I can get the data in the list box to line up properly?
The code is a follows:
Dim sr As IO.StreamReader = IO.File.OpenText("c:\account.txt")
Dim fmtstr As String = "{0,-15}{1,10}{2,15}{3,15}{4,15}{5,15}"
Dim accountNumber As String
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how do I sort a list properly so the numbers are truly in order?
BAD GOOD
1 1
10 2
11 3
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I have a text file with an unknown number of lines. I want to read this file line by line and send each line's text in a check list box. But how am i gonna do that when i don't know how many lines exist in text the file? [code]The code above reads only the first line. I tried to do it as in vb6 using while not eof(but here i don't know what to write cause my file isn't opened in a certain channel).
View 4 RepliesI have code that reads the whole file, not line by line.
Here is the code:
FileOpen(1, filename, OpenMode.Input)
Do While Not EOF(1)
datatodisplay = LineInput(1)
Loop
FileClose(1)
I would like to know how I can read the file line by line and then add all results into an array list.
I want a textbox's text to be moved line by line to a list box.
textbox1.text:
car
bike
future listbox text:
car bike
I currently have a list of words in a text file sorted in to alphabetical order and put into lower case, but I would like to be able to also display the line numbers on which these words are associated with.. but only one instance of.
For example,
"This is a random text
file that I
have just made
up this second"
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As you can see above, I would like to show that "this" for example appears on line 1 and 4. Hopefully tabbed so that it keeps a nice look to it.
I am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
I have a VB.Net 2008/Access 2007 app that I can�t get to display data in an organized way on a listview. The listview displays the data in the order that the data was entered in the products table. In the SQL statement that loads the listview I put ORDER BY SupplierTbl.CompanyName but it doesn't do it. The listview shows the data in the order that the records were entered in the database. So then I was going to settle for if I can get the listview sorted by clicking on the column header.If I can get that to work then that would be acceptable. So I then implemented the sort routine. The sort works and it doesn't.If you click on a column header then all the rows show the information nicely. The database has an OLE object column for storing images. Customer wants images stored in the database not file paths. When you click the listview the image displays in a picturebox.
The proper images display when the listview is clicked when I use the SQL statement below without the ORDER BY. But when I click on a column header and reorder the display it's no good. If you click on a row in the listview the wrong image is being displayed. It displays them in the order as they were in before the sort. All the other columns look good and are behaving except for the Image column. So that then makes me wonder if my original problem with the ORDER BY is directly related with the OLE object column. Is there something about this data type that I need to know to manipulate it in SQL? My reaction is that maybe since this column is resource heavy it goes by different rules. Can someone please tell me what I need to do to make the end result have some order? This is the SQL statement without the ORDER BY:
command.CommandText = "SELECT ProductTbl.ProductID, ProductTbl.PartNumber, " & _
" ProductTbl.AltPartNumber, ProductTbl.Description, ProductTbl.SupplierID, " & _
" SupplierTbl.SupplierID, SupplierTbl.CompanyName, ProductTbl.Category, " & _
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I am reading data from an XML file. This local XML file will be updated by another application, and I will need to periodically re-evaluate the XML file, and only import new data into a list box. Furthermore, I want to be able to click on a particular item in the listbox, and display the other values about that particular XML entry.
So, I suppose this is a multi part question. What is the proper way to import only NEW data into the program, what is the proper way to store the data, and how do I associate a value in a listbox with the data stored elsewhere?
I've considered multidimensional arrays, but have been told that strings to char arrays and then back to strings is a terrible way to manage the data, but was never offered an alternative.
i have three textbox in my program
How do i update my textbox3 Data like this
textbox3 line1 = textbox1 line1 + textbox2 line1
textbox3 line2 = textbox1 line2 + textbox2 line2
textbox3 line3 = textbox1 line3 + textbox2 line3
textbox3 line4 = textbox1 line4 + textbox2 line4
textbox3 line5 = textbox1 line5 + textbox2 line5
I am developing a program where i will download and save an xml file from a url as abc.xml. I open the abc.xml in a datagridview with a dataset without problem.I am confused how can i read raw per raw the datagridview and assign the data in a database table? i am using vb 2008 + msde2005 express.I show the whole content of the xml file in the datagridview with the following [code]I dont know how to create a loop where i can read the datagridview line by line save data in variables (ex.strings) and save it in a databese table?
