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C# Basics: switch control statement

We will look up Switch statement in C#. Switch statement is another control statement that handles multiple selections and enumerations. It could be replace with IF statement.

Database driven web counter with PHP/mySQL

This simpel script stores page hits on a database file. In every visit, script counts the hits and updates database. To drive this PHP script , you need PHP, mySQL. You may setup script easily, just copy and paste following code into a page.

Email validation using regular expressions

This ASP.net code validates any input string that was email address or not. First script checkes all charcters are alphanumeric values such as (a-z,A-Z), numbers (0-9), hyphens (-), underscore (_) and periods (.). Our first rule is to check any un-allowed characters exists. Second step to search an @ sign.

Learn to Program using Python: Lesson 1, Getting Started

This is the first in a series of online tutorial lessons designed to teach you how to program using the Python scripting language.

There is something for just about everyone here. Beginners start at the beginning, and experienced programmers jump in further on. You simply need to enter the series of lessons at the point that best fits your prior programming knowledge.

Learn to Program Using Python: Indexing Nested Tuples

A tuple is an immutable ordered list of objects. It can contain references to any type of object. See Learn to Program using Python: Nested Tuples for a more detailed description.

Learn to Program using Python: Unpacking Tuples

You may find it useful to open another copy of this lesson in a separate browser window. That will make it easier for you to scroll back and forth among the different listings, without losing your place, while you are reading about them.

Beginners start at the beginning, and experienced programmers jump in further along. Learn to Program using Python: Lesson 1, Getting Started , provides an overall description of this online programming course.

Learn to Program Using Python: Empty and Single-Item Tuples

Beginners start at the beginning, and experienced programmers jump in further along. Learn to Program using Python: Lesson 1, Getting Started provides an overall description of this online programming course.

Viewing tip

You may find it useful to open another copy of this lesson in a separate browser window. That will make it easier for you to scroll back and forth among the different code fragments, without losing your place, while you are reading about them.

Learn to Program using Python: Nested Tuples

This lesson will expand your knowledge of tuples by teaching you about nesting tuples within other tuples.

Learn to Program Using Python: Variables and Identifiers

I am taking it slow and easy for the first few lessons. My informal discussion is designed to familiarize you with the Python interactive programming environment

This lesson provides an introduction to the use of variables, and the required syntax of the identifiers used to represent variables.

Learn to Program using Python: Let's Do Numbers

This document is part of a series of online tutorial lessons designed to teach you how to program using the Python scripting language.

Something for everyone

There is something for just about everyone here. Beginners start at the beginning, and experienced programmers jump in further along. Learn to Program using Python: Lesson 1, Getting Started provides an overall description of this online programming course.

Firebird Create Table

The Firebird Create Table Tool allows users to visually create tables. After entering in the table name and the number of columns, the tool allows the user to enter the following information for each column of the table ...

Checking if a record exists in Firebird (EXISTS function)

If you need to check whether certain record exists the usual way is to execute the following command and then check if the :idexists variable is greater than zero (this is an example from a stored procedure

Getting Started with MySQL Stored Procedures

In this tutorial, you will write the first simple stored procedure and invoke it from command line of MySQL.

The first stored procedure is very simple. It retrieves all products from products table. First let's take a look at the stored procedure source code bellow...

PL/SQL Tutorial

PL/SQL is a database-oriented programming language that extends Oracle SQL with procedural capabilities. We will review in this lab the fundamental features of the language and learn how to integrate it with SQL to help solve database problems.

Introduction to Oracle & Java

The Java DataBase Connectivity API is a set of classes allowing a straightforward and vendor-neutral access to database management systems. We will review the basic features of JDBC and their use with Oracle.

Handle Error simple way in ASP.NET

ASP.NET is more easier than other development technologies and languages. While working on asp.net platform, you may access to system windows event log. Using System namespace you retrieve messages.

