Int32.MinValue 欄位

public: int MinValue = -2147483648;

public const int MinValue = -2147483648;

val mutable MinValue : int

Public Const MinValue As Integer  = -2147483648

欄位值

範例

下列範例會使用 MinValue 屬性，以防止 OverflowException 轉換成 Int32 值。The following example uses the MinValue property to prevent an OverflowException when converting to an Int32 value.

using namespace System;

void main()
{
   array<Int64>^ numbersToConvert = gcnew array<Int64> { 162345, 32183, -54000, 
                                                         Int64::MaxValue/2 };
   Int32 newNumber;
   for each (Int64 number in numbersToConvert)
   {
      if ((number >= Int32::MinValue) && (number <= Int32::MaxValue))
      {
         newNumber = Convert::ToInt32(number);
         Console::WriteLine("Successfully converted {0} to an Int32.", 
                           newNumber);
      }
      else
      {
         Console::WriteLine("Unable to convert {0} to an Int32.", number);
      }
   }
}
// The example displays the following output to the console:
//    Successfully converted 162345 to an Int32.
//    Successfully converted 32183 to an Int32.
//    Successfully converted -54000 to an Int32.
//    Unable to convert 4611686018427387903 to an Int32.

using System;

public class Class1
{
   public static void Main()
   {
      long[] numbersToConvert = { 162345, 32183, -54000, Int64.MaxValue/2 };
      int newNumber;
      foreach (long number in numbersToConvert)
      {
         if (number >= Int32.MinValue && number <= Int32.MaxValue)
         {
            newNumber = Convert.ToInt32(number);
            Console.WriteLine("Successfully converted {0} to an Int32.", 
                              newNumber);
         }
         else
         {
            Console.WriteLine("Unable to convert {0} to an Int32.", number);
         }
      }
   }
}
// The example displays the following output to the console:
//    Successfully converted 162345 to an Int32.
//    Successfully converted 32183 to an Int32.
//    Successfully converted -54000 to an Int32.
//    Unable to convert 4611686018427387903 to an Int32.

Module modMain
   Public Sub Main()
      Dim numbersToConvert() As Long = { 162345, 32183, -54000, Int64.MaxValue\2 }
      Dim newNumber As Integer
      For Each number As Long In NumbersToConvert
         If number >= Int32.MinValue And number <= Int32.MaxValue Then
            newNumber = Convert.ToInt32(number)
            Console.WriteLine("Successfully converted {0} to an Int32.", _
                              newNumber)
         Else
            Console.WriteLine("Unable to convert {0} to an Int32.", number)
         End If                     
      Next
   End Sub
End Module
' The example displays the following output to the console:
'       Successfully converted 162345 to an Int32.
'       Successfully converted 32183 to an Int32.
'       Successfully converted -54000 to an Int32.
'       Unable to convert 4611686018427387903 to an Int32.

備註

這個常數的值是-2147483648;也就是十六進位0x80000000。The value of this constant is -2,147,483,648; that is, hexadecimal 0x80000000.

適用於

另請參閱

• MaxValue