Finding And Replacing Data In A Binary String (or File)?
Feb 9, 2010
I have a binary file. If I look at it with a hex editor, the first values are:208, 207, 17, 224, 161, 177, 26, 225, 0, 0, 0, ... etc.It has a length of 330240 bytes I have tried to open it and read it into a string so I can manipulate it and write it back. No matter what I use, I either don't get the correct number of bytes or the values in the string are incorrect. The most common error results in the first values being: 63, 63, 17, 63, 63, 26, 0, 0, 0 .... etc.It is interesting that it appears that any value > 63 becomes 63.
I get the 2nd values by a simple loop:
For lnx = 0 To 99
Debug.Write(Asc(line.Substring(lnx, 1)))
Next
I have tried a whole number of ways to read in the file, including filestream, My.Computer.FileSystem.ReadAllText, File.io.readAllLines, etc.All either give me a string length of about 324000 (not sure why) or, if they do, don't have the correct values. Yes, I have tried various encoding options.
I need to find a string (sort of like: "D" & Chr(0) + "L" & Chr(0) + "S" & Chr(0)... ) so I can then replace that portion of the string with a new value, then write out the file.I use the ".indexOf" to find the data in the string.Why can't I load the file into a string? Or, do you know of an easy way to find some text (similar to above) in a file and then replace the next x number of bytes with a new value and close the file?
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Mar 28, 2012
I've got an issue with a program I am writing. The specific issue is replacing characters in a parent string by finding, and matching, specific characters within it that are parsed from an external xml file. It's for a chat-like client.Here's the 2 classes I am using to pull the emote strings, titles, and id from external XML:
Imports System.Text.RegularExpressions
Imports System.Xml.Serialization
Public Class emote
[code].....
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Aug 8, 2010
I am working on a program and for one of my features, I need to replace all spaces in a program with - (dashes.) Is there a way in which I can do this?
Example:
Start String = "The rain in Spain falls mainly in the plain."
End String = "The-rain-in-Spain-falls-mainly-in-the-plain."
[code].....
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May 8, 2011
I need to basically search for either a string such as "I-AM-RIGHT-OVER-HERE" or search for a sequence of bytes and return the offset of where that string or byte sequence is at.
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Feb 23, 2011
I have been googling this and have not come along a working solution for an entire day. I don't know anything about binary data types (as I've never knowingly used them) and I'm trying to write a binary value that I see in the registry, to the registry. Now, all I see is the following [shown below]... and if I try to pass that as a string to the RegSetValueEx in the WinAPI and of course it errors out...
I do not know what 'numbers' I need to pass into the lpData As Any, argument of RegSetValueEx (i tried a bit array) in order for it to come out as the following [shown below] in the regedit. I really have no idea, and my tests to place random numbers in the bit array just produce corresponding random "figures" as visible in regedit that I do not understand how to 'tie' them together logically. here is the culprit!
[Code]...
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Oct 21, 2009
i have 2 groups of text in my text file
Bottom
11.0 28 Red (2 13.10 04.0) [1 16.71 33.3] 130611 2948 229111 28275
6.5 28 Blue (2 03.00 03.0) [1 05.36 58.3] 132111 -67725 191611 -51225
2.0 28 Blue (1 05.36 45.3) [1 05.36 58.3] 211111 51225 210454 34691
[Code].....
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Jul 14, 2009
I am using the .Replace function of a string. My string is a module I have added for a resource which looks like this: My.Computer.Network.DownloadFile("This String Will Go Away/details.txt", "details.txt") And then in my application I have:
[Code]...
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Jan 18, 2010
I currently have a very long column (5,000+) of which a lot of cells start with a range of zeros which I want to get rid of (the zero's that is). After importing the data from a txt file, I have a loop going through each row in turn getting data from different cells. So I could amend when teh data is being imported or during the loop reading the data.
[Code]...
