/// <summary>
/// Try to add a new default claim to the identity. It will not replace an existing claim.
/// </summary>
/// <param name="identity">IIdentity from which the claim is to be removed</param>
/// <param name="claimType">The claim type to be added</param>
/// <returns>True if successfully able to add the claim, false otherwise</returns>
public static bool TryAddClaim(this IIdentity identity, string claimType)
{
var claimsIdentity = identity as ClaimsIdentity;
var existingClaim = claimsIdentity?.FindFirst(claimType);
if (existingClaim == null)
{
claimsIdentity.AddClaim(ClaimsExtensions.CreateBooleanClaim(claimType));
return(true);
}
return(false);
}
/// <summary>
/// Try to add a new default claim to the identity. It will not replace an existing claim.
/// </summary>
/// <param name="identity">IIdentity from which the claim is to be removed</param>
/// <param name="claimType">The claim type to be added</param>
/// <param name="claimValue">The claim value for the type to be added, null will add default boolean claim</param>
/// <returns>True if successfully able to add the claim, false otherwise</returns>
public static bool TryAddClaim(this IIdentity identity, string claimType, string claimValue = null)
{
var claimsIdentity = identity as ClaimsIdentity;
var existingClaim = claimsIdentity?.FindFirst(claimType);
if (existingClaim == null)
{
var claim = string.IsNullOrEmpty(claimValue)
? ClaimsExtensions.CreateBooleanClaim(claimType)
: new Claim(claimType, claimValue);
claimsIdentity.AddClaim(claim);
return(true);
}
return(false);
}
