[研究][ASP.NET]加簽寄信-值不能為 null。參數名稱: findValue

[研究][ASP.NET]加簽寄信-值不能為 null。參數名稱: findValue

2022-06-07 

環境：Visual Studio 2022 + ASP.NET + WebForm + Web Application + C#

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把

//從Web.Config中抓Email憑證序號值 string emailCertificateSN = ConfigurationManager.AppSettings["EmailCertificateSN"]; //用 Email憑證序號抓比較不會抓錯 X509Certificate2 signCert = store.Certificates.Find(X509FindType.FindBySerialNumber, emailCertificateSN, false)[0];

改成下面，失敗直接

//從Web.Config中抓Email憑證序號值 string emailCertificateSN = ConfigurationManager.AppSettings["EmailCertificateSN"]; if (emailCertificateSN == null || emailCertificateSN == "") { return "讀取不到Email憑證序號。"; } //用 Email憑證序號抓比較不會抓錯 X509Certificate2 signCert = store.Certificates.Find(X509FindType.FindBySerialNumber, emailCertificateSN, false)[0];

(完)