So the premise of an assignment I'm working now is that I will read lines from a txt file, eventually have a user select a combo box for a city, and then have the current timezone and time in that city.
For reference, each line in the file contains three tab-delimited sections which I need to access for varying purposes. An example of the format is:[code...]
What I have so far (below) is the file being read, splitting each section of the line into a multidimensional array, and then combining the "columns" into an array structure (I'm not too hot on using an array as a structure, so I may be doing something wrong).
[code...]
Now assuming everything there is alright (I have a feeling something may be wrong in regards to the structure) I need to fill out the combobox with only the Location, and have that change the current time and timezone (located on the GUI as labels).
Where I've been stumped at for the past few days is how to proceed from here. I've been trying to populate the combo box, but all my attempts have failed and I'm starting to think it may be because of the method I'm using to do all this.
It's a simple 3-Tier Structure Windows Form Application using Visual Basics 2008 express edition. I need to populate a ComboBox (User Interface Layer) using an Array with only 3 names (Data Access Layer and Business Logic Layer). I think I'm close to it but I'm unable to pass the data from the DAL all the way to the UI properly. When I run the application, My ComboBox gives me choices but the three choices are
I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login Dim Header() As COMMANDHEADER Dim UserName() As PSTRING
I'm trying to sort an array based on a structure but whenever I do this, it basically erases all the data in the entire array.I have verified that the array is populated correctly, it is when using array.sort that everything returns blank.
I need to get data from one text file and use it for a calculation in another text file.The first file has the students' current grade and the second file has the students' overall GPA,.I need to get that current grade(named 'qp') out of the first streamreader so I can use it for my calculation but it only gives me the 'qp' of the last student in the first streamreader.[code]
I Changed the following: Dim UserFile As New System.IO.StreamReader(sPath & "" & UsernameBox.Text & ".txt")Dim aString As String = UserFile.ReadToEnd() (The code above says that 'UserFile' and 'aString' are Unused variables)
Public Class frmMain Private strSpark() As String = {"PR214","PR223","PR224","PR246","PR247","PR248","PR324", "PR326","PR444"} Private strBrands As String(,) = { { } } End Class
I have a problem with a streamreader in visual basic 2008.I am updating a database from text files on an ftp server. The streamreader works fine until the file is more than 100,000 bytes long.It reads until it reaches this point and then just ends. No error message, it just reads to this point which happens to be 2 fields out of 6 in the database stream. My question is - does the streamreader have a limit? And if so what is a workaround?
Dim connString As String = "Data Source=" & pDataBase conn = New SqlCeConnection(connString) Dim strQuery As String = ""[code]......
I'm writing a program that basically loads an entire text file into a streamreader variable, then reads this variable line by line and parses and writes a line into a new text file. I'm VERY new and my knowledge is mostly self-taught, but I can't seem to get out of this one. It works for smaller files, but it appears to reach a limit in characters at some point because in a file of 900 lines, it stops writing about halfway through 800 and there are no errors, the program actually completes and the message box pops up.
There are a few things with this code I already know I should fix, such as creating the new text file name, it's messy, I just don't know how.
Private Sub btnProcess_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnProcess.Click Dim IndexValues As String()
After gathering the Machine names on the (sealed) LAn i am then getting the ip addresses, MAc address and Macine User name of each machine on the LAn..These details will need to be accessed seperately for use in the security testing and i am unsure how best to store the active data (though eventually in a database) Am i best to create a Multidimensinal arrayList or array(bearing in mind that all the data is convereted to "String" (arrays can only store one data type??) The data found on the live network is allways changing making an array a difficult choice? I have read some tutorials mentioning making a structure with the data and storing this in an arraylist but i dont know whether this will make accessing the individual data items (ip,MAc,HostName etc) a difficult procedure?
