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  • Where to put WPF specific code when using MVVM

    - by Surfbutler
    I'm just getting up to speed on MVVM, but all the examples I've seen so far are binding View controls to simple non-WPF specific data types such as strings and ints. However in our app I want to be able to set a button's border brush based on a number in the Model. At the moment, I translate the number into a brush in the ViewModel to keep the View XAML only, but is that right? I don't like putting WPF specific code in the ViewModel, but equally I don't like the idea of putting code-behind on my View panel. Which is the best way? Thanks

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  • How to organize architecture WPF project?

    - by Dmitriy
    Hello! In my WPF project i want to have only one Window - MainWindow and UserControls as working part. I have some little different applications in one, and want to make navigation on top of my MainWindow as buttons. And little applications as UserControl. In MainWindow - grid with Big Empty Zone - which use to keep and run work. But, i want to navigate to other userControl from another. (probably do not understand :() How organize architecture WPF project that: one main window and many usercontrols which places in mainwindow and replace each other in turn. and there is the possibility of navigating from another usercontrol to another. May be it's MVVM, but i don't understand how this pattern can help me.

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  • ReportViewer datadinding (WPF)

    - by user512150
    I have a rdlc file and I try to show it using report viewer control in WPF. My DataSource is called 'OfficeDataSet' and DataSet used in report is called 'Address'. I try to initialize report viewer (I put it in WindowsFormsHost) like this: private void PrepareReport() { reportDataSource = new ReportDataSource(); officeDataSet = new OfficeDataSet(); adapter = new AddressTableAdapter(); adapter.Fill(officeDataSet.Address); reportDataSource.Name = "OfficeDataSet_Address"; reportDataSource.Value = officeDataSet.Address; viewerInstance.LocalReport.DataSources.Add(reportDataSource); viewerInstance.LocalReport.ReportEmbeddedResource = "WpfApplication1.Reports.TestReport.rdlc"; viewerInstance.Location = new System.Drawing.Point(0, 0); viewerInstance.RefreshReport(); } but I got the message "A data source instance has not been supplied for the data source 'Address'". Anybody know what can be wrong with this code? (I'm totally new in WPF and Reporting Services).

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  • Using WPFPerf to profile a WPF 4.0 application doesn't show me any information

    - by Adrian
    I am trying to use WPFPerf to profile a WPF 4.0 application (I have the latest WPFPerf that should work on WPF 4.0 aps). I start the tool Visual Profiler from WPFPerf, I start my aplication, but after that nothing happens and the element tree from the Visual Profiler is empty. No other error message is shown. Can anyone tell me what am I not doint right? As an additional information, when I try to analize my .exe assembly or any other assembly from my application, I get a BadFormatException saying that the assembly was build with a newer version of .NET. From the download page http://go.microsoft.com/fwlink/?LinkID=191420 I see that this version of WPFPerf should be ok for my app

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  • WPF MVVM - Correct way to consume a web service asynchronously

    - by byte
    I have implemented MVVM in my WPF application. I was wondering what is the correct way to consume a Web Service from WPF MVVM app. So far, I have created a DataAccess interface and a class that implements this interface. This would serve as a facade / proxy to the web service. The ViewModel gets a reference to this class as the constructor parameter so it can make any calls to get/set data, in this case it will be a Web service call. I would appreciate if you can guide me with some hints and / or direct me to some online resource.

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  • How to animate line-drawing in iPhone development?

    - by david
    I have been searching around, but there seems no good answer for this simple question. So I am asking again: how to animate line-drawing in iphone dev? Basically what I want is something like this: @implementation MyUIView - (void) triggerLineDrawing: (CGPathRef) path { ... // animate line drawing here } Can it be done?

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  • How to use ObjectAnimator to change a the background of a View with a crossfade (or fade out - fade in) animation?

    - by jul
    is there any way to create one animation with ObjectAnimator to change the background of a View with a crossfade animation? Something like ObjectAnimator.ofObject(<myView.background>, <crossfade or fade in -fade out>, <resources_1>, <resources_2>); I know I can do a fade out of one image, set a listener to detect the end of the animation, and fade in the other image. I'd just like to know if there's a more elegant way... Thanks

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  • WPF: Creating instances of resources?

