public override SettingsPropertyValueCollection GetPropertyValues(SettingsContext context,
SettingsPropertyCollection collection)
{
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
SettingsPropertyValueCollection settings = new SettingsPropertyValueCollection();
// Do nothing if there are no properties to retrieve
if (collection.Count < 1)
{
return(settings);
}
// For properties lacking an explicit SerializeAs setting, set
// SerializeAs to String for strings and primitives, and XML
// for everything else
foreach (SettingsProperty property in collection)
{
if (property.SerializeAs == SettingsSerializeAs.ProviderSpecific)
{
if (property.PropertyType.IsPrimitive || property.PropertyType == typeof(String))
{
property.SerializeAs = SettingsSerializeAs.String;
}
else
{
property.SerializeAs = SettingsSerializeAs.Xml;
}
}
settings.Add(new SettingsPropertyValue(property));
}
// Get the user name or anonymous user ID
string username = (string)context["UserName"];
if (string.IsNullOrEmpty(username))
{
return(settings);
}
if (!VerifyUsername(ref username))
{
return(settings);
}
MembershipRow profile = null;
if (!DoesProfileExistAndUpdateUser(username, out profile))
{
// the profile does not exist
// we update the last activity time of the user only if the profile does exist
// so we can just return here
return(settings);
}
Debug.Assert(profile != null);
// We are ready to go: load the profile
// Note that we do not have to deal with write locks here because we use a
// different blob name each time we write a new profile
StreamReader reader = null;
MemoryStream stream = null;
sqlBlobProperties blobProperties;
string[] names;
string values;
byte[] buf = null;
string line;
try
{
// Open the blob containing the profile data
stream = new MemoryStream();
if (!_blobProvider.GetBlobContentsWithoutInitialization(profile.ProfileBlobName, stream, out blobProperties) || blobProperties.Length == 0)
{
// not an error if the blob does not exist
return(settings);
}
stream.Seek(0, SeekOrigin.Begin);
reader = new StreamReader(stream);
// Read names, values, and buf from the blob
line = reader.ReadLine();
names = line.Split(':');
values = reader.ReadLine();
if (!string.IsNullOrEmpty(values))
{
UnicodeEncoding encoding = new UnicodeEncoding();
values = encoding.GetString(Convert.FromBase64String(values));
}
string temp = reader.ReadLine();
if (!String.IsNullOrEmpty(temp))
{
buf = Convert.FromBase64String(temp);
}
else
{
buf = new byte[0];
}
}
catch (InvalidOperationException se)
{
throw new ProviderException("Error accessing blob storage when getting property values!", se);
}
catch (Exception e)
{
throw new ProviderException("Error getting property values.", e);
}
finally
{
if (reader != null)
{
reader.Close();
}
if (stream != null)
{
stream.Close();
}
}
// Decode names, values, and buf and initialize the
// SettingsPropertyValueCollection returned to the caller
DecodeProfileData(names, values, buf, settings);
return(settings);
}
