byte to int conversion error

[stephaniee]

Hi,

Im using Visual C# Express Edition 2008. I need to do byte to integer conversion. Here is my codes:

private string ByteToInt(byte[] xyz)
{

if (BitConverter.IsLittleEndian)
Array.Reverse(xyz);
}

The error is not all code paths return a value. I wasnt sure what the problem lies. I tried to put return xyz. Another error popped up saying "cannot implicity convert type 'byte[]' to 'string'.

Can anyone help me??

Thanks.

[tlhintoq]

Your method is defined to return a string

private string ByteToInt(byte[] xyz)

But you aren't returning *a string*.

Either change your return type to byte[] or convert your byte[] to a string then return that.

return xyz.ToString()

[stephaniee]

Your method is defined to return a string

private string ByteToInt(byte[] xyz)

But you aren't returning *a string*.

Either change your return type to byte[] or convert your byte[] to a string then return that.

return xyz.ToString()

Thanks. The problem can be solved.

I have another question

Here is my code:

public void WriteData(string words)
        {
                    
                    if (!(comPort.IsOpen == true)) comPort.Open();
                  //byte to string
                    byte[] abc = System.Text.Encoding.UTF8.GetBytes(words);
                 // string to byte  
                    words = System.Text.Encoding.UTF8.GetString(abc);
                     

                    words = ByteToInt(abc);
                        //send the message to the port
                        comPort.Write(abc, 0, abc.Length);                        
                        DisplayData(MessageType.Outgoing, ByteToInt(abc) + "\n");

The display message : System.Byte[]. I don't know why the display appeared this way. What had happened? I tried to write words instead of abc. An error occured saying that "cannot convert 'string' to 'byte[]' "

[alexis4]

I think you should send characters and not bytes to the serial port. They are both 8-bit, but bytes represent arithmetic values.

[tlhintoq]

TIP: When you are writing your question, there is a button on the tool bar that wraps the [code] tags around your copy/pasted code. It helps a bunch. Its the button with a '#' on it. More on tags. They're cool. Check'em out.

[tlhintoq]

Its hard to help when I don't know where the problems happen.

On line 8 you assign to the variable 'words' ... then do nothing with that.
On line 11 you then re-assing to the variable 'words'

You don't say which line produces the error

[tlhintoq]

Its hard to help when I don't know where the problems happen.

On line 8 you assign to the variable 'words' ... then do nothing with that.
On line 11 you then re-assing to the variable 'words'

You don't say which line produces the error