which compiler errors would be detected out by VB compiler?
I have searched out some compiler errors list for C#, for example, see the website at [URL]
MS provided us the information about C# compiler error. Does MS provide VB compiler errors information as well.VS
1) is vb6 is interpreter based languge or compiler based or both interpreter and compiler based language?
2) is VB.Net interpreter based languge or compiler based or both interpreter and compiler based language?
3) if any of above mentioned is both interpreter and compiler based so tell me please when it compiles and when it interprets?
Imports System.CodeDom.Compiler
Public Class iCompiler
Public Shared Sub GenerateExecutable(ByVal Output As String, ByVal Source As String, ByVal Icon As String)[code].....
I have the following code:
Dim compiler As ICodeCompiler = New Microsoft.JScript.JScriptCodeProvider().CreateCompiler
Dim params As New CompilerParameters
params.GenerateInMemory = True
[code].....
I am trying to implement a simple IEqulityComparer to use with LINQ collections. I have written the following code which is reduced to its simplest form for discussion purposes...
Public Structure bob
Dim SiteID As Integer
Dim fred As String
End Structure
[code]....
The problem that I have is that both functions throw the compiler warning "function 'getHashCode' (or 'Equals') shadows an overridable method in the base class 'Object'. To override the base class method, this method must be declared 'Overrides'."
However, if I declare them as Overrides, I get the error "function 'GetHashCode' cannot be declared Overrides because it does not override a function in the base class."!!I am also getting a compiler error on the "Implements" line to the effect that I must implement "getHashCode" but I presume that is a result of the first problem.
When I try to compile my project, I get this error
Error 1 Unable to copy file "objDebugoneForce.pdb" to "binDebugoneForce.pdb". Access to the path 'objDebugoneForce.pdb' is denied. oneForce.
How to rectify it? [URL]
This error first appear to occur randomly. Steps to recreate:Open Visual Studio and load a solution (some files automatically opened) - this is when the problem occurs Close all open files Restart visual studio and load solution (no issues)Open Exactly the same files again, restart visual studio and load solution so files open automatically (problem occurs!)
However, when trying to narrow it down to a single file (that is automatically opened when the solution is loaded), I couldn't reproduce the problem. Now with all the files open again the problem doesn't occur!!! So it looks like it is fixed - though this happened before and eventually the issue came back.
I think it is to do with one of the user controls with DevExpress controls on it - when the error occurs, the designer displays the error. Though I can't reproduce it at the moment to confirm that.
If I look at the IL that is created in Linqpad for the two following code snippets, I wonder what happens here.
In c#
int i = 42;
results in the following IL code
IL_0000: ret
whereas in VB
Dim i As Integer = 42
it is
IL_0000: ldc.i4.s 2A
IL_0002: stloc.0
Apparently, the c# compiler understands the the value is never used and thus simply returns nothing. In VB.NET the actual code is translated.Is that due to differences in compiler optimization or is there anything else at work?
Update: Just to clarify this - I just enter this one line into LinqPad and look at the IL it creates (most definitely by running the respective compiler). There is no program.
how to create my own programming language,I can create a compiler for a language like vb.net itself. Essentially, the user inputs code, they get a .exe. By NO MEANS do I want to write my own language, as it seems other compiler related questions on here have asked. I also do not want to use the vb.net compiler itself, nor do I wish to duplicate the IDE.
The exact purpose of what I wish to do is rather hard to explain, but all I need is a nudge in the right direction for writing a compiler (from scratch if possible) which can simply take input and create a .exe. I have opened .exe files as plain text before (my own programs) to see if I could derive some meaning from what I assumed would be human readable text, yet I was obviously sorely disappointed to see the random ascii, though it is understandable why this is all I found.
I know that a .exe file is simply lines of code, being parsed by the computer it is on, but my question here really boils down to this: What code makes up a .exe? How could I go about making one in a plain text editor if I wanted to? (No, I do not want to do that, but if I understand the process my goals will be much easier to achieve.) What makes an executable file an executable file? Where does the logic of the code fit in?
This is intended to be a programming question as opposed to a computer question, which is why I did not post it on SuperUser. I know plenty of information about the System.IO namespace, so I know how to create a file and write to it, I simply do not know what exactly I would be placing inside this file to get it to work as an executable file.
I am underway to develop a VB.Net compiler using visual studio 2005, but so far I am not aware on how to go about, regarding to what are the key requirements or skills required for developing a compiler.
View 3 RepliesHow can i make my own compiler ?
View 5 RepliesI have a program using vs 2008 (as 3.5) and code in vb. The site has been running nicely for 3 years, but suddenly the error message has come: BC 30451 Name 'class 2' is not defined. Call Class2.open_connection(cn, Session("datapath")) But in my local computer and in the site server the particular line mentions class1 only and not class 2!
View 5 RepliesI am running visual studio 2008 with SP1 installed. I have a solution which has 7 projects. One of the vb files (which has some 15000 lines) is freezing the visual studio and when i close the studio it shows the visual basic compilation error. I have tested the solution in other workstations and it is running fine. I tried repairing visual studio and i tried reparing 3.5 sp1.
View 1 RepliesI downloaded Microsoft Visual Basic 2010 Express and I can produce programs using it, but I'm interested in using another editor.I searched the web for the compiler and apparentely it's called "vbc.exe", but I don't seem to find it in my machine.I'm supicious that it only comes with the non-Express version.
