Connection closed but i open it why?

Question

my code:
GetRecordsByPaging_v4(.......)
OracleCommand CalPgCountRdCount=null;
OracleCommand GetRecordFromPage=null;
try
common.ErrorLog("before " + orlConn.State.ToString());
if (orlConn.State != ConnectionState.Open)
orlConn.Open();
common.ErrorLog("after " + orlConn.State.ToString() + "\r\n");
CalPgCountRdCount = new OracleCommand();
CalPgCountRdCount.CommandText = "Records.CalPgCountRdCount_v3";
CalPgCountRdCount.CommandType = CommandType.StoredProcedure;
CalPgCountRdCount.Connection = orlConn;
CalPgCountRdCount.ExecuteNonQuery(); //here get error:
my error:
stack error： 在 Oracle.DataAccess.Types.OracleRefCursor..ctor(OracleConnection con, IntPtr opsSqlCtx, OpoSqlValCtx* pOpoSqlValCtx, Int32 freeOpsSqlCtx)
在 Oracle.DataAccess.Types.OracleRefCursor..ctor(OracleConnection con, IntPtr opsSqlCtx, OpoSqlValCtx* pOpoSqlValCtx)
在 Oracle.DataAccess.Client.OracleParameter.PostBind_RefCursor(OracleConnection conn, OpoSqlValCtx* pOpoSqlValCtx)
在 Oracle.DataAccess.Client.OracleParameter.PostBind(OracleConnection conn, OpoSqlValCtx* pOpoSqlValCtx, Int32 arraySize)
在 Oracle.DataAccess.Client.OracleCommand.ExecuteReader(Boolean requery, Boolean fillRequest, CommandBehavior behavior)
在 Oracle.DataAccess.Client.OracleCommand.ExecuteReader()
在 EC168CH.OracleDAL.DataPaging.GetRecordsByPaging_v4(String strTableName, String strFiledName, String strWhereFiliter, Decimal
error message is : 必须打开连接才能执行此操作( the connection must be open before this operation)
i install ODAC1020221.exe on my server windows 2003 for oracle 10.2 ,i use asp.net 2.0

