Retrieve Entire Line From Txt File With A String?
May 11, 2010
I'm writing a small tool that requires me to take a string as input, search it in a txt file & return the whole line on which the string occurs,..for eg. let's say my text file has line # 5 as : "TEMP-This is a test line" now if i give "TEMP" or "test" as input is want my code to chk evry line in the text file & return the entire line where the string is found...
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim FileName, FindStr As String
Dim objReader As New StreamReader("c:MyFile.txt")
[code]....
View 2 Replies
ADVERTISEMENT
Jun 10, 2011
i have a form with textboxes such as First name, surname, phone number in and each row has an auto number assigned to it. that auto number is the customers reference number. basically i want to be able to enter a reference number into a text box and when a button is clicked i want to extract all the name and phone number from the database and put them into the relevant text boxes. how would i go about doing this?
View 7 Replies
Apr 1, 2011
I'm having trouble with reading a .txt file line by line, converting it into a string, then putting it into a listbox. When I execute I get an error saying "IndexOutOfRangeException was unhandled" Here is my
[Code]...
View 5 Replies
Aug 30, 2010
I like search a file TXT with this contains:
Name "Paul"
Age "11"
City "Chicago"
my question is: Its possible get a string "Name" and give me the value "Paul"? I have this function for get strings:
[code]...
View 2 Replies
Dec 26, 2009
I 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 Replies
Mar 13, 2007
how can i save 2 textboxes(string) into 1 file? and when open the file, the string goes to definite texboxes...
[Code]...
View 7 Replies
Sep 12, 2009
I have resized the form by using the following code. what i want to do is that i want to fit the entire screen horizontally...so that the horizontal scroll bar doesent appear.....
Private Sub Resize_Form()
Dim cControl As Control
Dim i_i As Integer[code]..........
Which value do i change in the code that the screen squeezes horizontally ...? There are only two controls on the right side when we scroll....i think if the resolution is done correctly then it will fit in the screen.....but i dont know what chages should be made in the code.
View 5 Replies
Feb 3, 2010
how can i retrieve a line from a textbox,and compare it with the line in another textbox..
View 4 Replies
Feb 21, 2012
I wanted to select the entire line/row in the RichTextBox, where currently the cursor is. How should I do it ?The code should be paste in command button 'cmdSelect'
View 1 Replies
May 15, 2009
I have a connection string in my database which I read throughout my VB .Net application. I have another string which is NOT a connection string though. It instead has information about a domain on LDAP. So LDAP string just needs to be stored in the web.config as a string, and also to be retrieved as a string.
[Code]...
View 3 Replies
Apr 11, 2011
I have a listbox where each line contains a short 3-4 character model number followed by a tab and then the product name the model number corresponds to. I also have a textbox which I am using to search the listbox.
The code I am using so far works somewhat, just not exactly how I would like. If I enter search text it will highlight the results in the listbox but only for the first characters, is there anyway to search the text of an entire line (index) of a listbox?
Right now I am using the following:
Private Sub txtSearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
ListBox.SelectedIndex = ListBox.FindString(txtSearch.Text)
End Sub
View 2 Replies
Mar 19, 2011
I am after some simple code to retrieve a txt file of a server (http) and store it in a string.
I have had a look around, but non luck.
I am using VB2010 on Windows 7
View 3 Replies
Feb 23, 2012
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
[code]....
View 4 Replies
Dec 25, 2010
If i have a line in a txt document "text.txt".Now what i want to do is open the file and read the contents.
When it find this "search.selectedEngine" term then it should delete that particular line and replace it with another string ("REPLACED STRING").
View 1 Replies
Mar 31, 2009
im using an array to retreive a string from a line in a txt file this is great the first time round but when i try to use the process again to update the textbox is doesnt work do i have to purge the array or some thing? im using the same script just mapping back to it so nothings changed ive tried using a second array with the same commands but different declared names and that doesnt work either Dim lines As String() = IO.File.ReadAllLines("C:myfile.txt")
Dim line2 As String = lines(2) textbox1.Text = line2
View 5 Replies
Jul 17, 2009
I thought you could use a structure as a container. I have line_1 with a line of data read in from a file. I only want to Look in position 1 of the line and position 8 for 9 and position 31 for 11. If I create a line_2 with the parts broken out for pieces that I want to look at then I could use a with statement right?
[Code]...
View 3 Replies
Apr 3, 2011
I use the following command to save my textbox strings to the file:
Sub SaveToolStripMenuItemClick(sender As Object, e As EventArgs)
FileOpen(1,"test.TXT", OpenMode.Output) ' Open file for output.
WriteLine(1, textBox_name.Text) ' Print text to file.
