ToInt32 Method (Double)

Convert.ToInt32 Method (Double)

[ 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 double-precision floating point number to an equivalent 32-bit signed integer.

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

'Declaration
Public Shared Function ToInt32 ( _
	value As Double _
) As Integer

Parameters

value
Type: System.Double
A double-precision floating point number.

Return Value

Type: System.Int32
value rounded to the nearest 32-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 Int32.MaxValue or less than Int32.MinValue.

The following code sample illustrates the conversion of a Double value to an Int32, using ToInt32.


Public Sub ConvertDoubleInt(ByVal doubleVal As Double)

   Dim intVal As Integer = 0
   ' Double to Integer conversion can overflow.
   Try
      intVal = System.Convert.ToInt32(doubleVal)
      outputBlock.Text &= String.Format("{0} as an Integer is: {1}", _
                                doubleVal, intVal) & vbCrLf
   Catch exception As System.OverflowException
      outputBlock.Text &= String.Format( _
          "Overflow in Double-to-Byte conversion.") & vbCrLf
   End Try

   ' Integer to Double conversion cannot overflow.
   doubleVal = System.Convert.ToDouble(intVal)
   outputBlock.Text &= String.Format("{0} as a Double is: {1}", _
                             intVal, doubleVal) & vbCrLf
End Sub


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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