These are the instructions. Create a Visual Basic program that reads in baseball player information from a form and holds all of the player information for an entire baseball team (20 players). A baseball player consists of a first name, last name, number, position, and batting average. The form should contain 3 buttons Add Player, Display Players, and Exit.
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I would just like the program to end itself. Application.Exit just keeps rolling me back in a loop.EDITED to Include Code::
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For the time being I have been using a Structure to store "people" (their name, gender, age, etc...), because I really love to refer to something like Mike.name or Caroline.age, so I could simply put Caroline.age += 1 anywhere in the code and here you go, Caroline is one year older. No more simpler.But because of how inflexible (compared to Classes) Structures appear to be, when I needed to iterate through all the instances I was forced to use a list or dictionary so I could use a FOR EACH ... NEXT block. That was resolved by you people in the previous post, but I'm having the problem that I couldn't use the elements of the list to change the original instance of the Structure proper... I mean, if I code something like this...
For Each thisperson As Person In peoplelist
If thisperson.name = person_selected Then
'person_selected is the SelectedItem.ToString of a listbox[code]....
Well, I thought that thisperson.teamleader and Mike.teamleader were going to be equivalent (when the IF statement was true, that is) but that doesn't appear to be the case. So right now I'm really hating Structures...But when I look into Classes... well, they have more flexibility, yes. You could construct a FOR EACH block without any other trick like the "on-top" list, and that it's very useful indeed, but (a big "but" IMHO) I lose that NICE feature that makes possible to write the name of one of them instances like Mike.age or Caroline. kills
I mean, if I wanted to add a year to Mike, well... there is no "Mike" in the first place. A "Mike" string could be a property for the class, but I cannot (or know) magically refer to him with the ease of a Structure, so when I want something so simple as Mike.age +=1 ...well, with a Class I'm simply clueless to how locate him and change ANOTHER property of him.I suppose I am doing something very wrong, because I cannot believe VBasic could force on you those two extreme philosophies...:
Classes = +flexibility -usability ???
Structures = -flexibility +usability ???
What I want to do is SO simple that I cannot believe I need to choose between the two.
I have built a webservice to take order information..
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My clients use the code above to enter multiple orders without any issues, but I need to be able to add multiple Products to each of the orders. I cannot figure out how to add the contents of the Product Structure into a GenericList, within the OrderList.
I have a structure called 'Scheme' and in my program I want (ideally) an ArrayList of 'Schemes' (so i can add, remove schemes etc.). However, within the 'Scheme' structure, I want to have an ArrayList of 'Item''Item' is another structure. Are there any solutions out there for iterating through these arrays quite easily?
How can I easily add multiple Items to a Scheme and mutliple Schemes to my Scheme array. Code is below. When I try to add Items to a Scheme, I get the 'Object not set to a reference of an object, try the 'New' keyword', but you cannot declare 'New' keywork within a structure.
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I have a public structure in the same form I'm working with, like this...:
Public Structure Person
Public name As String
Public age As Integer
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At the start of the code I've declared some 'Person' instances...:
Public TeamMember1 As Person
Public TeamMember2 As Person
Public TeamMember3 As Person
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I don't know what to put at ??????. If we were talking about control objects I would write Me.Controls("TeamMember" & n) and that would work. But with a public structure I don't know how to refer to it.
Is it even possible? And if not, how would you do what I'm trying to accomplish?
I only want to run that 'If' statement with every team member which I have, and right now the only way I know to do it is to create 10 (!) of those 'If", and only change the team member number at the end. And that's horrible...
I save data entered by user into a structure like this
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Q1. How can i save that structure into file using binary read write methods.
Ans. [URL]
Q2. How can i save that structure array into file using binary read write methods.
Ans. link to some other tutorial or resource if u know
I read in the Book "Mastering Microsoft Visual Basic 2008" about "User-Defined data types".The example given is creating a Structure as follows.I wanted to check that so I wrote all the code given; I used a TextBox and a Button for this.(I didn't include the "CheckDate" here; that is in the book)
Structure CheckRecord
Dim CheckNumber As Integer
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The problem is this does work.What I get is "00000". and I found out that the "Checks(4)" Array does hold any value ie: on keeping the cursor over that, it shows "CheckAmount 0.0, CheckNumber 0 , CheckPaidTo Nothing ".
