Is It Expensive To Do A WHOIS Lookup Using TcpClient.Connect() In C#?
Feb 23, 2010
A customer has asked that we do a dynamic whois lookup on the homepage of their ASP.NET site, based on the IP of the user accessing the site.The implementation would be something like what's described here:
http://www.aspheute.com/english/20000825.asp
However, I noticed that this code connects to whois.networksolutions.com. I am thinking that this may not scale very well if we are initiating a connection to this remote server on every page load.For example, say 1000 different users hit the home page - this would cause a lot of connections to be initiated.
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Apr 4, 2011
I'm a C# programmer and I love the language. I think it's the best thing since sliced bread. Recently I have become real interested in creating a website that offers jobs and allows companies to post jobs for people to navigate through.
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Experienced - Expert
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Apr 28, 2010
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A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 193.0.6.135:43
Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 193.0.6.135:43
Source Error: [Code]....
Line 38: {Line 39: TcpClient objTCPC = new TcpClient();Line 40: objTCPC.Connect("whois.ripe.net", 43);Line 41: Line 42: string strDomain = ip + "
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Feb 15, 2011
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[code]...
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Jul 5, 2010
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[code]...
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Feb 24, 2010
(Not sure if I'm creating this post in the right place. Feel free to move if needed.)
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[Code]....
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Jan 24, 2010
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Jan 27, 2011
I am creating an application and requiring users to enter an Employee id number. I do not want them to freely enter the number so I have a text field with a Find button connected to a ModalPopup Extender.
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[Code]....
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[Exception]
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Mar 2, 2011
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Sep 15, 2010
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<%@ Page Language="C#" MasterPageFile="~/JFCS.Master" CodeBehind="modifyFunder.aspx.cs" Inherits="jfcsGRAMS.modifyFunder" %>
<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="Main">
<div style="float:left;height:500px;width:100%">[code].....
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Apr 16, 2010
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I ahve two tables each with a primary key. There is a lookup table in between the two tables with relationships. Below is a simplified look at the table structure
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In a webform, I have a formview with respective InsertItemTemplate. I have 2 Look Up buttons, one for Student which opens Student LookUp, and one for Mentor which opens the Mentor Look Up.
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[code]....
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May 15, 2010
I have a database table with three columns of interest
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taskkey (integer)
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Aug 31, 2010
I'm looking for a simple webform for maintenance of a SQL Server which has only two columns: LookupID (int, not null) identity and LookupValue (nvarchar (50), not null).
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Mar 7, 2011
I am hoping that people are not going to think it is too simple to bother with, because I am beyond stressed here..
I am trying to display a grid of Articles and their types using:
ASP.NET MVC 3
EF Code First CTP 5
The grid needs to look something like this:
TITLE TYPE
Roses Flower
Tables Furniture
what I need to change/add to the following
[Code]....
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Mar 9, 2011
I'm trying to write a Javascript Zip Code lookup utility.
1) The User will select a State from a drop down.
2) The City Drown Down will then be populated based on the State selected
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Problem: I get the error Request() is not defined which causes the application to hault when a State is selected.
What should I cahnge in the following code?
<script language="javascript">
var request = new Request();
var url = "";
function getZipCode()
{
request.GetNoCache(url + "getZipCode.aspx?City=" +document.getElementById("drpCity").options[document.getElementById("drpCity").selectedIndex].value+ "&State=" +document.getElementById("drpStateSearch").options[document.getElementById("drpStateSearch").selectedIndex].value,
function(result)........
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Dec 1, 2010
I have a web app where a user will visit a page with a QueryString parameter passing the ID of the object I should retrieve.
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Mar 25, 2011
I'm currently writing an N-Tier architected ASP.NET system with a relatively normalised SQL database backend, but I'm struggling to get my head around how lookup values should be represented in my business objects (I don't get the priviledge of using EF or ORMs). My table (as an example) could be structured like this:
CoreDataTable:
ID | Name | Favourite_Colour
---|-------|-----------------
01 | Peter | 01
02 | John | 03
03 | Mary | 05
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01 | Red | 1
02 | Green | 1
03 | Blue | 1
04 | Pink | 1
05 | Black | 1
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[code]....
I'm 100% convinced that I'm (a) overthinking this, and (b) making it more complicated than it needs to be. So, is there a preferred way of doing this? Or is there an option that I've overlooked?
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How is the best way of putting a lookup table in memory for use though my ASP.NET app? Should I do this in the Global.asax's Application_Start event and keep in Session?
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