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"
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]...
I am not exactly sure how to say this, but what I want to do is to write a series of strings converted to their hex notation to a binary file. Here is what I have[code]....
View 8 RepliesHow do I read a raw byte array from any file...
Dim bytes() as Byte
..and then write that byte array back into a new file?
I need it as a byte array to do some processing in between.
I'm currently using:
To read
Dim fInfo As New FileInfo(dataPath)
Dim numBytes As Long = fInfo.Length
Dim fsAs New FileStream(dataPath, FileMode.Open, FileAccess.Read)
[Code]....
Im trying to read and write to a file in binary.to give an example of what im trying to do i have posted a picture below.the string is 12 bytes long and each four bytes has a float.the one in red is set at 1 and green and blue are 0 giving the read as the overall color. i have been trying to get this well i tried once and gave up but its been awhile.i have this so far but it doesnt work. this is kinda what i got to read the bytes out but its messed for i have been trying everything i could think of
Code:
Dim s1 As FileStream Dim br As BinaryReader s1 = New FileStream(Application.StartupPath & "/files/test1.bin", FileMode.Open, FileAccess.Read) br = New BinaryReader(s1) Dim bytes(12)
[CODE]...
I have this to write the color back from a color dialog
Code:If dlgColor.ShowDialog() = DialogResult.OK Then
PictureBox1.BackColor = dlgColor.Color()
[CODE]...
I need to write an hexadecimal value to a text file but as a binary, how do i do that
View 17 RepliesProgram to convert binary pdf file to tiff file in VB.NET..?? We can use third party tools also..???
View 1 RepliesIs it possible to write a binary file directly to the clipboard in .NET? (Rather than write it to a file and then copy it?) the file is not an executable but will be pasted to the desktopfolder for example. [Code]
View 1 RepliesWrite binary file in sequence with Listview.I'm loading data from a *. bin file in a listview to modify.Now I want to write listview data in the file.The start offset is 1036.The sequence of each data block is 228 bytes.The number of times to repeat the sequence is 8011.There is more information ... but I put these 3 sample.In the first data block to these lengths are Name Offset 1036 +50 (name space long is 22 bytes)Age Offset 1036 +60
Nationality Offset 1036 + 62
I suppose that before writing the data in the file would have to convert the data item and subitems in hex or byte.
I'm amazed at this situation. In QBasic, you could just easily GET and PUT whatever you wanted at the exact position in the file that you wanted. Now in Visual Basic 2008 I'm just completely stumped.
I can't use FilePut or FilePutObject because of a twisted issue. It adds a couple of bytes to describe the length of the data being written: what's the point of BINARY read/write if it won't allow you to write EXACTLY what you want and nothing less or more? There's a way to turn off this issue, and that's by setting the parameter StringisFixedLength to TRUE, but that's where the twisted part comes in. You can't do that. As far as I can tell you have to redefine the function using SUB, for example:
[Code]...
My.Computer.FileSystem.WriteAllBytes. To my amazed surprise, this function doesn't even bother to include the possibility that I might want to put the data in a specific position within the file! I can't believe this. You can either specify to APPEND at the end or not, in the latter case apparently resulting in a write to the beginning of the file. No option at all to specify where in the file you want to put the data. I can't believe this.
How do you write to a SPECIFIC position in a binary file in VB 2008, and do it without the program deciding to add a few "informative" bytes to your data before it's written (totally undermining the whole point of binary files)?
I am using BinaryWriter class to write a binary file to disk. When I invoke the Write method, passing an unsigned short value, it writes it in little-endian format. For example:
bw.Write(0xA000);
writes the value in the binary file as 0x00 0xA0. Is there a way to make BInaryWriter use Big Endian? If not, is it possible to create a new class, inheriting BinaryWriter and overload the Write function to make it write big endian?
I'm trying to write a text strings into a binary file and then call it back from another sub.[code]...
View 6 RepliesI am trying to write a simple application that monitors the COM port and writes the incoming binary data to a file. So, I gathered a File class is provided, but looking at its methods list in the Help page, I see no method for writing individual bytes (and the Write methods seem to close the file after writing).
How can I write a byte array into a file, keep it open and repeat this as necessary?
I got a problem when i try to get binary file from database and put it in hard drive
View 8 Repliesi 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.
View 3 RepliesI'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?
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"
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.
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)
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?
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]....
I'm trying to read the binary data from a binary file with the code below but the it's return the value in the byte array. How can i read the binary data from the binary file and then convert the data into string?This is how i create the binary file.
Dim fs As New FileStream(Application.StartupPath & "Agency.dat", FileMode.OpenOrCreate)
Dim bf As New BinaryFormatter()
Call bf.Serialize(fs, GAgency)[code]....
I have seen writing to binary, but the question is how do I change from where it starts at in the file, supposively I want to start at byte 3 instead of the end or begining. Also is it 0 based? where zero is the first position, and how do I over write the data at the part I am at in position 3?[code]....
View 7 RepliesI've never worked with Binary values, so I can't get this to work. I don't know how to write it, but when I open the registry, I want the Data to look exactly like this [code]...
View 2 RepliesI'm trying to write a value of to a REG_Binary key. the only viable solution i see online is the following: Dim a() As Byte = New Byte() However the value of a0 is causing a problem. It won't seem to let this value be used. so how do i get this to work.
View 2 RepliesHow can i convert hex data to binary data and write it to registry anyone ?
View 5 RepliesI have this code which works well:
Public Function LoadBinaryFile(strFilename As String) As Byte()
Using fsSource As FileStream = New FileStream(strFilename, FileMode.Open, FileAccess.Read)
' Read the source file into a byte array.
[code].....
Here is my code:
Public Function ReadBinaryFileLarge(strFilename As String) As Byte()
Dim position As Integer = 0
Dim bufferSize As Integer = 4096
[Code].....
Is this the correct way to go about this problem? If not, how should I attack it?
i tried saving the string 1995030 to file as byte as a hex value.Used the following lines to do this by hand:
Dim fs As New FileStream("test.txt", FileMode.Open, FileAccess.ReadWrite)
fs.WriteByte(&H2D))
fs.WriteByte(&HB3)
fs.WriteByte(&H56)
This works as expected and everything is fine until this point.Now i tried to solve this problem by code.Tried the following:fs.writebyte(&H(str))Str contains the actual hex value to write.
I have a binary converter I am attempting to build and want to read and convert the InputTextBox(alphabetical characters) letter by letter however all I have so far is one letter at a time
Image here is the code I have so far:
Code:
Public Class ConverterForm
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click
[Code]....