在选定的dataRow中，我有200个数据记录行。现在我需要将200条记录分成20个[10次（循环）]。所以我使用了take（20）。它将获得前20个记录。
我需要删除前20条记录，需要再选择20条记录。我需要执行10次for循环并获取所有200条记录。
DataRow[] selectedDataRow = dtSMSDetails.Select("description = '" + smsDescription + "'");
if (selectedDataRow.Length > 0)
{
string smsRecordId = "";
string mobileNum = "";
string smsSubject = "";
foreach (DataRow rows in selectedDataRow.Take(20))
{
smsRecordId += rows["activityid"].ToString() + ",";
smsSubject = rows["subject"].ToString();
mobileNum += rows["telephone1"].ToString() + ",";
// Here I need to remove the first 20 (take 20) records from the selected data row and need to loop next 20 records.
}
}