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  • WPF command/click argument

    - by Joel Barsotti
    So I have a background in ASP.NET where a button could have a click handler or a command handler and then a command argument. That pattern was great for when you had a bunch of buttons that basically needed to execute the same block of code with only a slightly different argument. Is there a collary in WPF? From what I've seen of the Command in WPF is that it revolves around an action that is independent of the control that invokes it (and still doesn't provide a way to provide an argument). Which is not really what I need.

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  • Serialize WPF component using XamlWriter without default constructor

    - by mizipzor
    Ive found out that you can serialize a wpf component, in my example a FixedDocument, using the XamlWriter and a MemoryStream: FixedDocument doc = GetDocument(); MemoryStream stream = new MemoryStream(); XamlWriter.Save(doc, stream); And then to get it back: stream.Seek(0, SeekOrigin.Begin); FixedDocument result = (FixedDocument)XamlReader.Load(stream); return result; However, now I need to be able to serialize a DocumentPage as well. Which lacks a default constructor which makes the XamlReader.Load call throw an exception. Is there a way to serialize a wpf component without a default constructor?

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  • WPF Application Hang

    - by Karim
    Hi, I'm using Windows 7 Professional (x64) and having installed .NET 4.0 RTM on my machine. Since 2 days I'm noticing that every WPF application that I'm trying to run hangs and becomes non responsive (a not responding text is appended to it's title bar) and it's painted white. There is no info regarding any exception, no error message. Nothing. Even the Event Log shows that there was "application hang" event (code 1002) and nothing more. This problem is for everything that is written in WPF, even for products like NHibernate Profiler and other stuff that I was using on a regular basis without any issues. Tried to reinstall .NET 4.0 and nothing changed. Any ideas why this might be happening?

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  • WPF Application that only has a tray icon

    - by Michael Stum
    I am a total WPF newbie and wonder if anyone could give me some pointers how to write an application that starts minimized to tray. The idea is that it periodically fetches an RSS Feed and creates a Toaster-Popup when there are new feeds. The Application should still have a Main Window (essentially just a list containing all feed entries), but that should be hidden by default. I have started reading about XAML and WPF and I know that the StartupUri in the App.xaml has to point to my main window, but I have no idea what the proper way is to do the SysTray icon and hide the main window (this also means that when the user minimizes the window, it should minimize to tray, not to taskbar). Any hints?

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  • Mouse scroll not working in a scroll viewer with a wpf datagrid and additional UI elements

    - by paladugu457
    I am trying to figure out how to get the mouse scroll working on a wpf window with a scrollviewer and a datagrid within it. The WPF and C# code is below <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto"> <Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <Grid Grid.Row="0"> <Border Name="DataGridBorder" BorderThickness="2" Margin="1" CornerRadius="4" BorderBrush="#FF080757"> <dg:DataGrid AutoGenerateColumns="False" Name="ValuesDataGrid" BorderThickness="0" CanUserResizeColumns="True" FontWeight="Bold" HorizontalScrollBarVisibility="Auto" CanUserReorderColumns="False" IsReadOnly="True" IsTextSearchEnabled="True" AlternationCount="2" SelectionMode="Extended" GridLinesVisibility="All" HeadersVisibility="Column" CanUserAddRows="False" CanUserDeleteRows="False" CanUserResizeRows="False" CanUserSortColumns="False" RowDetailsVisibilityMode="Collapsed" SelectedIndex="0" RowStyle="{StaticResource CognitiDataGridRowStyle}" > <dg:DataGrid.Columns> <dg:DataGridTemplateColumn Header="Title" > <dg:DataGridTemplateColumn.CellTemplate> <DataTemplate> <StackPanel Orientation="Horizontal" > <TextBlock HorizontalAlignment="Left" VerticalAlignment="Center" Text="{Binding Path=Name}" FontWeight="Normal" /> </StackPanel> </DataTemplate> </dg:DataGridTemplateColumn.CellTemplate> </dg:DataGridTemplateColumn> </dg:DataGrid.Columns> </dg:DataGrid> </Border> </Grid> <Button Grid.Row="1" Height="90" >hello world</Button> </Grid> </ScrollViewer> and the C# code is as follows public partial class Window1 : Window { public Window1() { InitializeComponent(); initialize(); } public void initialize() { ObservableCollection<MyObject> testList = new ObservableCollection<MyObject>(); for (int i = 0; i < 20; i++) { MyObject my = new MyObject("jack " + i); testList.Add(my); } ValuesDataGrid.ItemsSource = testList; } } public class MyObject { public string Name { get; set; } public MyObject(string name) { Name = name; } } The problem i am facing is that when using the mouse to scroll, it works fine when it is over the button but as soon as i move the mouse pointer over the grid and try to scroll, nothing happens. I am able to move the scrollbar of the scrollviewer directly though. I am still a wpf novice so any help on how to get the mouse scroll to work over the datagrid would be appreciated. I am guessing there should be a pretty easy solution for this but I havent been able to figure it out

