I am trying to finish up a project and can not figure out what I am doing wrong. Very frustrated with this. I am getting an error "InvalidCastException was unhandled" and I am not getting my calculation. I have changed the program and worked on this for several days and decided to ask for some help. Below is my code.
Form code
[Code]...
i need to create somthing that lets someone enter a work and it will show it in pig latin form this is what i need.
1. If the word begins with a vowel then add -way to the end of the word like if they put "ant" it will show "ant-way"
2. if it doesnt start with a vowel then add a dash to the end and move the letters from the front to behind the dash untill it hits a vowel then put "ay" at the end so "Chair" is "air-Chay"
3. if it doesnt contain a vowel then ass "-way" to then end so "56" is "56-way"
this is what i just started...
Private Sub btnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStart.Click
Dim oldpass As String = txtEnglish.Text
Dim coded As String = txtEnglish.Text
Dim NumChars As Integer
[code]....
I have 16 buttons assigned a number on the form, the buttons should go from "" to "4" and back to "" again as clicked. If a button in a row, column, or region is the same it should evaluate as a bad move and provide the user with a message box indicating so. I have this working in a different program but I am now attempting to write efficient code. I must have left something out; I get an error when I click on any button stating my value must be less than infinity in my first for next loop. [Code]
View 4 RepliesHaving a runtime error: I have a simple program, programmed using 2008 version of Visual Basic that uses DirectX 9 runtime; the problem is that when I run the program it says: InvalidCallException was unhandled, the problem code is: device = New Direct3D.Device(adapterNumber, DeviceType.Hardware, ref_form, flags, params).
View 8 RepliesI have come across this problem several times and do not know what is causing it. It's imported and everything. It just doesn't seem to pick it up. My next best bet is something to do with the 'protection level' how do I go about changing it's protection level. I have searched in P2_Gameover properties for it, but do not know what I'm looking for, specifically. Whenever I get this error, I usually just re-import through a picturebox (that's the only way it seems to work) But please, what am I doing wrong?
Picture displaying this error:
I am making a little game for my friend in Visual Basic 2008. It uses 3 files (gamedataidname.txt, gamedataidlevel.txt, gamedataidgold.txt).
When the play button is clicked, I wrote some code to check if the file exists and display the content of the 3 files. This part works fine. But then I have a 'Else' statement to create the files.[code]...
As part of a review of my program on Softpedia, the Reviewer stated the following: If you call on a piece of software and it is not installed on your computer the application will pop up a nasty error message that may discourage beginners. Popping a dialog saying the reason of the error or that the software is not installed on the system would be a great fix.
View 5 RepliesI tried installing my app in another computer and found out that a lot of error messages keep popping up. What can i do to bypass these error messages? something about jit debugger or sumthing. Can i compile the app in such a way that these errors wont pop up?
View 19 RepliesI think that my previous post wasn't what I should have been asking. I think my issue has to do with Convert.ToString in my code I have this 3 times, I have no errors while writing the code, only when I debug it I get the error message "input string was not in correct format"
Private Sub DisplayBill()
lblSlicesTotal.Text = Convert.ToString(numofSlice * Slicefee)
lblFriesTotal.Text = Convert.ToString(numo
[code].....
The code below is the entire class that has the error in it... the errored code is highlighted in red. The error is,'ReDim' cannot change the number of dimensions of an array.
Code:
Public Class clsMap
Dim SR As System.IO.StreamReader
Public Width As Integer
Public Height As Integer
[code]....
I have recently taken a liking to programming, and have programmed a few games in C#,my friend has asked me to program an application for him to use in his shop. But I have no idea of what language is best suitable?
View 8 RepliesImports SpeechLib
Public Class Form1
Public vox = CreateObject("sapi.spvoice")[code]....
I am getting an error Name 'SVEPhoneme' is not declared.How and where do I declare it ?
I avidly create games in VB.net. Being a hobby programmer I give my games away for free. Since I'm a hobbiest without formal training I do try and educate myself on proper programming principles and follow them when programming such as OOP. There are however some things I have obviously missed being self-taught that perhaps I would know if I were formally educated. Once such issue that has really been my bane is how different classes (from now on referred to as objects) 'know' about each other WITHOUT programming specific interaction.
Okay imagine this, you have a space game and the following objects
[CODE]...............
Now each one of these objects has a Health, X,Y and Z private members and properties that are all inherited from clsSpaceEntity for argument sake. Now one way of programming collision between them would be to code out the following logic in the main game loop
[CODE].........................
Now this might seam okay if your talking about the simple example above but some of my games have tens or even HUNDREDS of objects that interact in this basic way. Is there a way in OOP to do the following... for each thing that inherits from clsSpaceEntity check against every other object that inherits this type (except itself) and if they collide then reduce health next? This sort of ability for a type of objects/class or whatever to be 'aware' of another and how they are the same/different and interact would save me tonnes and tonnes and TONNES of coding.
In short words I am looking for a .NET translation of JFugue.Update I realize that there is no real .NET alternative for JFugue,Note: I want to emphsize that my search is on the transcription part, not the playing part, in other words, I am looking for a .NET engine that has MIDI-mapping classes etc.
