is it possible to use C# or asp .net web service in webpart is share
point support this services.

I have not started any development yet but it should be possible to consume
a webservice  in a webpart by using the XMLHTTPRequest or (maybe) by using
the webservice.htc.

It is possible to use a web services in a web part. IF you have a web
service returning XML

One easy way to do so is to create a new web part
- Set the type of content to XML
- insert the URL of the web services to Get content from the following link
- Check Use XSL to transform content
- Enter the XSLT transormation code

I can email whoever is intererested a stock quote web part that shows this
example

Thanks for good advice, I will try this, it will also
really helpful for me if u send me stock quote web
part sample, I am also working on this if I will find
something new so I will let u know.

I also am very interested in seeing your stock quote web part... Could you
send it?