Question

Here is my asp.net code:

public static void GetInvoices(int client_id)
{
    using ( var conn = new SqlConnection( GetConnectionString() ) )
    using ( var cmd = conn.CreateCommand() )
    {
        conn.Open();
        cmd.CommandText =
        conn.Open();
        cmd.CommandText =
        @"SELECT o.OrderID, o.OrderDate, o.Status, o.ShipDate, o.PostAmount, sum(p.PaymentAmt) as Paid
            FROM Orders o left outer join payment p on o.orderid = p.orderid WHERE o.DistID = @client_id
            Group by o.OrderID, o.OrderDate, o.Status, o.ShipDate, o.PostAmount
            Order By o.OrderDate Desc";
        cmd.Parameters.AddWithValue( "@client_id", client_id );
        cmd.ExecuteNonQuery();;
    }
}

How can I attach the information returned from this (which could possible be 0 rows returned) to a ListView control?

Is it as easy as

ListViewInvoices.DataSource = GetInvoices(1);
ListViewInvoices.DataBind();

Or is there a more involved to connect it to a sql query data set?

Answer 1

As you can see GetInvoices is a void method; returns nothing. You will need to use DataAdapter to fill and return a DataTable or DataSet. Then the last two lines should work