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.
0
votes
1answer
50 views
Inheritance doesn't seem right
Please take a look at the code below:
Public Class ClassA
Protected TestVariable1 As String
Protected Sub DoSomethigImportant()
End Sub
End Class
Public Class ClassB
Inherits ...
1
vote
0answers
18 views
VB.NET | SQL Code Cleanup
I don't know how else to form this question. I am trying to teach myself a new language in three weeks. Can you please give me some advice on how to clean my code and make it faster or more reliable? ...
2
votes
1answer
47 views
Screen resolution
I am working with an application that will have sub forms. The primary form opens above the system tray, and on mouse-over, secondary windows will open right next to the primary. When I use the ...
0
votes
0answers
25 views
Generating permutation of string
I have written a code that generates all possible permutation with repetition of a string, I want to make shorter and much faster kind of this program but I don't know how to
Btw, This is my code of ...
2
votes
2answers
63 views
Objects and instance variables in loops
Is there anything wrong with doing this:
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
For value As Integer = 0 To 1000000
...
3
votes
1answer
163 views
asp.net (vb.net): handling of open database connection and calling shared function from web api
I'm working on an ASP.NET project using VB.NET that uses Dapper
and the code as implemented so far runs fine with just me testing.
In the example below, Dapper calls a stored proc.
But my I am ...
1
vote
1answer
74 views
How do I shorten my code?
I currently have a huge code for regenerating some things in a game a made. The code is very big and I think it can be compressed but I don't know how to do it. This is the code
Private Sub regen()
...
1
vote
2answers
60 views
.NET - multiple DLLs and one namespace
Please have a look at the code below:
ClassLibrary1 has a structure as follows:
Namespace com.app.test
Public Class Class1
End Class
End Namespace
ClassLibrary2 has a structure as follows:
...
1
vote
1answer
55 views
Not = or <> preferable in VB.NET
In VB, I believe the following are equivalent:
If Not x = y Then
...
End If
and
If x <> y Then
...
End If
Am I wrong? Is there some scenario in which they are not equivalent? If so, what ...
3
votes
1answer
36 views
I was wondering if there was a better way to improve my XNA joystick code? (Vb. Net)
I'm on a high school robotics team and I'm trying to code a Xbox 360 controller so that it'll controller the motors with variable speed. So far it works alright, but where I'm quite the novice coder ...
2
votes
1answer
61 views
VB.Net interfacing with F# Euclidean Distance Algorithm
I testing F# code which calculates "nearness" of two N-dimensional points using a least square euclidean distance algorithm. The class library is written in F# and the calling will be from VB.NET. ...
1
vote
1answer
52 views
Creating a new item or updating an existing item
Something about my code just doesn't seem right. It feels cumbersome and not very logical.
Could someone put me out of my misery and let me know that I wrote this bit ok?
It's pretty simple, when ...
0
votes
0answers
27 views
Is this the correct way to expose a setting for a vb.net class library?
I define in the Settings Tab of a VB.Net class library some user scoped settings. I want to expose these settings to other projects that reference the class library. I chose to do this using a public ...
0
votes
1answer
111 views
Using Statement for OleDB - Is this overkill?
I am still trying to wrap my head around good programming practice and just wrote this routine to read in an Excel file and return all the sheets into a dataset:
Public Shared Function ...
3
votes
2answers
156 views
Improving UI response times by threading, a better way?
Since I've started to use a computer, I hated everytime an application's UI stops responding for a while. However, there are some applications I see, that are doing their "heavy" jobs, yet the UI ...
1
vote
2answers
58 views
Mode of list of numbers - VB
I have an array of numbers created by the user, the array is sorted and I can find the Average, Median, Max, Min, Lowest -> Highest, Highest -> Lowest. Now I just need to find the mode. Here is the ...
1
vote
1answer
121 views
A faster implementation of AcceptChanges?
So I started wondering why it takes 3.5 seconds to AcceptChanges for one changed record in a large DataTable. I wrote another implementation of AcceptChanges (VB.NET) - Me is a DataTable here:
Public ...
