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  • how to build a simple database application using WPF

    Build a simple database application with WPF that can display data in GridView and can perform ADD, UPDATE and DELETE operations on SQL server database.  read moreBy Kirtan PatelDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • WPF Wonders: Using DataTemplates

    WPF data templates let you determine the pieces a repetitive control uses to display its items. Learn some unique and interesting ways to use data templates for displaying the items in ListBoxes, ComboBoxes, and ListViews.

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  • Activating a pane in the Docking control for WPF and Silverlight

    Telerik Docking control for Silverlight and WPF. In this blog post I will guide you through the implementation of a simple method that accomplishes this task and an example in which you could try it out. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Sample WPF application consuming Bing Maps Web Services

    Here is a sample WPF application, that consumes GeocodeService, SearchService, ImageryService and RouteService that are part of Bing Maps web service...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Silverlight Grid Layout is pain

    - by brainbox
     I think one of the biggest mistake of Silverlight and WPF is its Grid layout.Imagine you have a data form with 2 columns and 5 rows. You need to place new row after the first one. As a result you need to rewrite Grid.Rows and Grid.Columns in all rows belows. But the worst thing of such approach is that it is static. So you need predefine all your rows and columns. As a result creating of simple dynamic datagrid or dataform become impossible... So the question if why best practices of HTML and Adobe Flex were dropped????If anybody have tried to port Flex Grid layout to silverlight please mail me or drop a comment.

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  • Why don’t UI frameworks use generics?

    - by romkyns
    One way of looking at type safety is that it adds automatic tests all over your code that stop some things breaking in some ways. One of the tools that helps this in .NET is generics. However, both WinForms and WPF are generics-free. There is no ListBox<T> control, for example, which could only show items of the specified type. Such controls invariably operate on object instead. Why are generics and not popular with UI framework developers?

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  • How to name an subclass that add a minor, detailed thing?

    - by Louis Rhys
    What is the most concise (yet descriptive) way of naming a subclass that only add a specific minor thing to the parent? I encountered this case a lot in WPF, where sometime I have to add a small functionality to an out-of-the-box control for specific cases. Example: TreeView doesn't change the SelectedItem on right-click, but I have to make one that does in my application. Some possible names are TreeViewThatChangesSelectedItemOnRightClick (way too wordy and maybe difficult to read because there is so many words concantenated together) TreeView_SelectedItemChangesOnRightClick (slightly more readable, but still too wordy and the underscore also breaks the normal convention for class names) TreeViewThatChangesSIOnRC (non-obvious acronym), ExtendedTreeView (more concise, but doesn't describe what it is doing. Besides, I already found a class called this in the library, that I don't want to use/modify in my application). LouisTreeView, MyTreeView, etc. (doesn't describe what it is doing). It seems that I can't find a name which sounds right. What do you do in situation like this?

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  • Extending Blend for Visual Studio 2013

