Differences About Importing Namespace In C# And VB?
Sep 16, 2011
In VB, when we adding a new references - in my case web references -, it simply type namespace followed by the class name to make a new object.For example:
Dim obj As NamespaceName.ClassName = New NamespaceName.ClassName
Then I apply this concept in C#. So my code will be:
NamespaceName.ClassName obj = new NamespaceName.ClassName
...and it doesn't work.Actually, is there any difference about Importing Namespace between those two?And also can you give me a little explanation about Project-Wide Default Namespace Imports in VB?
UPDATE:My point is why "In C#, When I've typed NamespaceName, the ClassName was not listed in the Intellisense?".However, it did well in VB, do I have to import something?Maybe, there is something to do with the term "Project-Wide Default Namespace Imports". (CMIIW)
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Apr 13, 2010
I have a VB Web Site project that has recently (and mysteriously) stopped importing the "System" namespace by default.
I'm having to either place an Imports System line at the top of each code behind, or preface everything with System, which is fairly annoying, not to mention redundant. I can't for the life of me figure out how to get the System namespace back to being imported by default.
I've already checked to see that WINDOWSMicrosoft.NETFrameworkv2.0.50727CONFIGweb.config contains the <add namespace="System"/> line--it does. That was my best lead.
I have references to several namespaces within the System namespace in the <assemblies> node (e.g. System.Design, System.Web.Extensions of my website's web.config. There is no <namespaces> node. This has not been changed recently.
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Mar 3, 2011
Where is directoryentry, directorysearcher, searchscope, etc.?
.NET 4.0, VS2010 Professional
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Mar 17, 2011
I need to read an xml document from a database record into an XDocument object in order for it to be deserialized. So that the deserialization will work, I need to apply a specific namespace to each of the level 1 elements. So XML looks a bit like this:
[Code]...
How do I prevent the blank/empty namespace being added to each child element of the element to which the required namespace has been applied?
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Jan 29, 2012
Imports System.Windows.Forms
ERROR : 'Namespace' can occur only at file or namespace level
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Apr 10, 2010
The type or namespace name 'Messaging' does not exist in the namespace 'System' (are you missing an assembly reference?)
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Nov 16, 2011
This class is located in the namespace Acme.Infrastructure.Interface.A class with the same name EventArgs exists in the System namespace.In another project in my solution I have a class Acme.BusinessModules.MyModule.MyClass.When attempting to use the EventArgs class I have to fully qualify the class name or the compiler thinks I am using the System.EventArgs class.My understanding of namespace resolution was that the compiler would first look for the class in the current namespace, and then its parents. It seems that the compiler checks in System before it checks in sibling namespaces. Is it correct that System is checked before the sibling? Or is this behaviour caused by other issues (Imports order?)?
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Dec 8, 2011
I am getting this error,here is my code.
Public Class Sample2
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles Button1.Click
[Code]....
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Aug 22, 2010
What are the differences between 32 and 64-bit .NET (4) applications?Often 32-bit applications have problems running on 64-bit machines and conversely. I know I can declare an integer as int32 and int64 (certainly int64 on 32-bit systems make problems). Are there other differences between programming an 32 OR 64-bit or a both 32 AND 64-bit compatible application?
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Aug 10, 2010
Would like to build an application and was wondering why someone would choose one language over another.Also is one language used more for a particular type of programming then another (For example, is VB used more for business or Windows development then for web development ?)
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Aug 14, 2009
I am currently learning visual basic 5 on my home computer. I was wondering if someone could tell me what the major differences are between Visual basic 5 and the latest/new editions of VB.
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Jan 14, 2010
We have legacy character codes that we want to store as numbers in a new system. To increase readibility and general understanding in the code for devs making the migration, I want to do Enums like this..
[Code]...
With this setup, the code will be readable (imagine If Record.Status = Status.Open), and yet the values will be stored in the database as small numbers so it will be efficient. However... I am a VB.NET guy, but everybody wants to code in C#, so I need this sort of structure in C#.After Googling, I discovered the the general .NET equivalent of AscW is Convert.ToInt32("C"). When I try to use that statement in an enum, I get the compiler error "Constant Expression Required".
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Dec 13, 2011
in order for me to get help on me and my programming partners vb6 rpg, I have to upgrade the project to the vb.net platform, and I am worried that the IDE interface that is used to program the vb side of the rpg is different, so I am wanting to ask any of you if there are any significant changes to the IDE or if it is relatively the same as it was in vb6... I am also hoping that someone here can also help me to see what is wrong with my load/save function... I now thought of something to try to see if that is the issue or not, but the code is still vb6 code, the only difference will be that the program will be upgraded to the .net platform, so if that changes anything in the code, then I am not aware of this as of yet, because I am still downloading the visual studios 2010 express iso right now... so I do not know for sure yet what will be changed.
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Dec 18, 2011
Does anyone know how to implement in VB an algorithm for final differences that changes the network (the matrix) during the computation (decrease its dimensions)?