1
vote
1answer
64 views
Inherit SortedDictionary - Is this good programming practice?
Also posted on Stack Overflow
As an example, suppose I had a large amount of data about a set of Restaurants for a large set of Dates in a database that I need to analyze / output to the user.
So, ...
1
vote
0answers
205 views
Automate scanning from multiple scanners on the same computer using WIA and VB
I originally posted this question on stack overflow but someone suggested that I post it here so Here I am :)
I'm the ultimate beginner in programming. I have some experience in php and vba, doing my ...
1
vote
1answer
86 views
Is My Data Access Leaking Connections?
Folks
I have an N-Tiered ASP.Net Web Forms application which uses Enterprise Library 5.0 for data persistence. Recently I have noticed my application has been spitting out the following error
...
2
votes
1answer
45 views
Synchronous MMF Test
(This was originally posted at StackOverflow on 10/14 but I've copied it here per suggestion by @mikalai)
I'm seeking some second opinions regarding the validity of my test.
In a nutshell, I'm using ...
6
votes
2answers
179 views
How to optimize this excel automation
The createReport method takes around 30 seconds to execute and I was wondering how I could optimize it. I'm using the Interop.Excel class and the workbook I'm importing to is very formula intensive.
...
4
votes
1answer
135 views
OOP: Need tips of my approach in .Net
I am looking for some different approaches to this following OOP scenario.
Dim pb As Object = Nothing
If radCars.Checked = True Then
Dim productBase As ProductsBase(Of CarColumns)
...
2
votes
2answers
821 views
Writing a Data Access Layer
I am new to programming and have written this Data Access Layer. I am using this DAL in my projects. Now, I have a feeling that it is pathetic (when I wrote it, I was kind of happy). Do you guys also ...
4
votes
2answers
203 views
I have an encrypted file, how to remove a specific string from that file
I got a file with lots of ASCII characters. No extension, and has the Type Of file attribute 190000 File.
I have many characters like L¿ö in the file however I required to remove lines from a word ...
2
votes
1answer
409 views
Method for populating ListViewSubItems
This is my current method for populating the sub-items of ListView controls. I like this method for two reasons...
1) I don't have to keep up with the display order of the columns.
2) If I enable ...
3
votes
0answers
191 views
Building an ASP.NET Menu Recursively - Needs Refactoring and Readability Improving
The following code builds an ASP.NET menu recursively from data in a database:
Imports Microsoft.VisualBasic
Public Class MenuBarHelper
Public Shared Function GetMainMenu() As Menu
Dim ...
3
votes
1answer
322 views
speeding up an algorithm that find patterns in a growing collection
I want to find a way to speed up this code.
if you look at the condition of If calculated Then in the code below, this is what slowing down the code.
While the code provided seem fast with Const ...
0
votes
1answer
170 views
VB.NET program stops operating without any errors thrown [closed]
I have key logger that I wrote myself and is a somewhat large piece of VB code that after say 20 minutes stops working. I've tried using Try Catch statements, but no errors are thrown. I can't seem to ...
1
vote
0answers
330 views
Datagrid not refreshing correctly with Async Ping VB .Net
I have an application coded in VB.NET that has a bunch of servers in a DataGridView and does a continuous asynchronous ping. If all the servers are up it refreshes great, but if one goes down and ...
4
votes
3answers
114 views
Rewrite 2 repeating With-blocks
Got the following piece of code:
If boolFlag Then
With offer.Person1
entity.Birthdate = .BirthDate
entity.FirstName = .FirstGivenName
...
1
vote
1answer
1k views
attempt to calculate age in vb.net
I am working on an app where I have to calculate the age of a person. Inside of my age class I have a function that is designed to account for leap year. Is there anything I am missing or could ...
0
votes
1answer
698 views
vb.net code to load XML and csv files to datatables at startup
Here is some code that I put together for an app I am working on that loads 2 xml files and a large csv file to a dataset at startup. It runs fairly fast, but I would like a second opinion on what I ...
1
vote
2answers
146 views
Inheriting needed when only difference is performed in the constructor?
