Определить шлюз по умолчанию устройств в локальной сети - C#
Формулировка задачи:
Всем доброго времени суток. Имеем большую локальную сеть с несколькими подсетями, в каждой из которых порядка 10-20 компов. вся сеть в домене. Знает ли кто-нибудь как узнать шлюз по умолчанию у каждого компьютера в сети?
Решение задачи: «Определить шлюз по умолчанию устройств в локальной сети»
textual
Листинг программы
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Management;
namespace WMISample
{
public class MyQuerySample : System.Windows.Forms.Form
{
private System.Windows.Forms.Label userNameLabel;
private System.Windows.Forms.TextBox userNameBox;
private System.Windows.Forms.TextBox passwordBox;
private System.Windows.Forms.Label passwordLabel;
private System.Windows.Forms.Button OKButton;
private System.Windows.Forms.Button cancelButton;
private System.ComponentModel.Container components = null;
public MyQuerySample()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.userNameLabel = new System.Windows.Forms.Label();
this.userNameBox = new System.Windows.Forms.TextBox();
this.passwordBox = new System.Windows.Forms.TextBox();
this.passwordLabel = new System.Windows.Forms.Label();
this.OKButton = new System.Windows.Forms.Button();
this.cancelButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// userNameLabel
//
this.userNameLabel.Location = new System.Drawing.Point(16, 8);
this.userNameLabel.Name = "userNameLabel";
this.userNameLabel.Size = new System.Drawing.Size(160, 32);
this.userNameLabel.TabIndex = 0;
this.userNameLabel.Text = "Enter the user name for the remote computer:";
//
// userNameBox
//
this.userNameBox.Location = new System.Drawing.Point(160, 16);
this.userNameBox.Name = "userNameBox";
this.userNameBox.Size = new System.Drawing.Size(192, 20);
this.userNameBox.TabIndex = 1;
this.userNameBox.Text = "";
//
// passwordBox
//
this.passwordBox.Location = new System.Drawing.Point(160, 48);
this.passwordBox.Name = "passwordBox";
this.passwordBox.PasswordChar = '*';
this.passwordBox.Size = new System.Drawing.Size(192, 20);
this.passwordBox.TabIndex = 3;
this.passwordBox.Text = "";
//
// passwordLabel
//
this.passwordLabel.Location = new System.Drawing.Point(16, 48);
this.passwordLabel.Name = "passwordLabel";
this.passwordLabel.Size = new System.Drawing.Size(160, 32);
this.passwordLabel.TabIndex = 2;
this.passwordLabel.Text = "Enter the password for the remote computer:";
//
// OKButton
//
this.OKButton.Location = new System.Drawing.Point(40, 88);
this.OKButton.Name = "OKButton";
this.OKButton.Size = new System.Drawing.Size(128, 23);
this.OKButton.TabIndex = 4;
this.OKButton.Text = "OK";
this.OKButton.Click += new System.EventHandler(this.OKButton_Click);
//
// cancelButton
//
this.cancelButton.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.cancelButton.Location = new System.Drawing.Point(200, 88);
this.cancelButton.Name = "cancelButton";
this.cancelButton.Size = new System.Drawing.Size(128, 23);
this.cancelButton.TabIndex = 5;
this.cancelButton.Text = "Cancel";
this.cancelButton.Click += new System.EventHandler(this.cancelButton_Click);
//
// MyQuerySample
//
this.AcceptButton = this.OKButton;
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.CancelButton = this.cancelButton;
this.ClientSize = new System.Drawing.Size(368, 130);
this.ControlBox = false;
this.Controls.Add(this.cancelButton);
this.Controls.Add(this.OKButton);
this.Controls.Add(this.passwordBox);
this.Controls.Add(this.passwordLabel);
this.Controls.Add(this.userNameBox);
this.Controls.Add(this.userNameLabel);
this.Name = "MyQuerySample";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Remote Connection";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new MyQuerySample());
}
private void OKButton_Click(object sender, System.EventArgs e)
{
try
{
ConnectionOptions connection = new ConnectionOptions();
connection.Username = userNameBox.Text;
connection.Password = passwordBox.Text;
connection.Authority = "ntlmdomain:MY_DOMAIN";
ManagementScope scope = new ManagementScope(
"\\\\FullComputerName\\root\\CIMV2", connection);
scope.Connect();
ObjectQuery query= new ObjectQuery(
"SELECT * FROM Win32_NetworkAdapterConfiguration");
ManagementObjectSearcher searcher =
new ManagementObjectSearcher(scope, query);
foreach (ManagementObject queryObj in searcher.Get())
{
Console.WriteLine("-----------------------------------");
Console.WriteLine("Win32_NetworkAdapterConfiguration instance");
Console.WriteLine("-----------------------------------");
if(queryObj["DefaultIPGateway"] == null)
Console.WriteLine("DefaultIPGateway: {0}", queryObj["DefaultIPGateway"]);
else
{
String[] arrDefaultIPGateway = (String[])(queryObj["DefaultIPGateway"]);
foreach (String arrValue in arrDefaultIPGateway)
{
Console.WriteLine("DefaultIPGateway: {0}", arrValue);
}
}
}
Close();
}
catch(ManagementException err)
{
MessageBox.Show("An error occurred while querying for WMI data: " + err.Message);
}
catch(System.UnauthorizedAccessException unauthorizedErr)
{
MessageBox.Show("Connection error (user name or password might be incorrect): " + unauthorizedErr.Message);
}
}
private void cancelButton_Click(object sender, System.EventArgs e)
{
Close();
}
}
}