asp.net - System.ArgumentNullException when using TextEncodings -


i have following lines somewhere in code

    var issuer = "https://" + configurationmanager.appsettings["auth0:domain"] + "/";      var audience = configurationmanager.appsettings["auth0:client_id"];      var secret = textencodings.base64url.decode(                   configurationmanager.appsettings["auth0:client_secret"]);

an null exception thrown in last statement. here part of stack trace:

[argumentnullexception: value cannot null. parameter name: text]  microsoft.owin.security.datahandler.encoder.base64urltextencoder.decode(string text) +99 authzero.api.startup.configureauthzero(iappbuilder app) in c:\users\abdi\source\repos\auth0-example\authzero.api\startup.cs:34 authzero.api.startup.configuration(iappbuilder app) in c:\users\abdi\source\repos\auth0-example\authzero.api\startup.cs:21

obviously textencodings.base64url.decode looking string parameter, instead have method inside. not sure why isn't working copying github repo.

here appsettings located web.config file:

   <appsettings>      <add key="auth0:clientid" value="go0k9jkaxegrgrshczluaiacr3asndkh" />      <add key="auth0:clientsecret" value="1zvvkpywgmfdufnldpb2a9xgukv_ycak-pxtna9rnvtjtihc5a8gvl6pcufm4owv" />      <add key="auth0:domain" value="amalexp.auth0.com" />   </appsettings>

okay, think fixed issue removing configurationmanager.appsettings , inserting strings directly instead of looking @ app.config file. got "http error 403.14 - forbidden web server configured not list contents of directory." error story.

you have space , underscore in setting name in code, not in app.config.


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