How to detect limited access role type in SPRoleDefinition?

Question

I need to know how to detect the limited access role, when looping through role definitions for a list item.

Item in code below is a listitem, using object model (c#).

Code so far is:

SPRoleAssignmentCollection roles = item.RoleAssignments;
foreach (SPRoleAssignment role in roles)
    {
        SPRoleDefinitionBindingCollection rbc = role.RoleDefinitionBindings;
       foreach (SPRoleDefinition rdef in rbc)
        {
          RoleAssignment.RoleDefinitionBindings.Add(rdef);
        Log("Adding role definition : Name(" + rdef.Name + ") Type(" + rdef.Type + ")");
        }
    }

problem is the RoleDefinition.Type enum does not have a limited property, so how can I check if the permission is limited / restricted access?

Answer 1

If you want to check if it has limited access, you can use this code:

SPRoleDefinition limitedAccessRole = SPContext.Current.Web.RoleDefinitions["Limited Access"];
foreach (SPRoleAssignment roleAssignment in item.RoleAssignments)
{
    if (roleAssignment.RoleDefinitionBindings.Contains(limitedAccessRole))
    {
        // Your limited access
    }
}  

Answer 2

To get a role definition without any localization issues and without hard coding use the SPRoleType enum:

Example:

if (roleAssignment.RoleDefinitionBindings.Contains(SPContext.Current.Web.RoleDefinitions.GetByType(SPRoleType.Guest)))
{
    // Do something
}

In German the name of the role is "Beschränkter Zugriff", but in English this is called "Limited access". Hardcoding the name of the role would not work in a multi-language environment.