Today: Last Day

VirtualBox over Leopard

2009-07-25T11:01:00.003-05:00

I have been using VirtualBox for 4 months so far over Leopard and in my modest appreciation it works excellent. I have three virtualizations: Windows 2003 Server, Windows XP and Ubuntu. I don't have any bad feedback to report you.

Enjoy you too:
http://www.virtualbox.org/

Installation over Mac OSX
Just download it and drag it into your Applications folder

Happy Virtualization
Bntz :)

Iframe inside mojoPortal

2009-07-25T10:33:00.004-05:00

The first thing that I tried when I needed add an Iframe element embeded in UserControl, was add runat="server" attribute, but it throws an error. After the approach below, it works pefect.

HtmlGenericControl ifr = new HtmlGenericControl("iframe");
ifr.Attributes.Add("id","myiframe");
ifr.Attributes.Add("onload","doSomething();");
ifr.Attributes.Add("height","400");
...
PlaceHolder1.Controls.Add(ifr); //the final trick

I read this articles before:
http://www.justskins.com/forums/c-htmlgenericcontrol-90652.html

Happy coding
Btnz :)

Alternative for MS Project for Mac OS

2009-04-25T23:38:00.003-05:00

OpenProj is an alternative to work over Mac OS and with a very similar Microsoft Project features. It's a Open Source, so far this post, it was absolutely free. I recommend this software.

Take a look of it
http://www.osalt.com/project

:)

Saving money on corporate networks

2008-05-15T09:07:00.005-05:00

Using Linux as part of your network, you could implement interesting use cases.

No hard drive/Network boot
You can load a Linux OS on your desktop, without hard drive devices. All programs and utilities are stored on centralized server. If you have old computers you can use them as part of your network again.

Compatibility
You may want to use your Linux Desktop to use Windows based programs, a good approach, is use Remote Desktop (RDP) to access a Windows Server.

Licencing
You cannot pay any money in order to use Linux OS. It doesn't matter how much Desktop your network has, just decide to use and start to save.

How much do you want to save?

Upgrade your Desktop to Ubuntu

2008-05-14T08:32:00.008-05:00

If you want to try Ubuntu without hard disk installation, you could try asking for live CDs, this means Ubuntu will run from a bootable media.

About Ubuntu
Ubuntu is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a web browser, presentation, document and spreadsheet software, instant messaging and much more.

The Ubuntu promise
Ubuntu will always be free of charge, including enterprise releases and security updates. Ubuntu comes with full commercial support from Canonical and hundreds of companies around the world. Ubuntu includes the very best translations and accessibility infrastructure that the free software community has to offer. Ubuntu CDs contain only free software applications; we encourage you to use free and open source software, improve it and pass it on.

Learn more >>
Software Libre, Panama
Ubuntu Community of Panama

Get started with our consultancy, any time feel free to contact us.

See it in action...

Dissecting a Credit Card Number

2008-05-12T15:59:00.004-05:00

In short, a great explanation about credit card number structure and how implement a Java Class Validator with those rules.

I read this article before:
Anatomy of Credit Card Numbers

:D

Panamanian Computer Stores

2008-05-12T15:14:00.020-05:00

These Panamanian sites have cheapest prices and websites with information about devices that you may want to buy.

Check it out
Yoytec Computer
Onde1
Mercado Libre Panama :: Computacion

Expensive Sites
Photura
Panafoto
AudioFoto
Multimax

Optional sites
Directron.com
Econo Systems
Onixstar
Inicio Computer
Tecnisoft Panama
PCImpacto

Enjoy them

:D

Installing Ubuntu 7.10 under Virtual PC 2007

2008-02-05T01:15:00.000-05:00

Very useful article, about this effort.
http://arcanecode.wordpress.com/2007/10/18/installing-ubuntu-710-under-virtual-pc-2007/

Also an explanation about create non Windows virtual machine
http://arcanecode.wordpress.com/2006/09/20/virtual-pc-step-by-step/

Enjoy!

CMapTools Translation

2008-01-07T13:57:00.000-05:00

I have the pleasure to present to you a Beta Project who translates concept maps of CmapTools in different languages.

