C#

byte[] managedByteArr = new byte[50];

managedByteArr[0] = 200;
fixed (byte* pBytes = managedByteArr)
{
	Console.WriteLine(pBytes[0]);
}

byte[] mArr = new byte[] {6, 9, 11, 25};
for (int i=0; i<mArr.Length; i++)
  Console.WriteLine("0x{0:x2}", mArr[i]);

public class MyClass
{
  // You should actually use properties to expose publicly, not fields.
  public byte[] bytes;
  public MyClass()
  {
    // Can just as easily come from anywhere.
    bytes = new byte[] {6, 9, 11, 25}; 
  }
}

<br />
class myClass<br />
{<br />
 public Array m_arr;  //array field.<br />
<br />
public void MyThreadMethod()<br />
{<br />
 object ret; <br />
 ret=AFunction(Aparam);  //ret is an array of bytes<br />
 Array ar = (Array) ret; //convert the object in Array<br />
 m_arr=ar;  //passing the function return to my array field.<br />
             //inside the thread that's works fine, but out of it m_arr=null.<br />
}           //that's the problem.<br />

private void Save(Stream s)
{
  FileStream file = new FileStream("c:\temp\file.txt", ...);
  using (file)
  {
    byte[] buffer = new byte[4096];
    int read = 0;
    read = s.Read(buffer, 0, buffer.Length);
    while (read != 0)
    {
      file.Write(buffer, 0, read);
      read = s.Read(buffer, 0, buffer.Length);
    }
  }
}

public override in Create(object obj)
{
  Bid bid = obj as Big;
  if (bid == null) throw new ArgumentException("Must pass a Bid object.",
    "obj");
  // Continue with bid...
}