Re: How is this conditional able to execute?

The critical thing here is, what is ClientForm.ReturnData? Is it a control
on a form? What is it's Type?

Are you saying that directly after execution of the line:

Dim returndata As String = Trim(Encoding.UTF8.GetString(bytes))

returndata contains an empty string? If so how are you testing this?

Although it should not hurt anything, returndata.ToString is redundant
because returndata is actually a string.


"Brett" <no@xxxxxxxx> wrote in message
news:epc2VnvQFHA.2736@xxxxxxxxxxxxxxxxxxxxxxx
>I only put the values that way to show what they are. I wasn't actually
>assigning anything.
>
> This code is in a loop. Most of the time, returndata is the empty string.
>
> networkStream = tcpClient.GetStream()
> Dim bytes(tcpClient.ReceiveBufferSize) As Byte
> networkStream.Read(bytes, 0,
> tcpClient.ReceiveBufferSize)
> Dim returndata As String =
> Trim(Encoding.UTF8.GetString(bytes))
>
> If returndata.ToString <> "" And
> returndata.ToString <> ClientForm.ReturnData Then
> ClientForm.ReturnData = returndata
> returndata = Nothing
> Else
> End If
> End If
>
> bytes always has a length of 8193. Up until about the 35th element of its
> array, the values are non zero. After that they are all zero. Possibly
> I'm not seeing something that is kept in bytes when I assign it to
> returndata? Although returndata appears to be the empty string, it may
> have some other value.
>
>
>
> "Stephany Young" <noone@localhost> wrote in message
> news:e6sPJevQFHA.576@xxxxxxxxxxxxxxxxxxxxxxx
>> Did you forget to include the values?
>>
>> Your code cannot possiblity work because
>>
>> returndata.ToString = ""
>>
>> gives a compile-time error:
>>
>> error BC30068: Expression is a value and therefore cannot be the
>> target of an assignment.
>>
>> It would pay to show the ACTUAL code including the declarations of and
>> assignments to variables returndata and ClientForm.ReturnData.
>>
>>
>> "Brett" <no@xxxxxxxx> wrote in message
>> news:%23HIUlxuQFHA.1476@xxxxxxxxxxxxxxxxxxxxxxx
>>> The following conditional executes given the values listed. I've listed
>>> the values below for each of these variables. How is it that the
>>> conditional still executes:
>>>
>>> If (returndata.ToString <> "") And (returndata.ToString <>
>>> ClientForm.ReturnData) Then
>>>
>>> returndata.ToString = ""
>>> ClientForm.ReturnData = Nothing
>>>
>>> The first test fails and the second passes. The AND should then fail
>>> correct?
>>>
>>> Thanks,
>>> Brett
>>>
>>
>>
>
>


.

Relevant Pages

  • Re: How is this conditional able to execute?
    ... assigning anything. ... returndata is the empty string. ... >> The following conditional executes given the values listed. ... >> The first test fails and the second passes. ...
    (microsoft.public.dotnet.languages.vb)
  • Re: How is this conditional able to execute?
    ... Public Shared ReturnData As String ... It is always assigned a string value. ... >>assigning anything. ... >>> It would pay to show the ACTUAL code including the declarations of and ...
    (microsoft.public.dotnet.languages.vb)