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  • Dynamic menu items in WPF

    - by mattdekrey
    Is there a way to create a section on a menu for a list of menu items to be populated by something like an ObservableCollection? I'd like to replicate the Window functionality in Visual Studio, where the open document tabs are listed in a numbered list, limited to the first 10.

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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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  • WPF ControlTemplate and Binding

    - by Vinjamuri
    In the below code, MousePressImage is a dependency property of class ButtonControl. The following Binding doesn't work.. Appreciate your help in solving this issue.. Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=MousePressImage}"/> -- I create the ButtonControl like this. <local:ButtonControl Height="48" Width="160" MouseOverImage="pack://application:,,,/Recipe_06_13;component/Resources/Over.bmp" MousePressImage="pack://application:,,,/Recipe_06_13;component/Resources/Press.bmp" DisableImage=" "> </local:ButtonControl>

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  • problem in multiple asynchronous calls on webservice method in wpf application

    - by black sensei
    Hello Experts! i'm trying to create an application which connects to internet and consume web services for every of it's operation.As far as i'm concerned i'll like to useasync method which i'm using already to get a collection of Contacts.I've realized that when i'm doing the same for groups (meaning getting groups async) i'm having errors in the calls , but when using normal call there ins't.So i did some research online and find that a lot of people has the same problem. Some of them are asked to use WCF (for which i don't know jack).I'll like to know if there is another way to overcome this. if not can somebody point me to reliable resource online and help me get through it? thanks for reading and helping

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  • wpf Image resources and visual studio 2010 resource editor

    - by Berryl
    Hello My motivation for this question is really just to specify an image to be used in a user control via a dependency property for ImageSource. I'm hitting some pain points involving the management, access, and unit testing for this. Is the resource editor a good tool to use to maintain images for the application? What is the best way to translate the Bitmap from the editor to an ImageSource? How can I grab the resource Filename from the editor? Cheers, Berryl

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  • Unset/Change Binding in WPF

    - by captcalamares
    How can I unset the binding applied to an object so that I can apply another binding to it from a different location? Suppose I have two data templates binded to the same object reference. Data Template #1 is the default template to be loaded. I try to bind a button command to a Function1 from my DataContext class: <Button Content="Button 1" CommandParameter="{Binding }" Command="{Binding DataContext.Function1, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"/> This actually works and the function gets binded. However, when I try to load Data Template # 2 to the same object (while trying to bind another button command to a different function (Function2) from my DataContext class): <Button Content="Button 2" CommandParameter="{Binding }" Command="{Binding DataContext.Function2, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" /> It doesn't work and the first binding is still the one executed. Is there a workaround to this? EDIT (for better problem context): I defined my templates in my Window.Resources: <Window.Resources> <DataTemplate DataType="{x:Type local:ViewModel1}"> <local:View1 /> </DataTemplate> <DataTemplate DataType="{x:Type local:ViewModel2}"> <local:View2 /> </DataTemplate> </Window.Resources> The View1.xaml and the View2.xaml contain the button definitions that I described above (I want them to command the control of my process flow). ViewModel1 and ViewModel2 are my ViewModels that implement the interface IPageViewModel which is the type of my variable CurrentPageViewModel. In my XAML, I binded ContentControl to the variable CurrentPageViewModel: <ContentControl Content="{Binding CurrentPageViewModel}" HorizontalAlignment="Center"/> In my .CS, I have a list defined as List<IPageViewModel> PageViewModels, which I use to contain the instances of my two View Models: PageViewModels.Add(new ViewModel1()); PageViewModels.Add(new ViewModel2()); // Set starting page CurrentPageViewModel = PageViewModels[0]; When I try to change my CurrentPageViewModel to the other view model, this is when I want the new binding to work. Unfortunately, it doesn't. Am I doing things the right way?

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  • WPF texbox focus when render to offscreen buffer

    - by dr.mo
    i am rendering a textbox to an offscreen buffer using RenderTargetBitmap and i want to enter text into this textbox, however, i can't set the textbox focus (using Focus() has no effect - presumably because the canvas is not attached to a real window?) this has two consequenes: 1 the keyboard input doesn't get captured 2. even if i set the text manually using TextBox text and CaretIndex = index i dont get a caret because of the lack of focus. is there a way to make this focus somehow? and if not, i'd like to at least have the caret visible even if there is no focus, but can't see a way of doing this.

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  • WPF : Command routing for Keyboard shortcuts.