Online tutorial
Get Started

Try it at
CmapTools Translation

CmapTools
http://cmap.ihmc.us/

Javascript Resources

2007-12-24T23:32:00.000-05:00

Very interesting javascript libraries and reference

Dean Edwards
http://dean.edwards.name/

Javascript Fuscation
http://p2p.wrox.com/topic.asp?TOPIC_ID=32234

Enjoy!

:D

XSLT Resources

2007-11-11T11:22:00.000-05:00

Very interesting XSLT resources.

Reference
http://www.zvon.org/xxl/XSLTreference/Output/index.html
http://www.w3schools.com/xsl/xsl_w3celementref.asp

Recursion
http://www.topxml.com/xsltStylesheets/xslt_recursion.asp

Replace
http://www.thescripts.com/forum/thread87419.html

Enjoy.

Special Characters in QueryString : ASP.NET

2007-11-10T11:05:00.000-05:00

If you need include special characters in your url, use HttpUtility.UrlEncode to do it in accurate way.

I read this before:
http://www.velocityreviews.com/forums/t102194-special-characters-in-query-string.html

Useful Learn English Links

2007-11-10T10:15:00.002-05:00

Excelent learning resources

If you have grammar questions you may check it here:
Dr. Grammar : Frequenty Asked Quetions
English Grammar (fortunecity.com)

These were tips of my friend Luis G. and last one by Jose A., Thank you guys.
http://www.ego4u.com/
http://www.english108.com/
http://www.englisch-hilfen.de/
http://www.answers.com/
http://www.englishpage.com/
http://www.bbc.co.uk/worldservice/learningenglish/

Enjoy them.

Strange delay in compilation : VS2005

2007-11-10T09:50:00.000-05:00

One day, when I working in Team Project and at least 8 projects in it, the compilation delay a lot of time. I did a lot of things, but problem was solved when I remove the references and add them again.

Maybe, Do somebody have another suggestion?

Working with XML Namespaces : NET 2.0

2007-11-05T20:04:00.000-05:00

If your Xml document has a default namespace, you can assign prefix, using
XmlNamespaceManager object.
Look it:

Xml Snippet

<?xml version="1.0" encoding="UTF-8"?>
<data xmlns="http://tempuri.org/" xmlns:dc=http://tempuri.org/1.1/>
<items>
<dc:item>Hello</dc:item>
<dc:item>World</dc:item>
</items>
...

Code Snippet

XmlDocument xdoc = new XmlDocument();
xdoc.Load(@"C:\Bentz\data.xml");
...
XmlNamespaceManager nm = new XmlNamespaceManager(xdoc.NameTable);
nm.AddNamespace("ns", "http://tempuri.org/"); /* Default namespace*/
nm.AddNamespace("dc", "http://tempuri.org/1.1/");
...
//browsing a node
XmlNode xn = xdoc.SelectSingleNode("ns:data/ns:items/dc:item/text()", nm);
...

I read this article before:
http://support.microsoft.com/kb/318545

Good coding.

Language Translation Services

2007-11-05T00:36:00.000-05:00

Some approach around Translation Web Service...

Simple and functional example:

http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:281335

Another links

http://www.eggheadcafe.com/articles/20050725.asp

http://www.codeproject.com/cs/webservices/translation.asp

http://www.restlessdelusions.com/projects/services/translate/translate.asmx

Enjoy.

Free Project Management Resources

2007-11-04T10:57:00.000-05:00

Great links list with free resources for PM.

Look here:

http://ivanrivera-pmp.blogspot.com/search/label/Templates
http://www.vita.virginia.gov/oversight/projects/

That you Mike, :D.

C# to VB.NET, VB.NET to C#; Code Translator : Web Tool

2007-10-02T21:44:00.000-05:00

Gain time changing your samples very quickly with these free code translators:

Try any of them:
http://www.carlosag.net/Tools/CodeTranslator/Default.aspx
http://authors.aspalliance.com/aldotnet/examples/translate.aspx
http://addressof.com/cs2vb/
http://labs.developerfusion.co.uk/convert/vb-to-csharp.aspx

Take care with those "free software" dowloads.

Enjoy.

Trusted WebService : ASP.NET

2007-09-27T20:24:00.000-05:00

When you publish a WebService on IIS with Integrated Security. Maybe you got the following error: "The request failed with HTTP status 401: Access Denied". You need a twice of lines to include the credential of intranet client.

