compact-framework

In Windows Mobile, when you open Internet Explorer and type in a URL that your device can't connect to, you are notified of this and prompted to (manually) navigate to the screen where you can actually do something about this as a user (Network Management), like so: alt text http://www.freeimagehosting.net/uploads/d3d95e00d2.gif However, if a .NET Compact Framework application tries to connect to a webservice and the webservice URL is not reachable, the "Cannot Connect" bubble does not appear, and instead the call to the webservice just fails. Sometimes we end up talking customers through this

Is it possible to call Application.Run, but to not pass a form parameter, or is there an alternative if there’s no form to call? The Run method doesn’t seem to have any overloads that don’t accept a form. For example, if I wanted to instantiate a class first, and then have that call the form, is there way to do the equivalent of: Application.Run(myClass); Just to clarify, I do still want the functionality that .Run() provides. That is, establish a loop to keep the application running, but instead of tracking a form, track a class or other object. This is relating to the compact framework

please tell me how to lock file in c# Thanks Simply open it exclusively: using (FileStream fs = File.Open("MyFile.txt", FileMode.Open, FileAccess.Read, FileShare.None)) { // use fs } Ref . Update : In response to comment from poster: According to the online MSDN doco , File.Open is supported in .Net Compact Framework 1.0 and 2.0. FileShare.None would throw a "System.IO.IOException" error if another thread is trying to access the file. You could use some function using try/catch to wait for the file to be released. Example here . Or you could use a lock statement with some "dummy" variable

I've being messing around the C# Bouncy Castle API to find how to do a PBKDF2 key derivation. I am really clueless right now. I tried reading through the Pkcs5S2ParametersGenerator.cs and PBKDF2Params.cs files but i really cant figure out how to do it. According to the research I have done so far, PBKDF2 requires a string (or char[]) which is the password, a salt and an iteration count. So far the most promising and most obvious i've come so far is the PBKDF2Params and Pkcs5S2ParametersGenerator. None of these seems to be accepting a string or a char[]. Has anyone done this in C# or have any

I just started to play with the entity framework, so I decided to connect it to my existing SQL Server CE database. I have a table with an IDENTITY(1, 1) primary key but when I tried to add an entity, I've got the above-mentioned error. From MS Technet artice I learned that SQL Server Compact does not support entities with server-generated keys or values when it is used with the Entity Framework. When using the Entity Framework, an entity’s keys may be marked as server generated. This enables the database to generate a value for the key on insertion or entity creation. Additionally, zero or