Error there is no source code for current location

Question

Hi,
i am very new web tool customization this my first sample page for testing how the netpont.api.dll and netpoint.dll below  i add code
pls guide me how to compile in aspx,iam very new
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using netpoint.api;
using netpoint.classes;
public partial class _Default: NPBasePage
    protected void Page_Load(object sender, EventArgs e)

Answer 1

There are a number of examples in the plugins directory.  If you are on 5.9, look at the ones that have no .cs files.
The connection is created for you automatically in NPBasePage.  I gave you an example of using it in your other post.
I can't give you a complete example because the forum does not allow script tags to be posted.
If you use the API objects you should be able to get most of the data you need.  If you want to do a direct query of the db you can use ADO or the the DataFunctions, which are simply a wrapper of ADO.  Following is an example of using the DataFunctions:
<%@ Control Language="c#" %>
<%@ Import Namespace="netpoint.classes" %>
<%@ Import Namespace="netpoint.api.catalog" %>
<%@ Import Namespace="netpoint.api.data" %>
<%@ Import Namespace="System.Text" %>
--script tag here
    void Page_Load(object sender, System.EventArgs e)
       // this is the object that contains the connection object
        NPBasePage bp = (NPBasePage)Page;
        Stringbuilder sb = new Stringbuilder();
        sb.Append("SELECT OrderID, AccountID, UserID, GrandTotal ");
        sb.Append("FROM OrderMaster ");
        sb.Append("WHERE CartType = 'O' AND AccountID = @acctid");
        DataParameters dp = new DataParameters (1);
        dp.Add(NPDataType.NPString, "@acctid", bp.AccountID);
        myGridView.DataSource = DataFunctions.GetDataSet(sb.ToString(), dp.Paramters, bp.ConnectionString);
        myGridView.DataBind();
--close script tag here