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  • Ellipse Drawing WPF Animation

    - by widmayer
    I am developing a control that is a rectangle area and will draw an ellipse in the rectangle area when a trigger occurs. This control will be able to host other controls like, textbox's, buttons, etc. so the circle will be drawn around them when triggered. I want the circle being drawn as an animation like you were circling the inner controls with a pen. My question is whats the best way to accomplish this. I've been doing some research and I could use WPF animation or I could use GDI+ to accomplish the tasks. I am new to WPF animation so that is why I am asking the question.

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  • Deploying WPF application: .NET 3.5 issues

    - by Robbert Dam
    Hi all, Users around my country are currently beta-testing our application. My app uses WPF & Linq, so I need .NET 3.5 installation. On most system, everything works find, including automatic installation on .NET 3.5 on machines that do not have that installed yet. However, on one machine (XP SP2) my application does not run. The user reported no issues during .NET 3.5 installation (except for a process that need to close before the installer could continue - he closed the process and continued). The application crashes on startup. To debug this issue, I did the following: Have him reboot his machine Let him manually re-install the .NET 3.5 framework (no errors reported) Have him run a test WPF app that only displays a button - also crashes Let him send the .NET 3.5 installation logs - these are huge, don't now where to look Does anyone have strategy on how to debug such issues? I expect that this will occur more when the application is released..

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  • The best way to organize WPF projects

    - by Mike
    Hello everybody, I've started recently to develop a new software in WPF, and I still don't know which is the best way to organize the application, to be more productive with Visual Studio and Expression Blend. I noticed 2 annoying things I'd like to solve: I'm using Code Contracts in my projects, and when I run my project with Expression Blend, it launches the static analysis of the code. How can I stop that? Which configuration of the project does Blend use by default? I've tried to disable Code Contracts in a new configuration. It works in VS as the static analysis is not launched, but it has no effects in Blend. I've thinked about splitting the Windows Application in 2 parts: the first one containing the views of the WPF (app.exe) and the second one being the core of the project, with the logic code (app.core.dll), and I would just open the former project in Blend. Any thoughts about that? Thanks in advance Mike

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  • FoxPro to WPF porting help?

    - by RAJ K
    hi friends, I am porting an application based on foxpro to WPF C# but i stuck in this window & i need your help. here is a screen shot of window Click Here. this is basically a wine shop billing part which allows to bill upto 99 items. Code col. allows to input item code and all description will come up. I am looking for something similar interface in WPF. Please help.

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  • WPF Validation in an ElementHost control

    - by Jon Mitchell
    I've got a WinForms form that contains an ElementHost control (which contains a WPF UserControl) and a Save button. In the WPF UserControl I've got a text box with some validation on it. Something like this... <TextBox Name="txtSomething" ToolTip="{Binding ElementName=txtSomething, Path=(Validation.Errors).[0].ErrorContent}"> <Binding NotifyOnValidationError="True" Path="Something"> <Binding.ValidationRules> <commonWPF:DecimalRangeRule Max="1" Min="0" /> </Binding.ValidationRules> </Binding> </TextBox> This all works fine. What I want to do however, is disable the Save button while the form is in an invalid state. Any help would be greatly appreciated.

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  • WPF Embedded Database Application

    - by testerws
    Hello everyone, im new with wpf and want to make a small Application with the embedded (local) database in WPF. Im using VS08, -add new file - local Database, so far so good. I also can add a table (test table called Person with Name and Age), this works good. And now comes my problem, could anyone tell me how to make (select... insert) statements in codebehind, so that i could display them in a datagrid (from wpftoolkit). Need some code or step by step tut. :D

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  • Managing the layout of a Java MainFrame of Canvas3d

