Detect proxy configuration in webrequest

Question

Good afternoon my dear, I need to make a request for an api that stays in an external domain the local network, I perform this through a webrequest that was created this way:

WebRequest myWebRequest = WebRequest.Create("urldestino");

However, the network has a proxy, which barred my requests informing that proxy authentication was necessary. To test the operation, I was able to perform the request by manually setting the proxy in the following way:

WebProxy myProxy = new WebProxy();
myProxy = (WebProxy)WebProxy.GetDefaultProxy();
myProxy.Credentials = new NetworkCredential("meuusuario", "minhasenha", "meudominio");
myWebRequest.Proxy = myProxy;

Detail: after the execution of "myProxy = (WebProxy)WebProxy.GetDefaultProxy();" myProxy.Credentials was null, so I manually set.

In this way, the request goes through the proxy, but I was directed to get the proxy session already authenticated by windows, in the same way that browsers and Postman do, in Postman for example I perform the request without the need to inform the proxy data and it does not return me a proxy Authentication is required.

Is there any way I can get the proxy session authenticated without having to manually pass the registration and password of the logged in users?

From now on I thank you very much.

Answer 1

To avoid manually passing credentials you can obtain credentials as follows:

WebProxy myProxy = new WebProxy();
myProxy = (WebProxy)WebProxy.GetDefaultProxy();
myProxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
myWebRequest.Proxy = myProxy;

With the System.Net.CredentialCache.DefaultCredentials; it will return the credentials already set in IE by default, just below Arrow to webrequest.proxy credentials.