How do I pass username and password to an httpWebRequest in silverlight 4

How do I pass username and password to an HttpWebRequest in Silverlight 4.

since the HttpWebRequst class in silverlight does not implement 开发者_StackOverflow中文版Credentials property, therefore i am unable to authenticate my user.

one way I found was, to pass credentials in header using Authorization header, but it requires ASCII encoded value, which is not supported in Silverlight.

any other alternatives???

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Perhaps you should just try it. All http headers are by specification ASCII. Hence the fact that HttpWebRequest supports a Headers collection that accepts a string for a header value implies that the string will be converted appropriately when sent in a HTTP session.

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thanks, I got the solution, I had to write following line before creating the WebRequest object. :)

WebRequest.RegisterPrefix("http://":, WebRequestCreator.ClientHttp);