    - by John N
    Hi, Im trying to organise the layout of four canvas3d objects in a single MainFrame. Iv tried using some layout managers but none are working (or im doing it wrong). Can anyone give me advice or point me to a way to get this to display the four canvas's as a grid of four? Thanks, John public class Main { public static void Main(){ Window win = new Window(); } } import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.Locale; import javax.media.j3d.PhysicalBody; import javax.media.j3d.PhysicalEnvironment; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.View; import javax.media.j3d.ViewPlatform; import javax.media.j3d.VirtualUniverse; import javax.vecmath.Vector3f; import com.sun.j3d.utils.picking.PickCanvas; public class Universe { boolean camera = true; Canvas3D canvas1, canvas2, canvas3, canvas4; VirtualUniverse universe; Locale locale; TransformGroup vpTrans1, vpTransRight, vpTransFront, vpTransPers; TransformGroup mouseTransform = null; View view1, view2, view3, view4; BranchGroup scene; PickCanvas pickCanvas1 = null; PickCanvas pickCanvas2 = null; PickCanvas pickCanvas3 = null; PickCanvas pickCanvas4 = null; BranchGroup obj = new BranchGroup(); // Create a BranchGroup node for the view platform BranchGroup vpRoot = new BranchGroup(); //Temp vars for cam movement public Universe(Canvas3D c1, Canvas3D c2, Canvas3D c3, Canvas3D c4, BranchGroup scene) { this.canvas1 = c1; this.canvas2 = c2; this.canvas3 = c3; this.canvas4 = c4; this.scene = scene; // Establish a virtual universe that has a single // hi-res Locale universe = new VirtualUniverse(); locale = new Locale(universe); // Create a PhysicalBody and PhysicalEnvironment object PhysicalBody body = new PhysicalBody(); PhysicalEnvironment environment = new PhysicalEnvironment(); // Create a View and attach the Canvas3D and the physical // body and environment to the view. view1 = new View(); view1.addCanvas3D(c1); view1.addCanvas3D(c2); view1.addCanvas3D(c3); view1.addCanvas3D(c4); view1.setPhysicalBody(body); view1.setPhysicalEnvironment(environment); // Create a BranchGroup node for the view platform BranchGroup vpRoot = new BranchGroup(); // Create a ViewPlatform object, and its associated // TransformGroup object, and attach it to the root of the // subgraph. Attach the view to the view platform. Transform3D t = new Transform3D(); t.set(new Vector3f(0.0f, 0.0f, 2.0f)); ViewPlatform vp = new ViewPlatform(); vpTrans1 = new TransformGroup(t); vpTrans1.addChild(vp); vpRoot.addChild(vpTrans1); vpRoot.addChild(scene); view1.attachViewPlatform(vp); // Attach the branch graph to the universe, via the // Locale. The scene graph is now live! locale.addBranchGraph(vpRoot); } } import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.Locale; import javax.media.j3d.PhysicalBody; import javax.media.j3d.PhysicalEnvironment; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.View; import javax.media.j3d.ViewPlatform; import javax.media.j3d.VirtualUniverse; import javax.vecmath.Vector3f; import com.sun.j3d.utils.picking.PickCanvas; public class Universe { boolean camera = true; Canvas3D canvas1, canvas2, canvas3, canvas4; VirtualUniverse universe; Locale locale; TransformGroup vpTrans1, vpTransRight, vpTransFront, vpTransPers; TransformGroup mouseTransform = null; View view1, view2, view3, view4; BranchGroup scene; PickCanvas pickCanvas1 = null; PickCanvas pickCanvas2 = null; PickCanvas pickCanvas3 = null; PickCanvas pickCanvas4 = null; BranchGroup obj = new BranchGroup(); // Create a BranchGroup node for the view platform BranchGroup vpRoot = new BranchGroup(); //Temp vars for cam movement public Universe(Canvas3D c1, Canvas3D c2, Canvas3D c3, Canvas3D c4, BranchGroup scene) { this.canvas1 = c1; this.canvas2 = c2; this.canvas3 = c3; this.canvas4 = c4; this.scene = scene; // Establish a virtual universe that has a single // hi-res Locale universe = new VirtualUniverse(); locale = new Locale(universe); // Create a PhysicalBody and PhysicalEnvironment object PhysicalBody body = new PhysicalBody(); PhysicalEnvironment environment = new PhysicalEnvironment(); // Create a View and attach the Canvas3D and the physical // body and environment to the view. view1 = new View(); view1.addCanvas3D(c1); view1.addCanvas3D(c2); view1.addCanvas3D(c3); view1.addCanvas3D(c4); view1.setPhysicalBody(body); view1.setPhysicalEnvironment(environment); // Create a BranchGroup node for the view platform BranchGroup vpRoot = new BranchGroup(); // Create a ViewPlatform object, and its associated // TransformGroup object, and attach it to the root of the // subgraph. Attach the view to the view platform. Transform3D t = new Transform3D(); t.set(new Vector3f(0.0f, 0.0f, 2.0f)); ViewPlatform vp = new ViewPlatform(); vpTrans1 = new TransformGroup(t); vpTrans1.addChild(vp); vpRoot.addChild(vpTrans1); vpRoot.addChild(scene); view1.attachViewPlatform(vp); // Attach the branch graph to the universe, via the // Locale. The scene graph is now live! locale.addBranchGraph(vpRoot); } }

