Visual Basic .NET is a .NET oriented-object implementation and evolution of Visual Basic developed by Microsoft.

learn more… | top users | synonyms

0
votes
0answers
39 views

Metrics for when to use a hash value?

I am working on a project that requires a series of flat files. I will be doing some data checking against simple date like: ID;StatusCode So a typical file might be like: 13993;R 38293;A 19349;I ...
-2
votes
0answers
23 views

Unable to cast COM object of type [closed]

Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.WorksheetClass' to interface type 'Microsoft.Office.Interop.Excel._Worksheet'. This operation failed because the QueryInterface call ...
0
votes
2answers
86 views

How to avoid using service location when using dependency injection? [closed]

I am trying to use dependency injection in a WPF application, and I really can't figure how to avoid using service location, which is considered to be an anti-pattern in many articles. I am using the ...
3
votes
2answers
73 views

Handling exceptions in a loop without breaking the loop (try to process all members)

Scenario: I have a loop that iterates over an Array of COM objects and does some work using them. My fear, working with COM objects, is that some exception will creep up (possibly on another ...
-1
votes
2answers
75 views

Should client side have a log? [closed]

The client side of my application is written in VB.Net, it accesses a java server. Server logs every request that was made by client, client shows every exception to the user (with an option to send ...
4
votes
2answers
48 views

Is it acceptable to define a “module” and “class” within a single .VB element?

Experiment: I have found it is possible to define both a "Module" (Namespace?) and a "Class" (Namespace?) within a single .Vb element (Module??). You can try this at home: Create a new Console ...
2
votes
1answer
37 views

Parsing XML to two separate (WInForm) controls

I've spent a great deal of time researching a solution to my issue with very little success. I'm rather new with .NET and vb.net so I apologize if this seems simple to anyone else. I had a first ...
4
votes
3answers
181 views

Saving to Registry vs. CustomFile [closed]

I've been using the usual My.Settings... method when it came to saving settings for my program but I was just wondering, If I wanted to save program settings into the Registry and load those settings, ...
1
vote
2answers
37 views

When to turn off Option Strict? Or how to deal with inheritance of COM using Option Strict?

I'm trying develop an add-in for an application using it's API and I have Option Strict turned on. Trying to work with these COM objects is causing multiple compile issues saying Option Strict ...
1
vote
2answers
239 views

DLL or web service for common functions?

We have a variety of basic functions (date utilities, email sending, internal math calculations, etc) that are currently in an old VB.NET project. We're going to move towards C# and I'm wondering if ...
0
votes
0answers
69 views

How to model dynamic table schema in .Net code

I am preparing to do an upgrade of a fairly large program that is currently written entirely in MS Access, both GUI and data (code and data in separate files). One of the key features of the product ...
0
votes
3answers
159 views

Understanding VB.NET variable scope

What's the difference between this code snippet: Sub Test() Dim i as Integer = 0 Dim q as String = "" While i<10 q=String.Format("Some text {0}", i) Console.WriteLn(q) i=i+1 ...
0
votes
1answer
115 views

proper exception handling (throwing/message) dll libary

I just wrote a dll library using vb.net. while testing, i got an error which i did not initially use a try-catch block. The code is Try 'The first four bytes are for the Command ...
3
votes
1answer
167 views

How to design similar purpose static methods

I know that you cannot override static functions, but for what I'm looking to do, it seems like the logical way to design my class. I have a method that is associated with my abstract class, that i ...
3
votes
3answers
245 views

Is it bad practice to register assemblies in the GAC?

I have moved a few assemblies to the Global Assembly Cache because they are used by multiple applications i.e. a VB.NET app and an ASP.NET app. I remember a few years ago when I started in my current ...
1
vote
1answer
297 views

.NET WCF: Persistent connection or Open/Close as needed?

