Decimal Explicit Conversion (Decimal to Int32)

Converts a Decimal to a 32-bit signed integer.

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

public static explicit operator int (
	decimal value


Type: System.Decimal
A Decimal to convert.

Return Value

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


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

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.

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 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.
         Int32Value = (int)argument;
      catch (Exception ex)
         Int32Value = GetExceptionType(ex);

      // Convert the argument to a uint value.
         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


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

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

Community Additions