VS 2010 DBF File ADO.NET Connection - Read Only - Update Data
Oct 21, 2011In VS2010 VB create a data connection using this:
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Read In A Csv File, Manipulate The Data And Then Update The Existing File?
Nov 24, 2010I have a csv file that needs to be automatically updated on a daily basis. I am writing a vb.net app to accomplish this. However, Im having issues with the entire process.I need to be able to read in a csv file, manipulate the data and then update the existing file. I have dabbled with using the Excel objects but I need some assistance.
View 6 Replies[2008] Error - Unable To Read Data From The Transport Connection: The Connection Was Closed
Mar 15, 2009I have a simple scraper. It works on some websites, but on some there is this Error:
Quote:
IOException was unhandled Unable to read data from the transport connection: The connection was closed
It is occuring at "Dim htmlresults As String = Urlcontents.ReadToEnd()".
'Create the HttpWebRequest object
Dim req As HttpWebRequest = WebRequest.Create(URL)
'Set the timeout to 1 second (or 1,000 milliseconds)
req.Timeout = 10000
[code]....
TCP/IP - Unable To Read Data From The Transport Connection
Aug 4, 2009I'm building a TCP/IP server that sends small strings and updating my database, every time the client connect i get this Exception:
unable to read data from the transport connection: an existing connection was forcibly closed by the remote host. The client successfully able to connect to the server and everything working fine even though this Exception raise, but if i send 3-8 request in the same second the database do get updates in all of them but the server failing to send "OK" response to the client in about 3-4 of those requests, the line i get the error is this: bytesRead = mClient.GetStream.Read(readBuffer, 0, BYTES_TO_READ)
Unable To Read Data From The Transport Connection
Nov 22, 2011I am getting following exception:
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Visual Basic 2010 SQL Database Connection And Update
Jan 24, 2011I do apologise if this has been answered 9000 times already. I have looked over forums and google for days now. I want to connect to an sql database (created locally in the windows form project) i want to then interact with this db (add, update, select) however i am struggling with the connection string (server:? localhost?) the update functions (tableadapter.update(dataset)?) adding new information (newrow etc).
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VS 2008 Unable To Read Data From Transport Connection
Nov 23, 2010I am trying to send messages from my application to a yahoo account and I am getting the following error:failure sending mail..Unable to read data from the transport connection: net_io_connectionclosed.Is this because of the LAN and work or something else/ [code]after the line mailobj.send executes it stalls for a while and then the application ends.I checked all the parameters and they seem correct
View 4 RepliesUpdate The Database But Also Read Data From It?
Jan 21, 2012so i just bought a years web hosting with godaddy, and apparently i have one ms SQL 2008 database, is this compatible with VB ? and if so how can i link them together? i need the user to be able to update the database but also read data from it.
View 15 RepliesRead 2 Connection Strings From External File?
Sep 9, 2011I have a situation where I have a vb.net program that uses two connection strings. This program will be used on multiple web servers on multiple domains and the only difference for any of them is the two connection strings.What would be the best solution to read in these connection strings from a file separate from my actual .vb code?
Ideally I want to be able to drop the .vb and the connection string file into its own folder on any number of asp.net websites and not update anything else (for example add any connections to the web.config or anything) than the external file containing the connection strings, I assume something like xml would suffice?
File Deletion And Copying - Update Connection String
Jan 29, 2009This is what I have for code:
Private Sub restoreDatabase(ByVal dbName As String)
Dim newDbName As String
newDbName = dbName.Substring(dbName.LastIndexOf("_") + 1)
My.Forms.portfolioGenerator.Close()
[Code] .....
It seems like it should be pretty simple, I take in a file name as a parameter, create a new name for it, delete it, then try to copy it back from an older version of the same file, and update the connection string. However, it continually tells me that "The file 'filenamehere' already exists." If I set overwrite to true then it goes through just fine, except it doesn't actually copy the file. Obviously I also check the folder, and the file does in fact Not exist...I've also checked all the file paths and what-not, they are all accurate.