Answer 1

here is all the code of c#
public DataTable GetRecordsByPaging_v4(string strTableName,
string strFiledName,
string strWhereFiliter,
decimal decPageSize,
decimal decPageIndex,
decimal decOrderType,
out decimal decRecordCount,
out decimal decPageCount)
decRecordCount = 0;
decPageCount = 0;
orlConn = new OracleConnection(common.ConnStr());
DataTable dtData = new DataTable();
OracleCommand CalPgCountRdCount=null;
OracleCommand GetRecordFromPage=null;
OracleConnection orlConn_ora = new OracleConnection(common.ConnStr());
try
common.ErrorLog("before " + orlConn.State.ToString());
if (orlConn.State != ConnectionState.Open)
orlConn.Open();
common.ErrorLog("after " + orlConn.State.ToString() + "\r\n");
orlConn_ora.Open();
CalPgCountRdCount = new OracleCommand();
CalPgCountRdCount.CommandText = "Records.CalPgCountRdCount_v3";
CalPgCountRdCount.CommandType = CommandType.StoredProcedure;
CalPgCountRdCount.Connection = orlConn;
//2
CalPgCountRdCount.Parameters.Add("PageCount", OracleDbType.Decimal);
CalPgCountRdCount.Parameters[0].Direction = ParameterDirection.Output;
//3
CalPgCountRdCount.Parameters.Add("RecordCount", OracleDbType.Decimal);
CalPgCountRdCount.Parameters[1].Direction = ParameterDirection.Output;
//4
CalPgCountRdCount.Parameters.Add("tblName", OracleDbType.Varchar2);
CalPgCountRdCount.Parameters[2].Direction = ParameterDirection.Input;
CalPgCountRdCount.Parameters.Add("strWhere", OracleDbType.Varchar2);
CalPgCountRdCount.Parameters[3].Direction = ParameterDirection.Input;
//7
CalPgCountRdCount.Parameters.Add("PageSize", OracleDbType.Decimal);
CalPgCountRdCount.Parameters[4].Direction = ParameterDirection.Input;
CalPgCountRdCount.Parameters["tblName"].Value = strTableName.Trim();
CalPgCountRdCount.Parameters["strWhere"].Value = strWhereFiliter.Trim();
CalPgCountRdCount.Parameters["PageSize"].Value = decPageSize;
GetRecordFromPage = new OracleCommand();
GetRecordFromPage.CommandText = "Records.GetRecordFromPage_v3";
GetRecordFromPage.CommandType = CommandType.StoredProcedure;
GetRecordFromPage.Connection = orlConn_ora;
//1
GetRecordFromPage.Parameters.Add("ref_cursor", OracleDbType.RefCursor);
GetRecordFromPage.Parameters[0].Direction = ParameterDirection.Output;
GetRecordFromPage.Parameters.Add("tblName", OracleDbType.Varchar2);
GetRecordFromPage.Parameters[1].Direction = ParameterDirection.Input;
//5
GetRecordFromPage.Parameters.Add("fldName", OracleDbType.Varchar2);
GetRecordFromPage.Parameters[2].Direction = ParameterDirection.Input;
//6
GetRecordFromPage.Parameters.Add("strWhere", OracleDbType.Varchar2);
GetRecordFromPage.Parameters[3].Direction = ParameterDirection.Input;
//7
GetRecordFromPage.Parameters.Add("PageSize", OracleDbType.Decimal);
GetRecordFromPage.Parameters[4].Direction = ParameterDirection.Input;
//8
GetRecordFromPage.Parameters.Add("PageIndex", OracleDbType.Decimal);
GetRecordFromPage.Parameters[5].Direction = ParameterDirection.Input;
//9
GetRecordFromPage.Parameters.Add("OrderType", OracleDbType.Decimal);
GetRecordFromPage.Parameters[6].Direction = ParameterDirection.Input;
GetRecordFromPage.Parameters["tblName"].Value = strTableName.Trim();
GetRecordFromPage.Parameters["fldName"].Value = strFiledName.Trim();
GetRecordFromPage.Parameters["strWhere"].Value = strWhereFiliter.Trim();
GetRecordFromPage.Parameters["PageSize"].Value = decPageSize;
GetRecordFromPage.Parameters["PageIndex"].Value = decPageIndex;
GetRecordFromPage.Parameters["OrderType"].Value = decOrderType;
CalPgCountRdCount.ExecuteNonQuery();
decRecordCount = Convert.ToDecimal(CalPgCountRdCount.Parameters["RecordCount"].Value.ToString());
decPageCount = Convert.ToDecimal(CalPgCountRdCount.Parameters["PageCount"].Value.ToString());
if (decRecordCount > 0 && decPageCount > 0)
OracleDataReader drData = GetRecordFromPage.ExecuteReader();
dtData.Load(drData);
catch (Exception err)
string errString = "分页错误：";
if (err.StackTrace != null)
errString += "\r\n错误堆栈：" + err.StackTrace.ToString();
if (err.InnerException != null)
errString += "。\r\n内部错误：" + err.InnerException.Message;
if (err.InnerException.StackTrace != null)
errString += "\r\n内部错误堆栈：" + err.InnerException.StackTrace.ToString();
if (err != null)
string rows = "null";
if (dtData != null)
rows = dtData.Rows.Count.ToString();
Exception er = new Exception(errString + "\r\n" + err.Message + "|| exterl:" + rows + " ;\r\nUrl:" + HttpContext.Current.Request.Url.AbsoluteUri + " \r\nstrTableName:" + strTableName + "\r\nstrFiledName:" + strFiledName + "\r\nstrWhereFiliter:" + strWhereFiliter + "\r\ndecPageSize" + decPageSize + "\r\ndecPageIndex:" + decPageIndex + "\r\ndecOrderType:" + decOrderType);
common.ErrorLog(er);
else
Exception er = new Exception("error is null");
common.ErrorLog(er);
finally
GetRecordFromPage.Dispose();
CalPgCountRdCount.Dispose();
orlConn.Close();
orlConn.Dispose();
orlConn1.Close();
orlConn1.Dispose();
return dtData;
}