyle}" Margin="15"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <TextBlock Margin="25,5" VerticalAlignment="Top" HorizontalAlignment="Left" Text="{Binding Instructions}" TextWrapping="Wrap" Width="{Binding ElementName=panelContentControl, Path=ActualWidth, Mode=OneWay}"/> <ContentControl x:Name="panelContentControl" Grid.Row="1" Margin="25,5" Content="{Binding PanelContent}"/> <ContentControl x:Name="buttonsContentControl" Grid.Row="2" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="25,5" Content="{Binding ButtonsContent}"/> </Grid> </Border> </Window>

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  • WPF binding problem

    - by xine
    I've got some bindings in UI: <Window x:Class="Tester.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="377" Width="562" xmlns:my="clr-namespace:MyApp"> <Grid> <TextBlock Text="{Binding Path=current.Text}" Name="Text1" /> <TextBlock Text="{Binding Path=current.o.Text}" Name="Text2" /> </Grid> </Window> Code: class Coordinator : INotifyPropertyChanged{ List<Myclass1> list; int currId = 0; public Myclass1 current{ return list[currId]; } public int CurrId { get { return currId; } set { currId = value; this.PropertyChanged(this,new PropertyChangedEventArgs("current")); } } class Myclass1{ public string Text{get;} public Myclass2 o{get;} } class Myclass2{ public string Text{get;} } When currId changes Tex1 in UI changes too,but Text2 doesn't. I'm assuming this happens because Text2's source isn't updated. Does anyone know how to fix it?

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  • WPF Combobox binding

    - by plotnick
    I got two Comboboxes and both of them have binding with the same Source. <ComboBox ItemsSource="{Binding Source={StaticResource UsersViewSource}}" And when I change something in the first one, it reflects also to the second one. And I dunno how to keep their SelectedItem values separately, using the same ItemsSource.

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  • WPF: Can I use VisualStateManager to change alignment?

    - by kennethkryger
    Hi, I've got this "object-stack" - Window --- Grid (VerticalAlignment = Stretch) ----- Border (VerticalAlignment = Stretch OR Top) The Border a primitive UserControl right now to keep things simple for me. I'd like to be able to use the VisualStateManager to toggle the VerticalAlignment-property of the Border, so that the "Normal-state" equals VerticalAlignment.Top and "Expanded-state" equals VerticalAlignment.Stretch. Is this possible? Also, I'd like to use an easing function, when swithing between the two states.

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  • WPF DataGrid row validation error count

    - by SuperFloh1234
    Hi! I'm currently facing the problem, that I import an Excel file to a DataGrid. This works pretty fine, but after importing the table, I need to know how many rows are invalid. I have applied several validation rules for the different datatypes, and I have an icon in the row header, that shows up if the row is invalid. But since I have more that 10.000 rows in the grid, I don't want scroll all the way through it to find the errors. Any ideas, how to determine the count of invalid rows (and then maybe bind that to a textbox)? Thx

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  • Update Source Without Losing Focus - WPF Telerik RADDatePicker

    - by Sangeetha
    I have a Telerik RadDatePicker, which I am binding to the SelectedDate property. I want this control to show a validation error when the default date set in the control is removed/deleted. I was able to achieve this, but the problem was that the validation error occurs only when Enter is pressed or when we click outside the control. Is there a way tell RadDatePicker to update the source without moving the focus? (Tried UpdateSourceTrigger=PropertyChanged, but still it wasnt working)

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  • Reset TextBox.Background to default in WPF so it still gets updated when system settings change

    - by Neo
    I have a TextBox that I wish to reset its Background property to its default value after changing it to a different colour. I have tried setting it to SystemColors.WindowBrush, but then, if the Display Settings are updated to change this value, it doesn't get dynamically reflected in the TextBox (it does normally if TextBox.Background hasn't been touched). Any idea how to do this?

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  • WPF DataGrid bind data between columns

    - by Markus2k
    Lets say I have 2 columns in my data Grid: Column A: Selected, and Column B: Name. The Selected column is a checkbox. And Name column is text field. I want to set the color of the text in 'Name' column as Blue if Column A's check box is checked, and Red otherwise. Essentially I don't know how to bind data between columns of the datagrid. And sample code/link providing example would be useful.

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  • WPF BackGroundWorker ProgressChanged not updating textblock

    - by user354469
    I have the method below that seems to behaving strangely. The ProgressChanged and RunWorkerCompleted seem to be updating themselves at the same time. If I comment out the RunWorkerCompleted code which updates the Textblock I see the ProgressChanged taking effect after the data is transferred. What am i doing wrong here? I obviously want the textblock to show I'm getting data, then change when I have finished getting the data. public void GetAppointmentsBackground() { System.Windows.Threading.Dispatcher webServiceDispatcher = this.Dispatcher; worker = new BackgroundWorker(); worker.WorkerReportsProgress = true; worker.DoWork += delegate(object sender, DoWorkEventArgs args) { GetAppointmentsForDayDelegate getAppt = new GetAppointmentsForDayDelegate(GetAppointmentsForDay); webServiceDispatcher.BeginInvoke(getAppt); (sender as BackgroundWorker).ReportProgress(25); }; worker.ProgressChanged += delegate(object s, ProgressChangedEventArgs args) { txtMessages.Text = "Contacting Server"; }; worker.RunWorkerCompleted += delegate(object s, RunWorkerCompletedEventArgs args) { txtMessages.Text = "Completed Successfully"; }; worker.RunWorkerAsync(); }

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  • WPF: How to make Contextmenu select and forget?

