Convert.ToSingle メソッド (Byte)

指定した 8 ビット符号なし整数値を等価の単精度浮動小数点数に変換します。

Overloads Public Shared Function ToSingle( _
   ByVal value As Byte _) As Single
[C#]
public static float ToSingle(bytevalue);
[C++]
public: static float ToSingle(unsigned charvalue);
[JScript]
public static function ToSingle(
   value : Byte) : float;

パラメータ

• value
  8 ビット符号なし整数。

戻り値

value の値と等価な単精度浮動小数点数。

解説

ToSingle を使用して、 Byte を Single に変換する方法については、次のコード例を参照してください。

 
Public Sub ConvertByteSingle(ByVal byteVal As Byte)
    Dim singleVal As Single

    ' Byte to float conversion will not overflow.
    singleVal = System.Convert.ToSingle(byteVal)
    System.Console.WriteLine("The byte as a single is {0}.", _
                              singleVal)

    ' Single to byte conversion can overflow.
    Try
        byteVal = System.Convert.ToByte(singleVal)
        System.Console.WriteLine("The single as a byte is {0}.", _
                                  byteVal)
    Catch exception As System.OverflowException
        System.Console.WriteLine( _
            "Overflow in single-to-byte conversion.")
    End Try
End Sub

[C#] 
public void ConvertByteSingle(byte byteVal) {
    float floatVal;

    // Byte to float conversion will not overflow.
    floatVal = System.Convert.ToSingle(byteVal);
    System.Console.WriteLine("The byte as a float is {0}.",
        floatVal);

    // Float to byte conversion can overflow.
    try {
        byteVal = System.Convert.ToByte(floatVal);
        System.Console.WriteLine("The float as a byte is {0}.",
            byteVal);
    }
    catch (System.OverflowException) {
        System.Console.WriteLine(
            "The float value is too large for a byte.");
    }
}

[C++] 

   void ConvertByteSingle(Byte byteVal)
   {
      float floatVal;

      // Byte to float conversion will not overflow.
      floatVal = System::Convert::ToSingle(byteVal);
      System::Console::WriteLine(S"The Byte as a float is {0}.",
         __box(floatVal));

      // Float to Byte conversion can overflow.
      try {
         byteVal = System::Convert::ToByte(floatVal);
         System::Console::WriteLine(S"The float as a Byte is {0}.",
            __box(byteVal));
      } catch (System::OverflowException*) {
         System::Console::WriteLine(S"The float value is too large for a Byte.");
      }
   }

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

Convert クラス | Convert メンバ | System 名前空間 | Convert.ToSingle オーバーロードの一覧