I want to develop a web application that will have textbox and button. when user entered a number and click on submit button i want to make a skype call from host. Can any one help me.. how to do this?
Er... you're in for a world of pain. First, sure, your server could possibly make a skype call, but how would you handle the back-and-forth to your user's browser? Tons of custom programming with a rich client framework, that's how.
Better to let the user just use skype themselves. Look into the callto://
URI header for details.
Can't you setup your links with callto:// prefixes? If the user has the option enabled in Skype then the application will be associated with those links.
How to Use the Skype Callto:// Links
Perhaps you could build a link on the fly and initiate a call this way?
You can generate a link with HTML with a callto: address to launch the Skype client and make the call (if the client software is configured to do so), which is hopefully what you're looking for. See: http://chrisabraham.com/2005/05/05/how-to-hyperlink-to-a-skype-call-with-your-skype-contact-id-or-telephone-number/
If you want to actually get into the API, you'll need some kind of desktop C# application and interface with the Skype API, see following for details:
http://share.skype.com/sites/devzone/2006/12/c_example_project_for_skype4co.html
So lets say you did launch a process on the server and automate the skype client on the web server. It then dials your customer via a phone located in the data center and the customer hears .... what? IIS isn't very talkative.