Fba roles with SharePoint user groups - sharepoint

Question

I have built custom Membership and Role providers. Users are some clients that belong to the company and I am using Company as a Role.
I would like to create SharePoint Group and add more companies to it (for example type of industry) and then do redirecting and security by the SPGroup.
How do I retrieve SPGroup for the current logged in user ?
I would like to this in my custom Login page so another problem is how do I retrieve SPUser or SPGroup knowing login name ?
This is what I have now:
private List GetGroupsForUser(List roleAccounts)
{
List groups = new List();
SPSecurity.RunWithElevatedPrivileges(
delegate()
{
using (SPSite site = new SPSite(SPContext.Current.Web.Site.ID))
{
SPUserCollection users = site.RootWeb.SiteUsers;
foreach (string account in roleAccounts)
{
SPGroupCollection accGroups = users[account].Groups;
foreach (SPGroup spg in groups)
{
groups.Add(spg);
}
}
}
}
);
return groups;
}
private string GetRoleManagerName()
{
foreach (KeyValuePair setting in SPContext.Current.Site.WebApplication.IisSettings)
{
if (string.IsNullOrEmpty(setting.Value.RoleManager) == false)
return setting.Value.RoleManager.ToLower();
}
return null;
}
private List GetSpAccounts()
{
List roleAccounts = new List();
string roleProviderName = GetRoleManagerName();
foreach (string role in Roles.GetRolesForUser(login.UserName))
{
roleAccounts.Add(roleProviderName + ":" + role.ToLower());
}
return roleAccounts;
}
// and now I can use it
List roleAccounts = GetSpAccounts();
List groups = GetGroupsForUser(roleAccounts);
But I have a felling that I should not have to do this manually like this. How will Target Audience work if only role is added to the group ?

Answer 1

Use the OwnedGroups property of the SPUser class to return the collection of groups owned by a user.
Update misunderstood the question:
Get the currently logged in user: SPContext.Current.Web.CurrentUser
Add that use to a group: SPGroup.Users.Add([username],[email],[name],[notes]);
Update, third times the charm. So you want to find out what group the user is in based on the roles they have?
It's a bit of a combination of the above two attempts at answering it:
var matched = from r in SPContext.Current.Web.CurrentUser.Roles
where r.Name = [Role]
select r.Groups;
Important note that the Roles property won't work in the next version of SharePoint!
Personally I think SPContext.Current.Web.CurrentUser.Groups would be an easier way to figure out what groups the user is in, but it ignores your role requirementment.