array.clear不要可以吗

array.clear不用可以吗？
先贴段代码如下：

C# code

while (ConSvrStatus)            {                if (System.IO.File.Exists(@"\ResidentFlash2\RMU900_UHF(new)\\markSavefd.txt"))                {                    StreamReader sr = new StreamReader(@"\ResidentFlash2\RMU900_UHF(new)\\markSavefd.txt");                    System.IO.FileInfo fi = new System.IO.FileInfo(@"\ResidentFlash2\RMU900_UHF(new)\\markSavefd.txt");                    int ct = 0;                    while (sr.Peek() >= 0)                    {                        string str1 = sr.ReadLine();                        string[] str2 = str1.Split(new char[] { '-', ' ', '.', ':' });                        string a1 = str2[0];                        string a2 = str2[1];                        string a3 = str2[2];                        string a4 = str2[3];                        string a5 = str2[4];                        string a6 = str2[5];                        string a7 = str2[6];                        string a8 = str2[7];                        string a9 = str2[8];                        string a10 = str2[9];                        string a11 = str2[10];                        string d = str2[0] + str2[1] + str2[2] + str2[3]+str2[4]+str2[5]+str2[6]+str2[7]+str2[8]+str2[9]+str2[10];                        byte[] byteArray = Encoding.Default.GetBytes("FE" + d.ToString() + d.Length + "FD");                        Client.Send(byteArray);                        Array.Clear(byteArray, 0, byteArray.Length);//此处的array.clear可以不用吗？每次执行循环，数组不是重新被赋值了吗，干嘛还要用个清零的动作呢？                        ct++;                                            }                    sr.Close();                    string records = Convert.ToString(ct);                    txtSendData.Text = "records saves ok";                    fi.Delete();                }