    - by Chris Skardon
    Originally posted on: http://geekswithblogs.net/cskardon/archive/2013/11/01/extending-blend-for-visual-studio-2013.aspxSo, I got a comment yesterday on my post about Extending Blend 4 and Blend for Visual Studio 2012 asking if I knew how to get it working for Blend for Visual Studio 2013.. My initial thoughts were, just change the location to get the blend dlls from Visual Studio 11.0 to 12.0 and you’re all set, so I went to do that, only to discover that the dlls I normally reference, well – they don’t exist. So… I’ve made a presumption that the actual process of using MEF etc is still the same. I was wrong. So, the route to discovery – required DotPeek and opening a few of blends dlls.. Browsing through the Blend install directory (./Microsoft Visual Studio 12.0/Blend/) I notice the .addin files: So I decide to peek into the SketchFlow dll, then promptly remember SketchFlow is quite a big thing, and hunting through there is not ideal, luckily there is another dll using an .addin file, ‘Microsoft.Expression.Importers.Host’, so we’ll go for that instead. We can see it’s still using the ‘IPackage’ formula, but where is that sucker? Well, we just press F12 on the ‘IPackage’ bit and DotPeek takes us there, with a very handy comment at the top: // Type: Microsoft.Expression.Framework.IPackage // Assembly: Microsoft.Expression.Framework, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a // MVID: E092EA54-4941-463C-BD74-283FD36478E2 // Assembly location: C:\Program Files (x86)\Microsoft Visual Studio 12.0\Blend\Microsoft.Expression.Framework.dll Now we know where the IPackage interface is defined, so let’s just try writing a control. Last time I did a separate dll for the control, this time I’m not, but it still works if you want to do it that way. Let’s build a control! STEP 1 Create a new WPF application Naming doesn’t matter any more! I have gone with ‘Hello2013’ (see what I did there?) STEP 2 Delete: App.Config App.xaml MainWindow.xaml We won’t be needing them STEP 3 Change your application to be a Class Library instead. (You might also want to delete the ‘vshost’ stuff in your output directory now, as they only exist for hosting the WPF app, and just cause clutter) STEP 4 Add a reference to the ‘Microsoft.Expression.Framework.dll’ (which you can find in ‘C:\Program Files\Microsoft Visual Studio 12.0\Blend’ – that’s Program Files (x86) if you’re on an x64 machine!). STEP 5 Add a User Control, I’m going with ‘Hello2013Control’, and following from last time, it’s just a TextBlock in a Grid: <UserControl x:Class="Hello2013.Hello2013Control" 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" d:DesignHeight="300" d:DesignWidth="300"> <Grid> <TextBlock>Hello Blend for VS 2013</TextBlock> </Grid> </UserControl> STEP 6 Add a class to load the package – I’ve called it – yes you guessed – Hello2013Package, which will look like this: namespace Hello2013 { using Microsoft.Expression.Framework; using Microsoft.Expression.Framework.UserInterface; public class Hello2013Package : IPackage { private Hello2013Control _hello2013Control; private IWindowService _windowService; public void Load(IServices services) { _windowService = services.GetService<IWindowService>(); Initialize(); } private void Initialize() { _hello2013Control = new Hello2013Control(); if (_windowService.PaletteRegistry["HelloPanel"] == null) _windowService.RegisterPalette("HelloPanel", _hello2013Control, "Hello Window"); } public void Unload(){} } } You might note that compared to the 2012 version we’re no longer [Exporting(typeof(IPackage))]. The file you create in STEP 7 covers this for us. STEP 7 Add a new file called: ‘<PROJECT_OUTPUT_NAME>.addin’ – in reality you can call it anything and it’ll still read it in just fine, it’s just nicer if it all matches up, so I have ‘Hello2013.addin’. Content wise, we need to have: <?xml version="1.0" encoding="utf-8"?> <AddIn AssemblyFile="Hello2013.dll" /> obviously, replacing ‘Hello2013.dll’ with whatever your dll is called. STEP 8 We set the ‘addin’ file to be copied to the output directory: STEP 9 Build! STEP 10 Go to your output directory (./bin/debug) and copy the 3 files (Hello2013.dll, Hello2013.pdb, Hello2013.addin) and then paste into the ‘Addins’ folder in your Blend directory (C:\Program Files\Microsoft Visual Studio 12.0\Blend\Addins) STEP 11 Start Blend for Visual Studio 2013 STEP 12 Go to the ‘Window’ menu and select ‘Hello Window’ STEP 13 Marvel at your new control! Feel free to email me / comment with any problems!

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  • Creating a XAML Tile Control

    - by psheriff
    One of the navigation mechanisms used in Windows 8 and Windows Phone is a Tile. A tile is a large rectangle that can have words and pictures that a user can click on. You can build your own version of a Tile in your WPF or Silverlight applications using a User Control. With just a little bit of XAML and a little bit of code-behind you can create a navigation system like that shown in Figure 1. Figure 1: Use a Tile for navigation. You can build a Tile User Control with just a little bit of XAML and...(read more)

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  • i'm new in programming and need experts help [on hold]

    - by Hatem
    i'm pleased to find place full of experts who can help me i'm new in programming ,and i went to course about C# basics + SQL i want to learn WPF to work on my own desktop application project i dont know how to start ..i'm lost sometimes i open VS2012 put contols here and there ..then i feel i miss information so i stop feel depressed other times i open books like WPF4.5 unleashed and after while i get bored of reading and complexed expressions i face other times i go to youtube watch some videos after all i dont do anything right .. i dont know how to start what are right steps to be professional in programming? should i revise what i took in C# basics and sql?? i wish you provide me with clear steps to begin successfully i'm sorry if my question is open or in wrong place forgive me thank you all

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  • WPF DataGrid ComboBox Column: Propagating Header Combobox throughout column...