I have a class that produces a key based on the two objects passed. The key for the items passed is simply the string of the ID (a GUID) for each object. There is also a subclass that makes sure any ...
0
votes
1answer
348 views
vb.net general insert function
I am new to vb.net and one of the functions I wrote is below.
The idea behind it is to just send a dictionary and table name to the function and get the result i din return.
Is this good practice or ...
0
votes
1answer
259 views
Is there a prettier or more performant way to create an MVC Pager Helper?
I've got this MVC Pager Helper and it's working exactly as expected. I'm wondering if there's a prettier or more performant way to build this out?
Also, I know that the StringBuilder might not be the ...
6
votes
0answers
318 views
Another way to implement weak event handlers in vb.net
Summary: Please let me know, what weaknesses do you see in the described workaround for event handlers preventing garbage collection of registered listener objects...
I'm in the development of and ...
3
votes
3answers
829 views
Checking datasets for tables and rows
Is there a cleaner way of checking a dataset for tables/rows before attempting to read them?
If ds.Tables.Count > 0 Then
If ds.Tables(0).Rows.Count > 0 Then
'do something with the ...
2
votes
2answers
335 views
beginner's class inheritance question C# VB Visual Studio 2010
I understand the typical example of fruit as a base class and banana, orange, and pear as derived classes.
But what about when there is only one property in common?
Do you still use class ...
2
votes
1answer
565 views
ASP.NET account login system implemented via Masterpage and Panels
I have been tasked with implementing a secure account login system for a website's content management system. I have built a solution around an access masterpage that handles all account access ...
1
vote
3answers
1k views
Switching to another Form from the Project Startup Form and Back Again
My two areas of question are related and are slightly generic in that they beg for best practice information for my two code examples.
Topic 1: Switching to Another Form from the Project Startup ...
1
vote
4answers
720 views
Calling stored procedure with `sqlCommand`
I have the following code as part of an sqlcommand which is calling a stored procedure:
Dim groupObj
If groupId = 0 Then
groupObj = DBNull.Value
Else
groupObj = groupId
End If
Dim siteObj
...
4
votes
1answer
217 views
My program spikes from 100000K mem to 1000000K mem in a matter of minutes in my program in VB.net
I've created a program that uses System.Graphics to render a simple (small) 2D scene to the screen. The problem is, for some reason, it starts to quickly accumulate memory. In fact, it goes from ...
1
vote
0answers
141 views
Using Delegates and BeginInvoke with .NET 2.0 WebServices
I'm attempting to implement a simple long-polling/comet/reverse AJAX solution, and came across the concept of delegates, specifically with the BeginInvoke and EndInvoke methods. I've built a Web ...
2
votes
2answers
333 views
Should I label ByRef parameters in .net functions?
A handy pattern that I like to use:
TryGetBlah(ByRef blah as BlahType) as Boolean
It kills two birds with one stone.
Test that blah exists
Gets blah
What I don't like is that when ...
1
vote
1answer
126 views
Is this a good way to optionally run some code on a background thread?
I'm attempting to keep this as DRY as possible; is this a good method to optionally run some code on a background thread depending on a configuration setting? This will primarily be called from an ...
1
vote
3answers
494 views
Case statement in multiple methods
My page contains: GridView1, GridView2, Button1, Button2, DropDownList1 I bind Gridviews to the table selected in dropdown like this:
Dim results as DataTable
Select Case ddl1.SelectedValue
Case ...
5
votes
1answer
407 views
Threadpool, multithreaded task, is this good
I have developed a test app that works by getting webpages source and processing it. I have up to 100k URLs in queue and want to use a maximum of 25 threads, please help me check if the code is good ...
2
votes
1answer
225 views
multiple threaded program vb.net
i have this code that is suppose to work with at starting the minimum number of threads, say 5. when it starts the first five threads, it automatically replaces any thread that is finished making ...
3
votes
0answers
185 views
C in CRUD for silverlight, is this the simplest? easiest? method without any side effects?
The C in CRUD silverlight
Create new silverlight business application “CRUD”
Add ADO.NET Entity Data Model to CRUD.web
Select the db, the tables, build the project
Add Domain Service Class to ...
