UInt64.MaxValue Feld

public: System::UInt64 MaxValue = 18446744073709551615;

public const ulong MaxValue = 18446744073709551615;

val mutable MaxValue : uint64

Public Const MaxValue As ULong  = 18446744073709551615

Feldwert

UInt64

Beispiele

Im folgenden Beispiel wird anhand MinValue der MaxValue Felder und überprüft, ob ein Double Wert innerhalb des Bereichs des Typs liegt, UInt64 bevor eine Typkonvertierung durchführt.The following example uses the MinValue and MaxValue fields to verify that a Double value is within the range of the UInt64 type before it performs a type conversion. Dadurch wird ein OverflowException zur Laufzeit verhindert.This prevents an OverflowException at run time.

double decimalValue = -1.5;
ulong integerValue; 

// Discard fractional portion of Double value
double decimalInteger = Math.Floor(decimalValue);

if (decimalInteger <= ulong.MaxValue && 
    decimalInteger >= ulong.MinValue)
{    
   integerValue = (ulong) decimalValue;
   Console.WriteLine("Converted {0} to {1}.", decimalValue, integerValue);
}   
else
{
   ulong rangeLimit;
   string relationship;
   
   if (decimalInteger > ulong.MaxValue)
   {
      rangeLimit = ulong.MaxValue;
      relationship = "greater";
   }   
   else
   {
      rangeLimit = ulong.MinValue;
      relationship = "less";
   }       

   Console.WriteLine("Conversion failure: {0} is {1} than {2}.",  
                     decimalInteger, 
                     relationship, 
                     rangeLimit);
}       

Dim decimalValue As Double = -1.5
Dim integerValue As ULong 

' Discard fractional portion of Double value
Dim decimalInteger As Double = Math.Floor(decimalValue)

If decimalInteger <= ULong.MaxValue AndAlso _
   decimalInteger >= ULong.MinValue Then
   integerValue = CULng(decimalValue)
   Console.WriteLine("Converted {0} to {1}.", decimalValue, integerValue)
Else
   Dim rangeLimit As ULong
   Dim relationship As String
   
   If decimalInteger > ULong.MaxValue Then
      rangeLimit = ULong.MaxValue
      relationship = "greater"
   Else
      rangeLimit = ULong.MinValue
      relationship = "less"
   End If       

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

Hinweise

Der Wert dieser Konstante ist 18446744073709551615; Das heißt, hexadezimal 0xFFFFFFFFFFFFFFFF.The value of this constant is 18,446,744,073,709,551,615; that is, hexadecimal 0xFFFFFFFFFFFFFFFF.

Gilt für:

Siehe auch

• MinValue