    - by LostKaleb
    Hey there! Here's my question: I've got a Datagrid in WPF and I have a first column that is a DataGridComboBoxColumn. What I'd like to do is to have a header for that column also with a combobox: altering the header with propagate throughout the column. I can get this done visually, but when I submit the data, the list that is bound with the Datagrid does not carry the new combobox values. <dg:DataGridComboBoxColumn SelectedItemBinding="{Binding BIBStatus}" ItemsSource="{Binding Source={StaticResource typeStatus}}" Width="0.20*"> <dg:DataGridComboBoxColumn.HeaderTemplate> <DataTemplate> <StackPanel> <TextBlock Text="Built-In Bridge"/> <ComboBox SelectedItem="{Binding BIBStatus}" SelectionChanged="ComboBox_SelectionChanged" ItemsSource="{Binding Source={StaticResource typeStatus}}"/> </StackPanel> </DataTemplate> </dg:DataGridComboBoxColumn.HeaderTemplate> </dg:DataGridComboBoxColumn> In the ComboBox_SelectionChanged I have the following code: DataGridColumn comboCol = this.gridResults.Columns[0]; for (int i = 0; i < this.gridResults.Items.Count; i++) { ComboBox myCmBox = (comboCol.GetCellContent(this.gridResults.Items[i]) as ComboBox); myCmBox.SelectedValue = ((ComboBox)sender).SelectedValue; } When I submit the data, I submit the list that is DataContext to the Datagrid; if I change the value of the first column addressing a row at a time, i.e. clicking the cell with the combobox in each row, the values are propagated to the list in DataContext, however if I change the value of the first column by the header it does not. Can anyone tell me what I'm missing? I'm guessing it's the way I affect each row, but I've tried SelectedValue, SelectedItem and SelectedIndex... all to no avail. Thanks in advance...

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  • How can I sort a DataGridTemplateColumn on a WPF Toolkit DataGrid?

    - by Kilhoffer
    I have a WPF Toolkit DataGrid with one DataGridTemplateColumn. I've specified in a grid attribute that I wish all columns to be sortable, but the DataGridTemplateColumn won't allow it. All other columns do allow sorting. I've even tried explicitly setting CanUserSort to true for that column, but no luck. Is it even possible to sort a template column? I've provided a custom sorter that works for all columns, but the header won't allow a sort click. <Controls:DataGrid ItemsSource="{Binding Events}" AutoGenerateColumns="False" CanUserSortColumns="True" CanUserReorderColumns="False" Sorting="DataGrid_Sorting" x:Name="EventsGrid"> <Controls:DataGrid.Columns> <Controls:DataGridTemplateColumn Header="Type" Width="42" CanUserResize="False"> <Controls:DataGridTemplateColumn.CellTemplate> <DataTemplate> <Image Source="{Binding EventTypeImage, Mode=OneWay}" HorizontalAlignment="Center" Width="16"/> </DataTemplate> </Controls:DataGridTemplateColumn.CellTemplate> </Controls:DataGridTemplateColumn> <Controls:DataGridTextColumn Header="Source" Binding="{Binding Source, Mode=OneWay}" /> <Controls:DataGridTextColumn Header="Details" MinWidth="175" Binding="{Binding Details, Mode=OneWay}" /> <Controls:DataGridTextColumn Header="Timestamp" MinWidth="175" Binding="{Binding Timestamp, Mode=OneWay}" IsReadOnly="True"/> </Controls:DataGrid.Columns> </Controls:DataGrid>

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  • How create a Firefox-like search textbox in WPF?

    - by Simon
    Hey there. I'm writing an application in WPF using the MVVM-pattern and will really often use TextBoxes. I don't want to use labels for the user to know user what the text box is for, i.e. I don't want something like this: <TextBlock> Name: </TextBlock> <TextBox /> Instead, I would like the TextBox to contain its own label. Statically, you would express it like this: <TextBox>Name</TextBox> If the cursor is displayed in the textbox, i.e. the TextBox gains focus, I want the description text to disappear. If the TextBox is left empty and it loses the focus, the description text should be shown again. It's similar to the search textbox of StackOverflow or the one of Firefox. (please tell me if your not sure what I mean). One TextBox's label may change at runtime, dependending on e.g. a ComboBox's selected element or a value in my ViewModel. (It's like in Firefox's search TextBox, if you select google from the search engins' menu, the TextBox's label changes to "Google", if you select "Yahoo" its set to "Yahoo"). Thus I want to be able to bind the label's content. Consider that I may already have a Binding on the Text-Property of the TextBox. How can implement such a behaviour and make it reusable for any of my TextBox's? Code is welcome but not needed; a description of what to do is enough. Thank you in advance.