    - by Sprotty
    Basically I want to create a keyboard shortcut which is valid within the scope of a window, and not just enabled when focus is within the control that binds it. in more detail.... I have a window which has 3 controls a toolbar textbox Custom Control The toolbar has a button bound to the Command CustomCommands.CmdA and linked to 'Ctrl-T'. My Custom Control can process CmdA. When I run the app and click on my custom control CmdA is enabled and works fine. Also Ctrl-T cause the command to fire. However when I select the text box, my custom command CmdA becomes disabled. I can rectify this by setting the command target for CmdA's button. Now when I select the textBox, CmdA is still enabled. But the Keyboard shortcut Ctrl-T does nothing. Is there any easy way to change the scope of keyboard shortcuts? Or do I need to catch the keypress somewhere lower down, and work out which Command it relates to and route it myself (if so is there a framework within which to do this?) Many Thanks Simon

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  • WPF: Is VerticalAlignment inherited by nested containers?

    - by zxcvbnm
    I'd like to have the nested containers inherit that property, but when I set it in the outermost one I'm not sure if it's working. It either is working but I'm not getting the results I want, or maybe I'd have to set up a property somewhere for it to carry. Assuming that a) it is possible to do it and b) I'd have to change a property somewhere, would that have any side effects I should be aware of?

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  • WPF MVVM Cancel Edit

    - by terkri
    How can I implement cancelation of editing an object using MVVM. For example: I have a list of customers. I choose one customer an click the button "Edit", a dialog window(DataContext is binded to CustomerViewModel) opens and I start editing customer's fields. And then I decide to cancel editing, but the fields of the customer have been already changed, so how can I return a customer to its previous state in MVVM?

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  • WPF debug freezes computer with windows 7 64bit

    - by tcables
    Hello, I am using visual studio 2010 on Windows 7 64bit. I compiled and ran a simple application basically a thing a child could make. Well the second it started to run, it froze my computer and rendered it unresponsive. It continues to do this every time and for every application. Any ideas why this is happening?

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  • C#/WPF FileSystemWatcher on every extension on every path

    - by BlueMan
    I need FileSystemWatcher, that can observing same specific paths, and specific extensions. But the paths could by dozens, hundreds or maybe thousand (hope not :P), the same with extensions. The paths and ext are added by user. Creating hundreds of FileSystemWatcher it's not good idea, isn't it? So - how to do it? Is it possible to watch/observing every device (HDDs, SD flash, pendrives, etc.)? Will it be efficient? I don't think so... . Every changing Windows log file, scanning file by antyvirus program - it could realy slow down my program with SystemWatcher :(

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  • WPF multibound textblock not updating

    - by Superstringcheese
    I want to create a program which calculates how long it will take to repeat a process a certain number of times. I've scaled this down a lot for this example. So, I have some textboxes which are bound to properties in a class: Count: <TextBox x:Name="txtCount" Text="{Binding Count, Mode=TwoWay}" Width="50"/> Days: <TextBox x:Name="txtDays" Text="{Binding Days, Mode=TwoWay}" Width="50"/> and a textblock which is multibound like so: <TextBlock x:Name="tbkTotal"> <TextBlock.Text> <MultiBinding StringFormat="Days: {0}, Count: {1}"> <Binding Path="Days" /> /* This isn't updating */ <Binding Path="Count" /> </MultiBinding> </TextBlock.Text> </TextBlock> My DataContext is set in the Window1.xaml.cs file. public Window1() { InitializeComponent(); Sample sample = new Sample(); this.DataContext = sample; } I can update the multibound textblock with the Count property just fine, but the Days property always shows 0, even though the Days input accurately reflects changes. I believe that this is because my accessors are different for Days - namely, the Set method. This class is in a different file. public class Sample : INotifyPropertyChanged { private int _count; private TimeSpan _span; public int Count { get { return _count; } set { _count = value; NotifyPropertyChanged("Count"); /* Doesn't seem to be needed, actually */ } } public TimeSpan Span { get { return _span; } } /* The idea is to provide a property for Days, Hours, Minutes, etc. as conveniences to the inputter */ public double Days { get { return _span.Days; } set { TimeSpan ts = new TimeSpan(); double val = value > 0 ? value : 0; ts = TimeSpan.FromDays(val); _span.Add(ts); NotifyPropertyChanged("Span"); /* Here I can only get it to work if I notify that Span has changed - doesn't seem to be aware that the value behind Days has changed. */ } } private void NotifyPropertyChanged(string property) { if (null != this.PropertyChanged) { PropertyChanged(this, new PropertyChangedEventArgs(property)); } } public Sample() { _count = 0; _span = new TimeSpan(); } public event PropertyChangedEventHandler PropertyChanged; }

