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This article how to limit a read on a user in BCS, but we can't find the correct syntax for fba-users. (MS Quote: If the login mode for the user is claims-based, then the value passed is the unique value that identifies the user (for example, membership: username,

So we asked ourselves how to write qualifiedusername behind the scenes with @Username in a create part of BCS (and see what it wrote). But we couldn't find a way for that either. Thanks in advance. Rob

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Given a login name (SPContext.Current.Web.CurrentUser.LoginName) of "i:0#.f|fbaprovider|user" the following will result in "user"

string result = LoginName;
if (Microsoft.SharePoint.Administration.Claims.SPClaimProviderManager.IsEncodedClaim(LoginName))
    result = Microsoft.SharePoint.Administration.Claims.SPClaimProviderManager.Local.DecodeClaim(LoginName).Value;
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