hi
I have created the following code to handle document library email received event handling



public override void EmailReceived(SPList list, SPEmailMessage emailMessage, string receiverData)
{

SPSecurity.RunWithElevatedPrivileges(delegate()
{
try
{


//Declaration Of Variables.
string strTo = ""; string strSubject = ""; string strBody = ""; string strCC = ""; string strFrom = ""; string strCreatedBy = ""; string strImportance = "";
base.EmailReceived(list, emailMessage, receiverData);
SPView view = list.DefaultView;
//Getting MailMessage Values In String Variables.
strSubject = emailMessage.Headers["Subject"].ToString();
strBody = emailMessage.HtmlBody.ToString();
strTo = emailMessage.Headers["To"].ToString();
strFrom = emailMessage.EnvelopeSender.ToString();
strCreatedBy = emailMessage.Headers["From"].ToString();
if (emailMessage.Headers["CC"] != null)
{ strCC = emailMessage.Headers["CC"].ToString(); }
if (emailMessage.Headers["Importance"] != null)
{ strImportance = emailMessage.Headers["Importance"].ToString(); }

SPListItem oListItem = list.Items.Add();
if (!list.Fields.ContainsField("Priority"))
{
list.Fields.Add("Priority", SPFieldType.Text, true);
view.ViewFields.Add("Priority");
view.Update();
}

oListItem["Title"] = strSubject;
oListItem["E-Mail To"] = strTo;
oListItem["E-Mail From"] = strFrom;
oListItem["Body"] = strBody;
oListItem["Priority"] = strImportance;
oListItem.Update();

//Get the Message Stream to save it as .eml.
byte[] content = null;
string strPath = "c:\\SharePointMailDrop\\";

using (Stream objMessageStream = emailMessage.GetMessageStream())
{
content = new byte[objMessageStream.Length];
objMessageStream.Read(content, 0, (int)objMessageStream.Length);
objMessageStream.Close();

if (!Directory.Exists(strPath))
{
Directory.CreateDirectory(strPath);
}

using (FileStream messageFileStream = new FileStream(strPath + strSubject +".eml", FileMode.Create))
{
messageFileStream.Write(content, 0, content.Length);
list.RootFolder.Files.Add(strSubject +".eml", messageFileStream);
messageFileStream.Close();

}


}




}
catch (System.Exception ex)
{
SPUtility.TransferToErrorPage(ex.Message.ToString());
}
});




in this code oListItem.Update(); is giving me error use SPFileCollection.Add to add a doc to doc library.
What could be the problem

}