SByte.MinValue フィールド

定義

SByte の最小有効値を表します。Represents the smallest possible value of SByte. このフィールドは定数です。This field is constant.

public: System::SByte MinValue = -128;
public const sbyte MinValue = -128;
val mutable MinValue : sbyte
Public Const MinValue As SByte  = -128

フィールド値

次の例では、MinValue フィールドと MaxValue フィールドを使用して、型変換を実行する前に Int64 値が SByte 型の範囲内にあることを確認します。The following example uses the MinValue and MaxValue fields to verify that an Int64 value is within the range of the SByte type before it performs a type conversion. この検証により、実行時に OverflowException が発生しません。This verification prevents an OverflowException at run time.

long longValue = -130;
sbyte byteValue; 

if (longValue <= sbyte.MaxValue && 
    longValue >= sbyte.MinValue)
{    
   byteValue = (sbyte) longValue;
   Console.WriteLine("Converted long integer value to {0}.", byteValue);
}   
else
{
   sbyte rangeLimit;
   string relationship;
   
   if (longValue > sbyte.MaxValue)
   {
      rangeLimit = sbyte.MaxValue;
      relationship = "greater";
   }   
   else
   {
      rangeLimit = sbyte.MinValue;
      relationship = "less";
   }       

   Console.WriteLine("Conversion failure: {0:n0} is {1} than {2}.",  
                     longValue, 
                     relationship, 
                     rangeLimit);
}       
Dim longValue As Long = -130
Dim byteValue As SByte 

If longValue <= SByte.MaxValue AndAlso _
   longValue >= SByte.MinValue Then
   byteValue = CSByte(longValue)
   Console.WriteLine("Converted long integer value to {0}.", byteValue)
Else
   Dim rangeLimit As SByte
   Dim relationship As String
   
   If longValue > SByte.MaxValue Then
      rangeLimit = SByte.MaxValue
      relationship = "greater"
   Else
      rangeLimit = SByte.MinValue
      relationship = "less"
   End If       

   Console.WriteLine("Conversion failure: {0:n0} is {1} than {2}.", _ 
                     longValue, _
                     relationship, _
                     rangeLimit)
End If       

注釈

この定数の値は-128 です。つまり、16進数の0x80 です。The value of this constant is -128; that is, hexadecimal 0x80.

適用対象

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