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Jan 27, 2009
I've got a string which could or could not contain the substring "/announce". I would like to replace this part of the string with "/scrape" if its found...so far nothing tricky. But heres the thing: I only want to replace it if the '/' in it is the last occurring in the string. Heres what I mean:
Heres a scenario where I want the replace to happen:
MyStringWithRandomText/announce?x=19
would become:
MyStringWithRandomText/scrape?x=19
And heres another scenario where the '/' in announce is not the last '/' occuring in the string, so I dont want to replace it:
MyStringWithRandomText/announce/foo?x=19
I hope that made sense. Not sure if there is a way to handle this by only using RegEx
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Aug 12, 2011
What I basically have is a small game which I want to count wins/loss/ties. I have no problem with the game aspect but need to know how I can replace a string in a csv file. IE: If Jim wins the game, his 5 needs to be turned to a 6. After googling quite a while I came across the replace() function, but it doesn't actually rewrite it back to the text file
Contents of users.txt:
Jim,1.jpg,5,1,0
Will,2.jpg,6,7,0
Tom,3.jpg,5,5,0
Snippet of
[code]....
The issue I have, is if I try to use any sort of IO function after this (WriteAllLines, streamwriter, etc) - I get a process is being used and can't touch the file (because its being read).Must I somehow create a new file with a copy of everything including the replaced string?
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Aug 21, 2009
when i copy code from vb.net code window, and paste it in my richtextbox, the color synthax is as it displays in my vb.net code window.. this i want to keep when finding and replacing words. i have the following code to find and replace,
RichTextBox1.Text = RichTextBox1.Text.Replace("Private Sub", "<font color=blue>Private Sub</font>")
but the color syntax of the richtextbox code is lost, looks like a textbox's text.. how do i replace the words and keep the synthax coloring?
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Jan 27, 2012
I have problem when i inserted data. the error show String or binary data would be truncated. What is meaning of that??
This my code:
Try
SQLCONNECTIONS.connect()
Dim sqlcmd As New SqlCommand
[Code].....
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Jan 11, 2011
i need to read binary file and in this file found the string and replace it with other one and save the file afterwords. I found many example to read binary, but to find and replace is for me mistery.
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Apr 5, 2012
I am trying to insert some data from my windows application to sqlserver 2008 R2 Express.But i am seeing this error..please see my code below:i am not able to find what is error
creditfunction(invoice, datetoday, totalamount, duedate.ToShortDateString, paidamount)
Public Sub creditfunction(ByVal invoiceno1 As Integer, ByVal datetoday1 As Date, ByVal totalamount1 As Single, ByVal duedate1 As Date, ByVal paidamount1 As Single)
[Code]...
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Jan 2, 2012
String or binary data would be truncated. The statement has been terminatedAs I've looked back on my backend or code. It looks like there's a conflict adding a TWO LABEL DATA in one column because I would like to join the (Year)-(StudentNumber)Here's the code of my INSERT INTO Statement
INSERT INTO
[Student_Information] (StudentID, LastName, FirstName, MiddleName, Gender,
ContactNumber, Citizenship, Religion, Birthday, Address)
[code].....
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Mar 8, 2012
This gets data from Excel and puts it into a table. The first 2 rows of data are placed into the table. All the fields columns are the same type and nothing is larger than it should be name is varchar(30) team is varchar(3) pos is varchar(2) rest are int or double. I place an i in front of integers s in front of string and so on. The 3rd row crashes with the following message at Command.ExecuteNonQuery() String or binary data would be truncated. The statement has been terminated.
Option Strict Off
Imports System.Data.OleDb
Imports System.Data.SqlClient
Public Class Form1
[Code] .....
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Jul 4, 2011
Protected Sub cmdOK_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdOK.Click
Dim medID, medName, comment As String
[code].....
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Dec 2, 2011
I want to write a string into a binary file.The length of the string is 22 position 1036
Write name in that chain, the length of the name varies but is always between a length of 22.
As I can fill the remaining length of the string with blank spaces?
The empty spaces in hex is "00"
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Apr 16, 2009
Am using Vb.NET 2008 and SQL 2008. I have a problem, when the execution reaches daAdapter.Update(dtTable) then I receive this error ""String or binary data would be truncated.The statement has been terminated"" Then the record fails to update.Below is the complete code. Thanx in advance.
