Import Large Textfiles (Delimited) To Microsoft SQL / MySql Server?

Jun 27, 2011

Is is possible to import or migrate .txt files to my database? Im using VB 2010 Express. Im just a newbie in Visual Basic and I need to import a text file into my system.


Reading And Parsing Large Delimited Text Files?

Nov 23, 2011

I'm busy with an applicaton which reads space delimited log files ranging from 5mb to 1gb+ in size, then stores this information to a MySQL database for later use when printing reports based upon the information contained in the files. The methods I've tried / found work but are very slow.

or is there a better way to handle very large text files?

I've tried using textfieldparser as follows:

Using parser As New TextFieldParser("C:logfiles estfile.txt")
parser.TextFieldType = FieldType.Delimited
parser.CommentTokens = New String() {"#"}


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Dec 18, 2009

I need help taking a tab-delimited text file and dumping it into a new worksheet in Excel. I get a ton of errors when I attempt to name the WorkSheet or add it to the WorkBook. I want to be able to control the name of the new worksheet.


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Mar 5, 2009

Now i'm coding for a project in that allow user to browse to text files (i am done), after that i have to import this text file into access.

The problem i have to import a pipe delimited file (it is: #), that '#' help to distinguish each filed.

Example: my text file is: #BC2323#23241#12345. This mean that: There are 3 fileds in it: BC2323; 23241; 12345.

There is my coding for browse any text file:

Private Sub btnBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBrowse.Click
Dim alltext, lineoftext As String
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Oct 21, 2011

I used to just code up a module that looked like this Ref to MS Access 11.0 Obj Lib was set

Dim myaccess as New Access.Application
myAccess = CreateObject("Access.Application")
myAccess.Visible = false

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Sep 24, 2009

I have to import a tab delimited file into Excel and export it back out to correct a formatting issue caused by FoxPro. I need to pad a column with 10, Zeros and that is good with this here: objxl.columns("B:B").numberformat="0000000000". However I have 2 cells in the sheet, row 1B and 2B that I want to exclude from the number format above. Because it is a date field and it writes to that same column so it pads my date. I do have a need to Pad that date field with mmddyyyy so I have to pad it 8 - zeros.

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I am just trying figure out a record import program from text file into access database using Microsoft.Jet.Oledb Provider 4.0 and And it seems easy but my problem is different. In the text file, records are not delimited.

Format of the text file:
Field Name & Size


Can I put delimiter programmatically while reading the text file using stream reader and later simply import the whole file in DB.

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Is there a way to open a semicolon delimited text file to a datagrid in

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Feb 15, 2008

I am trying to import tab delimited text file to access table. The below code WORKS very well for csv file. when I try the same for tab delimited text it it importing all the fields into one column of the access table and combining the header files as one column.

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Sep 28, 2009

I have a VB project that reads data from SQL as well as pulls data from other files into SQL. I need to import a text file into SQL table; there is no headers in the file and table in SQL is already exists. I found a code in Forum and slightly modified it, but I'm still missing something. I'm not sure how to specify that the text file is delimited with "|" character? Also - since there is no headers - not sure how to import it into correct columns? On the code below I'm getting "Insert" syntax error; on prior version of the code I was getting "field F1 doesn't exist".


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Jun 21, 2012

What i have going on, is i have a MySQL connector as a resource on my application, and im basically trying to connect to my MySQL server, to either a) register a new account, or b) check that the account exists and they are premium, and login, Now what i have run into problems with is: My MySQL Database Name has a _ in it which VB is not allowing for some strange reason.

The code i am using is below

Imports MySql.Data.MySqlClient

Public Class Form1

Function UpdateRecord(ByVal query As String) As Integer


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Nov 28, 2010

trying to input a text file that's tab delimited that looks something like this.

2.2 5.6
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Nov 4, 2009

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Currently I'm using a StreamReader. I've tried counting the lines and telling bcp to stop reading before the "phantom nulls", but StreamReader gets an incorrect count of lines due to the "phantom nulls".I've tried the following code to get rid of all bogus code (code borrowed off the net). But it just replaces the fields with empty spaces (I'd like the result of no line left behind).

Public Sub RemoveBlankRowsFromCVSFile2(ByVal filepath As String)
If filepath = DBNull.Value.ToString() Or filepath.Length = 0 Then Throw New ArgumentNullException("filepath")
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I've tried using SSIS, but it encounters the EOF unexpected error.

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Nov 25, 2009

I am trying to import a tab delimited file with ADO. If I convert my tabs to csv it works,but I would like to know why it does not work with tab.The Function is on the buttomhere is my test data:

- Create a Text file with Headers: Test1, Test2, Test3
and rows:


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Sep 12, 2011

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with .net 2008 exp + MySQL + Access03

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SQLiNSERT = "INSERT INTO imposections(sectors) VALUES('" & Mysql_dataReader.Item(0).ToString & "');"
Dim CMD_INSERT As New OleDb.OleDbCommand(SQLiNSERT, MDE_cnn)


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Aug 14, 2011

I developed an application in VB.Net 2010 Express by which my users can updated the data in their offices and send XML files (total 4 xml files) for that particular date - its working fine I am getting 100's of files on daily basis to my FTP servers in a common folder.