View 6 RepliesSo my most recent project hinges on the ability to open a selected XML file and display the names of certain fields in a listbox control. This normally wouldn't be challenging except that the following variable is equal to vbNull (Nothing). Dim XMLReader As New System.IO.StreamReader(OpenFileDialog1.FileName)
View 5 Repliesi have three textbox in my program. How do i update my textbox3 Data like this
Rich_textbox3 line1 = textbox1_line1 + textbox2_line1
Rich_textbox3 line2 = textbox1_line2 + textbox2_line1
Rich_textbox3 line3 = textbox1_line3 + textbox2_line1
Rich_textbox3 line4 = textbox1_line4 + textbox2_line1
Rich_textbox3 line5 = textbox1_line5 + textbox2_line1
it will continue to last line of textbox1
i currently am running vb 08 and need coding help about how to save text from a listbox and load it on app start up.i also need a code to automatically place a .txt file into a folder when installed
View 1 RepliesThe Question sound like this.Assume the theater keep 20% of its box office receipts. Use the Following test data to determine if the Application is calculating properly :
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I did this Imports System.Data Imports System.Data.OleDb Public Class Form1 Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
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I have some numbers stored in a notepad and i want to display them line by line on a form that has a label or textbox whenever i click a commamd button. These numbers should display one after the other rapidly and should stop run whenever another command button is clicked hence the lucky is seen on a label or textboxes, is just like a raffle.
View 3 Replieshow can I read data in a file line by line..for eg in my project I have to store movie information in a file and every movie's info has to be in one line..this is my code for file
Private Sub btn_Read(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
sw.Close()
fs.Close()
fs = New FileStream(filetxt.Text, FileMode.Open, FileAccess.Read)
[code]....
I am working on a Data Survey Project and first I have a few questions about the different types of databases, and second, I need help querying my tables that have relationships.
1. I need a database that is stand alone. It is just the back end for the program. Simply to hold all the data an employee gets while out on a job. So would I be better using access, or SQL Express? I have played with both, but I do not want a large redistribution to my user machines. When I compile and produce this app does the SQL Database still work without installing any SQL Technology? Or do they have to go in after they install my app, and install Express?
2.Overview: I suppose depending on the first question regarding the database, it might change this question a bit, but none the less...I have 4 tables( using Access at the moment) I will be generating Reports based on data in the database. I haven't gotten that far yet. *Project* is the table that holds all the details that pertain to the job and client. It has a "one-to-many" relationship to *Survey*. So for one customer there are going to be many Survey Records. *Project Type* also has a 1-to-many back to *Projects*. Parts is kind of an orphan, but is linked to the *Survey* table with a one to many. So there can be many parts for one survey. I wanted this table for a drop down box, so the user could just simply select what hardware he was using instead of typing all the names and parts.
So in VS 2008 using the Designers and related Query tools, how do I constrain the Survey Data to one Customer? I have one form that opens from a button that is "New Project" and then there are all the *project* fields listed, so the user fills out the info and hits accept and that opens a new form called "frmSurvey" I need to add some code to the accept button to check what type of project is selected from the frmNewProject and then run a select query based on that. How do I write query statements in the code section of the form, without using the Visual Database tools?
Ill stop here, and get these questions out of the way first. If I could just get a handle on how to use the data properly with different forms and different controls with my queries, that would be great.
DATABASE
CODE:
I am currently using double data types. The problem I am encountering is that sometimes the user will have to input a value of 0 in the required text box and this creates an error. My question is what data type will allow the user to input 0 and allow the mathematical functions to work properly. Decimals maybe?
