/// <summary>
/// Retrieves the value of a claim.
/// </summary>
/// <param name="identity">The identity.</param>
/// <param name="claimType">Type of the claim.</param>
/// <returns>The value</returns>
public static string GetClaimValue(this IClaimsIdentity identity, string claimType)
{
Contract.Requires(identity != null);
Contract.Requires(identity.Claims != null);
Contract.Requires(!String.IsNullOrEmpty(claimType));
Contract.Ensures(Contract.Result <string>() != null);
string value = null;
if (identity.TryGetClaimValue(claimType, out value))
{
return(value);
}
throw new ClaimNotFoundException(claimType);
}
