Good day,
I am stuck at his moment figuring how could i solve this porblem.. I created a method that will retreive a value from the dbase and place it in the dropdownlist.. so here is my code
protected void ddlSalesOrg_SelectedIndexChanged(object sender, EventArgs e)
{
_lkpPlantEntities.plant = ddlPlant.SelectedValue;
_lkpCustomerEntities.txtSalesOrg = ddlSalesOrg.SelectedValue;
ddlSalesOffice.DataSource = _tradeDealsBll.GetSalesOfficeBLL(_lkpCustomerEntities);
ddlSalesOffice.DataValueField = "txtSalesOffice";
ddlSalesOffice.DataTextField = "txtSalesOffice";
ddlSalesOffice.DataBind();
}
at the 3rd line of my code is filter.. //_lkpPlantEntities.plant = ddlPlant.SelectedValue;
for plant
while the 4th line is a filter again.. //_lkpCustomerEntities.txtSalesOrg = ddlSalesOrg.SelectedValue;
for sales org
meaning the first filter which is plant is part of the plantEntities or plant class
and the salesorg is part of the CustomerEntities or Customer class
i passed the value of my GetSalesOfficeBLL(_lkpCustomerEntities); to my BLL
so here is my code for that
public DataTable GetSalesOfficeBLL(LKPCustomerEntities _lkpCustomerEntities)
{
return base.GetSalesOfficeDAL(_lkpCustomerEntities);
}
after that this method pass in my DAL GetSalesOfficeDAL(_lkpCustomerEntities);
so here is my code for that
protected DataTable GetSalesOfficeDAL(LKPCustomerEntities _lkpCustomerEntities)
{
return base.FillDataTable("spGet_SalesOffice", _lkpCustomerEntities);
}
my Stored proc seems to be okey. coz it is running.
here is my SP..
--my parameters
@plant varchar(4)
,@txtSalesOrg nvarchar(10)
SELECT DISTINCT CUSTOMER.TXTSALESORG,CUSTOMER.TXTSALESOFFICE
--CUSTOMER.TXTDELLOC
,PLANT.PLANT
,Customer.txtCity
FROM PHSROD20.C1DB.DBO.LKPCUSTOMER CUSTOMER
INNER JOIN PHSROD20.C1DB.DBO.LKPSAPPLANT PLANT
ON CUSTOMER.TXTDELLOC = PLANT.PLANT
WHERE PLANT.plant = @plant
and CUSTOMER.txtsalesorg = @txtSalesOrg
my problem is that there's an error for the filter plant which is
Object reference not set to an instance of an object.
i know that the sol. here is overloading.. can somebody tell me how should i overloadclasses..
or can someone give me a link on s much simpler lesson for overloading. or polymorphism..
thanks..
