public override bool NextResult()
{
bool flag;
SqlStatistics statistics = null;
IntPtr ptr;
Bid.ScopeEnter(out ptr, "<sc.SqlDataReader.NextResult|API> %d#", this.ObjectID);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
statistics = SqlStatistics.StartTimer(this.Statistics);
this.SetTimeout();
if (this.IsClosed)
{
throw ADP.DataReaderClosed("NextResult");
}
this._fieldNameLookup = null;
bool flag2 = false;
this._hasRows = false;
if (this.IsCommandBehavior(CommandBehavior.SingleResult))
{
this.CloseInternal(false);
this.ClearMetaData();
return flag2;
}
if (this._parser != null)
{
while (this.ReadInternal(false))
{
}
}
if (this._parser != null)
{
if (this.HasMoreResults())
{
this._metaDataConsumed = false;
this._browseModeInfoConsumed = false;
switch (this._altRowStatus)
{
case ALTROWSTATUS.AltRow:
{
int altRowId = this._parser.GetAltRowId(this._stateObj);
_SqlMetaDataSet altMetaData = this._altMetaDataSetCollection.GetAltMetaData(altRowId);
if (altMetaData != null)
{
this._metaData = altMetaData;
this._metaData.indexMap = altMetaData.indexMap;
}
break;
}
case ALTROWSTATUS.Done:
this._metaData = this._altMetaDataSetCollection.metaDataSet;
this._altRowStatus = ALTROWSTATUS.Null;
break;
default:
this.ConsumeMetaData();
if (this._metaData == null)
{
return false;
}
break;
}
return true;
}
this.CloseInternal(false);
this.SetMetaData(null, false);
return flag2;
}
this.ClearMetaData();
return flag2;
}
catch (OutOfMemoryException exception3)
{
this._isClosed = true;
if (this._connection != null)
{
this._connection.Abort(exception3);
}
throw;
}
catch (StackOverflowException exception2)
{
this._isClosed = true;
if (this._connection != null)
{
this._connection.Abort(exception2);
}
throw;
}
catch (ThreadAbortException exception)
{
this._isClosed = true;
if (this._connection != null)
{
this._connection.Abort(exception);
}
throw;
}
finally
{
SqlStatistics.StopTimer(statistics);
Bid.ScopeLeave(ref ptr);
}
return flag;
}
private bool ReadInternal(bool setTimeout)
{
bool flag;
SqlStatistics statistics = null;
IntPtr ptr;
Bid.ScopeEnter(out ptr, "<sc.SqlDataReader.Read|API> %d#", this.ObjectID);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
statistics = SqlStatistics.StartTimer(this.Statistics);
if (this._parser == null)
{
goto Label_017B;
}
if (setTimeout)
{
this.SetTimeout();
}
if (this._dataReady)
{
this.CleanPartialRead();
}
this._dataReady = false;
SqlBuffer.Clear(this._data);
this._nextColumnHeaderToRead = 0;
this._nextColumnDataToRead = 0;
this._columnDataBytesRemaining = -1L;
if (this._haltRead)
{
goto Label_016A;
}
if (this.HasMoreRows())
{
while (this._stateObj._pendingData)
{
if (this._altRowStatus != ALTROWSTATUS.AltRow)
{
this._dataReady = this._parser.Run(RunBehavior.ReturnImmediately, this._command, this, null, this._stateObj);
if (!this._dataReady)
{
continue;
}
}
else
{
this._altRowStatus = ALTROWSTATUS.Done;
this._dataReady = true;
}
break;
}
if (this._dataReady)
{
this._haltRead = this.IsCommandBehavior(CommandBehavior.SingleRow);
return true;
}
}
if (!this._stateObj._pendingData)
{
this.CloseInternal(false);
}
goto Label_018E;
Label_010E:
this._dataReady = this._parser.Run(RunBehavior.ReturnImmediately, this._command, this, null, this._stateObj);
Label_012E:
if (this._stateObj._pendingData && !this._dataReady)
{
goto Label_010E;
}
if (this._dataReady)
{
this.CleanPartialRead();
}
this._dataReady = false;
SqlBuffer.Clear(this._data);
this._nextColumnHeaderToRead = 0;
Label_016A:
if (this.HasMoreRows())
{
goto Label_012E;
}
this._haltRead = false;
goto Label_018E;
Label_017B:
if (this.IsClosed)
{
throw ADP.DataReaderClosed("Read");
}
Label_018E:
return false;
}
catch (OutOfMemoryException exception3)
{
this._isClosed = true;
SqlConnection connection3 = this._connection;
if (connection3 != null)
{
connection3.Abort(exception3);
}
throw;
}
catch (StackOverflowException exception2)
{
this._isClosed = true;
SqlConnection connection2 = this._connection;
if (connection2 != null)
{
connection2.Abort(exception2);
}
throw;
}
catch (ThreadAbortException exception)
{
this._isClosed = true;
SqlConnection connection = this._connection;
if (connection != null)
{
connection.Abort(exception);
}
throw;
}
finally
{
SqlStatistics.StopTimer(statistics);
Bid.ScopeLeave(ref ptr);
}
return flag;
}
private bool HasMoreResults()
{
if (this._parser != null)
{
if (!this.HasMoreRows())
{
while (this._stateObj._pendingData)
{
switch (this._stateObj.PeekByte())
{
case 0xd1:
return true;
case 0xd3:
if (this._altRowStatus == ALTROWSTATUS.Null)
{
this._altMetaDataSetCollection.metaDataSet = this._metaData;
this._metaData = null;
}
this._altRowStatus = ALTROWSTATUS.AltRow;
this._hasRows = true;
return true;
case 0xfd:
this._altRowStatus = ALTROWSTATUS.Null;
this._metaData = null;
this._altMetaDataSetCollection = null;
return true;
case 0x81:
return true;
}
this._parser.Run(RunBehavior.ReturnImmediately, this._command, this, null, this._stateObj);
}
}
else
{
return true;
}
}
return false;
}
