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• WPF Animate a Maxtrix using interpolation

  - by Mark

  Im having a issue with my application that is using touch gestures to scale, translate and rotate my scene. I was using a TransformGroup which contained TranslateTransform, ScaleTransform and a RotateTransform but I could not get the movement correct, it always jumps and skips, so I moved to a MaxtrixTransform which I was able to use much easier to get my scene to be zoomable, rotatable and panable nicely. However, what I later found out was that you cannot animate smoothly (using interpolation) the values of a Matrix, for what reason I have no idea, but its part of the MSDN doco and the properties of the Matrix are not dependency properties anyways... Has anyone had any luck animating a maxtrix to make it smooth? The only idea(s) I have had is to animate a few different, custom DP which all have callbacks that I update the Matrix from OR To convert the Maxtix to a set of Transform object that I then animate and then afterwords convert back. Is there a smarter way to do this?

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• WPF closing child- closes parent-window

  - by Thomas Spranger

  i have the pretty same sample as mentioned here. Fast concluded: MainWindow closes when the last childwindow is closed. My Problem: I couldn't solve my problems with the described solutions. I can't produce a program where it als takes place. Only in one of my bigger progs. Maybe someone has an idea or knows any further steps. Thanks for reading - Thomas As requested here's a bit of code: This is the part in the MainWindow: bool editAfterSearch = false; Movie selectedMovie = (Movie)this.listView.SelectedItem; Movie backup = (Movie)selectedMovie.Clone(); if (new OnlineSearchWindow().EditMovieViaOnlineSearch(ref selectedMovie, out editAfterSearch)) { this.coverFlow.Update(selectedMovie); } And that's the part of the ChildWindow: public bool EditMovieViaOnlineSearch(ref Movie preset, out bool editAfter) { this.exitWithOk = false; this.editMovieAfterSearch = false; this.tbx_SearchTerm.Text = preset.Title; this.linkedMovie = preset; this.ShowDialog(); editAfter = editMovieAfterSearch; if (this.exitWithOk) { this.linkedMovie.CloneOnlineInformation(ref preset); preset.Bitmap = this.linkedMovie.Bitmap; return true; } else { return false; } }

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• How can I load a WPF (xaml) window inside of another WPF windows in a Panel?

  - by Sergio Tapia

  Is this possible? I used a Frame control and: show(ex:showwindow.xaml) But I get this error: root element is not valid for navigation

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• WPF ComboBox drop-down (data bound) values not changing

  - by Jefim

  I bind the ItemsSource of a ComboBox to an ObservableCollection<MyClass>. In code I change the collection (e.g. edit the MyClass.Name property). The problem: the change is not reflected in the dropdown box if the ComboBox, yet when I seled the item from the dropdown it is displayed correctly in the selected item box of the ComboBox. What's going on? :) PS MyClass has INotifyPropertyChanged implemented

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• create board for game with events support in WPF

  - by netmajor

  How can I create board for simple game, looks like for chess,but user could dynamically change number of column and rows? In cells I could insert symbol of pawn, like small image or just ellipse or rectangle with fill. This board should have possibility add and remove pawn from cells and move pown from one cell to another. My first idea was Grid. I do it in code behind, but it's hurt to implement events or everything in runtime create board :/ int size = 12; Grid board = new Grid(); board.ShowGridLines = true; for (int i = 0; i < size;i++ ) { board.ColumnDefinitions.Add(new ColumnDefinition()); board.RowDefinitions.Add(new RowDefinition()); } //komputer Rectangle ai = new Rectangle(); ai.Height = 20; ai.Width = 20; ai.AllowDrop = true; ai.Fill = Brushes.Orange; Grid.SetRow(ai, 0); Grid.SetColumn(ai,0); //czlowiek Rectangle hum = new Rectangle(); hum.Height = 20; hum.Width = 20; hum.AllowDrop = true; hum.Fill = Brushes.Green; Grid.SetRow(hum,size); Grid.SetColumn(hum,size); board.Children.Add(ai); board.Children.Add(hum); this.Content = board; It's a way to do this dynamically col and row change in XAML ? It's better way to implement that board create and implement events on move pawn from one cell to another ?

