I have a .txt file i want to read that has states by abbreviation and states by name. In that text file some are territories and some are states.
I want to read from that file and put the abbreviations into one structure array and the states into another structure array.
I then want to lookup up the states by abbreviation or state name. The lookup will simply be selected by a radio button which will flag either the states full name array, or the abbreviation array.
all I have is the structures created:
Public Class Form1
Structure Lookup
Dim Abbreviation As String
[Code]....
How can I read from the .txt file and store into an array
I'm trying to build something called a structure which will store data it retrieves from a text file. I have the structure set up like this: Structure Employee Dim FirstName As String Dim LastName As String Dim ID As String Dim Hours As Integer Dim Wage As Decimal Dim EarnedPay As Decimal End Structure [Code] ..... How to set these operations up?
im tryin to store data in an array using a structure. However, the code im using keeps returning a null referece exception, even when there is something in the input boxes. This is the code im using:
With SaveInfo(Index) .EmployeeID = EmployeeIDComboBox.Text .EmployeeName = EmployeeNameBox.Text
I want to reading in a excel file and extract the sCodenumber sDescription ans the sStatus and store them in a array : StatusComposeArray(5200) As MyCompose. After this I need this array for comparing outside this class. But as can you see the array is defined inside the sub: ReadingIn_ExcelFilesCompose [Code]
currently working through a project using VB 2008 windows form application and having a little trouble with the code. I need to read data from a text file into an array of a structure, displayed in a list box and have a number of searches conducted on the data and these results displayed on the form. The test data is of rainfall across a number of areas and is in the format:
i need to save an array of intptrs as a part of a structure in a file, vb.net gives me "File I/O of a structure with field 'pList' of type 'IntPtr' is not valid." error, ok i figured and tried to convert them to integers and while it worked for other singular intptrs it did not for the array as it just throws me a conversion error. I then tried rebuilding the array in the new sub of the save structure and while that sorta worked(i think) it then gives a "bad size" error when saving. Im out of ideas, saving the array elements one by one would be suicide as the amount varies and is well in hundreds,
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
Define a structure named product, The structure should contain 2 variables one as a string and the other as a decimal. The decimal is used to store the price and the string is used to store the item number.
Declare a module level array that contains 5 product structure variables
Code the main forms load event procedure so that it reads the item number and prices from the itemInfo.txt file The procedure should store the item numbers and prices in the module level array. It also should add the item numbers to the list box.
When the user selects an item in the list box the items price should appear in the xPriceLabel. code the appropriate procedure.
The code I have is as follows
' Project name: Glovers Project ' Project purpose: The project displays the price of an item. ' Created/revised: <your name> on <current date>
[Code].....
Seems the problem I am having is this line is returning a value less than 0.
I have a list of files and all of them have a different size. I need to upload them in chunks of 250Kb (or less if it's a small file or if it's the last chunk of a file).What I would like to do is read a bunch of chunks (lets say 15 chunks), in a separate thread, and then store the chunks of data in some sort of list. This list must be available to other threads.
An upload thread (I don't need help with uploading itself) takes the first chunk from the list and marks the chunk as "currently being uploaded". When the chunk has been fully uploaded, then the chunk is removed from the list. A second upload thread takes the next available chunk in the list that has not been set to "currently being uploaded", etc. There are a total of 10 upload threads working at the same time.
As soon as a chunk is removed from the list, then a new chunk of data is read and added to the list.Does anybody know what kind of list I need or how I should do something like this? I don't expect people to write out the code for me, but I have no idea where to start with this.
I have developed a vb.net dll (.net 3.5) which does the following : - I have data of several stock market companies. - They are stored in several folders under a main folder. - These files are random access files. - There can be around 4000 files in total for example.
I wrote a program which reads a current csv file and stores contents in array. Then I store name and path of companies in folders (which I was talking about). Then I match one company from csv (stored in array) to companies in user's folder (again reading from array). If found I insert data in the file (random access file). This whole process takes for eg. 2 min my system. A similar program was written years ago by someone in powerbasic which takes slight less time if run one but if run for multiple csv files it takes only a few seconds doing the same thing for other files. When I do the same thing (by writing code to .net dll) and making a dummy app to run it, no matter how many times I run it takes same time. And is way slower than the earlier one (PB) one I was talking about. But if I paste the same code in my win (.net) app and not use .net dll then it runs a bit faster.
