look up values from another application

look up values from another application

I have a customer list form with account number, customer name, contact name, contact phone, and contact email fields..

I have a form 2 ...with a lookup field for account number...; customer name, contact name ... etc.,


When I select an account in form 2, I would like to fetch the corresponding values for customer name, contact name etc.. from customer list form..

I tried with the following code... and getting error


if (Customer_List.Customer_List[ID == input.Account_number].count() > 0) 
{ 
x = Customer_List.Customer_List.ID [Account_Number == input.Account_number]; 
//input. refers to fields in current form 
input.Customer_Name = x.Customer_Name; 
input.Contact_Name = x.Contact_Name; 
input.Contact_Email = x.Contact_Email; 
}

Can anyone help?

Thanks