Load ProfileBase without HTTP Context - asp.net

Question

I'm in the process of converting user profile data that was serialized in the classic ASP.Net Membership Provider for use in SimpleMembership. I cannot figure out how to get the ProfileBase object for every user in the system.
If a specific user is logged in, I can do something like:
MyModel myModel =
(MyModel)HttpContext.Current.Profile.GetPropertyValue("MyKey");
where MyKey refers to a profile key established in web.config like this:
<add name="MyModel" type="MyNS.MyModel" serializeAs="Binary" />
However, without the benefit of an HTTP context (I'm trying to do this for all users in the system, not a logged-in user) I can't figure out how to load the profile and ultimately an instance of MyModel for each user in the system.
I have tried:
ProfileInfoCollection profiles =
ProfileManager.GetAllProfiles(ProfileAuthenticationOption.All);
foreach (var profile in profiles)
{
var pi = (ProfileBase)profile;
// OOPS! Unfortunately GetAllProfiles returns
// ProfileInfo and not ProfileCommon or ProfileBase
}
and
MembershipUserCollection existingUsers = Membership.GetAllUsers();
foreach (MembershipUser mu in existingUsers)
{
mu. // OOPS! No link to the profile from the user...
}
How can I retrieve the ProfileCommon or ProfileBase instance for each profile in the system, and thus ultimately the MyModel associated with each user?

Answer 1

Since I could not find an answer to this question, I opted to just read the profile data directly from SQL.
It turns out that the format is straightforward. In aspnet_Profile:
PropertyNames uses a format NameOfProperty:TypeFlag:Offset:Length (repeat for all properties).
FlagType is "S" for string or "B" for binary
Offset is the offset in the appropriate data field
Length is the length of data in the appropriate data field
PropertyValuesString holds all string properties concatenated without a delimiter.
PropertyValuesBinary holds all binary properties concatenated without a delimiter.
BinaryFormatter is used to serialize binary (non-string) properties
Here's a little code I wrote to parse the data:
private class Migrate_PropNames
{
public string Name { get; set; }
public bool IsString { get; set; }
public int Offset { get; set; }
public int Length { get; set; }
}
....
Dictionary<string, Migrate_PropNames> propInfo = ParsePropInfo(propertyNames);
// Example string property
string firstName = Migrate_GetString(propInfo["FirstName"], propertyValuesString);
// Example binary property
MyType myType =
Migrate_GetBinary<MyType>(propInfo["MyTypeKey"], propertyValuesBinary));
private T Migrate_GetBinary<T>(Migrate_PropNames propNames, byte[] propertyValuesBinary)
{
byte[] data = new byte[propNames.Length];
Array.Copy(propertyValuesBinary, propNames.Offset, data, 0, propNames.Length);
var fmt = new BinaryFormatter();
using (var ms = new MemoryStream(data))
{
T original = (T)fmt.Deserialize(ms);
return original;
}
}
private string Migrate_GetString(Migrate_PropNames propNames, string propertyNames)
{
return propertyNames.Substring(propNames.Offset, propNames.Length);
}
private Dictionary<string, Migrate_PropNames> ParsePropInfo(string propertyNames)
{
Dictionary<string, Migrate_PropNames> result = new Dictionary<string,Migrate_PropNames>();
string[] parts = propertyNames.Split(new string[] { ":"}, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < parts.Length; i += 4)
{
Migrate_PropNames pn = new Migrate_PropNames();
pn.Name = parts[i];
pn.IsString = (parts[i + 1] == "S");
pn.Offset = int.Parse(parts[i + 2]);
pn.Length = int.Parse(parts[i + 3]);
result.Add(pn.Name, pn);
}
return result;
}
I hope this helps someone. I'll gladly accept a different answer that correctly shows how to use the API.

Answer 2

From the ProfileInfo or MemberShipUser object, you should can get a ProfileBase one using ProfileBase.Create(string username).