WriteLine(1, textBox_middlename.Text)
[Code].....
View 4 Replies
May 30, 2010
I've been trying to fix this problem for days, but I haven't been able to successfully apply any of the code that I've found to my project the way it is right now. Maybe I'll need to change the way it reads the file altogether.
Anyway, I'm trying to read through a text file line by line, reading each line into its own string.
View 15 Replies
Jul 7, 2009
The code below reads each line from a file and if the conditions become true it adds the contents of the file from the particular line and after into a string collection (i.e. the All contents). This is what at least what the code should do as the current one only adds the line that it encounters into the string collection.
View 5 Replies
Nov 6, 2008
I am trying to replace an entire word in a string.
This is my example string:
"Hello test this is testing".
I want to replace the word "test" with "abc". I want the output to be:
"Hello abc this is testing".
Whenever I try and use the Replace() function I get:
"Hello abc this is abcing"
How I can do this with Replace or RegEx
View 11 Replies
Jul 9, 2009
Deleting a line from a text file. This is for an ASP.net Webpage. I will have a file called Sources.txt. Example data of this file looks like this[cde]...
View 8 Replies
Aug 25, 2011
i want to get the line number of a text file that contains a particular string data.
1. using the string data like str="book"
2. find if the string is part of the file
3. get the line numbers of where it occurs.
eg
filename=sample.txt
sample.txt contains
dance
book
[Code]...
View 2 Replies
Aug 30, 2010
I am trying to convert each line in a file into a byte array. The line in the file is similar to this:
:100000000247A1E59620E7FBE4F596900780E0FF24
I have code and have tried several things but they don't seem to be working out.
Dim fileline As String = ""
Dim linebytes() As Byte = Nothing
Dim idx As Integer
' Make sure the file is open for transferring the data to the board.
If Not (SoftwareUpdateFilestream Is Nothing) Then
[Code] .....
View 8 Replies
May 3, 2011
I would like to know how to read from text file that have a line with string A and ignore lines with string B.
View 7 Replies
Dec 21, 2011
I have a script that attempts to load XML text from a URL and I am having difficulty figuring out how to check to see if it is valid, normalized XML. I don't have a schema as there are several variables which could change the XML format, I just want to check to make sure all of the opening tags are closed properly so I can verify that the entire string loaded properly.
Here is what I have right now.
Dim objResponse As HttpWebResponse
Dim objRequest As HttpWebRequest
Dim strXml As String
Dim newMembers As New DataSet
Dim xmlReader As StringReader
[Code] .....
I would like to add something here to validate strXML
' create a dataset from the XML file pulled down from the remote server
newMembers = New DataSet()
xmlReader = New System.IO.StringReader(strXml)
newMembers.ReadXml(xmlReader)
View 3 Replies
Jan 4, 2011
We're converting a Classic ASP site to an ASP.NET site. One function was to upload a 'template' of data in CSV format for importing into the database. There were several different record types in there (the first field always indentifies the type of data).The task was to get the CSV into a DataTable so it could be validated (new project is to have MUCH better validation rules)
The code seemed pretty straightforward - watered down (taking out comments, Try/Catch, etc) it is as follows:
Dim da As New System.Data.OleDb.OleDbDataAdapter
Dim cn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDirectory & ";" & "Extended Properties=""Text;HDR=No;FMT=Delimited;""")
[code]....
The DataTable (dtData) is populated, but only starting with the second line of the CSV file DESPITE the fact that "HDR=No" is in the connection string.
View 1 Replies
Jun 29, 2010
I have a text file (CSV) approx 100k lines (8Mb). I want to search the entire file for a particular string eg, "apple" and for all lines containing the string to be printed in a text box. have successfully done this using streamReader to parse the CSV and check each element against the search word eg. apple. This has proven to be very very slow and I have read that the "ReadAllLines" method is much faster.
View 8 Replies
Jun 12, 2011
ine from a text file. This is for an ASP.net Webpage. I will have a file called ources.txt. Example data of this file looks like this:
View 3 Replies
Oct 14, 2011
what i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.
sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.
full code here
-------------
Dim objReader As New System.IO.StreamReader(sOpenFile.Text)
Dim sTextLine As New ArrayList()
Dim sText As String = ""
Dim i As Integer = 0
[code]....
View 3 Replies
Nov 18, 2010
I would like to read an HTML file, search each line to see if it starts with </head>. Then add the centering code after it. That line at destination file should read:
</head><table border="0" cellpadding="0" cellspacing="2" width="760"align="center"><tr><td>
After this I don't care to search for anything. Just read from source and write to destination. I know there are programs out there to find/replace text in series of files but I am not allowed to use external programs.
View 16 Replies
