convert arraylist to byte

[stephaniee]

Hi,

I have created a program to get a value. This is my program code.

 private byte getValue (byte[]ComBuffer)
           {
                ArrayList list = new ArrayList();
                int intVal=0;
                for (intVal=0; intVal<129; intVal++)
                {
                    list.Add(ComBuffer[intVal+1]);
                }
                return list;
            }

When i typed these codes, i have an error message saying that "cannot implicitly convert type 'System.Collections.ArrayList' to 'byte"

then when i need to use

    void DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
 
            int bytes = comPort.BytesToRead;
            byte[] comBuffer = new byte[bytes];
            comPort.Read(comBuffer, 0, bytes);
 
            getValue();
        }

when i put the getValue method on the data received event, i have another error saying that "No overload for method 'getValue' takes '0' arguements
Can anyone help me on this?

[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]

when i put the getValue method on the data received event, i have another error saying that "No overload for method 'getValue' takes '0' arguements

That's because the method you wrote called "getValue" requires you send it a single parameter of a byte[]

private byte getValue (byte[]ComBuffer)

yet you are trying to call it without sending it a byte[]

 getValue();

i have an error message saying that "cannot implicitly convert type 'System.Collections.ArrayList' to 'byte"

You defined "list" to be of type "ArrayList"

ArrayList list = new ArrayList();

yet you are trying to shove one byte out of your byte[] into one of the elements

list.Add(ComBuffer[intVal+1]);

I strongly suggest you try reading about the types you are trying to use so you understand them BEFORE you just throw them into code in an effort to guess what they are by how they react. The MSDN has complete descriptions and sample code for their use. MSDN for ArrayList

I would also suggest you start learning from a self-teaching book such as "C# in 21 days" or something similar.