Convert.ToUInt64 Method (Single)
.NET Framework (current version)
Converts the value of the specified single-precision floating-point number to an equivalent 64-bit unsigned integer.
This API is not CLS-compliant.
Assembly: mscorlib (in mscorlib.dll)
<CLSCompliantAttribute(False)> Public Shared Function ToUInt64 ( value As Single ) As ULong
Parameters
- value
-
Type:
System.Single
The single-precision floating-point number to convert.
Return Value
Type: System.UInt64value, rounded to the nearest 64-bit unsigned integer. If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is converted to 4, and 5.5 is converted to 6.
| Exception | Condition |
|---|---|
| OverflowException | value is less than zero or greater than UInt64.MaxValue. |
The following example attempts to convert each element in an array of Single values to an unsigned long integer. The output shows that fractional values are rounded before the conversion is performed.
Dim values() As Single = { Single.MinValue, -1.38e10, -1023.299, -12.98, _ 0, 9.113e-16, 103.919, 17834.191, Single.MaxValue } Dim result As ULong For Each value As Single In values Try result = Convert.ToUInt64(value) Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _ value.GetType().Name, value, result.GetType().Name, result) Catch e As OverflowException Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _ value.GetType().Name, value) End Try Next ' The example displays the following output: ' The Single value -3.402823E+38 is outside the range of the UInt64 type. ' The Single value -1.38E+10 is outside the range of the UInt64 type. ' The Single value -1023.299 is outside the range of the UInt64 type. ' The Single value -12.98 is outside the range of the UInt64 type. ' Converted the Single value 0 to the UInt64 value 0. ' Converted the Single value 9.113E-16 to the UInt64 value 0. ' Converted the Single value 103.919 to the UInt64 value 104. ' Converted the Single value 17834.19 to the UInt64 value 17834. ' The Single value 3.402823E+38 is outside the range of the UInt64 type.
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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