I'm currently stuck on an issue regarding declaring an array of type short in a structure and having it default to 'nothing' rather than '0' after ReDim.'Declaring array and setting it's initial size
Private Structure Totals_T Dim sTot_Desc As String <VBFixedArray(10)> Dim iTot_Cnt() As Short Public Sub Initialize() ReDim iTot_Cnt(10) End Sub
[Code]...
When calling m_Totals(0) the arrays returned have 10 records in the arry with sTot_Desc and iTot_Cnt having values of nothing in all records. When I ReDim m_Totals both the variables I declared in the structure(sTot_Desc and iTot_Cnt) are declared as nothing, it's fine for the String but I need the Short I declared to be declared as '0', which is what I thought happens when you ReDim. Can anyone see what's going on here and why it's declaring my variables as 'nothing' rather than defaulting to '0' for the short and ""/nothing for the string?
I am once again struggling with my weekly project. I am assigned to write a program that converts a predetermined english sentence to both french and german. The code is to contain an Array and a structure. Also we have not covered retrieving array data from a TXT file, so we are to hard code in the array data. I coded the structure and the array, I added the array data, but am confused how to access the data. The examples I have found all deal with retrieving data from a TXT file. Can someone give me a nudge in the right direction.[code]....
The more I read my book the more confused I get, as the programming example is not even close to what this assignment is I am to modify my existing project to keep track of an order in an array.
I'm very new to VB.NET and I suppose this is a little big for a first project.I've done the same thing in other languages so I figured it wouldn't give me much trouble.I'm working on a map editor program for a 2D platformer game.The map will be an array of a structure which contains the width, height, and tile elements of each layer. the tile elements are stored in a 2D array within the structure.[code]That didn't give an exception but I'm not sure that it actually redimmed considering the second assignment command still crashed.
I am writing a class and room scheduling program, and would like to use an arraylist that will contain structures. The structure has a couple of arrays in it for when the class meets, and I am having difficulties figuring out the correct syntax to declare the array in the structure. Additionally, in the syntax to access the array. For instance, say I want the MeetingDays to be T, F, T, F, F, F, F; the Meeting Times to be "8:00AM", "", "8:00AM". "", "", "", "", ""; and the Duration to be 75, 0, 75, 0, 0, 0, 0
Public ClassList As ArrayList = New ArrayList Public Structure MyStructure Private _ClassName As String
I'm having a bit of trouble trying to iterate or search through my array (or structure).I am reading in some values from a file, and populating my array.Then, I need to search to compare to one of the values in my array.[code]any pointers? should I use something else instead of arrays / structures ?
I am trying to be able to add to an established Array that is read in from a CSV file. I'm using structures and I get the concept, but I just can't seem to get it to store. I am using Visual Basic 2010. Sorry for posting in here, but I did not see a category for it.
I wish to write a structure made up of fixed length strings to a file using y.Computer.FileSystem.WriteAllBytes or the like.I am using a VB6 project with fixed length strings that I have converted in to VB.Net.
Structure Record <VBFixedString(22),System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray,SizeConst:=22)> Public tim() As Char
I am trying to declare a array within a structure, and it is not working. [code] So I want each league to have a single name and id and 20 players.Is there a way other than writing out dim player1, player2 etc.
Can anyone tell me how I would declare an array for data that will come from textboxes? Every example I find seems to be data that comes from an input box, and the array name would just be strInputbox, for example. However, in my case the user will input data into several textboxes (each named txtBox1, txtBox2, txtBox3, etc.) and I'm not sure how to write this.
This is my structure... <Serializable()> _ Public Class AcctRecords Public Amount() As Long Public DateC() As String [Code] .....
This is where I try to create a new instance but I get an error that states: Overload Resolution Failed Because No Accessible "NEW" accepts this number of ArgumentsPrivate Sub FixMasterArraySize(ByVal Cnt As Integer) ReDim Preserve Acct.Master(Cnt) For I As Integer = 0 To Acct.Master.Length - 1 Acct.Master(I).AcctType = New String Next End Sub
If Acct.Master(I).AcctType was a Boolean type there would be no error..
