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Decimal Explicit Conversion (Double to Decimal)
.NET Framework (current version)
Defines an explicit conversion of 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 Decimal::MinValue or greater than Decimal::MaxValue. -or- value is Double::NaN, Double::PositiveInfinity, or Double::NegativeInfinity. |
The following example converts Double values to Decimal numbers by 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 */
Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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