I have a .NET WCF web service currently running in production right now. I would say 95% of the time it works flawlessly and as intended. However; there are times when I am throwing an exception that ...
2
votes
2answers
241 views

An algorithm that spreads similar items across a list

I need an algorithm that distributes same items across a list, so maximizing the distance between occurrences. E.g. I have a list of 15 items: {a,b,c,c,c,d,e,f,f,f,g,h,h,i,j} The algorithm should ...
3
votes
1answer
273 views

Trying to get a better understanding of Interfaces

Im working on a small program and I thought i would use it as a chance to get a better understanding of things I haven't really used before, mainly Interfaces and Inheritance from base classes. ...
-1
votes
1answer
126 views

Generate all possible outcomes from pattern or range

I have multiple patterns that I want to expand. Expansion should expand number and letter ranges between curly braces. Numbers need to support padding. I want to have it expand into a List(Of String) ...
1
vote
1answer
113 views

How can I share a managed DBConnection across various objects?

I am implementing what I thought was a simple object wrapper around a database where one object "PartRecord" represents one row of a database table. I want a client to be able to request a given ...
3
votes
1answer
345 views

Where to keep global variables in Windows Forms App

I have here a Vb.Net employee management application. It has employees, managers, teams, trainings and so on. The way the application is set up now, data is read from the database in the startup form ...
0
votes
1answer
2k views

VB.NET - Serial Key Generating (Encryption, Hashing, Encoding?) Algorithm

I am trying to create a basic licensing system where I take a unique ID from the client computer, and I get this Hexadecimal string (hyphens removed e.g. "84-18-CE-...."): ...
1
vote
1answer
189 views

What is the best approach to storing a multi-dimensional array with unknown bounds?

I'm trying to store content scraped from several lyric and chord websites into separate variables into either a multi-dimensional array, or into separate string arrays, but I've been stuck trying some ...
3
votes
1answer
325 views

Compiler warnings and errors [duplicate]

I come from a C# background before my existing role. I am developing a VB.NET app. The code I inherited had option strict set to off and all other directives set to 'None'. I have recently switched ...
0
votes
2answers
211 views

Why And is needed when there is AndAlso

I have referred What is the difference between And and AndAlso in VB.net? to understand the difference between And and AndAlso. I am from C# background - and C# has AndAlso only - no And.. And I ...
1
vote
1answer
124 views

OPTION STRICT set to off

I am working on an application with over one million lines of code. OPTION STRICT is set to off!. I want to set it to ON during the next work iteration. I believe the only reason OPTION STRICT ...
1
vote
1answer
255 views

What language is better for working with databases? [closed]

I am going to develop a software that works with different databases and I'm considering whether to use .NET languages or C++. I've known that .NET features LINQ and ADO.NET but are there features ...
2
votes
1answer
241 views

When to add new project to solution?

I'm tidying up my company's Version Control Guidelines. One of my tasks is to determine how solutions should be organized in a very broad sense. I have somewhat come to my own conclusion that one ...
1
vote
2answers
82 views

Agile retesting

I wrote some code about two years ago, which was deployed to the production environment. The code deletes information that is six years old from a system. When it was first deployed there were only ...
1
vote
1answer
904 views

Is VB.Net deprecated by Microsoft? [closed]

I have come to this web page from Sony: http://www.sonycreativesoftware.com/scripting_in_vegas_pro_and_sound_forge We suggest you use C# for your scripts, since although you can currently write ...
1
vote
2answers
358 views

Sending emails from server side

I need to read some of your opinions. I'm developing a desktop app (.net/winform) to keep data in one place. This is used by several clients and the data is stored in MS SQL Server (client-server ...
0
votes
1answer
468 views

Are VB.NET and C#.NET projects created from Microsoft Visual Studio “Open Source” safe? [closed]

I'm developing software in VB.NET and C#.NET and planning to release their source codes as fully open source. Are these projects "open-source" safe? My doubts are: VB.NET and C#.NET are using the ...
1
vote
3answers
401 views

Where to Populate Objects

As mentioned in this question, I am moving our team towards objects (as opposed to just throwing DataTables and variables around everywhere). I have picked a suitable spot for the project that ...
3
votes
1answer
451 views

Why doesn't VB.NET allow unnamed, one-line objects to be used?

