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分享网络问题 来了!
private void button1_Click(object sender, System.EventArgs e)
{
DnsPermission dnsP=new DnsPermissio (System.Security.Permissions.PermissionState.None);
dnsP.Deny();
textBox1.Text = Dns.GetHostName();
}
1. 为何现在可以访问?而.PermissionState.None改为.PermissionState.Unrestricted后,却为异常?
2. 去掉dnsP.Deny()后, PermissionState为None或Unrestricted均可以访问,为何?
{
DnsPermission dnsP=new DnsPermissio (System.Security.Permissions.PermissionState.None);
dnsP.Deny();
textBox1.Text = Dns.GetHostName();
}
1. 为何现在可以访问?而.PermissionState.None改为.PermissionState.Unrestricted后,却为异常?
2. 去掉dnsP.Deny()后, PermissionState为None或Unrestricted均可以访问,为何?
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