c# & wpf

Hello, I have problem because I have no idea how to bind Command to the button which is inside ToDo Task component. Here is a code example <Grid Background="#FF333333"> <Grid.RowDefinitions> <RowDefinition Height="50"/> <RowDefinition Height="50"/>...

I tried to integrate an example I found on the internet with my application but it doesn't work. Basically. my GUI contains a TextBox where the user can enter a value between 0 and 1. My goal is to check that the entered value is in the range [0,1] and also to have the property DiceThreshold...

The Idea is that when I start the application 2 windows pop up. On mainwindow I have button and on window1 I have label and when I press the button the label color should change. This is what Far have tried so far but it didn't work. What am I doing wrong ? and how to make it work ? Note: in...

The Idea is that when I start the application 2 windows pop up. On mainwindow I have button and on window1 I have label and when I press the button the label color should change. This is what Far have tried so far but it didn't work. What am I doing wrong ? and how to make it work ? Note: in...

I am working with patient data in a hospital. A patient can have multiple CT scans. Every CT scan may have several linked structure-sets Every structure-set contains several structures. I managed to display a list of structure names directly from a PostgreSQL table. The next step is to...

I have made a custom wpf Control and I have been trying to create a method of Position Tweening to it. I have followed the Microsoft Docs explanations but to no avail. Can someone tell me why does this code don`t work? NameScope.SetNameScope(_Rectangle, new NameScope()); RectAnimation a = new...

The .xaml code: <Grid Grid.Row="0" Grid.Column="0"> <Canvas x:Name="gCanvasPlot0" Width="500" Height="150" ... /> </Grid> <Grid Grid.Row="1" Grid.Column="0"> <Canvas x:Name="gCanvasPlot1" Width="500" Height="150" ... /> </Grid> The .cs code: //------------------------------ ...

Hi, I'm doing my project and I have now in several hours looked at it but cann't finde the error. I have 2 views 1 view is normal mode, where there is a combobox where it should be updated when choosing the tabItem is chosen. 2. View is new (creating a new item). Here is also a combobox with...

Hi I have the following TabControl with TabItems. I need to make som code when the Selection changes to another tab. First time I run the app I am going into the SelectionChanged. But then when choosing a new tab nothing happens at all. I want to go into the code each time, I hit the tabs. What...

I have a Datagrid bound to Datatable through Dependency property. I am unable to retrieve changes I make in datagrid even when I have set binding mode as two way. What are the best possible ways to update changes back to Source DataTable when dataGrid is edited? I know I can use...

Hey, Coders Programming my virtual assistant I have encountered this error - SAPI does not implement phonetic alphabet selection. I have reviewed the solution in forums and I have found that I have to add this line of code gb.Culture = new System.Globalization.CultureInfo("es-ES"); I have...

Hi, here is my short code in MS VS 2019 C# WPF - MVVM, can someone please explain me: 1/ where is pointed my code to after "return _SaveCommand;" which is placed to "public ICommand SaveCommand" property ? It is classic MVVM. 2/ And who is caller of "CommandManager.RequerySuggested += value;"...

Hi, I have problems to find the correct syntax to get a single result of a single row. I get the row (categories) and I can see in this row there is a CategoryIsObsolete field (it is that value I want) But when making af FirstOrDefault query the Category result is null - and I do not know why...

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.

This is a WPF application, using a Data Grid with Date Picker. The goal is to click on the calendar, select a date, then the Data Grid goes in edit mode so as soon as I click on another cell, the Update is done on the database and the row is added on the grid, that part is working. But, when I...

I am working with RelayCommands and a MessageBus. I want to write a learning program. I have three windows: 1. Learning Tab -> Here I choose which List of Cards I want to learn and here I think I should write the for loop 2. Question -> The first question of the list of cards I gave to the for...

Hi, I am studying C#/WPF. I am trying to create child windows upon click event as follows private void NewWindow(object sender, RoutedEventArgs e) { Window newWindow = new Window(); newWindow.Owner = this; newWindow.Title = "Window 1"...

I have a class that describes the level of subordination of departments: public class SeniorPosition : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; private string managementPositionName; private string...

I have an observablecollection of class type as follows: public ObservableCollection<selectedLevel> selectedLevels { get; set; } selectedLevels = new ObservableCollection<selectedLevel>(); public class selectedLevel { public string Level { get; set; } public...

Hey there) Was making very simple stock prediction app (Simple Colege Project). For feracast i used Microsoft ML Time Series Model. It worked good but i noticed when i make predictions for data with big values like 1700 or 3800 it makes very incorrect predictions. For instance if csv file has...