我知道提供了一个“名称”字段，但我更愿意明确地访问第一个和最后一个名字。有人可以帮忙吗？我仍然围着ASP.Net MVC包围我的头。
解决方法
在您的Startup.Auth.cs ConfigureAuth(IAppBuilder app)方法中，为Facebook设置以下内容：
var x = new FacebookAuthenticationOptions();
x.Scope.Add("email");
x.AppId = "*";
x.AppSecret = "**";
x.Provider = new FacebookAuthenticationProvider()
{
OnAuthenticated = async context =>
{
context.Identity.AddClaim(new System.Security.Claims.Claim("FacebookAccessToken",context.AccessToken));
foreach (var claim in context.User)
{
var claimType = string.Format("urn:facebook:{0}",claim.Key);
string claimValue = claim.Value.ToString();
if (!context.Identity.HasClaim(claimType,claimValue))
context.Identity.AddClaim(new System.Security.Claims.Claim(claimType,claimValue,"XmlSchemaString","Facebook"));
}
}
};
x.SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie;
app.UseFacebookAuthentication(x);
/*
app.UseFacebookAuthentication(
appId: "*",appSecret: "*");
* */
var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();
然后以下获得名字：
var firstNameClaim = loginInfo.ExternalIdentity.Claims.First(c => c.Type == "urn:facebook:first_name");
