how..? Read last 100 byte from file ...?

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hi, everyone
my ques Is..

How to read last 100 bytes of hex from file using vb.net 2012
and then insert it into the textbox ..
so far i have given below given code but did'nt get output to textbox

Dim fs as new filestream(filepath,filemode.opem,fileaccess.readwrite)
fs.seek(100,seekorigin.end)
dim bytearray(100) as byte
dim numbytesread as integer=fs.read(bytearray,0,100)
textbox1.text=fs.tostring 


i want last 100 bytes to textbox
thnxxxs in advance

Posted 28-May-15 1:07am

Member 10521418

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CPallini · Answer 1 · 2015-05-28T01:27:00

Solution 1

You should try something similar to:

VB

Dim fs As New FileStream(filepath, FileMode.Open, FileAccess.Read)
fs.Seek(-100, SeekOrigin.End)
Dim bytearray(100) As Byte
Dim numbytesread As Integer = fs.Read(bytearray, 0, 100)

textbox1.text = System.Text.Encoding.ASCII.GetString(bytearray)

Posted 28-May-15 1:27am

CPallini

Comments

Member 10521418 28-May-15 9:11am

sry but it is ascii but idont want this i want hexdump of the file last 100 hex bytes...

Sergey Alexandrovich Kryukov 28-May-15 11:21am

All right, just ignore the last line.
You asked about 100 bytes, you got your 100 bytes, then do whatever you want with them.
Cannot do the hex dump? Too bad. Then ask a separate question about hex dump. And accept formally this answer; it is complete.
—SA

Member 10521418 28-May-15 11:54am

thxxxs but i have completed by my own .... but thanks guys for rply ....

Sergey Alexandrovich Kryukov 28-May-15 11:59am

It's not "but". Everything to be "completed" is beyond the scope of your question. Your question is answered in full, so I suggest you accept it formally.
—SA

Member 10521418 28-May-15 12:25pm

hmmmmm

Sergey Alexandrovich Kryukov 28-May-15 11:20am

Sure, a 5.
—SA

CPallini 28-May-15 14:00pm

Thank you very much, Sergey.