UInt32.MaxValue 欄位

定義

代表 UInt32 最大的可能值。Represents the largest possible value of UInt32. 這個欄位為常數。This field is constant.

public: System::UInt32 MaxValue = 4294967295;
public const uint MaxValue = 4294967295;
val mutable MaxValue : uint32
Public Const MaxValue As UInteger  = 4294967295

欄位值

UInt32

範例

下列範例 MinValue 會使用和 MaxValue 欄位來驗證 Int64 值是否在類型的範圍內, UInt32 再執行類型轉換。The following example uses the MinValue and MaxValue fields to verify that an Int64 value is within the range of the UInt32 type before it performs a type conversion. 此驗證會 OverflowException 在執行時間防止。This verification prevents an OverflowException at run time.

long longValue = long.MaxValue / 2;
uint integerValue; 

if (longValue <= uint.MaxValue && 
    longValue >= uint.MinValue)
{    
   integerValue = (uint) longValue;
   Console.WriteLine("Converted long integer value to {0:n0}.", 
                     integerValue);
}   
else
{
   uint rangeLimit;
   string relationship;
   
   if (longValue > uint.MaxValue)
   {
      rangeLimit = uint.MaxValue;
      relationship = "greater";
   }   
   else
   {
      rangeLimit = uint.MinValue;
      relationship = "less";
   }       

   Console.WriteLine("Conversion failure: {0:n0} is {1} than {2:n0}",  
                     longValue, 
                     relationship, 
                     rangeLimit);
}       
Dim longValue As Long = Long.MaxValue \ 2
Dim integerValue As UInteger 

If longValue <= UInteger.MaxValue AndAlso _
   longValue >= UInteger.MinValue Then
   integerValue = CUInt(longValue)
   Console.WriteLine("Converted long integer value to {0:n0}.", _
                     integerValue)
Else
   Dim rangeLimit As UInteger
   Dim relationship As String
   
   If longValue > UInteger.MaxValue Then
      rangeLimit = UInteger.MaxValue
      relationship = "greater"
   Else
      rangeLimit = UInteger.MinValue
      relationship = "less"
   End If       

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

備註

這個常數的值是 4294967295;也就是十六進位0xFFFFFFFF。The value of this constant is 4,294,967,295; that is, hexadecimal 0xFFFFFFFF.

適用於

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