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Aug 26, 2011
Today I was playing around with Entity Framework and I've read that the generated IL for C# was different than VB.NET for the following code:
[code]...
As it seems the VB.NET version of this code will contact the database every time the code is executed while the C# version will retrieve the entities from the cache when the code is executed multiple times.Why would they make both languages behave in such a different manner?It was my misconception that both languages just differed in syntax and had almost exactly the same generated IL.Are there any more examples where both languages generated such different IL?
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Jan 17, 2011
what can C# do that VB.Net can't ? VB.net vs C#.net
main differences between visual basic and C# as well as the pros and cons between the two?
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Jul 18, 2011
Well i want to compare 2 strings (version one and version two) and get the differences in a format that i can convert to html on my own, like you can view how a post was edited here on stack*overflow* or like svn tracks differences between revisions....
It must be full managed code library.
Like this JavaScript but i need to do it on the server-side..
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Mar 9, 2012
I've heard that the c# garbage collector can be 'more aggressive' than it's vb.net counterpart. Is this true? Are there any other differences in how garbage collection is run in vb.net vs. c#?
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Oct 26, 2011
i'm using Enumerable.Except to check if a DataTable in memory is in sync with the table in database.
The background is: this DataTable and other frequently used tables are stored in the Cache of a WebApplication. But meanwhile i'm convinced that this is not a good approach because it's a source for nasty errors that are difficult to reproduce/debug.
Therefore i've created a function that checks if database and memory are in sync, otherwise an error-log will be created. This works perfectly. If there is a row in memory that is not in database, this row will be shown below "Difference in database", the same applies in reverse. But if rows exist in both datasources(the PK idRMA) and some values differ, the log will contain this row in two versions(below "Difference in database" and "Difference in database"). It is not easy to see the differences on the first sight.
Q: Is it possible to select only the properties that caused Except to think that first sequence is not in second?
This is the the complete function(the first lines are relevant):
Public Shared Sub CheckRmaMemoryInSyncWithDB()
Dim inSyncText As String
Dim color As Drawing.Color
[Code]......
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Jan 13, 2010
I am using asp.net and the .net framework 2.0. I may be able to upgrade the servers to 3.5 if the solution is compelling enough. Here is the problem. I have two pieces of xml. I'll refer to piece number 1 as the template and piece number 2 as the actual. Here's a basic example:
[Code]...
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Nov 16, 2011
I just found an interesting problem between translating some data:
VB.NET: CByte(4) << 8 Returns 4
But C#: (byte)4 << 8 Returns 1024
[code].....
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Sep 24, 2009
I have 2 text boxes and I load a text file in to each box, the files contents are "almost" exactly the same but not 100%. how would i compare the 2 against eachother and output the difference in percentage? I've made a program once before it was pretty cool it did all these things and it was in VB.Net i just cant remember how i did it.. i do know i counted how many of the sames words exist but i cant remember what else i did.
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Feb 17, 2011
Compare differences between lists?I have two sets of lists below[code]...
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Oct 10, 2011
What are the differences between a HashSet(of T) and a list(of T). I recently discovered HashSet and it seems to be substantially faster and uses much less memory than a list, so why use a list at all ?
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Jun 9, 2010
differences between HttpWebRequest and WebClient and why I should use either.
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Jun 22, 2010
what differences between vb2008 and vb2010.(OOP)
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Jun 29, 2011
After I have programmed several projects in VB.Net I to my surprise discovered that there are some more than subtle differences between C# and VB.NET LINQ usage.For example, if we want to group elements by multiple properties (columns) we need to create a new anonymous type explicitly:
var procs = from c in Process.GetProcesses()
group c by new {c.BasePriority, c.Id} into d
select d;
whereas in VB.NET more straightforward syntax will already do:
Dim b = From c In Process.GetProcesses()
Group c By c.BasePriority, c.Id Into Group
Select Group
So, one does not need to create a type with "new" here. What are the other differences? good comparison between the LINQ syntax in C# and VB.NET?
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Nov 18, 2010
NET gurus... How would you convert this very chunk into VB?
[Code]...
When I use an online converter (Telerik), the middle line converts like this: Me.timer.Elapsed += New System.Timers.ElapsedEventHandler(ManageThreads) with 2 errors:
1- "Public eventElapsed is an event and cannot be called directly. Use raiseEvent
2- Delegate requires an Adess Of expression. Do I simply add "Address Of" ?
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Nov 17, 2010
know where I can get a list of the differences between VB.Net versions? For example, in which version were generics first introduced, and when did the "Using" keyword come into being?
I've tried googling it and all I seem to get are the differences between VB6 and VB.Net, which isn't what I'm after.
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Oct 6, 2009
I am doing a project. I save a date in the registry. Now, I have to test this date against today's date and calculate the differences in minutes, hours, days, months, weeks and years.I save the date in the registry like this:
Code:
Application.UserAppDataRegistry.SetValue("Date", [Date])
I then made a sub to calculate the differences:
[code].....
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