hongmeig's WebLog

There is a cool WCF feature instroduced in dev10 called configless activation. You don't have to have a *.svc file in your web directory, instead you can activate a WCF service using the following configuration element: < system.serviceModel...

The default value of MaxReceiveMessageSize in WCF is 65,536. When you choose streaming as TransferMode, WCF runtime will create 8192 as buffer size. So what happened now is that WCF channel stack will read the first 8192 bytes, and decode the first couple...

There are a lot of timeouts in WCF. let us summarize it here. Timeouts on binding These are the most well known timeouts. SendTimeout, ReceiveTimeout, OpenTimeout and CloseTimeout. They can be set easily either through config or code on the Binding...

Missing a trailing slash is a common error people make when browsing the web. For better usability, in 4.0, we introduced a feature called autoredirect. It is on by default, meaning, when you set up your REST service to take something like "test/", when...

You are getting this error because the default WCF stream formatter does not support this. You are probably trying to upload some file stream and transfer some other parameters, such as file name, etc within the same method. For example, [OperationContract...

Let us say i want to connect my laptop to my office machine, which uses dual monitors. I can see some of the windows icons showing up in the taskbar, but i cannot see the window. How can I click any button on that window? Here is the solution: Right...

If you happen to get the following sql error: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005 or above, this failure may be caused by the fact that under the default settings SQL Server does...

1920 X 1200 is the resolution you wanted for the 24" monitor. The old 1600 X 1200 would make everything looks flattened. So what if my highest resolution is 1600 X 1200? The solution is that you need to update your new driver. Here is how you can do it...

If you are getting an error like : Cannot resolve KeyInfo for unwrapping key: KeyInfo 'SecurityKeyIdentifier and your have checked that your certificate is in the right store and right place. So this might be the reason. check the binding you have...

I am going to attend Tech Ed China 2007 again. I am very excited about it. http://www.microsoft.com/china/technet/teched/speakers/default.mspx

There are two options: 1. OperationContext.Current. Pros: This is pretty straightforward and relatively hard to discover. Cons: This is a thread local storage, and you are invoking a async call, it does not work well. 2. ChannelParameterCollection...

If you are getting the following error: “Generating user instances in SQL Server is disabled. Use sp_configure 'user instances enabled' to generate user instances” What should I do? Answer : To fix this, please Open the SQL Server Management...

First let me explain why it does not work. There are three string comparisons done by card space. The information card has Issuer, IssuerEndpointAddress, and IssuerMexAddress. When you hit a web site which requires an information card, in other...

By default findstr does the comparison with regular expression. However, what surprised me is that the following command does not work. findstr "abc|def" test.txt when test.txt has only abc in it. According to the online tutorial such as http...

There are three steps you need to take to make it work. 1. Modify your hosts file under \Windows\System32\drivers\etc\hosts and add the following entry: 127.0.0.1 mydomain.com 2. Turn off your proxy dection from the IE, Go to Tools->Internet...

In IIS 6, you can start the IIS manager by typing the inetmgr at the Start->Run windows, and click on the web site, Right click on the web site, go to the directory security, you will have windows authentication check box to click. In IIS 7, it...

You need to make sure that your personal card contains the required claim types you specified in your client binding. To fix this, try set the required claim types to one of the claims that your personal card has. WSFederationHttpBinding binding =...

One possibility is that your binding does not contains required claim types. In your client binding, make sure you have at least one required claims: WSFederationHttpBinding binding = new WSFederationHttpBinding ( WSFederationHttpSecurityMode .Message...

The common error that users will run into for the personal card scenario is that the WCF service cannot verify the signing credentials of the saml token. This is because the personal card will trigger the card space runtime to issue a saml token signed...

If you are using Https, this might fix it. ServicePointManager .ServerCertificateValidationCallback = RemoteCertificateValidationCallback; public static bool RemoteCertificateValidationCallback( object sender, X509Certificate certificate,...

First you need to download some windows sdk tools. You can get those from http://www.microsoft.com/downloads/details.aspx?FamilyId=C2B1E300-F358-4523-B479-F53D234CDCCF&displaylang=en . Only check the tools section to save you some time. The tools...

I kept getting " your temp directory is read only" error when i tried to install Adobe Reader 8.0 on my new Vista box. Here is the suggestions i got from my friend and it actually works! 1. Right click on your Acrobat install executable -> Select...

After migrating to IE 7, if you are getting some error like: A dialog box pops up saying “Logging Exception: Safety settings on this computer prohibit accessing a data source on another domain” This might solve it: Tools – Internet Options...

It took me a while to find it. It is that logo that you need to click, which will pop up the usual stuffs from the previous File menu. Note it is the mouse click, not the right click!

What could go wrong when cardspace UI is not popping up? You can see if you have card space UI working properly on your box by go to Control Panel->Windows CardSpace. The correct behavior is that your window will grey out, and a highlighted window...