Read An Excel File Without Using OLEDB Connection String?
Jun 8, 2012How to read an Excel file without using OLEDB connection string?
View 2 RepliesVS 2010 Serial Read And GUI Update Is Slow?
Jun 17, 2010I`m trying to write a small program which connects to a serial port at 115kbps and reads a stream of continuous bytes from a microcontroller. The program should then graph these bytes by time. Ideally this all happens in "real time" and as quickly as they can be sent.With a 50ms serial write delay on the micro the VB program keeps up fine, but if I lower the delay any further, say down to 1ms, the update can`t keep up and the serial buffer just grows.I wasn`t expecting the bottleneck to be the PC side so it`s likely my code is doing something wasteful. Or maybe it`s the graphics which are drawing slow?
Private Sub DrawGraph()
Try
Dim y As Integer = m_Y
Do
[code]....
VS 2008 : How To Handle Disconnect : IOException Was Unhandled:Unable To Read Data From The Transport Connection
Apr 1, 2009I am building a chat client/server. And I can connect and chat just fine, but when a user disconnects, the server does not recognize this and acts weird, often spamming the last message that was sent by the user..Also, it's like the client does not disconnect from the server even when I close the client app. Once I exit the program, VB acts like it is still debugging. Once the server is shut down however, I get this error:
IOException was unhandled:Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
serverStream.Read(inStream, 0, buffSize)I don't know how to make my client and server accept the fact that a client has disconnected...
Read Specific Cell From Excel File Using OLEDB Connection?
Mar 9, 2010How can I read specific cell from Excel file using OLEDB Connection with VB.NET?
View 2 RepliesUpdate Excel Values That Read From The Data Table In Ms Word?
Mar 3, 2010I have to do an application using VB.Net .The application must be able to capture values from ms word data table and map them to ms excel sheet. For your information, i have over 6000 files ms word document, each of them contains 4 data tables using the same format .Then i have this code for read from data table 1 in document 1:
Dim
wb As
Excel.Workbook<br/>
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Using A Data Reader To Read An Excel Spreadsheet And Want To Update A SQL Express Table?
Mar 10, 2009I am using Visual Studio 2005. I am using a data reader to read an Excel spreadsheet and want to update a SQL Express table. The datatypes in this table mimic a software application I will eventually be passing data to and are listed in the comments in my code. No matter what I do or change, this will not run. I even populated my spreadsheet with zeros and this will not run. I have found many suggestions on the web and tried changing things but nothing seems to work. I also don't know specifically which variable is causing the error or the proper way to make sure there are no blanks in this spreadsheet.The error says "conversion from string "" to 'Double' is not valid Here is my code:
Public Sub btnUpload_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpload.Click
'Connect to the Excel spreadsheet
Dim xConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & txtFileName.Text & ";" & _
using a data reader to read an Excel spreadsheet and want to update a SQL Express table
VS 2010 Text File Read From Read Until?
Oct 3, 2009I'm trying to make a program that can read .mp3 data (Such as Artist, Album, Year, Track number, etc), but I need to be able to do two things that I have no clue how to do:
1. Read starting from a specified string (E.G, On one line it states: [code]
2. Read until a specified string (E.G, On the previously stated line,I need to read starting from what I said, up until.
Read XML File - Read The Data From ?
Feb 13, 2010I have a fairly simple XML file that I just want to read the data from.
It has 3 levels, root, main section and items. There are no attributes. I want to go to the first main section by name, then read in all the items. The items all are named the same. I've seen this done before, so it should be ok. No writing will be done. Basically this is a static data file
File looks similar to the following:
CODE:
Read Data Of A SQLite Database File And Chart Data Using Basic Bars, Pies, Lines?
Feb 24, 2010I'm only getting started with VB.Net, using VB Express 2008.Using the System.Data.SQLite wrapper, I need to read data off a SQLite database file, and chart data using basic bars, pies, lines, etc. Nothing fancy.