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  • WPF CollectionViewSource Grouping

    - by Miles
    I'm using a Collection View Source to group my data. In my data, I have Property1 and Property2 that I'm needing to group on. The only stipulation is that I don't want sub-groups of another group. So, when I group by these two properties, I don't want to have it so that Property2 because a subgroup of Property1's group. The reason why I'm wanting this is because I'm wanting to have a header that shows the following information: Header: <TextBlock.Text> <MultiBinding StringFormat="Property1: {0}, Property2: {1}"> <Binding Path="Property1"/> <Binding Path="Property2"/> </MultiBinding> </TextBlock.Text> I've tried this with my CollectionViewSource but was not able to "combine" the group and subgroup together: <CollectionViewSource x:Key="myKey" Source="{Binding myDataSource}"> <CollectionViewSource.GroupDescriptions> <PropertyGroupDescription PropertyName="Property1" /> <PropertyGroupDescription PropertyName="Property2" /> </CollectionViewSource.GroupDescriptions> </CollectionViewSource> Is it possible to group two properties together? Something like below? <CollectionViewSource x:Key="myKey" Source="{Binding myDataSource}"> <CollectionViewSource.GroupDescriptions> <PropertyGroupDescription PropertyName="Property1,Property2" /> </CollectionViewSource.GroupDescriptions> </CollectionViewSource>

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  • WPF: ComboBox SelectedIndex = -1 ??

    - by msfanboy
    Hello, I am using a MVVM Wizard with several pages. When I set a value in the combobox and go to the next page and switch back I want to reset the value I set before. But all whats happening is that the combobox is empty at top and the index is -1 ? What do I wrong? <ComboBox ItemsSource="{Binding Path=LessonNumbers}" SelectedIndex="{Binding SelectedLessonNumber}" /> private ReadOnlyCollection<int> _lessonNumbers; public ReadOnlyCollection<int> LessonNumbers { get { if (_lessonNumbers == null) this.CreateLessonNumbers(); return _lessonNumbers; } } private void CreateLessonNumbers() { var list = new List<int>(); for (int i = 1; i < 24; i++) { list.Add(i); } _lessonNumbers = new ReadOnlyCollection<int>(list); } private int _selectedLessonNumber; public int SelectedLessonNumber { get { return _selectedLessonNumber; } set { if (_selectedLessonNumber == value) return; _selectedLessonNumber = value; this.OnPropertyChanged("SelectedLessonNumber"); } }

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  • C# Script version of PyBinding for WPF

    - by Jim Strav
    I wrote a CSharpScriptBinding roughly equivalent to the PyBinding on CodePlex. It uses the C# script engine from http://www.csscript.net. After I wrote it, I kind of decided it might not really be something good to use. Although it caches the compiled script code as an already compiled Assembly, my concern is that I will have one temporary Assembly created each time I use the binding. Will this add up to a problem in the future? If so, maybe there is a way in the C# script engine that I don't know about to optimize this further...? Any thoughts to confirm my suspicion that this was just a bad idea (but useful excersise in learning more about bindings and converters)?

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  • How to assign WPF resources to other resource tags

    - by Tom
    This is quite obscure, I may just be missing something extremely simple. Scenario 1 Lets say I create a gradient brush, like this in my <Window.Resources> section: <LinearGradientBrush x:Key="GridRowSelectedBackBrushGradient" StartPoint="0,0" EndPoint="0,1"> <GradientStop Color="#404040" Offset="0.0" /> <GradientStop Color="#404040" Offset="0.5" /> <GradientStop Color="#000000" Offset="0.6" /> <GradientStop Color="#000000" Offset="1.0" /> </LinearGradientBrush> Then much later on, I want to override the HighlightBrushKey for a DataGrid. I have basically done it like this (horrible); <LinearGradientBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" GradientStops="{Binding Source={StaticResource GridRowSelectedBackBrushGradient}, Path=GradientStops}" StartPoint="{Binding Source={StaticResource GridRowSelectedBackBrushGradient}, Path=StartPoint}" EndPoint="{Binding Source={StaticResource GridRowSelectedBackBrushGradient}, Path=EndPoint}" /> This is obviously not the most slick way of referencing a resource. I also came up with the following problem, which is almost identical. Scenario 2 Say I created two colors in my <Window.Resources> markup, like so: <SolidColorBrush x:Key="DataGridRowBackgroundBrush" Color="#EAF2FB" /> <SolidColorBrush x:Key="DataGridRowBackgroundAltBrush" Color="#FFFFFF" /> Then later on, I want to supply them in an Array, which feeds the ConverterParameter on a Binding so I can supply the custom Converter with my static resource instances: <Setter Property="Background"> <Setter.Value> <Binding RelativeSource="{RelativeSource Mode=Self}" Converter="{StaticResource BackgroundBrushConverter}"> <Binding.ConverterParameter> <x:Array Type="{x:Type Brush}"> <SolidColorBrush Color="{Binding Source={StaticResource DataGridRowBackgroundBrush}, Path=Color}" /> <SolidColorBrush Color="{Binding Source={StaticResource DataGridRowBackgroundAltBrush}, Path=Color}" /> </x:Array> </Binding.ConverterParameter> </Binding> </Setter.Value> </Setter> What I've done is attempt to rereference an existing resource, but in my efforts I've actually recreated the resource, and bound the properties so they match. Again, this is not ideal. Because I've now hit this problem at least twice, is there a better way? Thanks, Tom

