Questions tagged [vb.net]
Visual Basic .NET (VB.NET) is an object-oriented computer programming language that can be viewed as an evolution of Microsoft's Visual Basic 6 (VB6) but implemented on the Microsoft .NET Framework.
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Increment sequence value for multiple styles
I've found several examples of code to increment various sequence values but they are usually specific to either alpha characters or numeric characters. I wanted something that could increment a ...
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Avoid Boolean as parameter for constructor | Complex Number Calculator
I have written a class in VB.NET that has the task of applying various arithmetic operations to two complex numbers. The class can also determine the magnitude and phase of a complex number. The ...
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Fill TextBox from ListBox on click
I have a form in a WinForms application that has a Textbox called txtSupplier, a button called btnSrchSuppliers, a label called <...
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Splitting array into smaller arrays with maximum "chunks" [closed]
I wonder if there is a nuget that can do this already
Anyway, here is my code
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Validate 10 digits on a few conditions
I want to write a function that validates the German tax identification number (Steuer-ID).
The identification number consists of eleven digits. The last digit is ...
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Convert different address formats to German one
I would like to find out which address format is input and convert it to the German format.
Examples:
5, Rue de l'exemple is luxembourgish.
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Serial port class wrapper for serial port object VB.NET
I've been reviewing some code that I maintain recently, and I came across this wrapper object for the serial port class. I'm trying to understand the advantage of this seemingly redundant object:
<...
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Parse floats to a custom numeric format string
I'm working to implement a custom string format. These are the float values to convert into a string:
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Reliably setting keys in Windows Registry for a VBA addin
We have a PowerPoint VBA addin which is installed using an MSI installer written with WIX (Windows Installer XML).
For the addin to be picked up (for all users) by PowerPoint, name-value pairs need to ...
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Creating a simple one-dimension Sobol sequence generator
A Sobol sequence, a series of low-discrepancy quasi-random numbers in range [0,1], can be generated by first initializing a vector of direction numbers:
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user252635
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Read an image file as greyscale byte array
I use the Emgu.CV wrapper to create a grayscale image. The data of this image are to be copied into a 2D byte array. Is there a more elegant solution than mine?
I'm asking here at CodeReview because ...
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Showing synced lyrics of mp3 music in vb.net
I wrote a program that syncs the lyric of an MP3 song and displays the text as a subtitle when playing the song, but my code for this is too Unprofessional and weak. Is there a way to display it more ...
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My 3D to 2D graphics algorithm is being a bit slow
With my VB.Net Windows Forms application, I would like to rotate and project a 3D object. The program works so far, which is why I'm reporting here and not Stack Overflow, but it's slow.
I've already ...
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Rotation Management Application
My code works just fine but it seems like I have too many variables which could confuse people from what the code does. Any ideas? Or does this look fine. Feel free to add any other tips to make my ...
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String formatting
My requirement is to format the input values to a particular format as "##.###/##.###"
Example - My input value can have alphabets, alphanumeric, numeric
Expired -- > if alphabet, output ...
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Reading from a text file into a structure and posting to list boxes
I am trying to stay ahead of my Year 12 Software class. Starting to work with records and arrays. I have answered the question, but the solution feels very clunky. I am hoping someone has suggestions/...
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Organizing and accessing data in xml database - VB.Net
So I made an XML database for my music player where I store songs data (title,artist,album,genre,year) the code for generating the database is working but slow as heck, the code works as following ...
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I want to clean up this console app calculator (VB.net)
Getting started in VB.net I've written this console calculator based heavily off Nicholas Dingle youtube channel (in case it looks familiar). What I want to do is have a separate sub called ...
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VB.net SQL match against Excel data to datagridview
I am importing an Excel sheet where the first column will contain product numbers. I match those numbers to my SQL database and display the product number and description of the matching products to a ...
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Returning employee balances
Here is the code for balance retrieval from EMPLOYEES record. Please simplify and improve it accordingly. It is working fine and I have no problem with it but I believe that's not the correct way to ...
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String Concatenation and Comparison
I have the below code. I have list of status which contain may contain 4 values. R,UR,DO,NDO
based on this list. i need to convert to Y,N values
If list contains R the Readstatus="Y"
If list ...
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Calculate draws faster in VB.Net [closed]
I created this calculation algorithm, unfortunately, it works a little hard for more combinations. How should it be improved for faster operation?
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Creating SQL Server Database Users Dynamically from User Input
The Application
I have an application in testing that runs off of an MS SQL Server database. The app allows users to authenticate using Windows authentication (that is, using the Windows username the ...
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Password validation class using database values
I have a password validation class that takes values from our database and depending on their values, checks if the password is valid. If it is not, I built an error message containing everything that ...
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Retrieving Registry nodes for HKLM
I am using the below code to retrieve nodes and values. It is taking 20 mins to retrieve the nodes and values of HKLM.
I'm expecting to reduce the retrieving time
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Retrieving HKLM nodes of Windows10 Registry
I have used below code, code is working fine, also retrieved the data, but there are performance issues. Retrieving the HKLM registry nodes is taking around 6 mins time. Please suggest any solution.