I'm attempting to create a list of structures that contains a list of structures. I can't seem to figure out how to properly allocate the object for the inner list of structures. I expect the outer list of structures to have a couple thousand entries and the inner list of structures to be fairly small at 2 to 10. Both lists will grow over time but the number of elements within the inner list will be constant for an instance of the outer list. Meaning, if an instance of the outer list has 2000 entries each of those will have the same number of elements on the inner list, say 4 entries.
Here is a simplified code fragment. This fragment makes no attempt to create the instance of the inner list "StructBlist" since I can't figure out where to put it. Tried "New List(Of StructB)" in the declaration as well as "Alist(0).StructBlist = New List(Of StructB)" but neither works.
Public Class Form1
Structure StructA
Dim FieldA1 As Integer
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I doubt anyone has specific experience related to this particular task, but maybe you can spot my problem. I'm trying to make a call to lithium (forum software) to place a vote in their poll, and their docs show this:[code]I'm not able to successfully register a vote and they say it's because the poll.choice param is not appearing in the header, but if I step through debugging, I see it in the Header Keys/Items just fine.
View 1 RepliesI'm completely stomped with the payroll program I have created. The NetPay variable is stuck on 0 and I went through step mode to try and fix it. No luck so far. Additionally I'm trying to turn the whole numbers, that the users input into the form, into percentages(such as 10 into .10, 25 into .25 ect..). Tried 1/x and (x * 10^-2) [code]
View 3 Repliesso i have a class called FOOTBALL,then another 3 classes/forms that inherit FOOTBALL, they control score (SCOREBOX), possession (POSSBOX), and quarter (QUARTERBOX).the FOOTBALL class has 4 variables, "score" (array of 2 ints), "teams" (array of 2 strings), "possession" (boolean), and "quarter" (int)after that i have another form called MAINBOX, which creates new instances of the 3 classes (SCOREBOX, POSSBOX, and QUARTERBOX) (like this: private scoring = new SCOREBOX)... however they all technically create their own FOOTBALL classes, so I cannot connect them.
View 4 RepliesI'm writing this program in Visual Basic .NET to organize different fields of data, and I'm using profile slots through application settings to store the data for users. But, I ran into a stack overflow error in my SlotSelect.vb class. My best plausible guess for why this happens is that I'm using the wrong kind of variable container in the below sauce code, but my dilemma is that I don't know what specifically is going wrong.The code that the vshost is saying is the cause for the overflow was written from some code that I looked up on MSDN and other places for referring to objects in other classes, and I tried using other variants of it to see if it was any different. So far, nothing has worked, and it doesn't stop the error while compiling, much less in the code markup--it only catches it when it starts the application in debug after it finishes building
View 7 Repliesi am using Visual Studio 2008 and VB.NET 2008 and SQL Server 2005 as the database. I just finished designing & writing codes for a customer's contract information and , however after it has been connected to the database only one of the datetimepicker can be click, (i put 2 datetimepickers to find date interval) and the rest of the function including in the form are not working! it seems that the form stuck and NOT responding. i cant even close the form using the X button, so i have to stop the process using compiler (visual studio 2008), however if i press the 'Delete' button before the 'Add' button, it will successfully delete the data..
View 4 RepliesI've got one for you. I am working on a program that calculates the cost of a trip given a specific price of a Workshop say "Handling Stress for $595" the length of the workshop say "3 Days" and the city the workshop is in say "Austin for $95/day" now the issue i am having is that for example my NumDays variable (the variable for the number of days of the workshop) is not taking the value. Ive ran a Watch on the variable and it stays at 0. It also displays zero. i have assigned it an integer so it should be working if I assume correctly.
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The problem is that the code is in a loop which i'm not sure how to stop.The need the text file to read all the file extensions.So i start looping through all the files in a folder.The other problem that happens is that i also need to loop through all the files in the folder so that i can compare the string line and the string X. So the final result is that my program is in one giant loop.
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Im new to programming and I started by grabbing some code here and there from various internet sites. I made some little programs without sense but Im stuck on my new program.