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  • Access to DataTemplate Control of WPF Toolkit DataGridCell at Runtime, How?

    - by LukePet
    I have a DataGrid defined with WPF Toolkit. The CellEditingTemplate of this DataGrid is associated at runtime with a custom function that build a FrameworkElementFactory element. Now I have to access to control that is inserted inside DataTemplate of CellEditingTempleta, but I do not know how to do. On web I found a useful ListView Helper... public static class ListViewHelper { public static FrameworkElement GetElementFromCellTemplate(ListView listView, Int32 column, Int32 row, String name) { if (row >= listView.Items.Count || row < 0) { throw new ArgumentOutOfRangeException("row"); } GridView gridView = listView.View as GridView; if (gridView == null) { return null; } if (column >= gridView.Columns.Count || column < 0) { throw new ArgumentOutOfRangeException("column"); } ListViewItem item = listView.ItemContainerGenerator.ContainerFromItem(listView.Items[row]) as ListViewItem; if (item != null) { GridViewRowPresenter rowPresenter = GetFrameworkElementByName<GridViewRowPresenter>(item); if (rowPresenter != null) { ContentPresenter templatedParent = VisualTreeHelper.GetChild(rowPresenter, column) as ContentPresenter; DataTemplate dataTemplate = gridView.Columns[column].CellTemplate; if (dataTemplate != null && templatedParent != null) { return dataTemplate.FindName(name, templatedParent) as FrameworkElement; } } } return null; } private static T GetFrameworkElementByName<T>(FrameworkElement referenceElement) where T : FrameworkElement { FrameworkElement child = null; for (Int32 i = 0; i < VisualTreeHelper.GetChildrenCount(referenceElement); i++) { child = VisualTreeHelper.GetChild(referenceElement, i) as FrameworkElement; System.Diagnostics.Debug.WriteLine(child); if (child != null && child.GetType() == typeof(T)) { break; } else if (child != null) { child = GetFrameworkElementByName<T>(child); if (child != null && child.GetType() == typeof(T)) { break; } } } return child as T; } } this code work with the ListView object but not with the DataGrid object. How can use something like this in DataGrid?

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  • How do you override the opacity of a parent control in WPF?

    - by Metro Smurf
    When you set the opacity on a Grid in WPF, all the child elements appear to inherit its Opacity. How can you have a child element not inherit the parent's opacity? For example, the following parent grid has one child grid in the middle with a background set to red, but the background appears pinkish because of the parent's opacity. I'd like the child grid to have a solid color, non-transparent background: <Grid x:Name="LayoutRoot"> <Grid Background="Black" Opacity="0.5"> <Grid.RowDefinitions> <RowDefinition Height="0.333*"/> <RowDefinition Height="0.333*"/> <RowDefinition Height="0.333*"/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="0.333*"/> <ColumnDefinition Width="0.333*"/> <ColumnDefinition Width="0.333*"/> </Grid.ColumnDefinitions> <-- how do you make this child grid's background solid red and not inherit the Opacity/Transparency of the parent grid? --> <Grid Grid.Column="1" Grid.Row="1" Background="Red"/> </Grid> </Grid>

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  • Why is my WPF splash screen progress bar out of sync with the execution of the startup steps?

