I implement function done by cshar return dataset but it display error and i don't know where is error
and how to solve this error please
function generate error
public DataSet UnlockUser(string szLoginName, string strHost) { DataSet objDS = new DataSet(); string strEnv = ""; try { objDS = _ISecurityService.GetEnv(szLoginName.Trim()); if (objDS.Tables[0].Rows.Count > 0) { strEnv = objDS.Tables[0].Rows[0][0].ToString(); if (strEnv.Trim() == "PY" || strEnv.Trim() == "PD") { if (_ISecurityService.ChangeFailedLoginAttempts(szLoginName, 0) > 0) { if (_ISecurityService.AuditLoginAttempts(szLoginName, strHost, "S", objDS.Tables[0].Rows[0][0].ToString(), "Account is Unlocked", "Unlock") > 0) { return _ISecurityService.FillRtnDs("0", " User - " + szLoginName.Trim() + " is Unlocked Successfully"); } else { return _ISecurityService.FillRtnDs("E9", "Failed to Unlock, Please try again"); } } } else { return _ISecurityService.FillRtnDs("-4", "Invalid User with Different Env"); //Invalid User with Different Env } } else { return _ISecurityService.FillRtnDs("-5", "Invalid User"); //Invalid User } } catch (Exception ex) { return _ISecurityService.FillRtnDs("E9", ex.Message); } }