SignTime

IDigitalSignature.SignTime 属性

文档签署的时间。只读 DateTime。

public DateTime SignTime { get; }

示例

[C#]
using (Presentation pres = new Presentation("SomePresentationSigned.pptx"))
{
    foreach (DigitalSignature signature in pres.DigitalSignatures)
        Console.WriteLine("签名检查: " + (signature.IsValid ? "有效" : "无效") + ", 签署时间: " + signature.SignTime);
}

另请参见

IsValid