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• wpf working state

  - by taras.roshko

  Hi, I have a grid in my application. After user selects some files in ofdialog application processes some calculations. While app is making calculations it looks like it is not responding. How to display some picture and make main window in black&white while calculating? Maybe make some dp in MainWindow a la "IsBusy" and bind a popup with picture to it? How you implement this logic in yours apps?

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• C# WPF Apllication class

  - by hans

  my applicationen consists of App.cs/App.xaml and some other files. Everything is compiled to an exe file. However, I want a 2. application, which should reference the first one. In this Application is a class derived from App. But when I call the the Run() function I get an very stragne error in a xaml code of the first application, saying that some image files could not be loaded. I had a similar architecture when i was using Windows Forms and it worked fine.

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• How to create reusable WPF grid layout

  - by zendar

  I have a window with tab control and number of pages - tab items. Each tab item has same grid layout - 6 rows and 4 columns. Now, each tab item contains grid with row and column definitions, so almost half of XAML is definition of grids. How can I define this grid in one place and reuse that definition in my application? Template? User control? Besides 6x4, I have only two more grid dimensions that repeat: 8x4 and 6x6.

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• WPF: How to refresh a window while debugging?

  - by Qwertie

  I am debugging an algorithm that is being represented by a set of ViewModels. In order to debug this algorithm I would like to redraw the View while stepping through part of the algorithm. Is this possible? (I would prefer to just repaint, not do what they call "DoEvents" to process all events.)

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• How to display Bitmap Image in image control on WPF using C#

  - by Sam

  I want that when I double click on a row in Listview, it should display the image corresponding to that row. This row also contains the path of the image. I tried the following but it displays the same image for all rows because I have given the path for a specific image: private void ListViewEmployeeDetails_MouseDoubleClick(object sender, MouseButtonEventArgs e) { ImageSource imageSource = new BitmapImage(new Uri(@"C:\northwindimages\king.bmp")); image1.Source = imageSource; } Please suggest

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• WPF style problem with custom control and textbox-derived class

  - by Martin

  I had the following situation: main application has app.xaml, which sets the style for TextBox controls a custom control is implemented in a separate DLL, and uses several TextBox controls The main application's TextBox style is applied to the custom control's TextBox controls. Cool! My problem comes in because I need to use a class derived from TextBox in the custom control. Now the main app's TextBox style is no longer applied. Can the custom control DLL have something like "app.xaml" where I can set the style for all my derived TextBox controls? Or can the main application somehow set the style for all TextBox-derived classes? Thanks!

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• Difference between WPF and Winforms?

  - by stackuser1

  Spam...and more spam...

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• WPF MenuItem Content "Name"...

  - by Kyle

  Hi, I have a LOT of MenuItem(s), and I want to be able to change their "Content" so that it displays in the program. When I load up the program, their "Content Name" is set in a Setter I created.. but the only problem is that I have almost a hundred MenuItem objects, and I need their display names in the program to be different (not the setter's default). I could just create over 100 different "Setter"'s and change one line in them.. but that is very time consuming. Is there a simpler approach? I want to be able to do this in the XAML where I am declaring them. Is there a way to do this? I've been searching and trying different attempts, but nothing so far.. perhaps someone knows? Thanks

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• Forcing Arrange in a Custom WPF Canvas

  - by Alex Marshall

  Hello, I'm working on a project that involves creating a custom graphical editor. The graphical editor has multiple tabs, and I want to create a preview function that will show a popup with Bitmap previews of the content of each of the tabs. However, the problem I'm running into is that the content for each of the tabs must be arranged before a proper preview can be generated for it. This means going into each of the tabs to ensure that they're rendered and arranged. Then, and only then, do the previews get properly generated, otherwise the previews have a size of 0x0. Does anybody know how to force an arrange of a content control so that I can get a properly sized preview generated ?

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• WPF button template alignment not setting correctly

  - by Dave Colwell

  Hi guys, I have created a button template consisting of a border and a content presenter. A style is then wrapped around this template and applied to a button, when this button is used it is not carrying the values for horizontal and vertical alignment. In the designer the allignments are showing and the button is in the correct place, but when i run the program the button appears to have horizontal alignment = left and vertical alignment = right. Any ideas?

