ToInt64 Method (Single)

Convert.ToInt64 Method (Single)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Converts the value of the specified single-precision floating point number to an equivalent 64-bit signed integer.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Shared Function ToInt64 ( _
	value As Single _
) As Long

Parameters

value
Type: System.Single
A single-precision floating point number.

Return Value

Type: System.Int64
value rounded to the nearest 64-bit signed 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.

ExceptionCondition
OverflowException

value is greater than Int64.MaxValue or less than Int64.MinValue.

The following code sample illustrates the conversion of a Single value to an Int64, using ToInt64.


Public Sub ConvertLongFloat(ByVal longVal As Long)

   Dim floatVal As Single

   ' A conversion from Long to float cannot overflow.
   floatVal = System.Convert.ToSingle(longVal)
   outputBlock.Text &= String.Format("{0} as a float is {1}", _
                             longVal, floatVal) & vbCrLf

   ' A conversion from float to long can overflow.
   Try
      longVal = System.Convert.ToInt64(floatVal)
      outputBlock.Text &= String.Format("{0} as a Long is {1}", _
                                floatVal, longVal) & vbCrLf
   Catch exception As System.OverflowException
      outputBlock.Text &= String.Format( _
          "Overflow in float-to-long conversion.") & vbCrLf
   End Try
End Sub


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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