I read this article before:
http://geekswithblogs.net/ranganh/archive/2006/02/21/70212.aspx

That's it.

Detect Page Refresh : ASP.NET

2007-09-18T14:44:00.000-05:00

In ASP.NET after page has done first postback, if the user makes a Refresh, the behavior is repeat the last postback. Let us imagine that we inserted data or we debit of a credit card, etc; one becomes a problem. Therefore one becomes important to handle this eventuality.

In Summary To handle a Session Flag and ViewState Flag, comparing them to know if one is about a Postback or a Refresh. For more details, see these articles.

http://www.codeproject.com/aspnet/Detecting_Refresh.asp
http://www.joel.net/code/refresh_capture.aspx
http://jarednevans.typepad.com/technoblog/2005/01/jareds_techno_b.html

Test it

Session.Abandon() : On browser is closed

2007-09-18T14:31:00.000-05:00

Some times it is necessary to block the access of multiple users to same information. A route to do this is to register the entrance and the exit of the user to the application (DB, Application Object). It happens then that if the user closes browser without closing session in the application for some reason the Session_End does not happen. An alternative is to use the ScriptManager (MS AJAX) and a pair of lines of Javascript to notify the servant when it is closed in browser.

In summary

Subscribe to the OnUnload event of the Body (<body OnUnload="Logout (); ">)
Invoke the Static WebMethod (it will close session) from the function Javascript (PageMethods.AbandonSession ();)
As when sailing to another page also it invokes the OnUnload event, it is necessary to make a last adjustment. All the pages of the application will be sailed from a IFRAME from a Content.aspx page. The trick is, the IFRAME makes navigation to other pages whereas Content.aspx this statics.

I read these articles before:
http://aspalliance.com/520
http://aspalliance.com/1294_CodeSnip_Handle_Browser_Close_Event_on_the_ServerSide
http://www.codeproject.com/csharp/Detect_closing_navigator.asp
http://geeks.ms/blogs/lruiz/archive/2007/02/27/controlar-cuando-el-usuario-nos-cierra-el-navegador-es-posible.aspx
http://www.programmersheaven.com/mb/ASPNET/303808/303808/readmessage.aspx

It works.

Team Explorer on Visual Studio Professional

2007-09-18T13:12:00.000-05:00

It isn't necessary migrate to Visual Studio Team Suite for integrate with Team Server. You only install the Team Explorer in your Visual Studio Professional copy.

Look it...

Hidden Columns with values: asp:GridView

2007-09-18T11:05:00.000-05:00

If you set Column Visible property to false, this column won't rendered. But if you want these values available, What will you do?

My trick was, set HeaderText to empty, convert the BoundField in TemplateField, and use a HiddenField control. The effect the column won't be visible. Also you can use the controls array to access to value property.

<Columns><asp:BoundField DataField="CompanyCode"
HeaderText="Company" SortExpression="CompanyCode" />
...
<Columns>
<asp:TemplateField><ItemTemplate><asp:HiddenField
id="hf1" Value='<%# Bind("CompanyCode") %>'
runat="server"></asp:HiddenField></ItemTemplate>
...
// accesing the value property
int tmpID =
Convert.ToInt32(((HiddenField)GridView1.SelectedRow.Cells[3].Controls[1]).Value);

And run it.

Cached Authentication Issue : Windows Authentication

2007-09-18T10:46:00.000-05:00

My friend Jose Atencio, worked with Web Application managing Windows Roles and Users. After some testing, The changes are applied on client when they log off. While they are logged the changes are not reflected. It seems Windows Authentication information is cached on client at time when user log in.

Don't forget this issue in your testing.

Maybe, Do somebody have a solution?

IsNumeric Method : Regular Expression

2007-09-18T10:25:00.000-05:00

Using int.Parse(expression) method throw an error if expression doesn't numeric; Instead of that, an alternative, is use custom method regular expression based. It returns a boolean value.

public static bool IsNumeric(string theValue){
Regex _isNumber = new
Regex(@"^\d+$");
Match m = _isNumber.Match(theValue);
return
m.Success;}

And run it.