Silverlight 4.0 - HttpWebRequest throwing ProtocolViolationException.

Posted by cmaduro on Stack Overflow See other posts from Stack Overflow or by cmaduro
Published on 2010-06-01T20:52:18Z Indexed on 2010/06/01 20:53 UTC
Read the original article Hit count: 513

Filed under:

httpwebrequest

|

silverlight-4.0

|

get

I am getting a "System.Net.ProtocolViolationException: Operation is not valid due to the current state of the object." error when trying to call

 var request = (HttpWebRequest)WebRequest.Create(uri);

 request.Method = "GET";

 request.ContentType = "text/xml";

 request.BeginGetRequestStream(RequestCompleted, request);

© Stack Overflow or respective owner

Related posts about httpwebrequest

Upload files with HTTPWebrequest (multipart/form-data)

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there any class, library or some piece of code which will help me to upload files with HTTPWebrequest? Edit 2: I do not want to upload to a WebDAV folder or something like that. I want to simulate a browser, so just like you upload your avatar to a forum or upload a file via form in a web application… >>> More
HttpWebRequest gives a SocketException with error code 10050

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everybody I'm pulling my hairs off since two days now because I'm trying to download an image from a website using HttpWebRequest. When I call the method "GetResponse" of that class, I get the WebException "Unable to connect to the remote server.". The inner exception is "A socket operation encountered… >>> More
HttpWebRequest to different IP than the domain resolves to

as seen on Stack Overflow - Search for 'Stack Overflow'
Hey, Long story short an API I'm calling's different environments (dev/staging/uat/live) is set up by putting a host-record on the server so the live domain resolves to their other server in for the HTTP request. The problem is that they've done this with so many different environments that we don't… >>> More
How to save webpage to string with cookies support (httpWebRequest)

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to read webpage and store its content in string for further processing. Sounds simply but I have problem with cookies support. Opened page says I need browser supporting cookies (or turned on). I've made method trying do that via httpWebRequest - which normally works to me but I've come to… >>> More
WebClient vs. HttpWebRequest/HttpWebResponse

as seen on Stack Overflow - Search for 'Stack Overflow'
It seems to me that most of what can be accomplished with HttpWebRequest/Response can also be accomplished with the WebClient class. I read somewhere that WebClient is a high-level wrapper for WebRequest/Response. So far, I can't see anything that can be accomplished with HttpWebRequest/Response that… >>> More

Related posts about silverlight-4.0

Silverlight 4 Released

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
The final release of Silverlight 4 is now available. What is in the Silverlight 4 Release Silverlight 4 contains a ton of new features and capabilities. In particular we focused on three scenarios with this release: Further enhancing media support Building great business… >>> More
Performance of Silverlight Datagrid in Silverlight 3 vs Silverlight 4 on a mac

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using Silverlight Beta 4 for a LOB application. After finding out today that I'll have to wait perhaps 4 months to be able to develop with SL4 on Visual Studio 2010 I'm thinking I need to downgrade my application to SL3 but thats another question. The problem is I'm noticing absolutely abismal… >>> More
Silverlight TV 15: Announcing Silverlight 4 RC at MIX 10

as seen on Dot net Slackers - Search for 'Dot net Slackers'
John and Adam discuss Silverlight 4 RC, following up the MIX10 keynote announcement of Silverlight 4 RC by discussing what is new and what materials have been released on the Channel 9 learning center website. They cover their picks for some of the most impactful features in Silverlight 4 RC… >>> More
Silverlight TV 14: Developing for Windows Phone 7 with Silverlight

as seen on Dot net Slackers - Search for 'Dot net Slackers'
Silverlight TV is here at MIX10 where Windows Phone 7 (WP7) and Silverlight just became the best match since peanut butter and chocolate! Mike Harsh, Program Manager for the Silverlight team working on WP7, joins John Papa to demonstrate the WP7 device and the tooling used to create applications for… >>> More
Silverlight Commands Hacks: Passing EventArgs as CommandParameter to DelegateCommand triggered by Ev

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Today I've tried to find a way how to pass EventArgs as CommandParameter to DelegateCommand triggered by EventTrigger. By reverse engineering of default InvokeCommandAction I find that blend team just ignores event args.To resolve this issue I have created my own action for triggering delegate commands… >>> More