HttpClientCertificate.IsValid Property    
Definition
Important
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Gets a value that indicates whether the client certificate is valid.
public:
 property bool IsValid { bool get(); };public bool IsValid { get; }member this.IsValid : boolPublic ReadOnly Property IsValid As BooleanProperty Value
true if the client certificate is valid; otherwise, false.
Remarks
The client certificate is not valid if the Certificate Authority (CA) is not in the list of recognized CAs on the server.