    - by oakskc
    I'm brand spanking new to WPF and am trying to play around with projects to better understand what I'm reading. My understanding of a resource is that it is the instance, you can't use it like a factory and create instances of it. For example, a XAML-defined rectangle. You can reference it, but you can't have numerous instances of it all over the surface. In WPF, what would be the way to do that? If I define a Rectangle as a resource with specific properties and wanted to have multiple instances of that within a dynamically-generated grid, how should I be going about it? Or is there a different way I should be trying to do this? Purely academic exercise with no real-world application.

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  • WPF Dragging a window to the desktop

    - by pfaz
    I've seen some nice Adobe AIR demos where a component of the application is dragged outside of the application and dropped onto the desktop and then continues to run in a new window. This seems to be facilitated by the NativeDragManager class. Is there anything similar in WPF? How would you go about implementing this sort of functionality in WPF to allow a user control to be dragged to the desktop and then continue to run in a new window? This is great for multi-monitor scenarios and exactly what msft have added to vs2010. Regards pfaz

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  • WPF Books in 2010

    - by notJim
    I'm looking to learn WPF, and I'd like to get a book to help in the process. Most of the popular questions on SO regarding actual books are from 2008, and I wanted to see if recommendations for books had changed at all. WPF Unleashed, which seems to be the most popular recommendation, was published in 2006, which is quite a while ago, with the lightening-quick pace that Microsoft has been following with .NET. Does this book still work? For some background, I'm a web developer (using MVC, so MVVM makes sense to me conceptually), looking to make the jump to desktop development. I did C# a while ago, but I'll be picking up a separate C# book to get up to speed on that. I am not interested in Silverlight. I am not necessarily interested in flashy UIs right now, as I'm working on business software but what I am interested in is good, clean, intuitive user interfaces.

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  • jQuery - How to Prevent Animation Queue Buildup with Double Animations?

    - by Jason
    Hello, I was taking a look at this tutorial here to prevent animation buildups: http://www.learningjquery.com/2009/01/quick-tip-prevent-animation-queue-buildup My situation: I am doing a double animation like this below, and would like the prevent the animation build up. Since I have 2 animations going, it seems it ignores the .stop(). What can be done to prevent this? I have tried .stop() on both .animate and if I do that it stops animating... $(document).ready(function() { $('#element').hover(function() { $(this).stop() .animate( { left: 200 }, { duration: 'slow', }) .animate( { top: 200 }, { duration: 'slow', }); } , function() { $(this).stop() .animate( { left: 0 }, { duration: 'slow', }) .animate( { top: 0 }, { duration: 'slow', }); }); }); Any help will be greatly aprecaited!!

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  • WPF: Menu items and combo boxes don't render in Windows 7 64-bit

    - by lilserf
    I'm trying to use an existing internal WPF application (I do have access to the source), but it was developed on XP and I'm using Windows7 64-bit. When I click (for instance) the File menu, 90% of the time I see no drop-down menu at all. The menu still exists - I can use the arrow keys to navigate up and down and choose an option if I happen to know the order of the options, but nothing renders at all. The other 10% of the time, the menu or some portion of it DOES render, but as I move the cursor up and down I get graphical corruption or disappearing options until I end up back at the "no menu is visible at all" state. This is also true of combo boxes within the application - they show no data when I drop them down, but I can arrow down and choose an entry. Microsoft has some advice about WPF rendering issues here but none of these steps has helped with my issue.

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  • How to make my WPF application as FAST as Outlook

    - by Raul Otaño
    The commons WPF applications take some time for loading medium complex views, once the view is loaded it works fine. For example in a Master - Detail view, if the Detail view is very complex and use different DataTemplates take some seconds (2-3 seconds) for load the view. When i open the Outlook application, for instance, it renders complex views and it is relative much more fast. Is there a way for increase the performance of my WPF application? Maybe a way for not loading the template's data every time that change the "master" item, and load it only one time in the app time live? i will appreciate any suggestion.

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  • Updating GUI Component from a different class C# WPF

    - by Boardy
    Hi all, I am trying to update a GUI component (DataGrid) in one class from a different class. I am using C# and WPF Forms. When I used the standard WF forms I could pass a reference to the GUI component as a parameter to the function that needed to do the work with the DataGrid. However, I do not know how I can do this in WPF. I have Class1 which has the GUI component and I need Class3 to run the function inside Class2 which will automatically update the GUI display of the Datagrid found in Class1. Any help with this would be much appreciated.

