How to use TempDB as Data Source

Dear All,

I hope I am asking the question in the right Forum. 

I have 2 TempDB tables 

CBLTblSchedDataSaleTmp    CBLTblSchedDataSale;
CBLTblSchedDataTemp       _CBLTblSchedDataTemp;

I have inserted some data in _CBLTblSchedDataTemp and I want to use the data, apply some query and write data to another TempDB,  CBLTblSchedDataSale. Extract from my code is as follows

[SrsReportDataSetAttribute(tableStr(CBLTblSchedDataSaleTmp))]
public CBLTblSchedDataSaleTmp Get_CBLTblSchedDataSaleTmp()
{
select CBLTblSchedDataSale;
return CBLTblSchedDataSale;
}

[SrsReportDataSetAttribute(tableStr(CBLTblSchedDataTemp))]
public CBLTblSchedDataTemp Get_CBLTblSchedDataTemp()
{
select _CBLTblSchedDataTemp;
return _CBLTblSchedDataTemp;
}

public void processReport()
{
_Contract=this.parmDataContract() as CBLClsSchedDataContract;
_PRODID=_Contract.prodID();

while
select sum(QtyOrdered), SLD_SALESORDER
from _CBLTblSchedDataTemp
group by SLD_SALESORDER

join _InventDim
where _salesLine.InventDimId==_InventDim.inventDimId

join SizeId, DropId
from _SizeChart
group by SizeId,DropID
where _SizeChart.InventSizeId==_InventDim.InventSizeId

join _ItemData
where _ItemData.ItemId==_salesLine.ItemId
&& _SizeChart.SizeChartId==_ItemData.SizeChartId
{
CBLTblSchedDataSale.SLD_SALESORDER=_CBLTblSchedDataTemp.SLD_SALESORDER;
CBLTblSchedDataSale.QtyOrdered=_CBLTblSchedDataTemp.QtyOrdered;
CBLTblSchedDataSale.SizeID=_CBLTblSchedDataTemp.SizeID;
CBLTblSchedDataSale.DropID=_CBLTblSchedDataTemp.DropID;
CBLTblSchedDataSale.insert();
}

}

The highlighted part is skipped after reading the While Select statement. Help Required