c#

Is it possible to toggle Validation Data Annotations on/off in MVC 3?

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I have two separate VIEWS accessing the same MODEL. When I put the validator data annotations on the model, it works as advertised and prevents the data from being submitted (for both views) if left blank or not within range. However, I have one view that should be able to allow empty or null values to be saved for a property whereas another view needs to require information to be entered or selected before it lets it through. In other words, I’d like to turn off the validator on the property within the MODEL for one view and leave it on for the other view. Here’s the example code:

How do I programatically create an exchange 2010 mailbox using C#

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I have been given a task to write a program to automatically create a 2010 exchange mailbox. My research tells me to use powershell but I can’t seem to find the namespace to reference and would like some sample code. I found some code on the web but I don’t know what the namespace is for PowerShell. I think it might be System.Management.Automation but when I try to reference the namespace it does not exist in the list of dotnet. All I have is System.Management and System.Management.Instrumentation.

Where does HttpRuntime.Cache stores data?

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I am trying to implement a web application with Caching features.The reason I need caching is for is that we have an application which lets users access online courses. Now, Once the user logs in I validate him against our database. Once validated I want to store the user ID and course ID in cache for 20 mins so that if he requests it again I can retrieve values from cache foe both user id and course ID and if valid provide him access
For some reasons I can’t use Session variables in this application so they are not an option.