How to obtain the HttpContext in Event Handler

Question

I’m trying to obtain the HTTPContext within an Event Handler in a Document Library in MOSS, but all I have is a null value of the HTTPContext.Current, I do the same thing on a L

Answer 1

I faced the same issue when I was trying to update some custom fields of my document library when uploading new documents, the field was (ProjectID) which I put it inside a session in my webpart (the step before uploading the document).

What I did is: I put the projectID into the cache (per user) inside the custom webpart which acts as a session as follows:

if (Request.QueryString["ProjectID"] != null)
{
     HttpRuntime.Cache.Remove(SPContext.Current.Web.CurrentUser.LoginName);
     HttpRuntime.Cache.Add(SPContext.Current.Web.CurrentUser.LoginName,
                           ProjectID, null, DateTime.UtcNow.AddMinutes(60),
                           System.Web.Caching.Cache.NoSlidingExpiration,
                           System.Web.Caching.CacheItemPriority.Normal, null);
}

Then I implemented the ItemAdded event and I get the value of the cached projectId through:

public override void ItemAdded(SPItemEventProperties properties)
{
    try
    {
        string ProjID = "";

        string CreatedBy = null;
        if (properties.ListItem["Created By"] != null)
            CreatedBy = properties.ListItem["Created By"].ToString().Split(';')[1].Replace("#","");

        if (HttpRuntime.Cache[CreatedBy] != null)
        {  
            //SPContext.Current.Web.CurrentUser.LoginName;
            ProjID = HttpRuntime.Cache[CreatedBy].ToString();

            if (properties.ListItem["Project"] == null)
            {
                properties.ListItem["Project"] = new SPFieldLookupValue(ProjID);
                properties.ListItem.SystemUpdate();
            }

            base.ItemAdded(properties);
        }
    }
    catch (Exception ex)
    { }
}