Column 'PDTID' does not belong to table

Question

1.00/5 (1 vote)

See more:

Hi Friends, I've a problem. My AddToCart page was running Smoothly without login. But I Recently Added login page. After that it showing me exception Column 'PDTID' does not belong to table .What to do?

What I have tried:

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OleDb;

public partial class AddToCart : System.Web.UI.Page
{
    static Boolean availabledesignid = false;
    static Boolean orderconfirm;
    static int quantityavailable;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["username"] == null)   // It was working properly, before adding this login part
        {
            Response.Redirect("~/Login/Login.aspx");
        }
        if (Session["addproduct"].ToString() == "true")
        {
            DataTable dt = new DataTable();
            DataRow dr;
            dt.Columns.Add("sno");
            dt.Columns.Add("PDTID");
            dt.Columns.Add("PDTNAME");
            dt.Columns.Add("IMAGE");
            dt.Columns.Add("PRICE");
            dt.Columns.Add("QUANTITY");
            dt.Columns.Add("totalprice");

            if (Request.QueryString["id"] != null)
            {
                if (Session["Buyitems"] == null)
                {

                    dr = dt.NewRow();
                    String mycon = @"Provider=Microsoft.Ace.OLEDB.12.0;Data Source=C:\Users\computer\Documents\Visual Studio 2010\WebSites\WebSite3\Shop.accdb";
                    OleDbConnection scon = new OleDbConnection(mycon);
                    String myquery = "select * from Products where PDTID=" + Request.QueryString["id"];      
                    OleDbCommand cmd = new OleDbCommand();
                    cmd.CommandText = myquery;
                    cmd.Connection = scon;
                    OleDbDataAdapter da = new OleDbDataAdapter();
                    da.SelectCommand = cmd;
                    DataSet ds = new DataSet();
                    da.Fill(ds);
                    dr["sno"] = 1;
                    dr["PDTID"] = ds.Tables[0].Rows[0]["PDTID"].ToString();   //here its showing that exception
                    dr["PDTNAME"] = ds.Tables[0].Rows[0]["PDTNAME"].ToString();
                    dr["IMAGE"] = ds.Tables[0].Rows[0]["IMAGE"].ToString();
                    dr["QUANTITY"] = Request.QueryString["QUANTITY"];
                    dr["QUANTITY"] = Request.QueryString["QUANTITY"];
                    dr["PRICE"] = ds.Tables[0].Rows[0]["PRICE"].ToString();
                    Int64 price = Convert.ToInt64(ds.Tables[0].Rows[0]["PRICE"].ToString());
                    Int64 quantity = Convert.ToInt64(Request.QueryString["QUANTITY"].ToString());
                    Int64 totalprice = price * quantity;
                    dr["totalprice"] = totalprice;
                    savecartdetail(1, ds.Tables[0].Rows[0]["PDTID"].ToString(), ds.Tables[0].Rows[0]["PDTNAME"].ToString(), ds.Tables[0].Rows[0]["IMAGE"].ToString(), "1", ds.Tables[0].Rows[0]["PRICE"].ToString(), totalprice.ToString());
                    dt.Rows.Add(dr);
                    GridView1.DataSource = dt;
                    GridView1.DataBind();

                    Session["buyitems"] = dt;
                    GridView1.FooterRow.Cells[5].Text = "Total Amount";
                    GridView1.FooterRow.Cells[6].Text = grandtotal().ToString();
                    Response.Redirect("AddToCart.aspx");

                }

Posted 18-Mar-19 10:04am

Member 14186984

Updated 18-Mar-19 17:18pm

v4

Add a Solution

Comments

[no name] 18-Mar-19 16:17pm

At what point does it complain? The Access table might be the problem for all we know.

Maciej Los 18-Mar-19 16:45pm

Are you sure that Access database do have a PDTID column?
I'd change this:

SELECT * from Products where PDTID=?

to:

SELECT * from Products AS P where P.PDTID=?

You have to be warned about SqlInjection. So, i'd use OleDbCommand with paramteres!

CHill60 18-Mar-19 16:56pm

Looks like the solution to me

Maciej Los 18-Mar-19 17:02pm

I've followed your suggestion, Caroline ;)

Member 14186984 18-Mar-19 23:14pm

System.ArgumentException was unhandled by user code
Message=Column 'PDTID' does not belong to table .
Source=System.Data
StackTrace:
at System.Data.DataRow.GetDataColumn(String columnName)
at System.Data.DataRow.set_Item(String columnName, Object value)
at AddToCart.Page_Load(Object sender, EventArgs e) in c:\Users\computer\Documents\Visual Studio 2010\WebSites\WebSite3\AddToCart.aspx.cs:line 103
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Accepted Answer · 2019-03-18T11:02:00

Are you sure that Access database do have got a PDTID column?

I'd change this:

SQL

SELECT * from Products where PDTID=?

to:

SQL

SELECT * from Products AS P where P.PDTID=?

You have to be warned about SqlInjection. So, i'd use OledbCommand[^] with parameters!

[EDIT]
I'd simplify your code to this:

C#

string sConn = @"Provider=Microsoft.Ace.OLEDB.12.0;Data Source=C:\Users\computer\Documents\Visual Studio 2010\WebSites\WebSite3\Shop.accdb;Persist Security Info =False;";
DataTable dt = new DataTable();

int pdtid = Request["id"]; //i'm not sure, but seems that conversion is needed here...
string sComm = "SELECT P.* FROM Products AS P WHERE P.PDTID=?;";

using (OleDbConnection oConn = new OleDbConnection(sConn))
    {
        oConn.Open();
        using (OleDbCommand oComm  = new OleDbCommand(sComm, oConn))
        {
            oComm.Parameters.Add(new OleDbParameter(){Value=pdtid});
            using (OleDbDataReader oRdr = oComm.ExecuteReader())
            {
                dt.Load(oRdr);
            }
        }
    }

if(dt.Rows.Count>0)
{
    DataColumn dc = new DataColumn("TotalPrice", typeof(double));
    dc.Expression = "PRICE * QUANTITY";
    dt.Columns.Add(dc);
    GridView1.DataSource = dt;
    //further instructions
}

For further details, please see:
DataColumn.Expression Property (System.Data) | Microsoft Docs[^]