I need to show status so if I pass my form's label reference to .net dll and it updates it does that slow down process a lot. As I mentioned I am trying to process the files and it takes longer in .net. What should I do to get best performance? Unfortunately due to unexplainable reasons I cannot change the format or use a db. The files which I am reading/writing (random access files) are use by other products so I have to stick to that format. What I am doing is storing the location of those files in array so that I don't have to search folder again. that is not taking time. But opening reading and writing files is time consuming if I am doing it for few thousand of them. A similar program in powerbasic (developed years ago) runs fast. Running code thru .net dll is slower than running it thru program. Why?
I have an integer and a button.After clicking on the button, the integer value would be for example 10.Then how could I store that value 10 into the memory, and when I click the button again, the new integer value now is 5. I'd like to add up the old and new value together and write it to a text file.
i am try to read from a file and then split the data and store them in an array but i am getting an error. can someone please point to the right direction here is the file i am trying to read from
I am unable to read from the text file in VB. I want to read the contents for text file and store them in array. See my code below and the text file. How should I read this text file.
'Purpose : This program will read student name & final marks for a set of students from the text file and then calculate & display class average, class standard deviation, number of students above class average, name of student with highest mark, number of students with A's(90-100), B's (80 < 90), C's (65 < 80), D's (50 - < 65) and F's (<50).Calculate for standard deviation of a set of numbers:Step1. :Find the average Step2. : Square the difference between each number and the average
I am trying to store an image in a structure, then display the image in a picture box by referring to the structure field. Right now I have declared the field in the structure as an Object, as in Dim objPicture As Object, then I am initializing it as objPicture = Image.FromFile(filename.jpg). When attempting to display it, I have coded picImage.Image = structure.objPicture. For anyone with knowledge on the subject, you know this won't work.
I want to get all the words before the tab into one array or to create a new text file and the all the words after the tab into another array or create a new text file too.
Here my function to get the words before tab into an array :
Protected Sub MakeWordListBeforeTab() Dim filename As String = "D:lao�0001.txt" 'read from file'
[Code].....
I wrote the above function to get all words before tab but I got all the words into array. I've been trying to use the Split method above. What is another method to split those words ?
I know this can be done with regular expression but I don't know regex yet. If you can show me how to get this done with regex it'll be awesome.
I am trying to create the following program Store in a 1d array a set of 5 place names and in a 2d array the distances between the places. Ensure that the order of the places is the same in both arrays. When the names are places are input the distance between them is displayed. If they are not both in the table a suitable message is displayed
Dim town(1 To 5) As String
Dim Dist(1 To 5, 1 To 5) As Integer
Dim First As Integer
[CODE]......................
I think the best way forward is pass a parameter to the function findnumber.
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 have a program that will compare an array of grocery list items glist and an array of coupon item clist.When I compare the two and if there is a match somewhere in the array I want to have a picturebox visible.When there is no match, I want the picture box not to be visible. [code] The code seems to work great until I come to the else statement.When the code finds a match it displays the picture box and the msgbox without error, but as soon as the message box is cleared, even though i've input it as an ELSE statement, the picturebox goes false again.Does anyone have any idea of how I can "hold" the picturebox to stay visible while the match between the arrays exists?
The company require an application that displays coffee usage information for the managers of CostaB Coffee. Sample data has been provided for last years (2011) monthly usage amounts in kilos and is as follows: 400.5, 450, 475.5, 336.5, 457, 325, 220.5, 276, 300, 320.5, 400.5 and 415.
Requirements: The main form will allow the user to enter and store monthly amounts in an appropriate data structure. It will enable the users to calculate the total usage for the 12 month period and average monthly usage. A further requirement for the application is for the users to be able to display the monthly totals in ascending (smallest to highest) and descending (highest to lowest) order of the monthly usage amounts. Utilise appropriate formatting for input/output and include appropriate error trapping and data validation in the application.
If I have a list of list of myparams, can I access the sub structure of my params directly by indexing the list emelments?, eg..structure myparamsdim p1dim p2end structurepublic my_list as new list(of list(of myparams)))' now try to access list data directly by indexing..my_list(2)(3).param2 = 3but line above cuses error msg= Error 1 Expression is a value and therefore cannot be the target of an assignment!VB2005 starter
Public Class frmMain Private strSpark() As String = {"PR214","PR223","PR224","PR246","PR247","PR248","PR324", "PR326","PR444"} Private strBrands As String(,) = { { } } End Class
