string strData=",38,,,,,,,,,,,,,,,,,,,,,,,,,,,,382350,,,,,0,,,,8141884584,,,,,,,,";
char[] separator = new char[] { ','
string[] strSplitArr = strData.Split(separator);
for (int q = 0; q < strSplitArr.Length; q++)
{
if (strSplitArr[q] != "")
{
int no = 0;
no = strSplitArr[q].Length;
if (no >= 10 && no <= 12)
{
numString += strSplitArr[q].ToString() + ", ";
}
}
}