Based on my resent post, I have rewritten the code and turned it in to a custom control:

• It is no longer depending on the Futures CTP.
• If the username isn’t available it’s possible to get suggestions with available names.
• The web service UsernameResult is now returning a class which is automatically JSON serialized by ASP.NET AJAX and passed into JavaScript as a parameter.
• Fully integrated with the asp.net 2.0 membership.

Try out the online demo.

 

How to use the control

Register the control on the page:

<%@ Register TagPrefix="one" Namespace="onesoft.common.controls" %>

Then add the control

Remember to set ControlToTest - just like on a validator control :-). All the other properties has defaults as shown above.

Add a ScriptManager to your page (before the usernameAvailability control) and define a ServiceReferance:

<one:usernameAvailability runat="server" ID="IsAvalible" 
ControlToTest="Username" 
ForeColor="DimGray" 
NotAvailableTextColor="Red" 
AvailableTextColor="CornflowerBlue" 
StartUpTextColor="DimGray" 
AvailableText="{0} is available" 
NotAvailableText="{0} is not available" 
StartUpText="Type a username" 
SuggestionLinkText="Suggest" 
UseSuggestion="true"></one:usernameAvailability> 

The webservice has 2 functions: 

IsAvailable - checking the availability of the current name
suggestAvailable &ndash; returning suggestions for available name.

Remember to include the file UsernameService.asmx to your root and add UsernameService.cs to App_Code.

That's it - now start checking for available usernames.

Try it out with the online demo - type your preferred name, if it's available create the new user and retry with the same name - now try the suggestion link.... ok I know it isn't clever, but it is available usernames ;-)

Download the full sourcecode including the demo.

AJAXUsernameControl.zip (257,01 kb)

I welcome any comments and suggestions.

Enjoy ;-

Henrik