creating a vb application that reads info from a xml file and displays the content onto a form.here is the content of the xml file:
<?xml version="1.0" encoding="utf-8" ?>
<Book>
<Chapter title = "Introduction">
</Chapter>
[code].....
All the code i found for multi-threading is complex and not clear.What i want to do is creating a thread for reading and analyzing a big text file on Form_Load event, so that the form UI building continue without waiting for reading and analyzing the file finish.
View 2 RepliesI want to read in a file and as I do put the contents into a datagrid, can this be done ?I have the following code so far
myPath = "C:SYNC_DATA�0 - LGW�5 - Archived�0 - IST Logs2008"
myFile = "istlog" & d.Year.ToString & d.Month.ToString.PadLeft(2, "0"c) & d.Day.ToString.PadLeft(2, "0"c) & ".txt"
Dim sFile As System.IO.StreamReader = New System.IO.StreamReader(myPath & myFile)
[code]....
I get an error on "adapter.Fill(dt)" which is propably incorrect.How can I get the ontents to be displayed in a datagrid on the screen called "DataGridView1"
I am working on getting ready to make a chat client. I want to be able to click a button and a new form come up as a tutorial to myself. Here is the code I am currently using.
CODE:
i am currently new to visual studio and am working on a small project for an it database. I am using a dataset connected to SQL2008, what i am struggling with is i would like a save button to check to see if any changes were made before the form is saved and then if any are detected then send it back to another sql table called "LogDetail" as a history, i hope that makes sence? I have two tables called "NewDetail" and "LogDetail".
View 1 RepliesBasically I want to Create a new thread which create a new timer.I can create a new timer in different button but when one of the timer has an idle time or sleeps the other timers also sleep. I do think because they are running in the same thread.
View 7 RepliesI have a small program that contains a webbrowser object, 2 labels, and 3 listboxes. For some reason, whenever I try to hit Debug, it gives me the following error:
System.InvalidOperationException was unhandled
Message=An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object.
Source=Test3
[Code]...
How do you read the data from a file on the computer? I have an mp3 stored on my root folder and I want the form to read the raw data from it so I can do some encryption etc.
Dim fileOpen As New IO.StreamReader("C:file.mp3")
Dim stream As String = fileOpen.ReadToEnd
TextBox1.Text = stream
I have the following code under my button: [code] It is supposed to open "Database.bin", search the file for whatever the user types into SearchBox (a text box), and add to DisplayBox (a list box) every line of that file that contains the string the user searched. [code]
View 3 RepliesI have a text document with the content:
[Code]....
Now, I want to put the "1.hi" in a TextBox1 and "2. all" TextBox2 and the "3.lol" IN TextBox3 and finally the "4.blabla" in the TextBox4 Just split the document into text boxes.
I am using the following code to parse a XML file of mine:
Dim xml As String = "<?xml version=""1.0"" encoding=""Windows-1252""?>" & _
"<theref:theref-msg xmlns:csr=""http://www.xxxxx.com/Schema/csr""
xmlns:theref=""http://www.xxxxx.com/Schema/theref"">" & _
[code].....
I am having such a hard time reading a XML File!!! And I believe this is quite simple.I have to read the following XML:
<?xml version="1.0"?>
<RadioAdvertisement>
<Campaign>
<OrderList>
<Order>
[Code]...
This code will create several tables in the dataset: one of them is "Adv" table, which contains ALL "adv"s from BOTH "orders". This is not what I want.I can handle this by just reading it as a text file - line by line... But I believe this is not the correct way to do this, since there are many tools in VS to do this (right?) ... and also, maybe I can learn something from this "chalange" This is when I ask for your support. How can I do this the "correct way"?
I am creating a program for an existing database that stores the info into the database. So can I link an already existing database in MS Access to a GUI?
View 2 RepliesI want to put a function that reads a text file and put it in textbox1. I used this code to read the last line
Textbox1.text = Io.file.readalllines("C:c.txt").last
but I want it to read the third line.
I have a text file saved with url's to some music files, example below:
C:musicmusic1.mp3
C:musicmusic2.mp3
C:musicmusic2.mp3
And I would like this text to be placed into a Binding Source that will be read by a Listbox.
how to read this file into my structured array. it's a 'quiz generator' program. i have a .dat file with a set of 10 questions, and i need to load it into my structured array:
vb
Structure testQuestion
<VBFixedString(100)> Public question As String
<VBFixedString(30)> Public choiceA As String
[Code].....
Their is a problem whenever I want to write something to a text file. Please see the attatchement to see what happens when I'm debugging. I've put the code for writing to file right at the end of the program.Here is some of the code which shows how the program writes to and reads from the file:
Option Explicit On
'Force all variables to be declared.
Imports System.IO
[code].....
So i have one file, that has one header that tells me if the bytes are in little or big endian format.The content of the file after the file is something like this, one byte that indicates a new "section", then several bytes until the other "section". This bytes each one represent the number of the bytes that i need to read in the second section.
[Code]...