Create tables in PostgreSQL

Creating tables in PostgreSQL simiar like other SQL databases. Following code creates an table:

CREATE TABLE weather (
city            varchar(80),
temp_lo         int,           -- low temperature
temp_hi         int,           -- high temperature
prcp            real,          -- precipitation
date            date
);

White space (i.e., spaces, tabs, and newlines) can be used freely in SQL commands.PostgreSQL supports the standard SQL types int, smallint, real, double precision, char(N), varchar(N), date, time, timestamp, and interval, as well as other types of general utility and a rich set of geometric types.

Create and retrieve cookies

ASP is very powerful while managing cookies. It's so easy to create a cookie. You may use response object and cookie property to create it. Again request object used to retrieve cookie. Cookies must be written before header sent to client by server. This means you should write and send cookie befre any HTML opening tag.

Best C++ IDE on windows: Bloodshed Dev-C++

Bloodshed Dev-C++ is a full-featured Integrated Development Environment (IDE) for the C/C++ programming language. It uses Mingw port of GCC (GNU Compiler Collection) as its compiler. It creates native Win32 executables, either console or GUI. Dev-C++ can also be used in combination with Cygwin.

Beginning C++ and Array

C++ Arrays are the data structures which can be used to store consecutive values of the same data types. C++ Arrays can be declared for all c++ data types viz., int, float, double, char, struct, char etc., All the values are stored in consecutive memory locations. The values can be accessed by using the position of the stored value.

C++ Tutorial - Data types

C++ practically offers most of the necessary data types except for a basic data type string. This is a big trouble in C++ without such a good feature.

Anyway, this c++ tutorial will discuss the basic data types necessary for c++ programming.

Easy Error Handling in C#

Windows evet log is also very hellpfull while developing projects for web. Floowing code sample will get and display error message from evet log.We'll need to include Diagnostics namspace to our web form. Later we need to create our own an Eventlog object.

interactiveonline web hosting is on sale

Interactive Online is a privately held company dedicated to helping individuals and businesses create a powerful online presence easily and economically. Founded in 1997, Interactive Online has grown considerably by providing a comprehensive array of web services backed by superior service and the latest technology.

PHP mail() function

Following example uses PHP builtin function mail(). Function gets three parameter. Target email, subject and message. Default type is text. But you can enter custom headers: From, Cc, and Bcc. Multiple extra headers should be separated with a CRLF (\r\n).

Filtering results from database

Filter method is very useful working with large datasets. You might need to put only some records from your database but you should select all data from database. Fileter method is advantage working on recordsets after querying on SQL command.

Workingwith Arrays in PHP

Arrays are a large collection of key/value pairs can stores multible variables in a single variable. Arrays are an ordered map which each key could be mapped to a value.

GNews Publisher And Portal Software

GNews Publisher is a perfect solution to manage customizable content, article or news driven web site. This powerful ASP news management software keeps your time and solves all problems in publishing.

Starting to work with JSP Sessions

Session are very helpful to associate some data with each visitor. You may pass and retrieve values in diffrent page using sessions. All sessions are an object associated with each web client. In this sample code we will create a session named `username` and later put a value inside our new Session object. On next step we will get our session value.

Getting Values From Web Forms

We continue to study on JSP basics with HTML coding. Now in this page we will create a basic web form and in next page we will get form results.

Check if the domain name exists

This simple code checks that domain name exist. Only enter any URL in variable $URL and run php code.

Filling Data into Select List

In this short ASP source code, we will pull some data from a database and fill it into a select list. We will create a custom and dynamic output.

Working with Array Remove An Item

Working with arrays could be painful if you could not remove any item after adding them in an array. Arrays are very helpful in programming languages, but in ASP it is not so easy. VBScript does not contains strong functions to remove any item form your array list. Here there is a good ASP code block will be helpfull for your to remove and re-organized your array.