    - by Kave
    I have a Contextmenu with a ListBox inside. Whenever I right click my control and select a value from my contextmenu the last selected value stays marked and I can't select that value again. The idea is, that I may select the same value within the COntextmenu in order to turn a property on or off. Should be quite basic, what am I missing? Many Thanks,

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  • WPF Databound Listbox

    - by Jeff
    I have a listbox bound to a list of objects for a data entry screen. The item template includes textblocks, a checkbox and comboboxes. When the listbox is populated I would like to change the foreground color of the textblocks to red if object.value1 = true and object.value2 = 0. Any ideas?

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  • Setting WPF control background image using styles?

    - by aviv
    Hi, I have a set of buttons inside a stack panel. I want them all to have a background image. How can i do it using styles? since i don't want to set manually the Background image for each button. Here is a code snippet: <StackPanel Orientation="Horizontal" Height="100px" VerticalAlignment="Top"> <StackPanel.Resources> <Style TargetType="Button"> <Setter Property="Margin" Value="2,4" /> </Style> </StackPanel.Resources> <Button Width="127px" Height="79px" VerticalAlignment="Bottom"> <Button.Background> <ImageBrush ImageSource="images/Tab.png" /> </Button.Background> </Button> <Button>A</Button> <Button>R</Button> <Button>S</Button> </StackPanel> Thanks.

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  • How to reverse items in WPF Datagrid?

    - by irf1x
    If i have DataGrid which looks like: Col 1 Col 2 ------- ------- 1 a 2 b 3 c ... ... n n Can the order be reversed easily without sorting? So that n is first, and 1 is last. I have custom sort implemented from this article, but sorting the same column twice in a row calls sorting function twice (which is slow), so just reversing the order should be faster and have the same effect.

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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 - List items not visible in Blend when 'DisplayMemberPath' is used

    - by Andy T
    Hi, We're currently working out how to implement MVVM and I've got to the point where I've got the MVVM Light Toolkit set up in blend and can specify dummy data to be supplied if running in Blend. All good. I've created a dummy list of data. The list contains 6 instances of a very simple class called DummyItem which has Age and Name properties. Here's the main code from my 'DummyList' class: public class DummyItem{ public string Name; public int Age; public DummyItem(string name, int age){ this.Name = name; this.Age = age; } } public class DummyList : ArrayList { public DummyList() { this.Add(new DummyItem("Dummy1", 00)); this.Add(new DummyItem("Dummy2", 01)); this.Add(new DummyItem("Dummy3", 02)); this.Add(new DummyItem("Dummy4", 03)); this.Add(new DummyItem("Dummy5", 04)); this.Add(new DummyItem("Dummy6", 05)); } } Here's the operative part of my XAML. The DataContext line does work and points to the correct ViewModel. <Grid x:Name="LayoutRoot"> <ListBox x:Name="ListViewBox" DataContext="{Binding Source={StaticResource Locator}, Path=ListViewModel}" ItemsSource="{Binding TheList}" DisplayMemberPath="Name"> </ListBox> </Grid> The problem is, when I add 'DisplayMemberPath', as I have above, then I can no longer see the list items in Blend. If I remove 'DisplayMemberPath', then I see a list of objects (DummyItem) with their full path. When the app is run, everything works perfectly. It's just that in Blend itself I cannot see the list items when I use 'DisplayMemberPath'. Anyone know why I can't see the items inside Blend itself when I use DisplayMemberPath? Thanks! AT

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  • WPF - How to stop an ItemsControl psuedo-grid's columns from dancing/jumping around during layout

    - by Drew Noakes
    Several other questions on SO have come to the same conclusion I have -- using an ItemsControl with a DataTemplate for each item constructed to position items such that they resemble a grid is much simpler (especially to format) than using a ListView. The code resembles: <StackPanel Grid.IsSharedSizeScope="True"> <!-- Header --> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" SharedSizeGroup="Column1" /> <ColumnDefinition Width="Auto" SharedSizeGroup="Column2" /> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Text="Column Header 1" /> <TextBlock Grid.Column="1" Text="Column Header 2" /> </Grid> <!-- Items --> <ItemsControl ItemsSource="{Binding Path=Values, Mode=OneWay}"> <ItemsControl.ItemTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" SharedSizeGroup="Column1" /> <ColumnDefinition Width="Auto" SharedSizeGroup="Column2" /> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Text="{Binding ColumnProperty1}" /> <TextBlock Grid.Column="1" Text="{Binding ColumnProperty2}" /> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> </StackPanel> The problem I'm seeing is that whenever I swap the object to which the ItemsSource is bound (it's an ObservableCollection that I replace the reference to, rather than clear and re-add), the entire 'grid' dances about for a few seconds. Presumably it is making a few layout passes to get all the Auto-width columns to match up. This is very distracting for my users and I'd like to get it sorted out. Has anyone else seen this?

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  • WPF List - ListItem Visibility

    - by niao
    Greetings, I have a FlowDocument where List control is placed. Inside this list I have some ListItem. Is there any way to set some kind of Visibility for specific ListItem? I don't see a coressponding Property like Visibility for ListItem. When I set fontsize="0.1" then application hangs (it goes into infinite loop).

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