View 1 RepliesVS 2010 Update Data In DataTable?
Mar 17, 2011How to make the data in the DataTable automatically change when there is the Insert, Update or Delete.my code like this:
VB.NET
Imports System.Data
Imports System.Data.OleDb
[code].....
Read Xls File Line By Line Without Using Connection String?
Dec 26, 2009I need to read a xls/xlsx/ods/txt file line by line,to get a column name of file .how to read a file line by line in vb.net?
View 1 RepliesVS 2010 : Read Data From A Webpage?
Apr 26, 2010I have a login form and what it does its uses datastream or webrequest and post's a url to a php file i have. If the login is true, it will return a 1, if it is a bad login, it will return 0. But my problem is that the acars wont read 1 or 0. it reads all of the html on the page. Is there anyway i can make it so it only displays a 1 or 0 to the acars, and not all the html of the page?
View 1 RepliesAccess App.conf File For The Connection String In Vs 2010?
Jun 17, 2011I am developing a winform application which targets .NET Framework 4. I would like to get the connection string from the app.conf file but the Imports System.Configuration.ConfigurationManager fails. I can do a Imports System.Configuration but I cannot get to the .ConfigurationManager.
View 7 RepliesUpdate Data In SQL Server Express 2008 Using VB 2010
Jan 17, 2012Here is the code snippet
objCommand.CommandText = "UPDATE tblCustomers SET weight= @weight, height= @height WHERE id=@id "
What i want to do is the following:
I have a form and i want,by clicking the appropriate button, to update the height and weight values which have the specified primary key 'id'.
The primary key 'id' is of type IDENTITY.The problem is that the above code does not work. It says Must declare the scalar variable "@id".
VS 2010 List(of T) Update Data Of A Specific Member
May 2, 2011I have a List "MyList(of MyStruct)"
[vbcode]
Public Structure MyStruct
Public ID as Integer
Public Value as Integer
End Structure
[/vbcode]
At some point I need to update the Value of the member with ID=X, but I'm stuck.
Do I need to search for the index of that member using FindIndex and then set the value like MyList(index).Value=Something?
Or
Find the member itself by using Find, but how would I then set the new value?
VS 2010 List(of T) Update Data Of A Specific Member?
Apr 25, 2010VS 2010 [RESOLVED] List(of T) update data of a specific member
View 6 RepliesVS 2010 - Correct Way To Read Data Into Textbox
Jan 31, 2012I'm trying to read data from a text file into an array and then loop through all the lines and display it into the textbox, only problem is i want each line on a new line so this is what i have:
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But that adds a newline to that last line causing a out of bounds error.How do i make it add a newline for each LINE except the last one?
Update .mdb File Data Using Textbox?
May 5, 2012i want update .mdb file data using Textbox
Dim connStr As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=staffdata.mdb"
Dim sqlStr As String = "Select * from staff"[code]....
how can i update .mdb file data using Textbox,for example: when i click update button afterinput the password in TextBox1,the staff table will update my new password
VS 2010 - Using ComboBox To Update / Edit And View Saved Data
Apr 5, 2012I am trying to use the combobox to update/edit/view the saved data (in contact form) from sql server.
My Load_Combobox (in contact form):
Private Sub Load_Combobox()
'Type
cboType.Items.Add("Director")
cboType.Items.Add("Principal")
cboType.Items.Add("Project Manager")
cboType.Items.Add("Technical Manager")
[Code] .....
The problem now is when I saved a record into sql server (EG Technical Manager) and try to view back the saved data, it always show the first item (Director) in combobox. But, my sql server has saved is "Technical Manager" for that saved record.
Read Joystick USB Data From Visual Basic 2010?
Aug 18, 2011I try to find the example for reading data from USB Joystick using VB2010 but I couldn't. .
I found some but all were VB6.0.
Do I need to install DirectX or which component should I use. I can read data from mouse and keyboard.