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  • OpenGL ES perspective projection

    - by TimeManx
    I'm having a hard time understanding how glFrustum & gluPerspective work. I understand the concept of perspective projection but the functions aren't behaving how I expect them to. For example, if I set the frustum this way glFrustumf(0, 10, 0, 10, 1, 100) and have a rectangle at points 0, 0, 1, 0, 10, 1, 10, 10, 1, 10, 0, 1 then the rectangle is drawn with its left edge at -5 & right edge at 5, so the left half of the rectangle isn't visible. And if x is translated, I'd expect y to be too. But that doesn't happen either. In whatever examples I've seen, the coordinates for the projection matrix are taken as glFrustumf(-10, 10, -10, 10, 1, 100) but either way, whatever part is shown should be dependent on the rectangle's coordinates, right?

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  • Why am I unable to prevent the animation queue from stacking without breaking my code?

    - by user1888886
    I am attempting to use jquery and CSS to animate the buttons of a navigation sidebar I am using to signify which button is selected when the mouse is hovered over each. Currently, my code for the CSS appears as such: #navbutton {position:relative; width:178px; height:35px; border:1px #FFF solid; z-index:+3; font-family:'Capriola', sans-serif; font-size:18px; text-align:center;} #navbutton.button {color:#77D; background-color: #F0B0D0;} #navbutton.button_hover {color:#66C; background-color: #FCF; padding:10px;} And my jquery: <script type="text/javascript"> $(document).ready(function(){ $("#sidebar div").mouseenter(buttonHover) function buttonHover(){ $(this).stop().switchClass('button','button_hover',500); } $("#sidebar div").mouseleave(button) function button(){ $(this).stop().switchClass('button_hover','button',500); } }); </script> Before I added the .stop() to each part of the animation, the animation queue would stack up for each time the mouse was moved over each button and then removed. Now that the .stop() has been applied, however, if the mouse is moved away from a button during its animation, the button will freeze and remain in its mid-animation state, unable to be fixed by being hovered over until the page is reloaded, rather than reverting to its original mouseleave state. From everything I've read, this should not be the case. Might anyone be able to tell why my animation queue becomes broken once the .stop() is applied?

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  • How do I make an ellipse blink?

    - by MedicineMan
    I am trying to make a custom control in WPF. I want it to simulate the behavior of a LED that can blink. There are three states to the control: On, Off, and Blinking. I know how to set On and Off through the code behind, but this WPF animation stuff is just driving me nuts!!!! I cannot get anything to animate whatsoever. The plan is to have a property called state. When the user sets the value to blinking, I want the control to alternate between green and grey. I'm assuming I need a dependency property here, but have no idea. I had more xaml before but just erased it all. it doesn't seem to do anything. I'd love to do this in the most best practice way possible, but at this point, I'll take anything. I'm half way to writing a thread that changes the color manually at this point. <UserControl x:Class="WpfAnimation.LED" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Height="300" Width="300"> <Grid> <Ellipse x:Name="MyLight" Height="Auto" Width="Auto"/> </Grid> </UserControl>

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  • Using data binding on value which is a FrameworkElement

    - by JaredPar
    One of my data sources produces a collection of values which are typed to the following interface public interface IData { string Name { get; } FrameworkElement VisualElement { get; } } I'd like to use data binding in WPF to display a collection of IData instances in a TabControl where the Name value becomes the header of the tab and the VisualElement value is displayed as the content of the corresponding tab. Binding the header is straight forward. I'm stuck though on how to define a template which allows me to display the VisualElement value. I've tried a number of solutions with little success. My best attempt is as follows. <TabControl ItemsSource="{Binding}"> <TabControl.ItemTemplate> <DataTemplate> <Label Content="{Binding Name}"/> </DataTemplate> </TabControl.ItemTemplate> <TabControl.ContentTemplate> <DataTemplate> How do I display VisualElement here? </DataTemplate> </TabControl.ContentTemplate> </TabControl> I'm still very new to WPF so I could be missing the obvious here.

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  • WPF Button Storyboard with an image for MouseOver

    - by Vinjamuri
    I have the following xaml for changing the image for WPF button when mouse is on the button. It give below error. Any help is appreciated... 'System.Windows.Media.Animation.DoubleAnimation' animation object cannot be used to animate property 'Source' because it is of incompatible type 'System.Windows.Media.ImageSource'. <Style TargetType="{x:Type local:ButtonControl}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type local:ButtonControl}"> <Grid> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="CommonStates"> <VisualState x:Name="MouseOver"> <Storyboard> <DoubleAnimation Storyboard.TargetName="img" Storyboard.TargetProperty="Source" To="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=MouseOverImage}" /> </Storyboard> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <Border> <Image x:Name="img" Source="pack://application:,,,/Recipe_06_13;component/Resources/normal.bmp" /> </Border> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>

