Convert.ToDecimal Method (Double)
.NET Framework (current version)
Converts the value of the specified double-precision floating-point number to an equivalent decimal number.
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(123456789012345500.12R)) ' Displays 123456789012346000 Console.WriteLine(Convert.ToDecimal(123456789012346500.12R)) ' Displays 123456789012346000 Console.WriteLine(Convert.ToDecimal(10030.12345678905R)) ' Displays 10030.123456789 Console.WriteLine(Convert.ToDecimal(10030.12345678915R)) ' Displays 10030.1234567892
The following example converts a Double value to a Decimal value.
Public Sub ConvertDoubleDecimal(ByVal decimalVal As Decimal) Dim doubleVal As Double ' 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 exception As System.OverflowException System.Console.WriteLine( _ "Overflow in Double-to-Decimal conversion.") End Try End Sub
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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