Victor's Programming Aid

Javascript Confirm on ASP LinkButton

Victor Chen — Thu, 09 Jul 2009 18:10:04 +0000

In your C# web application, a common task is adding items to a database. But often just as important is the ability to delete items! The first method to accomplish this goal is linking an event to a LinkButton. This event links to a method that deletes. However, because a delete operation is a times [...]

Installing an Internal Hard Drive on Linux

Victor Chen — Sat, 30 May 2009 16:13:07 +0000

Mounting an internal hard drive in Linux is not quite as simple as installing a hard drive on a Windows machine. After installing the hard drive, there are only a few steps that I will cover below. First, before this will work, you need to make sure the motherboard recognizes there is a new hard [...]

How to Get Linux Version, Build, and Distribution

Victor Chen — Wed, 27 May 2009 16:10:32 +0000

Getting the Linux Version, build, and Distribution is easy. In the example below, I ran the command on a Dell Optiplex 755 running CentOS 4.6. Just run the command below in a terminal window and the output will display useful information: cat /proc/version Linux version 2.6.9-67.0.15.ELsmp (mockbuild@builder10.centos.org) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-9)) #1 SMP Thu [...]

301 Redirect in IIS 6.0

Victor Chen — Mon, 18 May 2009 16:09:29 +0000

If you are planning to move a website to a new domain name, the most efficient way to setup URL redirection is to with the 301 Redirect. The 301 HTTP status code means moved permanently. For this reason, it is the best method to use to preserve a website’s search engine placement. This tutorial will cover [...]

Change Web Browser Title with Javascript

Victor Chen — Mon, 13 Apr 2009 16:00:12 +0000

Every web browser has a title at the top of the page and is specified in HTML. By default, the the title tag is located in the header of the HTML. Despite the default in HTML, it is possible to change the default title name with javascript. Below is a the basic snippet of javascript [...]

Directory Disk Space in Linux

Victor Chen — Fri, 10 Apr 2009 16:22:44 +0000

Running Linux distribution Centos 4.6, I need to check the disk space available in a directory. For this, I use the command df, which reports the file system disk space usage. df This command returns the file system, the mount directory, total disk space, used disk space, and available disk space (in 1-K blocks) based on currently [...]

Calculate Average in PHP Example

Victor Chen — Tue, 07 Apr 2009 16:28:23 +0000

To calculate the average of numbers in PHP, we first need to add up all the item, then divide by the total number of items. In our example, we will add up the eight numbers 2, 4, 5, 3, 2, 9, 11, and 9. First, the code example: <?php $totalRatings = 2+4+5+3+2+9+11+9; $totalVotes = 8; [...]

Creating a Dropdown in HTML

Victor Chen — Thu, 02 Apr 2009 16:16:21 +0000

This is a quick tutorial on creating a dropdown in HTML. The example below has a name of myName and an id of myId. The main difference between the id and name is that the id is the identifier as used by javascript. On the other hand, name is the value recognized by form postbacks. First, [...]

Convert String to Int in Java

Victor Chen — Thu, 26 Mar 2009 16:04:07 +0000

Converting a string variable to an integer variable in Java is easy. There are actually two different approaches, both equally simply. Below is an example of both approaches, with both use the same string variable to output to various integer variables. String myVariable = “12345″; Approach 1: int approach1 = Integer.parseInt(myVariable); Approach 2: int approach2 = Integer.valueOf(myVariable); If you have any [...]

Call Static Method With a String Name in C#

Victor Chen — Wed, 11 Mar 2009 04:05:00 +0000

The situation is as follows. You want to call a method in the currently executing namespace, but you do not know the name of the static method while coding (perhaps the method name is dynamic and saved in a database or text file). How do you dynamically call the static method with just a string [...]