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Decimal Explicit Conversion (Decimal to Int32)

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Converts a Decimal to a 32-bit signed integer.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

Syntax

'Declaration
Public Shared Narrowing Operator CType ( _
    value As Decimal _
) As Integer

public static explicit operator int (
    decimal value
)

Parameters

Return Value

Type: System.Int32
A 32-bit signed integer that represents the converted Decimal.

Exceptions

Exception Condition
OverflowException

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

Remarks

This operator supports the explicit conversion of a Decimal to a Int32. The syntax for such explicit conversions is language-dependent, and individual language compilers can provide different implementations and return different results. The example illustrates the different return values when you explicitly convert a Decimal value to an Int32 value by using C# and Visual Basic. To perform a conversion that is independent of language, you can call the ToInt32 or the Convert.ToInt32(Decimal) method.

Examples

The following code example converts Decimal numbers to Int32 values using the explicit Decimal to Int32 conversion.

' Example of the explicit conversions from Decimal to Integer and 
' Decimal to UInteger.
Module Example

   Const formatter As String = "{0,17}{1,19}{2,19}"

   ' Convert the decimal argument catch exceptions that are thrown.
   Public Sub DecimalToU_Int32(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal argument As Decimal)
      Dim Int32Value As Object
      Dim UInt32Value As Object

      ' Convert the argument to an int value.
      Try
         Int32Value = CInt(argument)
      Catch ex As Exception
         Int32Value = ex.GetType().Name
      End Try

      ' Convert the argument to a uint value.
      Try
         UInt32Value = CUInt(argument)
      Catch ex As Exception
         UInt32Value = ex.GetType().Name
      End Try

      outputBlock.Text += String.Format(formatter, argument, _
          Int32Value, UInt32Value) + vbCrLf
   End Sub

   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      outputBlock.Text += String.Format(formatter, "Decimal Argument", _
          "Integer/Exception", "UInteger/Exception") + vbCrLf
      outputBlock.Text += String.Format(formatter, "----------------", _
          "-------------", "--------------") + vbCrLf

      ' Convert decimal values and display the results.
      DecimalToU_Int32(outputBlock, 123D)
      DecimalToU_Int32(outputBlock, New Decimal(123000, 0, 0, False, 3))
      DecimalToU_Int32(outputBlock, 123.999D)
      DecimalToU_Int32(outputBlock, 4294967295.999D)
      DecimalToU_Int32(outputBlock, 4294967296D)
      DecimalToU_Int32(outputBlock, 2147483647.999D)
      DecimalToU_Int32(outputBlock, 2147483648D)
      DecimalToU_Int32(outputBlock, -0.999D)
      DecimalToU_Int32(outputBlock, -1D)
      DecimalToU_Int32(outputBlock, -2147483648.999D)
      DecimalToU_Int32(outputBlock, -2147483649D)
   End Sub
End Module
' The example displays the following output:
'     Decimal Argument  Integer/Exception UInteger/Exception
'     ----------------      -------------     --------------
'                  123                123                123
'              123.000                123                123
'              123.999                124                124
'       4294967295.999  OverflowException  OverflowException
'           4294967296  OverflowException  OverflowException
'       2147483647.999  OverflowException         2147483648
'           2147483648  OverflowException         2147483648
'               -0.999                 -1  OverflowException
'                   -1                 -1  OverflowException
'      -2147483648.999  OverflowException  OverflowException
'          -2147483649  OverflowException  OverflowException

// Example of the explicit conversions from decimal to int and 
// decimal to uint.
using System;

class Example
{
   const string formatter = "{0,17}{1,19}{2,19}";

   // Get the exception type name; remove the namespace prefix.
   public static string GetExceptionType(Exception ex)
   {
      string exceptionType = ex.GetType().ToString();
      return exceptionType.Substring(
          exceptionType.LastIndexOf('.') + 1);
   }

   // Convert the decimal argument; catch exceptions that are thrown.
   public static void DecimalToU_Int32(System.Windows.Controls.TextBlock outputBlock, decimal argument)
   {
      object Int32Value;
      object UInt32Value;

      // Convert the argument to an int value.
      try
      {
         Int32Value = (int)argument;
      }
      catch (Exception ex)
      {
         Int32Value = GetExceptionType(ex);
      }

      // Convert the argument to a uint value.
      try
      {
         UInt32Value = (uint)argument;
      }
      catch (Exception ex)
      {
         UInt32Value = GetExceptionType(ex);
      }

      outputBlock.Text += String.Format(formatter, argument,
          Int32Value, UInt32Value) + "\n";
   }

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      outputBlock.Text += String.Format(
          "This example of the explicit conversions from decimal " +
          "to int \nand decimal to uint generates the following " +
          "output. It displays \nseveral converted decimal " +
          "values.\n") + "\n";
      outputBlock.Text += String.Format(formatter, "decimal argument",
          "int/exception", "uint/exception") + "\n";
      outputBlock.Text += String.Format(formatter, "----------------",
          "-------------", "--------------") + "\n";

      // Convert decimal values and display the results.
      DecimalToU_Int32(outputBlock, 123M);
      DecimalToU_Int32(outputBlock, new decimal(123000, 0, 0, false, 3));
      DecimalToU_Int32(outputBlock, 123.999M);
      DecimalToU_Int32(outputBlock, 4294967295.999M);
      DecimalToU_Int32(outputBlock, 4294967296M);
      DecimalToU_Int32(outputBlock, 2147483647.999M);
      DecimalToU_Int32(outputBlock, 2147483648M);
      DecimalToU_Int32(outputBlock, -0.999M);
      DecimalToU_Int32(outputBlock, -1M);
      DecimalToU_Int32(outputBlock, -2147483648.999M);
      DecimalToU_Int32(outputBlock, -2147483649M);
   }
}

/*
This example of the explicit conversions from decimal to int
and decimal to uint generates the following output. It displays
several converted decimal values.

 decimal argument      int/exception     uint/exception
 ----------------      -------------     --------------
              123                123                123
          123.000                123                123
          123.999                123                123
   4294967295.999  OverflowException         4294967295
       4294967296  OverflowException  OverflowException
   2147483647.999         2147483647         2147483647
       2147483648  OverflowException         2147483648
           -0.999                  0                  0
               -1                 -1  OverflowException
  -2147483648.999        -2147483648  OverflowException
      -2147483649  OverflowException  OverflowException
*/

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.