Here's what i've got so far, i've written all of the data that i'm going to put into my config file, however i'm having trouble reading the specific string values that I need from that ini file. The parts of the ini lines I want to get are the values in between the I've tried using streamreader a couple things but i'm having trouble figuring that out. I need to parse each line of the ini file to get that value in between the single quotations, so that I can set the value for my richtextbox background and text color as well as a few other things that i've set up in my notepad including tab spacing and so on. lots of these different values need to be converted from a string value to integers, and boolean values as well. (4 of them, the rest of them don't have to be changed because they are already string values when my application reads them to determine it's application load settings.
EDIT: I just noticed in the preview that this is from the version of the app where I had streamwriter write "______ value=" & Something to a file. lol some of the (')s are still in this version, so please excuse that little part. I had them in, but took them out so that I could trim data to get a value easier, but I want to use (')s hopefully when all is said and done.For example, just to restate what I want - in the ini file it will read [setting name] value='VALUE'I want to be able to "get" the string value of "VALUE" within the ini file between the 2 single quotations '
I have a code that writes down # and the date, for example:#5/13/2012..Into a text file. The thing I need is to be able to do something like this:[code]Cal is the file that I want to read.DaySel is a date/time picker.
View 6 RepliesI have an application that gathers data from a SQL database that is used by a 3rd party helpdesk application.My application is pulling out information of the number of hours worked by each engineer for the current and previous 2 months.Also as part of this process, my application works out the target hours for each of those months.
My application has 3 groupboxes whose label is generated at runtime. My application gives the Groupbox1.text the name of the current month, Groupbox2.text the name of the previous month, and Groupbox3.text the name of the month before that (e.g. Mar, Feb, Jan).
What I am trying to do is have 2 text boxes for each month where I can enter the number of engineer holidays taken and the number of public holidays if any. I want to store these values in an XML file, and I guess they need to be stored to match the Groupbox text (i.e. Mar, Feb, Jan).
When the application starts, I need to parse that XML file and re-populate the text boxes with those number of days - BUT if the month has moved on, so that the Groupboxes are now called Apr, Mar, Feb then I want the Mar and Feb data to be loaded, and I want the XML file to be updated so that Apr is added and Jan is removed from it.I want the XML file to keep the current and previous two months figures only.
I have just recently been using VB 2010 after using VB5. I have noticed a lot of changes. The problem I have is that I wish to open and save text files to and from arrays in the background. I've attached what I would do in VB5. I have searched around, but all the examples I find use a Textbox instead of an array. Can anyone show me how I can do this with VB 2010?
View 3 RepliesI am trying to create a simple parent-child form in VB2010. I use a datagridview for each table/datasource and each is bound to the paretn/child table and each table grid fills correctly. What I want is the parent-child relation to enforce filling the child table with only rows that fulfill the current row on the parent. I have created a DataRelation in the form load, but it will not permit a relation between tables in 2 different datasets. If I attempt to place both tables in a single dataset and define the PK-FK relation in the SQL Serve,r I cannot create 2 separate datagrids from the same dataset.
View 12 Repliesi want to create a login form in vb using the visual studio 2010 and i am using the following code:-
[Code]...
I have a project that will need several forms with a similar structure - a Data Grid View control, a few buttons and some textboxes. They are not similar enough to use just one form and change things programatically so I would like to create a "template" and add several copies of it into my project. My first attempts have failed miserably, ending up with lots of "conflicts" and "duplicate items".
So, how should I save a form from my existing project in such a way that I can then load in multiple copies (giving them suitably different names) without having name conflicts?
i'm working on a project that is reading text from a file and displaying totals on my form.My issue is that everytime i press my btnCalculate Nothing Happens.Here is the File i am reading from which is in my debug folder.
Otto
Rob
B
Otto
[code].....
I want to read a VB or C# Visual Studio project file so I can find out which files the project uses (code source files, not images or whatever).I simply opened a vbproj and csproj file in notepad and found that they are in XML format. A simple example follows. The red parts is what I need:
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<blabla... />
[code]....
However, it seems it cannot even find the Project element, because the query errors saying "Sequence contains no elements" on the 'Single' call...
Does VB 2010 offer native support for reading and modifying ID3 metadata in MP3 files? A brief search through MSDN shows me nothing, and I see someone says he had to write his own library of code for it. But that was some years ago, when you had to write code to access JPEG Exif metadata, and I know that's changed with the Image class and the GetPropertyItem method; so I'm hoping MP3 files have their own methods and properties now for this.
View 4 RepliesI have a config.txt where some of the parameters are set. When I start my app, I want to read that textfile and get these values. But the thing is I want to do it during the splash screen time. Is it in the applications event.vb?
View 3 RepliesI am trying to create a console application that allows me to read the contents of a text file and saving the data by specific name in a set of files. For example, the text file I am going to read is a tab delimited file. Some content of the file includes full name, school, location, and whatnot. I want to save the content by school name in a set of files that have the school names. In this case, everyone that attends "Central" will be saved in a file named Central.txt.Everyone that attends "Central Park" will be saved in a file named Central Park.txt.These are the sub procedures I came up with so far:
Readfile()
'Use StreamReader
WriteFile()
And I think I am on the right track of reading the text file:
Dim objStreamReader As StreamReader
Dim strLine As String
'Pass the file path and the file name to the StreamReader constructor.
[code]....