IPAddress.Parse メソッド

[アーティクル]
03/28/2008

IP アドレス文字列を IPAddress インスタンスに変換します。

Public Shared Function Parse( _
   ByVal ipString As String _) As IPAddress
[C#]
public static IPAddress Parse(stringipString);
[C++]
public: static IPAddress* Parse(String* ipString);
[JScript]
public static function Parse(
   ipString : String) : IPAddress;

パラメータ

ipString
ピリオド区切りの 10 進表記 (IPv4 の場合) またはコロン区切りの 16 進表記 (IPv6 の場合) の IP アドレスを格納している文字列。

戻り値

IPAddress のインスタンス。

例外

例外の種類	条件
ArgumentNullException	ipString が null 参照 (Visual Basic では Nothing) です。
FormatException	ipString が有効な IP アドレスではありません。

解説

静的 Parse メソッドは、ピリオド区切りの 10 進表記 (IPv4 の場合) またはコロン区切りの 16 進表記 (IPv6 の場合) で表された IP アドレスから IPAddress インスタンスを作成します。

使用例

[Visual Basic, C#, C++] 次のコードは、ピリオド区切りの 10 進表記 (IPv4 の場合) またはコロン区切りの 16 進表記 (IPv6 の場合) の IP アドレスを格納する文字列を、IPAddress クラスのインスタンスに変換します。次に、オーバーロードされた ToString メソッドを使用して、標準表記でアドレスを表示します。

 
Imports System
Imports System.Net



Class ParseAddress
   
   'Entry point which delegates to C-style main Private Function
   Public Overloads Shared Sub Main()
      Main(System.Environment.GetCommandLineArgs())
   End Sub
   
   
   Overloads Private Shared Sub Main(args() As String)
      Dim IPaddress As String
      
      If args.Length = 1 Then
         Console.WriteLine("Please enter an IP address.")
         Console.WriteLine("Usage:   >cs_parse any IPv4 or IPv6 address.")
         Console.WriteLine("Example: >cs_parse 127.0.0.1")
         Console.WriteLine("Example: >cs_parse 0:0:0:0:0:0:0:1")
         Return
      Else
         IPaddress = args(1)
      End If 
      ' Get the list of the IPv6 addresses associated with the requested host.
      parse(IPaddress)
   End Sub 'Main
    
   
   ' This method calls the IPAddress.Parse method to check the ipAddress 
   ' input string. If the ipAddress argument represents a syntatical correct IPv4 or
   ' IPv6 address, the method displays the Parse output into quad-notation or
   ' colon-hexadecimal notation, respectively. Otherwise, it displays an 
   ' error message.
   Private Shared Sub parse(ipAddr As String)
      Try
         ' Create an instance of IPAddress for the specified address string (in 
         ' dotted-quad, or colon-hexadecimal notation).
         Dim address As IPAddress = IPAddress.Parse(ipAddr)
         
         ' Display the address in standard notation.
         Console.WriteLine(("Parsing your input string: " + """" + ipAddr + """" + " produces this address (shown in its standard notation): " + address.ToString()))
      
      Catch e As ArgumentNullException
         Console.WriteLine("ArgumentNullException caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      
      Catch e As FormatException
         Console.WriteLine("FormatException caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      
      Catch e As Exception
         Console.WriteLine("Exception caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      End Try
   End Sub 'parse 
End Class 'ParseAddress

[C#] 

using System;
using System.Net;

class ParseAddress
{

  private static void Main(string[] args) 
  {
    string IPaddress;

    if (args.Length == 0)
    {
      Console.WriteLine("Please enter an IP address.");
      Console.WriteLine("Usage:   >cs_parse any IPv4 or IPv6 address.");
      Console.WriteLine("Example: >cs_parse 127.0.0.1");
      Console.WriteLine("Example: >cs_parse 0:0:0:0:0:0:0:1");
      return;
    }
    else
      IPaddress = args[0];

    // Get the list of the IPv6 addresses associated with the requested host.
    parse(IPaddress);
   
  }

  // This method calls the IPAddress.Parse method to check the ipAddress 
  // input string. If the ipAddress argument represents a syntatically correct IPv4 or
  // IPv6 address, the method displays the Parse output into quad-notation or
  // colon-hexadecimal notation, respectively. Otherwise, it displays an 
  // error message.
  private static void parse(string ipAddress)
  {
    try
    {
      // Create an instance of IPAddress for the specified address string (in 
      // dotted-quad, or colon-hexadecimal notation).
      IPAddress address = IPAddress.Parse(ipAddress);

      // Display the address in standard notation.
      Console.WriteLine("Parsing your input string: " + "\"" + ipAddress + "\"" + " produces this address (shown in its standard notation): "+ address.ToString());
    }

    catch(ArgumentNullException e)
    {
      Console.WriteLine("ArgumentNullException caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }

    catch(FormatException e)
    {
      Console.WriteLine("FormatException caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }
    
    catch(Exception e)
    {
      Console.WriteLine("Exception caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }

   }
}

[C++] 
#using <mscorlib.dll>
#using <System.dll>
using namespace System;
using namespace System::Net;


// This method calls the IPAddress::Parse method to check the ipAddress
// input string. If the ipAddress argument represents a syntatically correct IPv4 or
// IPv6 address, the method displays the Parse output into quad-notation or
// colon-hexadecimal notation, respectively. Otherwise, it displays an
// error message.
void parse(String* ipAddress) {
   try {
      // Create an instance of IPAddress for the specified address string (in
      // dotted-quad, or colon-hexadecimal notation).
      IPAddress* address = IPAddress::Parse(ipAddress);

      // Display the address in standard notation.
      Console::WriteLine(S"Parsing your input string: \"{0}\" produces this address (shown in its standard notation): {1}", ipAddress, address);
   } catch (ArgumentNullException* e) {
      Console::WriteLine(S"ArgumentNullException caught!!!");
      Console::WriteLine(S"Source : {0}", e->Source);
      Console::WriteLine(S"Message : {0}", e->Message);
   } catch (FormatException* e) {
      Console::WriteLine(S"FormatException caught!!!");
      Console::WriteLine(S"Source : {0}", e->Source);
      Console::WriteLine(S"Message : {0}", e->Message);
   } catch (Exception* e) {
      Console::WriteLine(S"Exception caught!!!");
      Console::WriteLine(S"Source : {0}", e->Source);
      Console::WriteLine(S"Message : {0}", e->Message);
   }
}

int main() {
   String* args[] = Environment::GetCommandLineArgs();
   String* IPaddress;

   if (args->Length == 1) {
      Console::WriteLine(S"Please enter an IP address.");
      Console::WriteLine(S"Usage:   >cs_parse any IPv4 or IPv6 address.");
      Console::WriteLine(S"Example: >cs_parse 127.0.0.1");
      Console::WriteLine(S"Example: >cs_parse 0:0:0:0:0:0:0:1");
      return 0;
   } else
      IPaddress = args[1];
   // Get the list of the IPv6 addresses associated with the requested host.
   parse(IPaddress);
}

[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタボタンをクリックします。

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET, Common Language Infrastructure (CLI) Standard

参照

IPAddress クラス | IPAddress メンバ | System.Net 名前空間

次の方法で共有

IPAddress.Parse メソッド

パラメータ

戻り値

例外

解説

使用例

必要条件

参照

その他のリソース