Why isn't this allowed in VB.NET: New SqlCommand("some string", someSqlConnection).ExecuteNonQuery() Why would the language have been designed to require that this be used instead: Dim com As New ...
0
votes
0answers
325 views

Managing child worker thread list

After so much research, I thought I should ask the experts. I am working on a project for my corporate employer, we have android and iPhone mobile apps that make request to a web service, the request ...
3
votes
2answers
249 views

Improving the performance of a db import process

I have a program in Microsoft Access that processes text and also inserts data in MySQL database. This operation takes 30 mins or less to finished. I translated it into VB.NET and it takes 2 hours ...
1
vote
2answers
517 views

IL and case-sensitivity

Quoted from A Brief Introduction To IL code, CLR, CTS, CLS and JIT In .NET CLS stands for Common Language Specifications. It is a subset of CTS. CLS is a set of rules or guidelines which if ...
2
votes
3answers
459 views

Parallel.For Inconsistency results

I am using VB.net to write a parallel based code. I use Parallel.For to generate pairs of 500 objects or in combination C(500,2) such as the following code; but I found that it didn't always generate ...
1
vote
1answer
753 views

Should I just always Convert.ToInt32 my integers to account for potential nullable integers?

If my MSSQL database contains a data type that is NULL (i.e. null is allowed) then ORMs, such as EntityFramework in my case, create .NET objects that are nullable. This is great, and the way I use ...
-1
votes
1answer
687 views

Increase speed of a VB.net Application to SQL server 2008 and Hamachi VPN [closed]

Our current Information System (complete with path for pictures for records stored in db) has the following specifications: A desktop application was developed in vb.net We use SQL server 2008 r2 as ...
4
votes
2answers
437 views

Is CType() ever the preferred option?

Is there any time CType() is the proper option over other methods? I did plenty of thinking on this myself, but wanted to put the question in hopes there would be answer to my question so I can put ...
3
votes
5answers
2k views

Inner workings of the IF() function - why aren't expressions evaluated?

Short version How does the IF() function cause the passed expressions to NOT be evaluated prior to being passed in as parameters? Detailed version I am part of a standards committee, and a ...
1
vote
1answer
637 views

How can you denote the access modifiers “friend” and “protected friend” in UML?

The symbols for access modifiers that I know are relevant for many different languages: public:        + private:       - ...
4
votes
1answer
245 views

Reference Passing Style Anti Pattern

I'm working on a legacy VB.Net code base. There are very few functions that return values, most of the code is in subs/void methods. The general strategy seems to be to pass everything in by ...
0
votes
1answer
206 views

How should I implement “queueing” of approval on my objects?

I have a list of objects that will need to go through an approval process. I am curious if it would be best to simply add some properties to my object, like ApprovedBy, and ApprovedOn. Another ...
1
vote
1answer
107 views

Multiple visual studio projects/solutions on the go

I am working on a large asp.net app as a single developer. I will often work on a number of change requests concurrently. For example, a change required to the Finance component and a change ...
1
vote
3answers
1k views

Declare variable as interface

When should or shouldn't a variable be declared as a custom Interface type? When walking through some code, I required to know what was happening here: Public Class MyMainProject .... Public ...
2
votes
4answers
702 views

OOP concept: is it possible to update the class of an instantiated object?

I am trying to write a simple program that should allow a user to save and display sets of heterogeneous, but somehow related data. For clarity sake, I will use a representative example of vehicles. ...
3
votes
1answer
1k views

Mixing Fowlers Transaction Script and Domain Model

I am developing a large application where the previous developer used Martin Fowlers Transaction Script pattern. The requirements are becoming more complex and it is becoming a bit of a maintenance ...
0
votes
1answer
347 views

Is VB.NET a viable migration path for an application currently scripted in VBScript? [closed]

Our C++ MFC application gives the user the ability to define custom scripts in vbscript (via the VBScript engine). Since (parts of) the application are moving to .NET anyway, and since vbscript seems ...