AJAX Repeater control

Repeater control with ItemTemplate, HeaderTemplate, FooterTemplate, AlternatingItemTemplate and SeperatorTemplate created using JavaScript for binding data from XMLHTTP request.

Custom Paging in ASP Fast And Easy

This source code displays results dividing to pages. Code provides Next Previous page links with numeric page numbers. You may modify source code to use with MS SQL or MS Access database. For this example, we have used MS SQL Server using sample database Northwind.

Writing binary files using BinaryWriter

In this source code we will look at anyother new focus on ASP.NET. We could write binay files using BinaryWriter class. Let's see it on a sample code.

Sending Emails in JSP

Before to start to examine this sample code, you need a SMTP server. If you know your mail server name you could easily use this sample code in a real website. We will use JavaMAIL API. You must put j2ee.jar under WEB-INF/lib folder in your web work folder. Our testing system is Red Hat Linux with Tomcat 5.

ASPNET Error Fix for ASP.NET4013 Unauthorized Due to ACL on Resource

If you developed an ASP.NET page and receive an error page form your locale ISS, you should check your setup. Cause, ISS tries to validate web clients for authorized. Normally a web client 's session sets Anounymous account. So you should check NTFS permissions and set correct permissions for .NET setup directory.

Display Top N records from MS Access

This sample ASP code will give us a good idea how to display top 10 records, if we are using MS Access. Because MS Access database has got some limitations which we can not choose a limited data rows from complete database table. Of couse if you using SQL server, there is no any limitations.

Using GetRows To Get All Records From Table

Following example, extracts all of the records in a database table and stores into a 2-dimensional array. This gives you an advantages to modify and work on data.

VBScript Functions The Len Function

In this series of our ASP Developer Articles, we will examine a new VbScript function called as ' The Len() Function'. With LEN functions you can calculate the length of the string. Following function calculates the length of a string taken from input area.

Free User Registration Form

This script lest you to build a registration form for your clients. A visitor can create a username and password filling this form. All usernames and passwords stored in a MS-Access database.

Copying Folders using File System Object

If you want to copy some foldes to another folder, first create a File System Object. CopyFolder method will help you to copy folder ot another folder.

How to set cookies

You can put client's browser a cookie in JSP easily. Following example displays how to create cookie and set target browser.

Generating random strings within PHP

You may use this code snips to make your own random passwords or any other random strings. In this tutorial we need to use two functions of PHP: rand() and chr() .

Encode/Decode an ISO-8859-1 string to UTF-8

PHP can encode or decode any string easily. utf8_encode function encodes the string data to UTF-8, and returns the encoded version. In other hand utf8_decode converts a string with ISO-8859-1 characters encoded with UTF-8 to single-byte ISO-8859-1.

Creating error pages using .htaccess

We can create custom Error Pages using .htaccess file. Still you've a chance to update error pages, updating apache configuration.

ArrayList object usage with example

Following example is about to usage of ArrayList object. To use ArrayList in your applications, you should import System.Collections namespace. IList interface dynamically increase and decrease array. So you do not worry about array size. Our examples are in C#

Filter Data Using the Having Clause

The reason for having a database is to have vast amounts of data organized and readily available. SQL is the means by which we can communicate with the database and tell it to find exactly what we need. From thousands of records, we can filter it down to precisely what we are searching for, granted if the database schema was created efficiently.

Let’s look at an example, using the HAVING clause. Let’s say we wanted to search for all employees who have an average salary of $50,000.

Beginning Ajax and ASP.NET 3.5

Ajax is a great helper to us while developing rapid applications without worrying us at power of asynchronous. In Visyal Web Developer 2008 comes with builtin Atlas and ASP.NET3.5 . In this tutorial, I try to show you what's ajax and database querying at same time.

Using SUM Function in An SQL Statement

Sum function can be used for to get the sum of a numeric expression evaluated over a set. This function must be placed in an SQL statement. Following example will return the sum of ratings in articles.