<...
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Cookie value to enum
Users can have a Cookie called lang that contains either the value "default=1" (English) or "default=2" (French). This cookie is used to determine their preferred ...
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Is this an acceptable MVVM Model with IEditableObject implementation?
I'm trying to follow MVVM pattern in a VB.net WPF application, and I would like to implement IEditableObject.
Is this code acceptable for an MVVM application? In ...
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Inizialize an Jarray wih n JObject that contain an progressive index
I need to inizialize an JArray with a JObject that contain a property areaNum that is an incremental integer.
Right now I wrote the below code, which works ok if I have a small number of JObjects, ...
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Inherited class calls initialization code in base class [closed]
I am interested in hearing your opinion on the approach I have taken to have inherited classes initialize their base class.
Here's a Machines collection class from that maintains a list of Machine ...
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Validate (Possible) File/Directory Path
I am working on a "comprehensive" library for use in my internal applications and I have created a working method (as far as all of my testing has shown thus far) to ensure that a file/directory path ...
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Cascading interfaces for wrapping VSTO Microsoft.Office.Interop
I have created my own wrapping framework for the COM interfaces exposed via Microsoft.Office.Interop.
MIRRORING WRAPPERS
The first purpose is to be able to unit ...
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Assigned a System resource to an image based on variable
I have a mapping application and the marker I'm using is based on the field rep assigned to that visit. My code is just a Select Case based on the rep's name and then it sets the bitmap for that ...
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Use a delegate to assess equality
I have built my own generic class to implement IEqualityComparer(Of T), which takes a delegate as an input for the constructor. This delegate takes two objects of ...
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Console app to get XML from API and save to database
I am making a small console app to get XML from an API and then save the data to a database. While this project was not created via test-driven-development, I have tried to make it such that tests can ...
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ROT13 encoder/decoder
This is a simple utility, intended to sit on the desktop for when needed, that does the simple ROT13 encoding and decoding.
I am used to coding in VBA, and I am interested in more .Net idiomatic ...
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Convert integer to full text string duration
I have a function I have written in VB for use in SSRS 2012. It takes an integer and converts it to full text duration - for example 900 becomes "15 minutes", 9000 becomes "2 hours 30 minutes", and ...
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Encrypts using AES GCM for data with limited visibility and long rest
This is the third iteration of my venture on creating an encryption/decryption solution. I asked a question here, which led to this question here, which led to this answer here, which led me to ...
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Encrypts using AES with random initialization vector meant for data with limited visibility and then long rest
I've done some research, reviewed countless SO questions that appeared similar, leading me to endless rabbit holes.
My solution is working, but I don't like it. I want to create a random IV for AES ...
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Optimization - open excel file from VB.NET using interop
I have a simple app, which is something like a launcher for my macro enabled excel workbook. I made it for easier distribution, to be able to check if excel installed and also to make it look and ...
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Interactive auction board
An exam requires me to create a program for an interactive board for an auction:
An auction company has an interactive auction board at their sale rooms, which allows buyers to place bids at any ...
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Efficiently centralise and manage Groups of Features (aka "lines of services")
I mostly develop AddIns for Office. In the example of MS Word, I have an AddIn which allows to review drafting style, another AddIn which allows to monitor cross-references, another Addin which allows ...
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Verify OpenSSL RSA signature (PHP) with .NET (VB)
I would like to achieve something I believe is pretty standard:
A) My VB.NET client (ideally targetting Framework 4.0) sends a text string to my Apache/PHP Server via an HTTPS POST request.
B) My ...
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Iterating over combinations
Background
The following describes the real world problem that my code is intended to solve. It is may help you understand what the code is doing and why. I don't think this is strictly necessary in ...
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Function to return the closest Date to Today (inclusive) from Ordered list
The way I've written this feels clunky. Particularly, it feels like I shouldn't need to have both a 'dateToCheck' and 'selectedDate' variables.
The objective is to find the Date in a list that is the ...
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Detect file type using file signatures
My program has to detect the real file type of a given file using signatures. For now I'm just checking JPG, but I want to add more.
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Outlook VSTO: Fastening email loop on a large pst file
In a Outlook VSTO Addin I needed to loop through a large pst file (e.g 30GB containing 50k+ mails). Following code block loop the pst file folder by folder recursively. It takes huge time (1hour+) to ...
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One class for MySQL and MSSQL Queries
EDIT BELOW
I am trying to create resusable classes for MSSQL and MySQL queries (later also Update and Delete queries). I tried it doing the OOP-way. Here is my result:
Einstellungen.vb:
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Comparing two instances of a class
I have a Calculation class. It is persisted in the DB and users can modify it.
The aim of the CompareWith function is to ...
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Tone Mapping image manipulation
This code is extremely slow and ideally I would appreciate someone walking me through getting this going on the GPU, but if nobody has time for that which is understandable, any and all optimisations ...
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