Author Archives: Christoffer Wadensten

(C#) Generate random readable passwords

Here’s a super simple function that generates humanly readable passwords by weaving random consonants and wovels.

The generated passwords are by no means secure. I did this for an application used to launch game servers and wanted to make the passwords be easy to communicate over Skype. Continue reading →

(C#) Swap two items in a generic list

Put this in a static class. This will apply to Lists of any type.

public static IList<T> Swap<T>(this IList<T> list, int indexA, int indexB)
{
	if (indexB > -1 && indexB < list.Count)
	{
		T tmp = list[indexA];
		list[indexA] = list[indexB];
		list[indexB] = tmp;
	}
	return list;
}

Simply call it like this

myList.Swap(indexA, indexB);

(C#) Sort lists

Lets say you have a list of person objects (List persons)

You may use Sort to update the existing list.

personsList.Sort((x, y) => string.Compare(x.Name, y.Name));

or OrderBy to produce a new, ordered list.

var newPersonsList = persons.OrderBy(x => x.Name);

(PHP) Simple pagination

Here’s a simple way to paginate when getting large amounts of posts from the database.

Continue reading →

Generate dummy data

Here’s a great tool for generating dummy data for your database etc.
www.generatedata.com

(PHP) Simple gallery with thumbnail generation

This is an enhanced version of this

It’s a VERY simple php gallery. You could develop it in any direction. This one only supports jpg, but that could be augmented as well.
Here’s what it does:

Allows the user to choose an image and enter a title (or caption).
Uploads the image to a folder on the server.
Creates a thumbnail
Enters the filename and caption in a MySQL database.
Output all the images.

Continue reading →

Open weblinks in external browser when using Phonegap

To prevent a Phonegap-wrapped app from opening external links in the apps webview, use javascript to open the link in the external browser.

This works on Android (probably other platforms as well)

<a href="#" data-rel="external" target="_blank" onclick="window.open('http://www.jymden.com', '_system')">Jymden</a>

Convert seconds to days, hours, minutes and seconds

Converting seconds into days, hours, minutes and seconds

int days = secondsTotal / 60 / 60 / 24;
int hours = (secondsTotal / 60 / 60) % 24;
int minutes = (secondsTotal / 60) % 60;
int seconds = secondsTotal % 60;

(C#) Confirmation when closing a form

Add an event handler for Form Closing and use this code. This is a really simple solution.

private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
  if (MessageBox.Show("Are you sure?", "Close application", MessageBoxButtons.YesNo) == DialogResult.Yes)
     e.Cancel = false;
  else
     e.Cancel = true;
}

Simple function to see if a number is Even or Odd.

Sometimes you need to check if a number is even or odd. A simple way to do this is using the modulus operator (the %-sign). It will calculate and return the remainder when dividing a value with another value.

So how do you use that to find out if a number is even or odd?

Continue reading →