I have a binary file with lines like that
2011021007001 �00000009177855400213156412300210000000000010000EC
I don't know how I can read the first 13 characters in a variable like in C ( with char[13] ). My idea is to read the first 13 characters, skip the next 5 characters for change with 5 '-', and next read the rest of the line. I need to read as Binary because it have some special characters.
I am trying to make a program in Visual Basic 2010 that should do the following:
-Open file as binary
-Start with position 57 and read the following characters until a 0 is found, print the whole name
Inside the binary file, all the files' names end with 0 (which should not be printed), example:
B000000.dat0
eft.dat0
G000000000.b70
For the above examples, the names that should be printed are B000000.dat, eft.dat, G000000000.b7 respectively. The code I wrote is below. The problem is that i am not sure how to read the name until the 0 is found since the names are variable in length and so are the extensions(dat, b7). Also some names have 0 in them which makes things difficult.
Using gs As New FileStream(fileName, FileMode.Open)
gs.Position = 57
Using gr As New BinaryReader(gs)
For x As Int16 = 57 To 70
Dim textvar(x) As String
textvar(x) = gr.ReadChar
text3 = textvar(x) & (gr.ReadChar)
Next
End Using
End Using
I have a client and server: I cant get the server to extract the byte sent to it.
Server:
Imports System.Net.Sockets
Imports System.Threading
Imports System.IO
Imports System.Net
[Code]...
i tried out this [code]i can create and write in the .bin file but how to read it then?
View 20 RepliesI have existent binary files with this structure[code]...
View 13 RepliesI have a problem to read the binary from HttpWebResponse. The problem occur when the data is less than the buffer i predifine. It will hang in a long time when stream.Read(buffer, 0, buffer.Length) in ReadFully function.
Here is the sample code
Public Sub GetData()
Dim Buffer(1024) As Byte
Dim sHttpData As String
[Code].....
I need make an application that gets binary code from a file, such as a .exe, (in 8-bit form) and display the charectors in a RichTextBox .BUT! The catch is I need it to do the process REALLY fast, like in a 5th 0.5 of a second. I have a method but it takes way to like, sometimes 5 seconds for 1 file, which isn't what I want This is the code I have:[CODE]......
View 9 RepliesWay to Read Binary Data.I have the following [code]...
View 4 Repliesreading a 16bit binary file (tiff image). Since the file is in 16bit, pixels of the file stores values ranging from 1200 to 4500. I want to retrieve those values. I used ReadUInt16 since the file has a 2byte data type but keep getting EnfofStreamException Unhandled error.
Dim f1 As New System.IO.FileInfo(TextBox2.Text)
fLen1 = f1.Length
Dim snglRead As Single
Dim i As Integer
[code]....
To read a record in a binary file in VB^ I would define a type with all the fields specifying strings as STRING * whatever the length of the field was.
For example:
Type Record
Field1 as string *15
Field2 to as string * 20
Field3 as String * 10
field4 as byte(10)
End Type
Dim filerecord as record
I would the open my binary fiel and do a Get#1,, filerecord
The record would be read and all the fielsd would be in place.
Now with the new Structure we cant dimension an array in the Structure And wjhen declaring strings we can't specify the length.
I tried to create structire and use a stream binary reader. and just read afixed number of bytes into the type, The program says it canvert bytes to my fiels.
So how do I do this. Or has Microsoft in their infinite wisdom left no way to do this.
How 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]....
How can I read arrays from Binary Files?
View 9 RepliesI have a serious problem reading that stuff, it seems I can't get it right.The registry key I want to retrieve looks like this:
And this is the code i used:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim readValue = My.Computer.Registry.GetValue _[code].....
The problems is that it returns something like: "V???????=dQ???!u?1?" What the ____ is that anyway? So in reality it should be like "c3gm322dvf" or something like that.
I'm a beginner programmer, but this may not be a beginner program question. I would like to write a program in small basic or visual basic that reads data from a binary file. The data are formatted in hex and look like this:
[Code]...
I 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].....
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]...
We have a SQL server database that had ID fields that used to be defined as integer.The new version of the database has the ID fields defined as BINARY(16).The VB project I am ugrading reads these tables and spits out Crystal Reports. The problem I am having is this portion of
[Code]...
I have a jpeg file in my C drive from my vb.net application I want to binary read it and store it in SQL server.
View 1 RepliesSome binary files have application variables at the end if you open it with a text editor you can see these variables. Now when I read these files into the processor memory the program does not work properly, however if I read a file without this it works fine. So how can I read a byte[] array to EOF so that when I pass that byte array into win32 api create-process it will create the process without corrupting the program?
View 3 RepliesI am using BinaryReader class to read binary file.But I am facing problem while reading number of bytes from it.I have written code to read only 2 bytes from it,it works well on my machine and read only 2 bytes,but when I deployed that code on server machine it read 4 bytes from file.Whats wrong in the code?Is it due to processor i.e.. 32 bit processor/64 bit processor.
View 2 RepliesUsing fs As New FileStream("C: estsomefilename.ext", FileMode.Open)Using rdr As New BinaryReader(fs) fs.Seek(225, SeekOrigin.Begin)Dim b() As Byte = rdr.ReadBytes(32)Dim s As String = Encoding.UTF8.GetString(b)
End Using
End Using
End Sub
i trying to seek 78 from beginning and get the int32 in binary mode..
View 1 RepliesHere 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 want to save some data to a binary file, and read it later, as in several strings of data.
My objective:
To save the following things...
1. 3 different strings of data, and be able to easily read them later.
I have an image that has dimension of (100,100). I am using FileStream class. When I run the code I get EndOfStreamException error at line 44. I have pasted the for loop section of the code below.
For x = 0 To 99
For y = 0 To 99
byteRead1(x, y) = br1.ReadByte ' line 44 (exception thrown here)
[code].....
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.
I am trying to read the data from a device on a serial port. I connect just fine and can receive data fine in text mode but not in binary mode. I am using VB.NET express. I am at the point in my code where I know that the device is sending 1056 binary bytes of data. How do I go about storing this is a binary array? After I have the array stored (which I dont yet) I need to go through the array and convert the binary to integers. They are 2byte integers in the format: 8bit MSB|8 bit LSB.
View 5 RepliesI used to read a binary file by formatting a record type and then using the Get command to get the data. What is the equivalent in VB.net?
Code:
'In Module.bas
Public Type recordtype
dist As Single
[Code].....
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 need to create a collection of millions of objects, each object has 3 double and one integer fields.If I remember (after more than 20 years without using C) in C you would allocate enough memory using a struct and an array, and read all the file content in one shot.In VB I created a class with the 4 members, and this constructor:
Sub New(BR As IO.BinaryReader)
X = BR.ReadDouble
Y = BR.ReadDouble
[code]....