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Decimal Explicit Conversion (Double to Decimal)
Visual Studio 2010
Converts a double-precision floating-point number to a Decimal.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
- Type: System::Double
The double-precision floating-point number to convert.
| Exception | Condition |
|---|---|
| OverflowException | value is less than MinValue or greater than MaxValue. -or- value is Double::NaN, Double::PositiveInfinity, or Double::NegativeInfinity. |
The following code example converts Double values to Decimal numbers using the Double to Decimal conversion. This conversion requires the op_Explicit operator in Visual Basic.
// Example of the explicit conversion from double to Decimal. using namespace System; #define formatter "{0,25:E16}{1,33}" // Get the exception type name; remove the namespace prefix. String^ GetExceptionType( Exception^ ex ) { String^ exceptionType = ex->GetType()->ToString(); return exceptionType->Substring( exceptionType->LastIndexOf( '.' ) + 1 ); } // Convert the double argument; catch exceptions that are thrown. void DecimalFromDouble( double argument ) { Object^ decValue; // Convert the double argument to a Decimal value. try { decValue = (Decimal)argument; } catch ( Exception^ ex ) { decValue = GetExceptionType( ex ); } Console::WriteLine( formatter, argument, decValue ); } int main() { Console::WriteLine( "This example of the explicit conversion from double " "to Decimal \ngenerates the following output.\n" ); Console::WriteLine( formatter, "double argument", "Decimal value" ); Console::WriteLine( formatter, "---------------", "-------------" ); // Convert double values and display the results. DecimalFromDouble( 1.234567890123E-30 ); DecimalFromDouble( 1.2345678901234E-25 ); DecimalFromDouble( 1.23456789012345E-20 ); DecimalFromDouble( 1.234567890123456E-10 ); DecimalFromDouble( 1.2345678901234567 ); DecimalFromDouble( 1.23456789012345678E+12 ); DecimalFromDouble( 1.234567890123456789E+28 ); DecimalFromDouble( 1.234567890123456789E+30 ); } /* This example of the explicit conversion from double to Decimal generates the following output. double argument Decimal value --------------- ------------- 1.2345678901230000E-030 0 1.2345678901233999E-025 0.0000000000000000000000001235 1.2345678901234499E-020 0.0000000000000000000123456789 1.2345678901234560E-010 0.000000000123456789012346 1.2345678901234567E+000 1.23456789012346 1.2345678901234568E+012 1234567890123.46 1.2345678901234568E+028 12345678901234600000000000000 1.2345678901234569E+030 OverflowException */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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