    - by denny_ch
    Hello, I've implemented a simple WPF splash screen window which informs the user about the progress of the application startup. The startup steps are defined this way: var bootSequence = new[] { new {Do = (Action) InitLogging, Message = "Init logging..."}, new {Do = (Action) InitNHibernate, Message = "Init NHibernate..."}, new {Do = (Action) SetupUnityContainer, Message = "Init Unity..."}, new {Do = (Action) UserLogOn, Message = "Logon..."}, new {Do = (Action) PrefetchData, Message = "Caching..."}, }; InitLogging etc. are methods defined elsewhere, which performs some time consuming tasks. The boot sequence gets executed this way: foreach (var step in bootSequence) { _status.Update(step.Message); step.Do(); } _status denotes an instance of my XAML splash screen window containing a progress bar and a label for status information. Its Update() method is defined as follows: public void Update(string status) { int value = ++_updateSteps; Update(status, value); } private void Update(string status, int value) { var dispatcherOperation = Dispatcher.BeginInvoke( DispatcherPriority.Background, (ThreadStart) delegate { lblStatus.Content = status; progressBar.Value = value; }); dispatcherOperation.Wait(); } In the main this works, the steps get executed and the splash screen shows the progress. But I observed that the splash screen for some reasons doesn't update its content for all steps. This is the reason I called the Dispatcher async and wait for its completion. But even this didn't help. Has anyone else experienced this or some similar behaviour and has some advice how to keep the splash screen's update in sync with the execution of the boot sequence steps? I know that the users will unlikely notice this behaviour, since the splash screen is doing something and the application starts after booting is completed. But myself isn't sleeping well, because I don't know why it is not working as expected... Thx for your help, Denny

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  • How to HitTest in a WPF Grid Panel to find column index.

    - by John
    Hi. We need to create a "timeline" feature where a user is allowed to drag and draw "time spans" into a WPF grid (we thought this better than a Canvas since it has resizing capabilities). Each span spans multiple columns, but only one row. We utilize the PreviewMouseDown/Up/Move events to see when the user clicks, drags, and releases the mouse. On the "Down" we create a new rectangle and on the "Move" we resize the rectangle, settings its ColumnSpan property to the correct value every time the mouse enteres the next column. At this point the grid has 48 1-star-sized columns. How do we find out which column the user has clicked on? Right now we are unable to find the column using the VisualTreeHelper.HitTest function. We would like to position the rectangle correctly via Grid.SetColumn(rect, X) and then resize it as needed using Grid.SetColumnSpan(rect, Y) Has anyone done something like this before and can help us? Or, is there a better way to draw what we need? Thanks.

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  • [WPF] How to register to/listen to richtextbox command's?

    - by Liewe
    I'm creating a simple editor within our application using the WPF RichTextBox. Above it I've added the reguslar buttons like Bold, Italic, etc. These buttons use the RichTextBox's commands to set these properties, but next to these buttons, the commands also get send with CTRL+B, CTRL+I, etc. I want these buttons to represent the current state of the RichTextBox at the cursor. I already found out how to get this state and it works when I update this state on the SelectionChanged event. This event ofcourse isn't fired when Bold is toggled so there is no direct feedback. I would like to know if there is a way to listen to the commands being called, without affecting its original behaviour or some other ideas to solve my problems. I tried listening to the command the following way: CommandBinding boldBinding = new CommandBinding(EditingCommands.ToggleBold, CommandExecuted); _richTextBox.CommandBindings.Add(boldBinding); and private void CommandExecuted(object sender, ExecutedRoutedEventArgs e) { UpdateProperties(); e.Handled = false; } This did update the properties, but the RichTextBox didn't seem to receive the command anymore. I also tried to make my own commands on the control containing the RichTextBox, but when CTRL+B is pressed when the RichTextBox has focus, the original RichTextBox commands are called instead of the new one. Many thanks in advance! Liewe

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  • [WPF] How to register to/listen to richtextbox commando's?

    - by Liewe
    I'm creating a simple editor within our application using the WPF RichTextBox. Above it I've added the reguslar buttons like Bold, Italic, etc. These buttons use the RichTextBox's commands to set these properties, but next to these buttons, the commands also get send with CTRL+B, CTRL+I, etc. I want these buttons to represent the current state of the RichTextBox at the cursor. I already found out how to get this state and it works when I update this state on the SelectionChanged event. This event ofcourse isn't fired when Bold is toggled so there is no direct feedback. I would like to know if there is a way to listen to the commands being called, without affecting its original behaviour or some other ideas to solve my problems. I tried listening to the command the following way: CommandBinding boldBinding = new CommandBinding(EditingCommands.ToggleBold, CommandExecuted); _richTextBox.CommandBindings.Add(boldBinding); and private void CommandExecuted(object sender, ExecutedRoutedEventArgs e) { UpdateProperties(); e.Handled = false; } This did update the properties, but the RichTextBox didn't seem to receive the command anymore. I also tried to make my own commands on the control containing the RichTextBox, but when CTRL+B is pressed when the RichTextBox has focus, the original RichTextBox commands are called instead of the new one. Many thanks in advance! Liewe

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