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  • WPF Trigger / Style overrides another

    - by ozczecho
    I have a listview defined as such <ListView Width="auto" SelectionMode="Single" ItemContainerStyle="{StaticResource baseListViewStyle}" .... Then in "baseListViewStyle" I have defined some base styles to apply to my list views, including a Style trigger: <Style x:Key="baseListViewStyle" TargetType="ListViewItem"> <Setter Property="Height" Value="20" /> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Foreground" Value="Red" /> </Trigger> </Style.Triggers> </Style> The trigger here highlights the row when mouse is over it. Nice. I also have a Data Trigger on the listviewitem: <Style.Triggers> <DataTrigger Binding="{Binding IsTestTrue}" Value="True"> <DataTrigger.EnterActions> <BeginStoryboard Storyboard="{StaticResource SomeFunkyAnimation}" /> </DataTrigger.EnterActions> </DataTrigger> If test is true then a nice little fade animation is played out. This all works except when I move my mouse over the row where "test is true" the animation stops and the mouse over style is displayed. Any ideas how I can override that style in my DataTrigger? TIA

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  • Drawing a WPF UserControl with DataBinding to an Image

    - by LorenVS
    Hey Everyone, So I'm trying to use a WPF User Control to generate a ton of images from a dataset where each item in the dataset would produce an image... I'm hoping I can set it up in such a way that I can use WPF databinding, and for each item in the dataset, create an instance of my user control, set the dependency property that corresponds to my data item, and then draw the user control to an image, but I'm having problems getting it all working (not sure whether databinding or drawing to the image is my problem) Sorry for the massive code dump, but I've been trying to get this working for a couple of hours now, and WPF just doesn't like me (have to learn at some point though...) My User Control looks like this: <UserControl x:Class="Bleargh.ImageTemplate" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:c="clr-namespace:Bleargh" x:Name="ImageTemplateContainer" Height="300" Width="300"> <Canvas> <TextBlock Canvas.Left="50" Canvas.Top="50" Width="200" Height="25" FontSize="16" FontFamily="Calibri" Text="{Binding Path=Booking.Customer,ElementName=ImageTemplateContainer}" /> <TextBlock Canvas.Left="50" Canvas.Top="100" Width="200" Height="25" FontSize="16" FontFamily="Calibri" Text="{Binding Path=Booking.Location,ElementName=ImageTemplateContainer}" /> <TextBlock Canvas.Left="50" Canvas.Top="150" Width="200" Height="25" FontSize="16" FontFamily="Calibri" Text="{Binding Path=Booking.ItemNumber,ElementName=ImageTemplateContainer}" /> <TextBlock Canvas.Left="50" Canvas.Top="200" Width="200" Height="25" FontSize="16" FontFamily="Calibri" Text="{Binding Path=Booking.Description,ElementName=ImageTemplateContainer}" /> </Canvas> </UserControl> And I've added a dependency property of type "Booking" to my user control that I'm hoping will be the source for the databound values: public partial class ImageTemplate : UserControl { public static readonly DependencyProperty BookingProperty = DependencyProperty.Register("Booking", typeof(Booking), typeof(ImageTemplate)); public Booking Booking { get { return (Booking)GetValue(BookingProperty); } set { SetValue(BookingProperty, value); } } public ImageTemplate() { InitializeComponent(); } } And I'm using the following code to render the control: List<Booking> bookings = Booking.GetSome(); for(int i = 0; i < bookings.Count; i++) { ImageTemplate template = new ImageTemplate(); template.Booking = bookings[i]; RenderTargetBitmap bitmap = new RenderTargetBitmap( (int)template.Width, (int)template.Height, 120.0, 120.0, PixelFormats.Pbgra32); bitmap.Render(template); BitmapEncoder encoder = new PngBitmapEncoder(); encoder.Frames.Add(BitmapFrame.Create(bitmap)); using (Stream s = File.OpenWrite(@"C:\Code\Bleargh\RawImages\" + i.ToString() + ".png")) { encoder.Save(s); } } EDIT: I should add that the process works without any errors whatsoever, but I end up with a directory full of plain-white images, not text or anything... And I have confirmed using the debugger that my Booking objects are being filled with the proper data... EDIT 2: Did something I should have done a long time ago, set a background on my canvas, but that didn't change the output image at all, so my problem is most definitely somehow to do with my drawing code (although there may be something wrong with my databinding too)

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