wpf

  1. S

    Responding to context menu.

    I have a context menu in a view that calls the correct handler, but the command parameter is not being passed. <TextBlock DockPanel.Dock="Left" Margin="0,3,1,0" VerticalAlignment="Center"> <TextBlock.ContextMenu> <ContextMenu>...
  2. S

    Question Emergency Services Project

    Hello everyone, I am developing a project for the management of emergency vehicles, as you can see from the structure visible in the image there is a server and five clients, with many accesses to the server, I have now thought to avoid giving the access to the database to dozens of users to use...
  3. W

    Resolved How do I adjust the window size to the monitor resolution?

    Hello, I am currently creating a recipe book - app. I have set the size of the MainWindow to 2560 x 1440. Now I would like to change the size of the MainWindow to a dynamic resolution in order to run my application on any scrrensize without cutting it off. So it automatically fills out the whole...
  4. TB007

    Question Why is my view not updating after Add/Delete operations on database?

    I have a fairly simple WPF app which primarily has 2 datagrid's in two different tabitem's. The datagrid in 1st tabitem has the itemssource PendingBills which is an ICollectionView and it shows some filtered data as per some basic logic The datagrid in 2nd tabitem has the itemssource AllBills...
  5. S

    Question Xaml layout problem

    Hi everyone, I'm making a window, the first image you see is the visual studio editor, the second the program started, but why the heck it destroys the whole layout .. I can't understand if it's a problem with the size of the objects , many are not even displayed 😭 <Window...
  6. D

    Best way to add items from a database to both a combobox and datagrid in WPF...

    Hi, I'm totally new to MVVM pattern in WPF and even after going through a lot of posts and tutorials on the internet still struggling to fully grasp it. Anyways, here is what I'm trying to do, I have a SQLite database table with multiple columns. When I run the WPF app I want to fill a datagrid...
  7. dqurve

    Question Display and Drawing custom shape on pdf file

    I've been researching how I could open and display a PDF in WPF, and once it's open, draw on top of it. I have 2 panels, 1 that simulates the Treeview of the pdfs that I am opening and the other panel is where it is displayed, something like the one in the image, obviously it does not have...
  8. M

    How to draw the user's attention only to some items of a ListBox

    I wonder whether it is possible to highlight or change the color of the text or place a symbol (for example "!") or something else to attract the user's attention only on some items of the rightmost ListBox in the attached GUI. The reason is to reduce the user's time devote to double-checking...
  9. M

    Erratic behavior of TextBox "TextChanged" event

    I have inserted in the GUI a TextBox. It must hold a number between 0 and 1 that represents a lower threshold for accepting a structure name guessed by the Dice coefficient. I have set a default but the user can edit the threshold. Therefore I have to check the number entered is between 0 and...
  10. M

    How to use a ComboBox as a dropdown menu

    I have to show a list of strings (Trial names) that are fetched from a PostgreSQL database. The number of strings is only known at runtime. I have implemented that through a ComboBox as follows: <ComboBox x:Name="TrialDB" Grid.Row="1" Grid.Column="1" MinWidth="100"...
  11. M

    ListBox_Selection_Changed triggered by clearing its content

    When the user changes his/her mind and selects another item (a CT scan) of a ListBox, I need to erase the content of another three ListBoxes. I do that through the following statements: StructSets.ItemsSource = null; StructSets.Items.Clear(); StructSets.Items.Refresh()...
  12. M

    Resolved ListBox whose items can be edited / discarded /accepted

    I would appreciate some help in implementing the following with WPF. I need to have a ListBox displaying a list of strings but some may be empty strings. Each ListBox item can be edited, discarded, or accepted. Therefore, besides the editable ListBox I need some other type of WPF control that...
  13. M

    Resolved how to best use "public"read-write properties of event-driven applications

    I am trying to convert a working Console UI application into a WPF one. I use an s/w library from Varian Medical Systems, called Velocity API, whose documentation is scarce and somewhat misleading. Velocity API hardcoded logic is built on context. My Console UI application calls several...
  14. J

    Filtering data grid causes UI freeze

    Hi, I have a small WPF application which gets some data (~300 rows) from an API and gets displayed in a DataGrid. Up to this point everything works well. Some Header-columns of the DataGrid have nested textboxes, which should serve as search-boxes. I bound their text to a property in my...
  15. mariodeghetto

    I will publish 3 books on C# (free preview + early bird edition)

    Hello, everyone! Excuse me for taking the liberty of asking you for help with a publishing project I have started. If possible, I would like to ask you to publish a post on your blog or in your technical community, indicating this link: (Free preview) My new book "Programming in C# – Basic...
  16. M

    How to Bind FontSize of a TextBlock from two different sources in WPF?

    Due to design purpose I use the fluid Layout which is mainly made by Grid.Row definition. I want to adjust my WPF application to run smoothly on every monitor that's why I use the DPI Decorator class. And this DPI Decorator is perfectly working that means the screen UI components are perfectly...
  17. Miles

    A question on architecture

    Hello good people. New here. First post. First up, I am by no means a "professional" developer. I have written quite a few desktop applications in Python Qt, VB.NET and C# WinForms, Java Swing (many years ago), and a whole bunch of code to automate host applications with VBA (Excel, Access...
  18. S

    Setting SelectedValue doesn't update combobox

    Hi, I have problems getting the combobox to work. I have a usercontrol with an listview and some controls. Everything works fine, when not using the combobox. Each time I click on one row in the ListView it should show in the controls (textboxes, labels and so on). The list in the listview is...
  19. B

    Removing treeviewitem using MVVM pattern in WPF application

    I'm making a file explorer app using MVVM pattern in C# WPF. Right now I want to implement watcher events that are responsible for adding, removing and renaming items from treeview. I already have adding, and partially renaming (I think that in this case I have to combine deleting and adding)...
  20. redexception

    Create a new window in WPF

    Hi, I've created a SQL Loginsystem (doesn't matter, but okay ^^). When someone clicks on the register function, a new window should appear. But how do I do that ? And how can I edit this window ? Would there appear another window.xaml? Greetings from the US.
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