View 5 RepliesThe compiler gives me 3 errors:Errors building F:#DprojectsucctLOCUST 2 Server GenucctLOCUST 2 Server Geni
nDebugServer.vb into C:UsersPat'sDesktopserver.exe
vbc : (0,0) : error BC30420: 'Sub Main' was not found in 'Form1'.
F:#DprojectsucctLOCUST 2 Server GenucctLOCUST 2 Server GeninDebugServer
.vb(97,0) : error BC30456: 'Count' is not a member of 'System.Array'.
F:#DprojectsucctLOCUST 2 Server GenucctLOCUST 2 Server GeninDebugServer
[Code]...
Consider this
bar = 1
foo = <1 or 2, depending on previous code>
if foo=1
while bar <= 5
[code].....
What I want to know is, is the compiler smart enough to optimize away the (apparently) repeated tests for "foo = 1" since foo is not modified in the body of the loop?If so, I might use the second construct since it is semantically equivalent (I think!), takes less code and reduces indentation levels.
Trying to intergrate the closure compiler service into one of my applications and having some issues.Error being returned is "(413) Request Entity Too Large." Sounds reasonable but I know for a fact the service accepts files larger then the one I am sending it.
Private _HttpWebRequest As HttpWebRequest
Private _Result As StringBuilder
Private Const ClosureWebServiceURL As String = "http://closure-compiler.appspot.com/compile?output_format=xml&output_info=compiled_code"
[code]....
I'm using a LINQ query to translate data inside a DataTable object to be a simple IEnumerable of a custom POCO object.
My LINQ query is:
Dim dtMessages As DataTable
'...dtMessages is instantiated ByRef in a helper data access routine... '
Dim qry = From dr As DataRow In dtMessages.Rows
[code]....
However, the compiler is throwing a warning message under dr As DataRow with the message: Option Strict On disallows implicit conversions from 'Object' to 'System.Data.DataRow'.Why am I getting this error and what do I need to do to fix it? I would have thought that dtMessages.Rows returned a collection of type DataRow. Is this not correct?
I've found a difference in overload resolution between the C# and the VB-compiler. I'm not sure if it's an error or by design:
[Code]...
I though that I know this one... This simple For loop:
[code]...
I teach programming in Visual Basic 2010 Express Edition and I have one blind student in my class and it is essentiall for him to turn off every functional underline in text editor of Visual Basic enviroment.I know how to turn off intellisense. I know how to turn off green underline (warning), but I don't know how to turn off blue wavy underline (compiler error) in Visual Basic text editor.I found plenty of advices on web forums, but everything is about that should be possibility same like in C# (I use as well) -
View 9 RepliesI need some of my initialization code to be blocked off if I am in Design Mode. This code is ran in the new method of the form, so it runs before the DesignTime Property can be set. Is there, or is there a way to setup, a compiler constant which indicates whether or not you are in Design Time. The Debug Constant doesn't work because when I run the application in Debug mode I want it to run
View 14 RepliesI want ask whether there is online VB.NET editor and compiler. Word completion and intellisense features will be great.
View 3 RepliesThe below program throws a runtime error (invalid conversion from double) because there is [code]It compiles fine, but when the program is run, it throws a runtime error.Is this a compiler bug? Shouldn't it stop me with a compiler error, like invalid syntax ?
View 2 RepliesTo be more precise, Would it be nice if we could compile vb to native code instead of having the intermeditary layer of the CLR. A bit like PowerBasic.
View 17 Repliesi wont to code in vb.net do that compiler makeing exe for Example make form2.vb to form2.exe or like that
View 2 RepliesI have an aspx page that my colleague designed for me to stick on the back end. I made a few alterations to the page, adding various controls and things - and now the compiler doesn't recognize any of the controls on the page! The Intellisense is working just fine - I can type txtName. and as I push the . all the properties of a TextBox pop up as normal.ut when I try compile, the compiler says "Name 'txtName' is not declared".
View 3 RepliesI've boxed in red. The class displayed here does implement INotifyPropertyChanged, but the VB compiler seems to think that the PropertyChanged event as declared does not match the signature of INotifyPropertyChanged.PropertyChanged.Here I've selected the offending line of code. Between this and the next screenshot I literally just cut and paste the exact same line back into the file (i.e., I hit Ctrl + X followed by Ctrl + V).I have this happen sometimes, particularly with the INotifyPropertyChanged interface in my experience but I have no idea if the problem is limited to that single interface (which would seem bizarre) or not.Let's say I have some code set up like this. There's an interface with a single event. A class implements that interface. It includes the event. [code] Every now and then, when I build my project, the compiler will suddenly start acting like the above code is broken. It will report that the Person class does not implement INotifyPropertyChanged because it doesn't have a PropertyChanged event; or it will say the PropertyChanged event can't implement INotifyPropertyChanged.PropertyChanged because their signatures don't match.This is weird enough as it is, but here's the weirdest part: if I just cut out the line starting with Event PropertyChanged and then paste it back in, the error goes away. The project builds.
View 2 RepliesIs it possible to use a constant defined by the compiler in code like below?[code]...
I'm running batch processes and I'm experiencing problems with one of my customer's data. I want to add special code for only that customer, but I want to keep the code there so I can easily switch the customer ID in the future should i need to debug a different customer.[code]...
Isn't the a quick way to add event handlers to a program through the compiler? I'm trying to make a label change color when it's moused over.
View 5 Replies