Overload that takes a single descriptor.
Read identity for given descriptor. First try IMS store. If not found, optionally try source like AD.
Note - performance will be fastest when no membership information is requested.
Namespace:  Microsoft.TeamFoundation.Framework.Client
Assembly:  Microsoft.TeamFoundation.Client (in Microsoft.TeamFoundation.Client.dll)
Syntax
'Declaration
Function ReadIdentity ( _
    descriptor As IdentityDescriptor, _
    queryMembership As MembershipQuery, _
    readOptions As ReadIdentityOptions _
) As TeamFoundationIdentity
TeamFoundationIdentity ReadIdentity(
    IdentityDescriptor descriptor,
    MembershipQuery queryMembership,
    ReadIdentityOptions readOptions
)
TeamFoundationIdentity^ ReadIdentity(
    IdentityDescriptor^ descriptor, 
    MembershipQuery queryMembership, 
    ReadIdentityOptions readOptions
)
abstract ReadIdentity : 
        descriptor:IdentityDescriptor * 
        queryMembership:MembershipQuery * 
        readOptions:ReadIdentityOptions -> TeamFoundationIdentity
function ReadIdentity(
    descriptor : IdentityDescriptor, 
    queryMembership : MembershipQuery, 
    readOptions : ReadIdentityOptions
) : TeamFoundationIdentity
Parameters
- descriptor 
 Type: Microsoft.TeamFoundation.Framework.Client.IdentityDescriptor- identity type + identifier 
- queryMembership 
 Type: Microsoft.TeamFoundation.Framework.Common.MembershipQuery- none, direct or expanded membership information 
- readOptions 
 Type: Microsoft.TeamFoundation.Framework.Common.ReadIdentityOptions- read options, such as reading from source 
Return Value
Type: Microsoft.TeamFoundation.Framework.Client.TeamFoundationIdentity
identity if found, else null
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.