light | making wheels is one of the better ways | Application Framework library

I have a WPF app, linked to a SQL-server. I am using the MVVM-light package (I do actually have Prism.Core installed, but I'm not sure if I'm using it or not.... new to MVVM).

There's a DataGrid, bound to an ObservableCollection. I have been trying to implement the PropertyChangedEventHandler, but I can't seem to get it to work.

I have a Delete button bound, and I am able to remove rows, but when I re-open the form, the changes does not carry over.

I tried to change the binding-mode for the DataGrid from OneWay to TwoWay. With OneWay, the changes does not carry over when I re-open the form. With TwoWay, I get this error message when opening the child form (which contains the DataGrid):

System.InvalidOperationException: 'A TwoWay or OneWayToSource binding cannot work on the read->only property 'licenseHolders' of type 'Ridel.Hub.ViewModel.LicenseHoldersViewModel'.'

So, If I then add a set; to my public ObservableCollection licenseHolders { get; }, the program runs, but the previous problem persists, like it did when there was a OneWay mode configuration on the DataGrid.

What do I need to do to get this to work without communicating directly with the Sql-server, which would defy the whole point of using this methodology in the first place?

In tkinter I have made a notepad and also added a scrollbar to this notepad. The problem is when I click on the scrollbar (not using any arrow keys nor mouse scroll wheel)

I have tried google but I'm not the best at finding the right websites.

Heres the code to the notepad

Hello I'm having trouble changing my Logo depending on the Theme. In Dark Theme I can't see the black outlines of my logo, whilst I can on white background in light theme mode.

Here's the main.dart Code Line:

I'm building a vue app where user input data that I store in mongo database. One of the form elements is a ckeditor. When the user inputs data everything works fine.
Now the problem is when I make an API call to get the ckeditor text that user did input, I receive plein string text that I can't convert to html element.

Here's my code

I have a requirement which is as follows:

Variable Group A, has 7 set of key=value pairs Variable Group B, has 7 set of key=value pairs.

In both cases keys are the same, values are only different.

I am asking from the user, the value of be injected in variable group B, user provides me the variable group A name.

Code snippet to perform such update is as below:

Created a server.js which indicates to index.html file.(server.js and index.html locates on the same folder). In that html I couldn't use any styling from external css file or any assests from local storage. But inline css & images from internet is working fine.

server.js

so I have a button to create/ append step div and each step has an add action button element.

Question: how do I append action in a specific step for example if I add new action in step 2 then it will only create a new action in step 2

Here is the link to what i did https://jsfiddle.net/noobnoob121212/306boevh/7/

so what i did to create new step is :

I'm creating 2 pages (Summary and Cycles pages) using react.js.

On the Summary page, there is a column named CN that every item links to the Cycles page.

Summary page has a path /route/summary/location=abc and Cycles page has a path /route/cycle/location=abc/deviceId=4410

For example, if I click the value from CN column in the first row of the table inside the Summary page, I will be redirected to the Cycles page with the path /route/cycle/location=abc/deviceId=4410.

In the Summary page, I use https://github.com/react-bootstrap-table/react-bootstrap-table2 for the table component and I use a columnRenderer function inside columns.js to render a custom item inside the table like this one:

How can I put the pathname (example "abc") to a Link component inside cnColumnRenderer function in columns.js?

Summary page with the path: /route/summary/location=abc

Cycles page with the path: /route/cycle/location=abc/deviceId=4410

Error because of invalid hook call while rendering the Summary page

table code inside Summary page (inside Summary.js):

hint: focus on columns variable from './columns' and its implementation

hopefull someone can shed some light on this topic and here are some of my questions:

• How do big ecommerce websites manage their images for their websites?
• Is there any Best Practices should be consider when deciding where to keep websites images?
• I have heard to keep the images in multiple folder structure on the same server where the website is hosted so websites can render them easily and fast since they are all on same server - Is this the idea solution?
• How do professionals or big ecommerce handle images storage and maintain website images reliability and stability?
• Is Azure or AWS etc best place to store images for websites rendering?

Thanks in advance!