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  • XNA, WPF light show visualizer

    - by Bgnt44
    HI all, I'm developing a software to control light show ( through DMX protocol ), i use C# and wpf to develop my main software (.net 4.0) To help people preview their show, i would like to make a live 3D visualizer... First, i thought that i could use wpf 3D to make the visualizer, but i need to work with light .. My main application should send property ( beam angle, orientation (X,Y), position(X,Y), Brush ( color,shape,effect)) to the 3D visualizer But i would like to be able to move light (position in the scene) by mouse during execution and had value in return... So .. Does XNA is the easiest way to doing that ? Can you help me for that : Generating light (orientation , bitmap like filter in front of light ) Dynamically moving object with mouse and get position in return Dynamically add or remove fixture All of your advice, sample, example are very welcome ... I don't espect to have a perfect result at the first time but i need to understand the main concepts for doing that Thank You !!

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  • Need advice on organizing two WPF applications within one Visual Studio solution

    - by Tim
    I have a WPF application (KaleidoscopeApplication) organized as follows: Solution (6 projects) Cryptography (DLL) Rfid (DLL) KaleidoscopeApplication (buildable "startup project") Basically, KaleidoscopeApplication contains a bunch of resources (sounds, images, etc) and your standard WPF junk (App.xaml, App.xaml.cs, other xaml and code). I need to create a new application that is very similar to Kaleidoscope, but I'm not sure of the best way to organize. This new app will need access to much of the same code and resources as Kaleidoscope. Preferably, I would like to create a new project in the solution, then simply use the "set as startup project" to pick which app I want to build. However, will I be able to access (share) the Resources folder of Kaleidoscope? I know I will be able to access much of the code if I simply add a reference to the project and include a "using Kaleidoscope". But the resources I'm not so sure about. Is this the right way to organize or am I asking for trouble in the future? Thanks in advance!

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  • WPF databinding update comboxbox2 based on selection change in combobox1 with MVVM

    - by cody
    I have a combo box that I have bound to a list that exists in my viewmodel. Now when a users makes a selection in that combo box I want a second combo box to update its content. So, for example, combobox1 is States and combobox2 should contain only the Zipcodes of that state. But in my case I don't have a predefined lists before hand for combobox2, I need to go fetch from a db. Also, if needed, I could get all the potential values for combobox2 (for each combobox1 value) before hand, but I'd like to avoiding that if I can. How do I implement in WPF and using MVVM? I'm fairly new to this whole wpf\databinding\mvvm world.

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  • How to exit a WPF app programmatically?

    - by j-t-s
    Hi All In the few years I've been using C# (WINFORMS), I've never used WPF. But now I love WPF, but I don't know how the hell I am supposed to exit my application when the user clicks on the Exit menu item from the File menu. Can somone please help me out!? I DID google this, and guess what? For such a Simple? thing... Nothing related came up. Thanks P.S. I have tried: this.Dispose(); this.Exit(); Application.ShutDown(); Application.Exit(); Application.Dispose(); ... Among many others. Nothing works.

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  • Binding scattered/overlapping images to a WPF Canvas

    - by bufferz
    I am porting a GDI application over to WPF, where I displayed several dozen images onto Form, then drew polygons, circles, rectangles, etc over the top of these images using GDI Pens and Brushes. I'm starting to get the hang of WPF binding and would like to store all of these images and markup graphics in my ViewModel. My VM contains an ObservableCollection of my custom DrawingEntitys, DrawingEntity contains DependencyProperties for BitmapSource, Height, Width, CanvasTopLeftY, and CanvasTopLeftX, that I update frequently in the collection. I know my binding is working, I just can't figure out how to bind and draw this collection onto a Canvas. I've played around with ItemsControl and ItemsSource to death, too many different ways to list here. I can display the DrawingEntity.Bitmaps onto the canvas but Canvas.Top won't bind to CanvasTopLeftY in the DrawingEntity, everything is overlapped at 0,0. I think I'm missing an obvious strategy. Any ideas?

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