Convert.ToDecimal Method (Double)
Converts the value of the specified double-precision floating-point number to an equivalent decimal number.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
- Type: System.Double
The double-precision floating-point number to convert.
| Exception | Condition |
|---|---|
| OverflowException | value is greater than Decimal.MaxValue or less than Decimal.MinValue. |
The Decimal value returned by this method contains a maximum of 15 significant digits. If the value parameter contains more than 15 significant digits, it is rounded using rounding to nearest. The following example illustrates how the Convert.ToDecimal(Double) method uses rounding to nearest to return a Decimal value with 15 significant digits.
Console.WriteLine(Convert.ToDecimal(123456789012345500.12D)); // Displays 123456789012346000 Console.WriteLine(Convert.ToDecimal(123456789012346500.12D)); // Displays 123456789012346000 Console.WriteLine(Convert.ToDecimal(10030.12345678905D)); // Displays 10030.123456789 Console.WriteLine(Convert.ToDecimal(10030.12345678915D)); // Displays 10030.1234567892
The following example converts a Double value to a Decimal value.
public void ConvertDoubleDecimal(decimal decimalVal){ double doubleVal; // Decimal to double conversion cannot overflow. doubleVal = System.Convert.ToDouble(decimalVal); System.Console.WriteLine("{0} as a double is: {1}", decimalVal, doubleVal); // Conversion from double to decimal can overflow. try { decimalVal = System.Convert.ToDecimal(doubleVal); System.Console.WriteLine ("{0} as a decimal is: {1}", doubleVal, decimalVal); } catch (System.OverflowException) { System.Console.WriteLine( "Overflow in double-to-double conversion."); } }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