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I've used an OleDbAdapter to connect to a MS Access database with about 17 fields. I want to be able to search between 1 and all 17 fields for return(s). I have been able to search 3 fields so far (so all 17 will not be a problem), but all 3 fields must be completed or an error occurs (FileNotFoundException was unhandled).[code]...
View 9 RepliesPrivate Sub btnSendMsg_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSendMsg.Click
Dim con As New OleDb.OleDbConnection
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My client program gets stuck on NetworkStream.Read even though the server is reporting it's sending the message. The client and server are running on the same computer.Full server code (console application)
Imports System.Net.Sockets
Imports System.Text
Module Module1
Sub Main()
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i'm a little stuck with a personal project, i'm interfacing a MiniBee usb output card to my pc and having a few code problems, i am trying to control outputs 1 to 8 which requires a decimal number that relates to the binary pattern of the ouputs if that makes sense i.e
1 = output 1 on
2 = output 2 on
3= output 1 and 2 on
etc etc
So, i figured the easiest way to individually control outputs was to use public boolean vars Out1 to Out8 so i can use those anywhere in the code and use a form timer to trigger the updating of the output
So the bit im stuck on is i've done a test using 8 checkboxes to set Out 1-8 as true/false
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For the last week I've been trying to create an async method. I tried the MSDN article How to: Implement a Component That Supports the Event-based Asynchronous Pattern but it does the work in a method in the same class. The work I'm doing is a lot more complicated and is its own class. The problem I'm having is the class doing the work cannot post the progress or completion as the methods that handle this stuff is in the parent class.
View 2 RepliesThe wait cursor cannot be changed for a numericupdown for which i have a _valuechanged private sub.
how to set it to the normal cursor?
I'm bubble sorting an array called number which starts at (1) and ends with (6), the code I'm currently using is this:[code]
View 2 RepliesHere is the code I used. everything works fine, but i need a little different code to upload image.
Private Sub btnAttach_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnAttach.Click
Dim iLength As Integer = CType(File1.PostedFile.InputStream.Length, Integer)
If iLength = 0 Then Exit Sub 'not a valid file
Dim sContentType As String = File1.PostedFile.ContentType
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I am not using with cmdinsertattachment. I am using Html - Input(File) from the HTML toolbox. the ID of the input file is ID="upldimg". So how do I insert this into my table which is -
Column1 ID identity
Column2 Img image
Column 3 Description varchar(200).
The insert statement like -
INSERT into table1 (Img, Description) values (???, txtdescription.text)
Do I do upldimg.text in the insert statement?
The following code works fine, however if the user wants to cancel out from the openfiledialog they cant they are stuck in a loop. A loop I created in case they selected the wrong type of data file they could choose again. [Code]. I really need some help seeing where and how to let the user cancel out without the program continuing. I tried some dialog.dispose code but everywhere i seem to put it it generates an error somewhere.
View 4 Repliesim making a Music Player in VS 2008 and everything is basicly working perfectly as i want, however i seem to be stuck at the "Pause/resume button"
so my question is, in the Windows Media player COM Components, is there a code for Resuming the current state on the Mp3 file and id assume it would be resume,[code..]
[code] this is my code n i want to store data at runtime in the my database.i used data base as an access07 and my platform is vb.net..Now come to the point when i run the project it terminates when i'm inserting my data in the access file.[code]
View 4 RepliesI have a Webbrowser in my application, it loads the same page after it has finished loading every few seconds really. After a while it will either freeze halfway through loading (show only top half of page) or just not reload at all and stay on loaded page.
I originally tryed the .refresh method but didn't work good, then I tryed just the simple .navigate to the same page, works better but still same problem.
If I manually refresh it with F5 it will work as normal again for a period of time.
Also if I run it outside of the IDE it can crash and give me "flash.ocx not found, it's not included with this version of windows" or something, very strange.
Main prob is webbrowser gets stuck / wont refresh even tho the code is in the DocumentCompleted event.
I'm trying to Debug and code an program in VB.net 2005 in windows XP. When I start my service and attach it for debugging it hangs at the line:System. ServiceProcess.ServiceBase. Run(ServicesToRun)The service says it is started under windows service dialog, but does not go further in the code, it just sits there..Does anyone have any solutions to this problem? I had this problem before but it usually start after a few moments,it seemed to get progresively worst, were now it doesn't progress at all, and just stays hung. [code]
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