Decimal.ToInt32(Decimal) Method

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: Decimal.cs

Source:: Decimal.cs

Source:: Decimal.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Converts the value of the specified Decimal to the equivalent 32-bit signed integer.

public:
 static int ToInt32(System::Decimal d);

public static int ToInt32 (decimal d);

static member ToInt32 : decimal -> int

Public Shared Function ToInt32 (d As Decimal) As Integer

Parameters

d: Decimal

The decimal number to convert.

Returns

Int32

A 32-bit signed integer equivalent to the value of d.

Exceptions

OverflowException

d is less than Int32.MinValue or greater than Int32.MaxValue.

Examples

The following example uses the ToInt32 method to convert decimal numbers to Int32 values.

using System;

class Example
{
   public static void Main( )
   {
      decimal[] values = { 123m, new decimal(123000, 0, 0, false, 3),
                           123.999m, 4294967295.999m, 4294967296m,
                           4294967296m, 2147483647.999m, 2147483648m,
                           -0.999m, -1m, -2147483648.999m, -2147483649m };

      foreach (var value in values) {
         try {
            int number = Decimal.ToInt32(value);
            Console.WriteLine("{0} --> {1}", value, number);
         }
         catch (OverflowException e)
         {
             Console.WriteLine("{0}: {1}", e.GetType().Name, value);
         }
      }
   }
}
// The example displays the following output:
//      123 --> 123
//      123.000 --> 123
//      123.999 --> 123
//      OverflowException: 4294967295.999
//      OverflowException: 4294967296
//      OverflowException: 4294967296
//      2147483647.999 --> 2147483647
//      OverflowException: 2147483648
//      -0.999 --> 0
//      -1 --> -1
//      -2147483648.999 --> -2147483648
//      OverflowException: -2147483649

open System

let values = 
    [ 123m; Decimal(123000, 0, 0, false, 3uy)
      123.999m; 4294967295.999m; 4294967296m
      4294967296m; 2147483647.999m; 2147483648m
      -0.999m; -1m; -2147483648.999m; -2147483649m ]

for value in values do
    try
        let number = Decimal.ToInt32 value
        printfn $"{value} --> {number}"
    with :? OverflowException as e ->
        printfn $"{e.GetType().Name}: {value}"

// The example displays the following output:
//      123 --> 123
//      123.000 --> 123
//      123.999 --> 123
//      OverflowException: 4294967295.999
//      OverflowException: 4294967296
//      OverflowException: 4294967296
//      2147483647.999 --> 2147483647
//      OverflowException: 2147483648
//      -0.999 --> 0
//      -1 --> -1
//      -2147483648.999 --> -2147483648
//      OverflowException: -2147483649

Module Example
   Public Sub Main()
      Dim values() As Decimal = { 123d, New Decimal(123000, 0, 0, false, 3), 
                                  123.999d, 4294967295.999d, 4294967296d,
                                  4294967296d, 2147483647.999d, 2147483648d, 
                                  -0.999d, -1d, -2147483648.999d, -2147483649d }

      For Each value In values
         Try
            Dim number As Integer = Decimal.ToInt32(value)
            Console.WriteLine("{0} --> {1}", value, number)       
         Catch e As OverflowException
             Console.WriteLine("{0}: {1}", e.GetType().Name, value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'       123 --> 123
'       123.000 --> 123
'       123.999 --> 123
'       OverflowException: 4294967295.999
'       OverflowException: 4294967296
'       OverflowException: 4294967296
'       2147483647.999 --> 2147483647
'       OverflowException: 2147483648
'       -0.999 --> 0
'       -1 --> -1
'       -2147483648.999 --> -2147483648
'       OverflowException: -2147483649
'

Remarks

The return value is the integral part of the decimal value; fractional digits are truncated.

You can also convert a Decimal value to a 32-bit integer by using the Explicit assignment operator. Because the operator performs a narrowing conversion, you must use a casting operator in C# or a conversion function in Visual Basic.

Applies to

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