• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 535
  • Last Modified:

Why String.length equals ZERO but the content equals ""

Hi,

I have a byte array and i get a string (unicode format)

the result is strange sometimes

the string length equals ZERO and the content of this string is empty...

can you explain me?

Regards
0
Dnx_7
Asked:
Dnx_7
  • 4
  • 4
1 Solution
 
gregoryyoungCommented:
What is your data in the byte array? Is there a termination character in it?

Can you put up what is in your byte array and your code for changing it to a string?

Cheers,

Greg
0
 
Dnx_7Author Commented:
surely a termination character

i receive it from a socket (tcp listener) and it is a string


                    ReDim bytes(128) '

                    mySocket.Receive(bytes, bytes.Length, SocketFlags.None)

                    eventReceived = System.Text.Encoding.Unicode.GetString(bytes)

i also have the problem to redim the byte array to exactly what i want to receive from the network...

Regards
0
 
Jaime OlivaresCommented:
You have to trim the leading null characters:

Dim nulls As Char() = chr(0)
eventReceived = System.Text.Encoding.Unicode.GetString(bytes).TrimEnd(nulls)

0
Free recovery tool for Microsoft Active Directory

Veeam Explorer for Microsoft Active Directory provides fast and reliable object-level recovery for Active Directory from a single-pass, agentless backup or storage snapshot — without the need to restore an entire virtual machine or use third-party tools.

 
Jaime OlivaresCommented:
Sorry, I meant:
You have to trim the trailing null characters
0
 
Dnx_7Author Commented:
eventReceived = System.Text.Encoding.Unicode.GetString(bytes).TrimEnd(Convert.ToChar(10))

still have the same result... :(

the string is "bitlink 7" and the length equal 65
0
 
Jaime OlivaresCommented:
it is not char 10, it is char 0
0
 
Dnx_7Author Commented:
:(

event the 0 make the same result...

eventReceived = System.Text.Encoding.Unicode.GetString(bytes).TrimEnd(Convert.ToChar(0))

regards...
0
 
Jaime OlivaresCommented:
try with this:

Dim recv as Integer
ReDim bytes(128)
recv mySocket.Receive(bytes, bytes.Length, SocketFlags.None)
eventReceived = System.Text.Encoding.Unicode.GetString(bytes, 0, recv)
0
 
Dnx_7Author Commented:
IT WOOOORKKKKSSS!!!

Thank youuuu very much!

Kind regards
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

  • 4
  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now