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  • WPF application fails with "bad image format"

    - by H4mm3rHead
    Hi, I have an application build on my x64 computer. It is now build for x86 but on windows XP machines (x86) it fails with the "bad image format". On all Vista and up OS, it runs perfectly on x64 platfomrms. I tracked the problem to my icon. I removed the icon and now it runs fine, anyone got an idea of how on earth this could relate to anything?

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  • Wpf user control button command is not firing in viewmodel

    - by mani1985
    hi, i have a user control in which there is a button. i wrote icommand in the viewmodel for the button to call some function. when i use this user control in some other page ,the user control button click is not working. my xaml Save my view model private ICommand _insertNewNote; public ICommand InsertNewNote { get { if (_insertNewNote == null) { _insertNewNote = new RelayCommand( param = this.InsertNewExceptionNote()); } return _insertNewNote; } } public void InsertNewExceptionNote() { //... } my problem is when i use this user control in some page like this the user control is getting displayed in the page. but the button in the user control is not firing when i click it. user control view model icommand is not at all initialized. please provide me a solution. Thanks in advance.

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  • WPF - Extend ListView with checkable AND selectable ListViewItems

    - by Marks
    Hi there. I already read many examples on extending ListViews with checkboxes bound with IsSelected. But I want something more. I want a seperation between the checked and selected state, so i get a ListBox that has a single selected item, but can have multiple checked items. Unfortunately ListViewItem does not have a property for checked and I dont see a possibility to get the ListView to work with a custom CheckableListViewItem. Of course i could use a List of objects with a checked property as ItemSource, but I dont think thats a good way to go. Checked or not is a matter of the list or item-container, not of the object listed in it. Beside that I dont want all my classes like user, role, group to have counterparts like checkableUser, checkableRole and checkableGroup. The behaviour i want can be easyly accomblished for the UI with a <DataTemplate x:Key="CheckBoxCell"> <StackPanel Orientation="Horizontal"> <CheckBox /> </StackPanel> </DataTemplate> and a <GridViewColumn CellTemplate="{StaticResource CheckBoxCell}" Width="30"/> But without a binding on the checkbox i cant check if it is checked or not. Is there any way to accomplish something like that? The perfect solution for me would be to have listView1.SelectedItem, listView1.CheckedItems and maybe a listView1.UncheckedItems and of course listView1.CheckItem and listView1.UncheckItem. Thanks for any help.

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  • Dynamically update Font Size of application with a single trigger in WPF

    - by Sukan
    I have an application which has different font sizes for different controls say Button: 10, TextBlock : 12 etc. I want to give options to the user where he can select any one of the below say Normal , Small, Big, Bigger. Suppose one selects "small" I would want to decrease every distinct font size by 2. If "Big", I would want to increase every font size by 2. I hope we can do this using converter sending actual font size as parameter and render as per the selected choice if I am not wrong. What will be the best option. Sorry if my doubt is absurd or silly. Thank you.

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  • SSRS Report problem in wpf

    - by Johnny
    DataTable reportData = this.GetReportData(startId, endId, empId, minAmount, reportType); ReportViewer reportViewer = new ReportViewer(); reportViewer.ProcessingMode = ProcessingMode.Local; reportViewer.LocalReport.ReportEmbeddedResource = "PDCL.ERP.Modules.Marketing.Reports.rptDoctorDetail.rdlc"; ReportDataSource ds = new ReportDataSource(); ds.Name = "DoctorDetail_Report"; ds.Value = reportData; reportViewer.LocalReport.DataSources.Add(ds); reportViewer.RefreshReport(); this.WindowsFrmHost.Child = reportViewer; this is my code.I'm using SSRS but the viewer only shows but not any data. Why..?

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