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• WPF Datagrid Column Width codebehind

  - by mikemuhl

  Hi, i would like to replace the following xaml code : <Custom:DataGridTextColumn Header=" " Width="*"/>in codebehind. This xaml code fills my header to the end with my style.. this is what i want to get |name | number | this area uses "mystyle" end of grid -| this is what i now get : |name | number | unstyled area! end of grid -| as u see, i would like to fill the unstyled area with my style, done this with xaml: now need in cb pls ;)

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• WPF ControlTemplate: AdornedElement not showing!

  - by Tau Sick

  <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="BalloonTextBox.MainWindow" x:Name="Window" Title="MainWindow" UseLayoutRounding="True" Width="640" Height="480" Border me!

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• Bind a WPF combobox and get selecteditem to a richtextbox

  - by Peter

  Hi, I am using a dataset on the server, in this dataset I have a datatable that calls a stored procedure and returns column names from three tables. I call this stored procedure using a web service. I manage to show all the column names in my combobox but when I want to click a button and insert selected column name into a richtextbox I get System.Data.DataRowView in the textbox instead. My code: 'the combobox 'if I don't have this textblock all the values are shown vertical instead of the normal horizontal lines 'the stored procedure SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE (TABLE_NAME = 'Customer') OR (TABLE_NAME = 'Invoices') OR (TABLE_NAME = 'Orders') 'the button Private Sub btnAddColumnNames_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles btnAddColumnNames.Click ' Add column names to the richtextbox Dim tr As New TextRange(rtbText.Selection.Start, rtbText.Selection.End) tr.Text = cboColumnNames.SelectedItem.ToString() rtbText.Focus() End Sub Any suggestions on how to get the selected text in the combobox to the richtextbox? Any help is appreciated.

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• Group panel of WPF ListBox

  - by rulestein

  I have a listbox that is grouping the items with a GroupStyle. I would like add a control at the bottom of the stackpanel that holds all of the groups. This additional control needs to be part of the scrolling content so that the user would scroll to the bottom of the list to see the control. If I were using a listbox without the groups, this task would be easy by modifying the ListBox template. However, with the items grouped, the ListBox template seems to only apply on a per group basis. I can modify the GroupStyle.Panel, but that doesn't allow me to add items to that panel. <ListBox> <ListBox.ItemsPanel> <ItemsPanelTemplate> <WrapPanel/> </ItemsPanelTemplate> </ListBox.ItemsPanel> <ListBox.GroupStyle> <GroupStyle> <GroupStyle.Panel> <ItemsPanelTemplate> <VirtualizingStackPanel/> **<----- I would like to add a control to this stackpanel** </ItemsPanelTemplate> </GroupStyle.Panel> <GroupStyle.ContainerStyle> <Style TargetType="{x:Type GroupItem}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type GroupItem}"> <Grid> <ItemsPresenter /> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </GroupStyle.ContainerStyle> </GroupStyle> </ListBox.GroupStyle> This should give an idea of what I need to do:

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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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• remove eventhandler from wpf scrollviewer

  - by rubentjeuh

  I've got this: <ScrollViewer x:Name="svBegin" CanContentScroll="True"> <Grid x:Name="gGegevensGrid" KeyDown="gGegevensGrid_KeyDown" ScrollViewer.VerticalScrollBarVisibility="Visible"></Grid> </ScrollViewer> As you can see I've got a KeyDown eventhandler on the grid. But when I press the downkey, the scrollviewer scrolls down. Even when I try this, it doesn't work: svBegin.KeyDown += new KeyEventHandler(svBegin_KeyDown); svBegin.KeyDown -= new KeyEventHandler(svBegin_KeyDown); Anybody who knows how to solve this problem?

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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: How to redefine CanExecute method of ApplicationCommands

  - by Nike

  I use standard Cut, Copy and Paste commands (which is part of ApplicationCommands class). Is it possible to redefine CanExecute method? Please give me a piece of C# code.

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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 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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