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Decimal.ToInt64 Method (Decimal)
.NET Framework (current version)
Converts the value of the specified Decimal to the equivalent 64-bit signed integer.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- d
-
Type:
System.Decimal
The decimal number to convert.
| Exception | Condition |
|---|---|
| OverflowException | d is less than Int64.MinValue or greater than Int64.MaxValue. |
The return value is the integral part of the decimal value; fractional digits are truncated.
You can also convert a Decimal value to a 64-bit integer by using the Narrowing(Decimal to Int64) assignment operator. Because the operator performs a narrowing conversion, you must use a casting operator in C# or a conversion function in Visual Basic.
The following example uses the ToInt64 method to convert decimal numbers to Int64 values.
Module Example Public Sub Main() Dim values() As Decimal = { 123d, New Decimal(123000, 0, 0, false, 3), 123.999d, 18446744073709551615.999d, 18446744073709551616d, 9223372036854775807.999d, 9223372036854775808d, -0.999d, -1d, -9223372036854775808.999d, -9223372036854775809d } For Each value In values Try Dim number As Long = Decimal.ToInt64(value) Console.WriteLine("{0} --> {1}", value, number) Catch e As OverflowException Console.WriteLine("{0}: {1}", e.GetType().Name, value) End Try Next End Sub End Module ' The example displays the following output: ' 123 --> 123 ' 123.000 --> 123 ' 123.999 --> 123 ' OverflowException: 18446744073709551615.999 ' OverflowException: 18446744073709551616 ' 9223372036854775807.999 --> 9223372036854775807 ' OverflowException: 9223372036854775808 ' -0.999 --> 0 ' -1 --> -1 ' -9223372036854775808.999 --> -9223372036854775808 ' OverflowException: -9223372036854775809
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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