Now i want to make an application that read those XML file at a scheduled intervals and import that to MySQL database tables. Also it should keep a log of files that has been imported in order to avoid duplicate importing of files.

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I want to load an xls file to dataset, edit the data, and import them in mysql. My problem is that I can't load the file. It seems like it ignores the file completely.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd1.Click
Dim MyConn As OleDbConnection
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Jun 22, 2010

I'm trying to import data from an exel sheet to a data grid but I keep on getting the following error "The Microsoft Jet database engine could not find the object"

Here is my code

Imports System
Imports System.Data
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I'm connecting to my mysql server using ODBC in, the database is shared throughout the company because it is used in an accounting program (simply accounting), each user has their own account user/pass to login to the database. I have developped a program that uses the accounting database and combines it with other information, my problem is that at least once a day I get this error when I run my program: "(10061) ERROR [HY000] [MySQL][ODBC 3.51 Driver]Can't connect to MySQL server on"and the error persists for at least 4 hours, for some reason it starts to work again later on in the day.

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How to upload text file and microsoft office file to mysql database using open file dialog.

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Aug 13, 2010

I am trying to do something fairly simple.. allow my user to import thier data from Excel into SQL Server, where it can be used by the application.To do this, I'm using the fairly simple code that is common everywhere I look:

strFilePath = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fdlgFileOpen.FileName + ";Extended Properties=Excel 8.0"
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Now, on my development computer this code works perfectly.  The data imports, and I can go on my merry way.

On the TEST computer, this code throws the error: "ODBC -- Connection to {SQL Server} servernamesqlservername  failed."  This seems very odd to me, because I'm using exactly the same SQL Server and database to interact with the application, and all the other screens in the application work perfectly.  The test computer CAN connect to this SQL Server, but it keeps throwing this error whenever I try import data from Excel.I've tried everything I can think of - using the server's IP address instead of the server name, sending the SQL Server administrator data along with the request, taking out the Trusted_Connection=Yes... nothing works.  What is going on here? How can this code work fine on my computer, and hiccup on another?

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I want to read from textfilesin such a way that I can

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i have to create something that uses OpenFileDialog, and reads textfiles that i created it.

i did this

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End Sub

I know how to read the File name, but i want to post the texts that are in the TextFile in my textbox when i press Open/Display file.

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I am developing a desktop application that reads mails from the mailserver using pop and imap. The application is almost fnished .The problem is the some time when a command is send to retrieve a mail using GetMessage() functions the applications is going to a halt. So I tried to run the the code in debug mode and ran line by line.

What I noticed is in the while loop in GetMessage() function is
While Not tmpString.StartsWith(sPrefix)
tmpString = reader.ReadLine
msg = msg & tmpString & vbCrLf
End While

The reader reads line by line at certain point of time it got hangs. Some times it ill catch an exception and give an error. I am pasting the exception below:
"Received an unexpected EOF or 0 bytes from the transport stream".
But some times the applications will hang and go for a halt. This applications has to run 24/7. So if it hangs in the night or it will be problem. What I want is if the reader is not able to read from the stream after certain time period. The control has to be removed from the reader and the function has to return a message. I am new to this the network level applications and I am running shot of time.

Public Sub connect()
Dim objTCP As New TcpClient
Dim sslstream As Net.Security.SslStream
Dim reader As StreamReader = Nothing
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May 27, 2012

I have an assignment due tomorrow, and I thought I had it all figured out but there is one question I don't know how to program. The assignment consists of a form with textboxes in which the user types info about a book (author, title, genre, etc.), which he can save to a textfile by clicking the save button. (At the moment it's not saving it to a textfile but just a 'file', which can be opened with notepad but is of no specific datatype, not sure how I do that, but is less important). There is also a button with which the user can display information from a different, earlier created textfile.[code]

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Aug 2, 2010

So, I have this code that grabs a bunch of data from the database, and performs a bunch of calculations on that data. However, this is not what is causing the halt. The halt is coming in when I take all that "final" data that has been prepared, and go to write that into a text file.

Each line in the text file is being created from data that has had calculations performed on it. Each line "corresponds" to a record from the database. A user will have to perform this file export usually on about 30-40 thousand records at a time. Now, even though I am using a StringBuilder, this still halts because of the pure mass amount of records.

What I do currently in the code is create one StringBuilder, append all the data (after calcs) to it, convert it to a String, add it to a List(Of String) to be returned from the Function, and then clear the StringBuilder, and do the same for the next row, and I do this until each row has been created and appended, converted, and then inserted into the List.

Then, another class receives this List(Of String) and takes each String and eventually appends it to a file.

Does anyone have an idea of how to improve this code and make it so it doesn't halt the server every time? The reason it wasn't found out until now is because when I tested it locally I was testing it on only 1-50 records at a time.


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