Tag Archives: project

GMap.NET component : Moving Marker

WTH is GMap.NET?

Simply put: it’s an open source .net component that can show online mapping service (such as Google Map, Bing Map, OpenStreetMap) in your .NET app.
Download the binary here: http://greatmaps.codeplex.com/
Extract it. You’ll get the .net 2.0 and .net 4.0 version, since I’m using VS 2015, we’ll use the .net 4.0 version.

What will we do now is about how to move a marker inside the map (for tracking/visualizing object movement, etc). We’ll just move the marker randomly in this tutorial.

  • Create new VB Windows Form project
  • Add GMap.NET component into your project reference
GMap.NET component reference

GMap.NET component reference

  • Add GMap.NET component into your toolbar.
Add GMap.NET component step 1

Add GMap.NET component step 1

Add GMap.NET component step 2

Add GMap.NET component step 2

  • Now drag and drop the GMap.NET control into your Form, I name it myMap
  • We’ll also add another controls: 1 Button (name: btnMove), 1 Timer (name: tmr1), 1 Label (name: lblInfo)
List of components

List of components

I also add new bitmap resource into our project properties. This will be used as our marker symbol.

Resource for marker symbol

Resource for marker symbol

You can see the Form’s full source code at the bottom of this post. I’ll just point out some important parts:

  • Map initialization is on Form1_Load event code (zoom level, initial position, provider used, marker type, etc)
  • When you click on the btnMove, it’ll start generating new random position for our marker. The random change is happened in the timer event (tmr1_Tick)
  • The process to update the map visual is delegated into function update_map(), so it will run in different thread and the form still responsive
  • In this tutorial, we are using BingSatelliteMapProvider, you can use another provider such as GoogleMapProvider or OviSatelliteMapProvider. Just see MapProviders namespace to see all supported providers.

Running the app

Running the app

Here’s the full source code:

Windows Installer Cleaner

Some background:

My SSD drive is almost full, after checking with TreeSize Free, it seems a lot of space is taken by files inside c:\windows\installer\. Searching around, I conclude that some of files is safe to be deleted from that particular place. There is a VB script inΒ http://blogs.msdn.com/b/heaths/archive/2007/01/31/how-to-safely-delete-orphaned-patches.aspx that detect which files that shouldn’t be deleted from c:\windows\installer.

I also know an application named WiCleanup from KZTechs that detect and delete the “safe” files but after I tried it, the confirmation of deletion for files one-by-one makes me uncomfortable. So, I decide, why not programming the application by myself? And this application is born!


I programmed the application in VB .NET language using the free Microsoft Visual Studio 2013 Community Edition. Without further a do, you can download the application here:

[button link=”http://www.ahowto.net/wp-content/uploads/2015/03/Release.zip”]Windows Installer Cleaner Binary Only[/button]
(Of course you need .NET framework 4.5 installed if you want to run this application)
[button link=”http://www.ahowto.net/wp-content/uploads/2015/03/wic_winform.zip”]Windows Installer Cleaner Full Source Code[/button]

How to use:

It’s quite straight forward. There are three buttons there, you just need to click on them sequentially.

  1. Click “Get Kept List” to see which files that you should keep on c:\windows\installer
  2. Click “Get Delete List” to get the files that should be safe to be deleted and their size.
  3. Click “Delete Files” to delete the detected files.

What I learn from building this application:

  • how to create .NET application that need Administrator privilege (UAC things) when executed
  • how to use COM object in .NET application
  • how to use/import .dll from MS Windows in .NET
  • some file operation in .NET (FileInfo, deleting files, file’s attribute)
Windows Installer Cleaner Screenshot in Windows 7 64-bit

Windows Installer Cleaner Screenshot in Windows 7 64-bit

The application is already tested on Windows 8.1 64-bit and Windows 7 SP1 64-bit. Both systems is running fine until now. πŸ˜€


So, I’ve come to a place(=network) where you can’t access Adf.ly website. I download TV shows a lot, since a lot of TV shows download link is masked/hidden with adf.ly service, I can’t access the real download page because it isn’t redirected properly. Finally I decided to create a PHP script that decode this adf.ly URL into it’s real URL.
Here’s the final result (I know it’s ugly, but it works.. πŸ˜› ):

Although the site is created using PHP, I will not share the script. Why? Because a lot of webmasters (including me) gaining revenue from adf.ly, I don’t want this kind of script kill those revenue source. It’s for personal use only.

Script to check if a domain is banned from Adsense program or not

I want to create this kind of script for a long time a go, inspired by Digitalpoint Adsense sandbox tool. Since I have quite a free time now, I decided to do some little research on how to create an Adsense sandbox script. Supposedly to check whether a domain is banned from Google Adsense program or not. After a little research (trial and error), actually this kind of script is not so hard to implement (i.e. once you know the correct URL to call πŸ˜› ).

So, here I create another PHP library that will check whether a domain (the domain name, not the user Adsense account)Β  is banned or not. Here’s the full library source code:

It’s a very basic PHP code without regular expression with a little cURL added. I’m sure you can improve it. πŸ˜€

How to use it:

The function will return an array of possible advertisers for the input URL. If the domain is banned, the function will return TRUE, if not banned, it will return an array.

Example array of advertisers result:

Fully working demo can be tested here: http://demo.ahowto.net/adsense_lib/
check if domain is banned by adsense

Close enough to Digitalpoint Adsense Sandbox tool.. πŸ˜›

Script to check the last date when Bing.com bot is indexing your site

On previous post, I create PHP script to check how many pages from your site is indexed in Bing.com search engine as part of fixing my old SEO statistic checker library. Now, we will check recent date where Bing.com search engine bot indexing your site. We will use scraping technique again, so, we can save our Azure Datamarket quota. How’s this useful for you? Well, it measured how much love Bing.com gave to your site.. πŸ˜›

bing.com bot query

Without more talk, here’s the full PHP source code:

Same as before, no fancy coding here. You can improve the data processing by using regular expression. You may ask, why we need to create our own file_get_contents as helper function, PHP already had one? You got it, we can use built-in file_get_contents function if we want. The reason why I create our own file_get_contents is to fool Search Engine that our query is legit and look natural (you know, we are doing illegal thing here –scraping search engine result– πŸ‘Ώ ). The other thing is that cURL has so many options that easily been set to our purpose (sure you can create stream context for built-in file_get_contents but is not that easy to understand to create it) .

How to use it:

Example result:

Fully working demo can be tested on: http://www.vrank.org/ on “Bing.com Bot” section.
As you can see, Bing.com bot is not really accurate. It only mention the date, Googlebot has more detailed info such as the time. Remember that the result might be different depending on your server location (where you run the script).