View 8 RepliesI have a window form with a label. On the form I have a dataset, bindingsoure, and tableadaptor (all created by the IDE in response to binding the text property of the label) To fill the datatable, the IDE created this: Me.ClientsTableAdapter.Fill(Me.MyDataSet.Clients) Works fine. The bound field is a phone number, stored in the db as a 10 digit numeric string I need to format this with the standard ()-, and I have a function that will do just that. How can I apply the formatting so the phone number appears in the label properly?
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i Create a small database for learning table contains first name,age,and gender only when i search a persons by name in my applications applications will show the rest of other details.in my database there is 2 persons who first name = John i'm only able to get one of John instend of two johns i'm using mysql data reader.how do i get both of then in to my application
Imports MySql.Data.MySqlClient
Public Class Form1
Dim mysqlconnection As MySqlConnection
Dim mycommond As New MySqlCommand
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I have a list of file names and there locations as follows:
c:ICTAUTOCAD_2010Customisations2009040920090409.lsp
c:ICTAUTOCAD_2010CustomisationsAdvanced OffsetLSPADVANCED
OFFSET.lsp c:ICTAUTOCAD_2010CustomisationsLockDWGLSPLockDWG.lsp
c:ICTAUTOCAD_2010LSPacad2010doc.lsp
The list is very basic but should be appended to say:
(load "c:ICTAUTOCAD_2010Customisations2009040920090409.lsp")
(load "c:ICTAUTOCAD_2010CustomisationsAdvanced OffsetLSPADVANCED OFFSET.lsp")
(load "c:ICTAUTOCAD_2010CustomisationsLockDWGLSPLockDWG.lsp")
(load "c:ICTAUTOCAD_2010LSPacad2010doc.lsp")
How can this be done with VB.net?
This is what I'm sure will be the first of many noob-ish questions from yours truly... I'm studying as a mature student for a Computing Degree (encompassing web design, hardware, programming and systems analysis). The programming seems to be my weak spot this year. I enjoyed C++ last year, doing basic console applications, but progamming visually with VB in Visual Studio 2008 I'm struggling!
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I need to fill a List with data from a DataColumn fetched in dataset. How can I achieve that in 1 step without looping through the entire table in dataset.I want something like this:
Dim lst as List (of Integer) = ds.Tables("Customer_Data").Columns(0)
However the above line is wrong as System.Data.DataColumn cannot be converted to System.Collections.Generic.List(Of Integer)
I'm trying to list each line from a text file to a combobox:[code]
View 5 RepliesI have a user control housing text labels, buttons, images, etc.Is it possible to add this as a line item in some kind of list (without building a custom control to resize, scroll etc)?Could list view work?
View 1 Repliesvb.net is SOOOOOOO annoying.i am drawing a list of lines to a control. So, I declare:Private Lines As New List(Of Line) Private CopyOfLines as New List(Of Line)In code, I have a custom Class called "Line".
I am wanting to reuse the list called "Lines" so I can start a new list while retaining the old list. So I copy it's contents to "CopyOfLines", then clear the contents of "Lines":
CopyOfLines = Lines
Lines.Clear
Problem is the contents of CopyOfLines ALSO gets cleared! Is there no way to break the connection of "CopyOfLines" to "Lines"? This seems so unnecessary. After all, if I say:
a=10
b=a
a=0
Then (b) will still = 10 while (a) = 0.
Why does vb.NET have to break such simple logic and turn it into a gargantuan issue? I wouldn't mind it as much if the MSDN library would make it possible to find references to "List (Of whatever)", but all I get are references to text in a textbox. It seems that every time I go to the MSDN, I get a convoluted, runaround explanation or simply no documentation of something someone has done in their own code? Where did THEY find the information?
I am writing a tournament program for a trading card game. I want my list box to have "Player 1 vs. Player 2" in one line of a list box and i want it so there is no way duplicate Players can be in the list box. Is there a way to code that or do i need to use something else?
View 9 RepliesThis is what I want to do as seen in C#(loop against a list and fill another list from its data using Linq)
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