数组分隔

数组等量分隔成几个 

如 

string[] oldArray=new string[]{1,2,3,4,5,6,7,8,9}

string[] newArray=Splice(oldArray,',',3);

分隔后

newArray[0]={1,2,3};

newArray[1]={4,5,6};

newArray[2]={7,8,9};

 private static string[] Splice(string[] oldArray, char splitChar, int length)
        {
            string[] ret;
            int count = oldArray.Length;
            if (count > length)
            {
                int num = count / length;
                if (count % length > 0)
                {
                    num++;
                }
                ret = new string[num];
                for (int i = 0; i < num; i++)
                {
                    int m = 0;
                    StringBuilder sb = new StringBuilder();
                    for (int j = i * length; j < count; j++)
                    {
                        sb.Append(oldArray[j] + splitChar);
                        m++;
                        if (m == length)
                        {
                            break;
                        }
                    }
                    ret[i] = sb.ToString().TrimEnd(splitChar);
                    sb = null;
                }
            }
            else
            {
                ret = new string[1];
                ret[0] = string.Join(splitChar.ToString(), oldArray);
            }
            return ret;
        }