Error while trying to add an object in cache using AppFabric Caching

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AppFabric

cache

I have developed an web application and am trying to store an object in the cache. But, I'm getting an Error: The type initializer for 'Microsoft.ApplicationServer.Caching.DataCacheFactoryConfiguration' threw an exception.

My Code to Add:

public static void AddToCache(string cacheName, string keyName, string objName) {

try
{

DataCacheFactoryConfiguration factoryConfig = new DataCacheFactoryConfiguration();

DataCacheFactory mycacheFactory = new DataCacheFactory();
DataCache = mycacheFactory.GetCache(cacheName);

DataCache.Add(keyName, objName);
}

catch(Exception ex)
{
HttpContext.Current.Response.Write("Error: " + ex.Message);
}

}

Please help frnds.