Xamarin System.Net.WebException missing WebExceptionStatus.NameResolutionFailure

问题

I have an exception I can't handle properly in Xamarin.Forms due to a missing member in the WebExceptionStatus enumeration, namely the NameResolutionFailure member.

Does anyone know how I can properly handle the exception in this specific case?

回答1:

When looking at a previous version of the WebExceptionStatus enumeration, the NameResolutionFailure member is not supported in a PCL.

What you can do to handle this issue is as follows:

case (System.Net.WebExceptionStatus)1:
    // your code

Or:

catch (System.Net.WebException ex)
{
    if ((int)ex.Status == 1)
        // your code
)

I tested this by simply throwing a new WebException like this:

throw new System.Net.WebException("Test", (System.Net.WebExceptionStatus)1);

Which, as I thought, returned an exception with NameResolutionFailure being the StatusCode.

来源：https://stackoverflow.com/questions/41413172/xamarin-system-net-webexception-missing-webexceptionstatus-nameresolutionfailure