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      c#實(shí)現(xiàn)驗(yàn)證某個(gè)IP地址是否能ping通
      
                    
                    
                    
                    
      
                         昵稱10504424
                        
                        
                        2013-02-19
                        
                            
                        
                    
      
                    
      
                        
                        
      
                    
      
                    
                    
      
                        
      
                            
                        
      
                        
      
                            
                                
      
                                    
                                        
      

                                        
                                        

                                        using System; 
      using System.Collections.Generic; 
      using System.Text; 
      using System.IO; 
      using System.Net.NetworkInformation; 
      using System.Threading; 
      namespace Manager.Common 
      { 
      public static class NetCommon{ 
              /// <summary> 
              /// 驗(yàn)證IP地址字符串的正確性 
              /// </summary> 
              /// <param name="strIP">要驗(yàn)證的IP地址字符串</param> 
              /// <returns>格式是否正確，正確為 true 否則為 false</returns> 
              public static bool CheckIPAddr(string strIP) 
              { 
                  if (string.IsNullOrEmpty(strIP)) 
                  { 
                      return false; 
                  } 
                  // 保持要返回的信息 
                  bool bRes = true; 
                  int iTmp = 0;    // 保持每個(gè)由“.”分隔的整型 
                  string[] ipSplit = strIP.Split('.'); 
                  if (ipSplit.Length < 4 || string.IsNullOrEmpty(ipSplit[0]) || 
                      string.IsNullOrEmpty(ipSplit[1]) || 
                      string.IsNullOrEmpty(ipSplit[2]) || 
                      string.IsNullOrEmpty(ipSplit[3])) 
                  { 
                      bRes = false; 
                  } 
                  else 
                  { 
                      for (int i = 0; i < ipSplit.Length; i++) 
                      { 
                          if (!int.TryParse(ipSplit[i], out iTmp) || iTmp < 0 || iTmp > 255) 
                          { 
                              bRes = false; 
                              break; 
                          } 
                      } 
                  } 

                  return bRes; 
              } 
              /// <summary> 
              /// 驗(yàn)證某個(gè)IP是否可ping通 
                /// </summary> 
              /// <param name="strIP">要驗(yàn)證的IP</param> 
              /// <returns>是否可連通  是：true 否：false</returns> 
              public static bool TestNetConnectity(string strIP) 
              { 
                  if (!NetUtil.CheckIPAddr(strIP)) 
                  { 
                      return false; 
                  } 
                  // Windows L2TP VPN和非Windows VPN使用ping VPN服務(wù)端的方式獲取是否可以連通 
                  Ping pingSender = new Ping(); 
                  PingOptions options = new PingOptions(); 

                  // Use the default Ttl value which is 128, 
                  // but change the fragmentation behavior. 
                  options.DontFragment = true; 

                  // Create a buffer of 32 bytes of data to be transmitted. 
                  string data = "testtesttesttesttesttesttesttest"; 
                  byte[] buffer = Encoding.ASCII.GetBytes(data); 
                  int timeout = 120; 
                  PingReply reply = pingSender.Send(strIP, timeout, buffer, options); 

                  return (reply.Status == IPStatus.Success); 
              } 
              /// <summary> 
              /// 連續(xù)幾次查看是否某個(gè)IP可以PING通 
              /// </summary> 
              /// <param name="strIP">ping的IP地址</param> 
              /// <param name="WaitSecond">每次間隔時(shí)間，單位：秒</param> 
              /// <param name="iTestTimes">測(cè)試次數(shù)</param> 
              /// <returns>是否可以連通</returns> 
              public static bool TestNetConnected(string strIP, int WaitSecond, int iTestTimes) 
              { 
                  for (int i = 0; i < iTestTimes - 1; i++) 
                  { 
                      if (TestNetConnectity(strIP)) 
                      { 
                          return true; 
                      } 
                      Thread.Sleep(WaitSecond * 1000); 
                  } 

                  return TestNetConnectity(strIP); 
              } 
      } 
      }      
                                          		
                                
      
                                  
                        
      
                    
      



                
      
                
      
                    
                    
                        
      
                            
                                
        
                                    		
                        
        
                            
                
        
                
        
                
                
                
        
                
        


                

                
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