I have the database in access and i have created the connection, command in oledb when i am trying to execute the command i getting error like
"Parameter @invoiceno has no default value."
let me know what should be done ?


Insert into newsales(invoiceno,customercode) values(@invoiceno,@customercode)"

You need to provide a value for the variables in the query. You can do it like this:

OleDbCommand.Parameters.Add(new OleDbParameter("variablename", value))

-Peter