/// <summary>
/// Creates a new FormState instance from the form post of the request of the supplied http context.
/// Persists this instance using the
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public static FormState Create(HttpContext context)
{
FormState result = null;
if (context != null && context.Request.Form != null && context.Request.Form.Count != 0)
{
string id = Guid.NewGuid().ToString();
result = new FormState(id, context.Request.Path, context.Request.Form);
_storageProvider.Store(result);
}
return result;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="state">The form state to restore.</param>
public FormStateRestoreHandler(FormState state)
{
_state = state;
}
/// <summary>
/// Puts the supplied FormState into the HttpContext.Items collection. This way it can be accessed from the FormSaverHttpModule.
/// </summary>
/// <param name="context">The current http context.</param>
/// <param name="state">The form state instance.</param>
public static void SetCurrent(HttpContext context, FormState state)
{
if (context != null)
context.Items[FormRestoreKey] = state;
}
/// <summary>
/// Stores the form state using the http cache.
/// </summary>
/// <param name="formState">The form state to store.</param>
public void Store(FormState formState)
{
HttpRuntime.Cache.Add("FormStateSaver_" + formState.StateId, formState, null,
Cache.NoAbsoluteExpiration, StateCacheDuration,
CacheItemPriority.Normal, null);
}