sdk/samples/FrameworkSamples/NCL/PingClient/cs/pingclient/pingclientform.cs

   1 //---------------------------------------------------------------------
   2 //  This file is part of the Microsoft .NET Framework SDK Code Samples.
   3 //
   4 //  Copyright (C) Microsoft Corporation.  All rights reserved.
   5 //
   6 //This source code is intended only as a supplement to Microsoft
   7 //Development Tools and/or on-line documentation.  See these other
   8 //materials for detailed information regarding Microsoft code samples.
   9 //
  10 //THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
  11 //KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  12 //IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
  13 //PARTICULAR PURPOSE.
  14 //---------------------------------------------------------------------
  15
  16 using System;
  17 using System.Collections.Generic;
  18 using System.ComponentModel;
  19 using System.Data;
  20 using System.Drawing;
  21 using System.Windows.Forms;
  22 using System.Net.NetworkInformation;
  23 using System.Globalization;
  24
  25 namespace Microsoft.Samples.PingClient
  26 {
  27     partial class PingClientForm : Form
  28     {
  29         Ping pingClient = new Ping();
  30
  31         public PingClientForm()
  32         {
  33             InitializeComponent();
  34             pingClient.PingCompleted +=
  35                 new PingCompletedEventHandler(pingClient_PingCompleted);
  36         }
  37
  38         private void pingClient_PingCompleted(object sender, PingCompletedEventArgs e)
  39         {
  40             // Check to see if an error occurred.  If no error, then display
  41             // the address used and the ping time in milliseconds.
  42             if (e.Error == null)
  43             {
  44                 if (e.Cancelled)
  45                 {
  46                     pingDetailsTextBox.Text += "  Ping cancelled. \r\n";
  47                 }
  48                 else
  49                 {
  50                     if (e.Reply.Status == IPStatus.Success)
  51                     {
  52                         pingDetailsTextBox.Text +=
  53                             "  " + e.Reply.Address.ToString() + " " +
  54                             e.Reply.RoundtripTime.ToString(
  55                             NumberFormatInfo.CurrentInfo) + "ms" + "\r\n";
  56                     }
  57                     else
  58                     {
  59                         pingDetailsTextBox.Text +=
  60                             "  " + GetStatusString(e.Reply.Status) + "\r\n";
  61                     }
  62                 }
  63             }
  64             else
  65             {
  66                 // Otherwise display the error.
  67                 pingDetailsTextBox.Text += "  Ping error.\r\n";
  68                 MessageBox.Show(
  69                     "An error occurred while sending this ping. " +
  70                     e.Error.InnerException.Message);
  71             }
  72             sendButton.Enabled = true;
  73         }
  74
  75         private string GetStatusString(IPStatus status)
  76         {
  77             switch (status)
  78             {
  79                 case IPStatus.Success:
  80                     return "Success.";
  81                 case IPStatus.DestinationHostUnreachable:
  82                     return "Destination host unreachable.";
  83                 case IPStatus.DestinationNetworkUnreachable:
  84                     return "Destination network unreachable.";
  85                 case IPStatus.DestinationPortUnreachable:
  86                     return "Destination port unreachable.";
  87                 case IPStatus.DestinationProtocolUnreachable:
  88                     return "Destination protocol unreachable.";
  89                 case IPStatus.PacketTooBig:
  90                     return "Packet too big.";
  91                 case IPStatus.TtlExpired:
  92                     return "TTL expired.";
  93                 case IPStatus.ParameterProblem:
  94                     return "Parameter problem.";
  95                 case IPStatus.SourceQuench:
  96                     return "Source quench.";
  97                 case IPStatus.TimedOut:
  98                     return "Timed out.";
  99                 default:
 100                     return "Ping failed.";
 101             }
 102         }
 103
 104         private void sendButton_Click(object sender, EventArgs e)
 105         {
 106             // Select all the text in the address box.
 107             addressTextBox.SelectAll();
 108
 109             if (addressTextBox.Text.Length != 0)
 110             {
 111                 // Disable the Send button.
 112                 sendButton.Enabled = false;
 113
 114                 pingDetailsTextBox.Text +=
 115                     "Pinging " + addressTextBox.Text + " . . .\r\n";
 116
 117                 // Send ping request.
 118                 pingClient.SendAsync(addressTextBox.Text, null);
 119             }
 120             else
 121             {
 122                 MessageBox.Show("Please enter an IP address or host name.");
 123             }
 124
 125         }
 126
 127         private void cancelButton_Click(object sender, EventArgs e)
 128         {
 129             // Cancel any pending pings.
 130             pingClient.SendAsyncCancel();
 131         }
 132     }
 133 }