Dim SQLCon As SqlConnection
Dim SqlQuery, SqlQuery1 As String
Dim daAdapter As SqlDataAdapter
[code]....
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Feb 27, 2012
iam trying to insert some values to SQLServer 2005 Database.The following error displaying.I changed the corresponding column size,still the error persists.how can i sove this error-:'String or binary data would be truncated.The statement has been terminated'
Me.Personal_detailsdbTableAdapter.Insert(Me.FirstnameTextBox.Text, Me.LastnameTextBox.Text, _
Me.PassportnoTextBox.Text, Me.PlaceofbirthTextBox.Text, _
Me.SexTextBox.Text, Me.DobDateTimePicker.Value.ToString)
This is the SQL Database Table Design
firstnamenvarchar(50)Checked
lastnamevarchar(20)Checked
passportnonvarchar(50)Unchecked(Primary Key)
[code]....
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Mar 16, 2012
For the life of me I cannot find the solution to this error. All field lengths match the length of the SQL Server data field. Here is the insert code I am using... the same to the code that is used elsewhere in the program.SQL Server Express 2008 R2 and VB 2010 SP1.
Dim blnInputError As Boolean = False
Dim blnPrimaryKeyError As Boolean = False
Dim blnIsError As Boolean = False[code].........
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Jan 20, 2011
I'm wounder if it's possible to save both string and images to the same binary file? I know that you can save them independently with one file for strings and one for images. But i would like to save both in to the same file.
If it's not possible with binary files, when what's my options?
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Oct 26, 2010
I want to search for a String Pattern in a Binary File (Binary File is not 100% plain text). Here is the pattern:
"**_*_*_*"
or
"111_11_11_112"
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Sep 18, 2011
I want to read a string into a binary file. This string is repeated every certain length ... example:
Start Offset: 694
End Offset: 2248591
Long of string: 25
Sequence Length: 110
I want to read the file and add the strings in a listbox.
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Jan 23, 2009
In a text file I have users add a folder using the folderbrowserdialog users then push add which appends the text with lets say they selected downloads
Downloadsname=Downloads
downloadspath=C:documents and settingsJamesDesktop
how can I make it so that when they push a button it seraches for downloadsname then after the = is the text to use as a string and do the same with downloadspath
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Jul 9, 2009
I have a binary image (Black/White) that showing several white spots (3 to 4 spots). Is there any method to identify the position (coordinate) for every white spot.
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Oct 13, 2011
well in a database is saved a binary code (this is a *.jar) i need to download this code (with a select query) and Rebuild this file
What are the setps for convert since a String to a File?
someone told me i need convert it to array byte, but i dont know how to convert a String to a array byte... what are the best steps?
this code return me a table
Public Function ConseguirCatalogo() As DataTable
Return conn.RegresarTabla("select archivo from catalogo where id= (select id from periodos where actual=1)")
End Function
[Code]....
now what are the next setp for convert it finally to a file? ( it is a *.jar)
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Jan 24, 2012
How could i read a string into a binary file Encoding.UTF8.(the string has a length of 25 bytes)
Using fs As New FileStream (OpenFileDialog1.FileName, FileMode.Open)
fs.Position = 2096
Using br As New BinaryReader (fs)
For x As Int16 = 2 To 25
[code]....
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Jul 13, 2010
i have an array contains a-z.Then i have a textbox and when click on the button, it will replace the text inside the textbox to the index number of the array.Example, from "abc" will become "0 1 2" The code below do the job.how to do so that i can replace the text inside the textbox from "0 1 2" back to "abc" based on the array?
Dim txtKey As String = readKeyTxt.Text
readKeyTxt.Text = ""
For Each b As String In txtKey[code].....
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Jul 24, 2009
Well I basically know how to read a text file, replace text then write to one. how to append text after a specified string (ie, insert text at a specified line, removing the text after a string in a line and changing it without altering other lines, etc). Can someone please tell me how I would go about adding a string after a certain string in a text file? For example:
I Have:
test
example
hello
[Code]....
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