473,326 Members | 2,134 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,326 software developers and data experts.

Object reference not set to an instance of an object.

Expand|Select|Wrap|Line Numbers
  1. using System;
  2. using System.Data;
  3. using System.Configuration;
  4. using System.Web;
  5. using System.Web.Security;
  6. using System.Web.UI;
  7. using System.Web.UI.WebControls;
  8. using System.Web.UI.WebControls.WebParts;
  9. using System.Web.UI.HtmlControls;
  10. using System.Data.SqlClient;
  11. using sqldataadapter;
  12.  
  13. namespace testing
  14. {
  15.     public partial class test : System.Web.UI.Page
  16.     {
  17.  
  18.  
  19.         public void function(string qry)
  20.         {
  21.  
  22.                 string conn = ConfigurationManager.AppSettings["cnn"];
  23.                 SqlConnection conn1 = new SqlConnection(conn);
  24.                 conn1.Open();
  25.                 SqlCommand cmd = new SqlCommand(qry, conn1);
  26.                 string sqd = qry;
  27.                 GridView1.DataSource = cmd.ExecuteReader();
  28.                 GridView1.DataBind();
  29.  
  30.  
  31.             }
  32.  
  33.  
  34.  
  35.         protected void btnclick(object sender, EventArgs e)
  36.         {
  37.  
  38.             string qry3 = "select shipper_name from dat_shipper";
  39.  
  40.             function(qry3);
  41.  
  42.         }
  43.     }
  44. }
  45. namespace testing1
  46. {
  47.     public partial class test1 : System.Web.UI.Page
  48.     {
  49.     protected void Page_Load(object sender, EventArgs e)
  50.       {
  51.  
  52.       }
  53.     protected void Button1_Click(object sender, EventArgs e)
  54.       {
  55.           testing.test ob1 = new testing.test();
  56.           ob1.function("select shipper_name from dat_shipper");
  57.  
  58.       }
  59. }
  60. }
this is the query i written in the code behind page
in this what the problem i have is in the second namespace i mean namespace testing1 i called the namspace tsesting i.e first namespace while am debuging the error is occurd the error is "Object reference not set to an instance of an object." how to i over come this error.
please give me replay........
Nov 3 '07 #1
1 988
kenobewan
4,871 Expert 4TB
My guess is that the main problem is:
Expand|Select|Wrap|Line Numbers
  1. testing.test ob1 = new testing.test();
  2.           ob1.function("select shipper_name from dat_shipper");
Nov 4 '07 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

28
by: Daniel | last post by:
Hello =) I have an object which contains a method that should execute every x ms. I can use setInterval inside the object construct like this - self.setInterval('ObjectName.methodName()',...
6
by: Martin | last post by:
I'd like to be able to get the name of an object instance from within a call to a method of that same object. Is this at all possible? The example below works by passing in the name of the object...
15
by: Carlos Lozano | last post by:
Hi, What is the right way to create an OCX COM component. The component is already registerred, but can't create an instance. I am using the reference to the interop module created. If I use...
3
by: Adam | last post by:
We have a web site that uses .vb for the web pages and .cs for a class module. We are getting the error in .NET 2.0 and VS 2005 beta 2. It does work with .NET 1.1. When trying to access a page...
4
by: Luke Matuszewski | last post by:
Here are some questions that i am interested about and wanted to here an explanation/discussion: 1. (general) Is the objectness in JavaScript was supported from the very first version of it (in...
12
by: Andrew Poulos | last post by:
With the following code I can't understand why this.num keeps incrementing each time I create a new instance of Foo. For each instance I'm expecting this.num to alert as 1 but keeps incrementing. ...
6
by: Shailen Sukul | last post by:
Observed a weird behaviour with object references. See code listing below: using System; using System.Collections.Generic; using System.Text; namespace PointerExceptionTest { /*
14
by: Philipp Reif | last post by:
Hi all, I've got a little hole in my head concerning references. Here's what I'm trying to do: I'm calling a function, passing the reference of a business object for editing. The function clones...
3
by: User1014 | last post by:
A global variable is really just a property of the "Global Object", so what does that make a function defined in the global context? A method of the Global Object? ...
2
by: Ralph | last post by:
Hi I don't understand why it's not working: function schedule(imTop){ this.tdImagesTop = imTop; } schedule.prototype.selectEl = function() { alert(this.tdImagesTop);
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: Vimpel783 | last post by:
Hello! Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.