View 5 Repliesim using tasks parallel library in .net 4.0 i want to have the ability to specify a task for each core independant of the other cores. usually in TPL, i create a task and i tell it to run in parallel, i have no control over the number of threads created nor can i control the number of cores to participate in the parallel task. also, i cant specify each particular core a different task.i'd like to know how to achieve this in TPL if it is possible.
View 3 Repliesn a program i'm using i want to be able to create a box (done that) but pressing a button, but now i need to attach a sub onto it so i can interact with it, how would i do this?
View 6 RepliesSo far I have worked with C Programming and C++ Programming. I am fairly new to DOT NET environment and my current project requires VB.Net skills. I need to know
1)Which books to refer for starting with VB.Net language?
2)How to Start with VB.Net Programming?
3)Are there any forums/articles for quick head start.
I want to use VB for linear programming. Can any one tell me the best approach or give sample codes.
View 2 RepliesI have done my application programming in VB. But now i am trying to do some application related to network programming. But i am unable to find the winsock control in Visual Studio 2010.
View 5 RepliesI have been reading up on the parallel programming and even now still a little confused on the whole concepts. Lets say I have a single project with about 5 classes that interact and have local variables in methods and variables accessible to all methods in a single class and even 1 or 2 variables accessible to all classes accessed through instantiation. Now using threads I know that global variables would be overridden by multiple threads if there were no locking applied but local variables to a method/function do not, right?
So if I ran the project multiple times meaning as a new process, the methods and variables would be thread safe right and no data corruption occurs? So to implement parallel programming using the task factory, if I created a project that basically creates tasks and each task is basically running an instance of another project, then shouldn't the variables and data be thread safe and safe from corruption? But what if I had the output files and they named by Output & datetime.now.tostring, would there be conflict issues and I ask this knowing that I have seen this happen when trying it. [Code]
i was wondering how do you know if your programming in vb.net or vb 6.0 idk the difference.
View 12 RepliesI have a general question about the programming language vb.net. I wonder how I should see the vb.net language compared to a "lower generation " language like for example C+.For example if you had to develop a CRM application , can you build such an application in both programming languages with the same amount of detail and efficiency?
Is it right if I say that the "language" vb.net is an abstract version of for a example a lower language like C+ in a way that the same possibilities are possible as with C+ but more efficient so it takes the programmer less time? So basically if you would compare it with building a house in C+ you would need to build a door with all the separate pieces while in vb.net you would just place a door as a whole. But this does not mean the possibilities of building a house as a whole are fewer.
So now comes my final question: can vb.net be seen as a true programming language like C and can somebody who masters vb.net be seen as an equally good programmer as somebody who masters C+. Or would the C+ programmer in this case be superior?
I'm new to VB programming usually im a PHP programmer, i am advancing fairy fast on the structure, theres one thing i have been stumped on[URL]..What im trying to do is when i put the detaisl in the fields, i press save and then am prompted to save with my own extension
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I want to know what is the programming process of Visual Basic 6.0 i.e how does the program compile, like in vb.net it is converted to MSIL, how does the programming process go in VB 6.0
View 3 RepliesI am a new visual basic learner and I already have some difficulties in finding the proper softwares to start my first programs. I will have to develop in vb6.0 and 8.0 (.net 2005) and 9.0 (.net 2008), what softwares do i have to use? From my search, I will have to use Visual Basic 6.0, Enterprise Edition (or another edition) for 6.0 programming, right? And for 2005/2008 vb.net programming, could I use visual studio 2010 for both languages or is that better to use visual studio 2005 and 2008? Well i guess i might be a bit lost in all those different terms.
View 6 RepliesWhy use VB over other programming languages?
View 2 RepliesWhile working on a project I have come across a way of not having to check if a string isnull or empty
dim sb as new stringbuilder
dim bob as string
sb.append((bob & string.empty).padLeft(10, " "))
Here, bob is not instantiated but doesn't throw a null reference error. In situations like this, is it more readable to do the above code or the below code?
if string.isnullorempty(bob) then
sb.append(string.empty.padleft(10, " ")
else
sb.append(bob.padleft(10," "))
endif
I personally think method #1 is more readable and maintainable.
Dim obj As CommandButton
' I would like to do smth like this, the name of the button is in a variable
a = "Commandbutton1"
Set obj = a
obj.BackColor = vbBlack
I have a class with a mthod which does a a time consuming task. I know how to start the method in a separate thread using the Threading.Thread class. What I want to do is use callback so as to have the method report its result to another method when completed. I chose to use the asynchronous Begin/End call pattern.
Private Function BeginConnect(ByVal URl As String, ByVal callback As AsyncCallback, ByVal state As Object) As IAsyncResult
'Some Code
End Function
[code]....
i'm creating an Asynchronous socket programming in vb.net. i've utilised the code from Asynchronous client and server code frtom the following links:m a new user so could post only one link fully)When I try to connect the for more than one client the second client always waits until the first clientcompletes the call. i want the clients to accept calls at the same time
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