Salvo Davide Rapisarda

Viewstate size addons for Firefox

Blackat.NET — Tue, 21 Apr 2009 12:02:00 GMT

It's a great addons for track size of Viewstate for your Web Application.

Link: http://www.kirkov.dk/projects/firefox/viewstatesize

Very helpful for me.

A very good new year...

Blackat.NET — Wed, 07 Jan 2009 22:18:16 GMT

....with a "Catastrophic Failure" error message....

For my fortune the solution was to restart Application Pool.

The Daily WTF - Curious Perversions in IT

Blackat.NET — Tue, 19 Aug 2008 20:20:00 GMT

I'm studing for MCPD exam from the training kit book and I get this link on page 227

http://thedailywtf.com/Articles/Journey_to_the_Center_of_the_Database.aspx

It's a very funny story and a very funny site.

Function Parameter Constraint

Blackat.NET — Wed, 25 Jun 2008 22:01:02 GMT

As a developer every day I find myself in situations where I have to write different methods for purposes of any kind. Generally, I write methods that take into one or more input parameters and return a particular result

Problems arise when my colleagues use the methods that I write. In particular, the biggest problems occur when they are specified in input values that are not valid for the execution of method.

Ok. I know that I can test each parameter before the execution of the real first instruction but it's a very frustration for a developer like me.

I think that can be nicely to have a mode for define at syntax level a constraint for a parameter of a method.

Something like :

<BetweenContraint(i,0,100)> _
Public Function TakeIntegerBetween0And100(ByVal i As Integer)

There is already something like this or I invented the wheel?

I know only looking for on Google or with a comment of some blog reader.

I have got Microsoft Usb Key

Blackat.NET — Sun, 06 Apr 2008 11:50:51 GMT

I have got Microsoft Usb Key during presentation of new Microsoft products in Catania (Sicily - Italy) last 18 March.

It's a 2 GB memory. I tried to use it with Ready Boost feature of Windows Vista but does not work.

I have installed Windows Live Writer

Blackat.NET — Wed, 26 Mar 2008 20:54:41 GMT

Tonight I have intalled Windows Live Writer. It's a great tools for write some posts on my blog.

I promise to me to write some content on next week...:-P

Merry Christmas!!!

Blackat.NET — Sun, 23 Dec 2007 12:37:00 GMT

This Monday I have passed the 70-528 exam

Blackat.NET — Thu, 22 Nov 2007 08:33:00 GMT

Alleluja!!! ^_^

How to clean ID's on HTML output for server control in ASP.NET

Blackat.NET — Fri, 09 Nov 2007 10:08:00 GMT

Problem:

If you have a server control like Label or Image with a long name ID attribute when it's render as html the attribute ID is render on HTML output. If you have a lot of this controls on a web page this can introduce an overhead.

Solution:

The first solution is to remove the ID on control. Like this :

<asp:Label runat="server" Text="Salvo" ></asp:Label>

It work...but you can't use designer with visual studio because visual studio don't know the name of your label.

Then...this is not a good solution .

The second solution is to set ID with nothing (or null for C# programmers) at PreRender stage. Like this :

<asp:Label ID="MyLongIDLabelForName" runat="server" Text="Salvo" OnPreRender="DeleteID"></asp:Label>

This is a good solution. :-)

Prompt Control

Blackat.NET — Mon, 05 Nov 2007 21:06:00 GMT

I have been doing a little experiment with custom control in asp.net. So, I think...what I can do if I have a web page where I can't put a textbox ? Simple, the solution to my problem is the javascript prompt function. So, I'v created a simple control for prompting where a user click a text.

The code of prompt control:

Imports Microsoft.VisualBasic

Namespace Salvo

Public Class PromptControl

Inherits System.Web.UI.WebControls.HyperLink

Implements IPostBackEventHandler

Public Event Prompt(ByVal sender As Object, ByVal e As String)

Public Property Message() As String

Get

Return ViewState("PromptMessage")

End Get

Set(ByVal value As String)

ViewState("PromptMessage") = value

End Set

End Property

Public Sub New()

MyBase.New()

End Sub

Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)

Page.ClientScript.GetPostBackEventReference(Me, "")

Me.Attributes.Add("onclick", "__doPostBack('" & Me.ClientID & "',prompt('" & Message & "'));")

MyBase.Render(writer)

End Sub

Public Sub RaisePostBackEvent(ByVal eventArgument As String) Implements System.Web.UI.IPostBackEventHandler.RaisePostBackEvent

RaiseEvent Prompt(Me, eventArgument)

End Sub

End Class

End Namespace

The code of web page:

<%@ Page Language="VB" %>

<%@ Register Namespace="Salvo" TagPrefix="SA" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Protected Sub AlertMe(ByVal sender As Object, ByVal message As String)

Page.ClientScript.RegisterStartupScript(Me.GetType, "promptMessage", "alert('What you have typed in prompt is " & message & "');", True)

End Sub

</script>

</head>

<body>

<div>

<SA:PromptControl runat="server" ID="A" Text="Prompt me" Message="Input what you want!" OnPrompt="AlertMe" ></SA:PromptControl>

</div>

</form>

</body>

</html>

Web Developer's Handbook

Blackat.NET — Sat, 03 Nov 2007 13:19:00 GMT

If you are a web programmer the follow link can help you when it's time to design your web application.

http://www.alvit.de/handbook/

You can find a collection of links about CSS, JavaSript, Accessibility, ecc...

For me it's very very helpful.

My first blog!!

Blackat.NET — Fri, 02 Nov 2007 07:42:00 GMT

Aaaaahhhhh!!! I'm really happy to write my first blog post!!

Thanks to Joe Stagner!!! ^_^

And now at work!!!