Convert.ToInt16 Method (Double)


Converts the value of the specified double-precision floating-point number to an equivalent 16-bit signed integer.

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

Public Shared Function ToInt16 (
	value As Double
) As Short


Type: System.Double

The double-precision floating-point number to convert.

Return Value

Type: System.Int16

value, rounded to the nearest 16-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.

Exception Condition

value is greater than Int16.MaxValue or less than Int16.MinValue.

The following example converts each element in an array of Double values to a 16-bit signed integer. The example illustrates that any fractional part of a Double value is rounded before performing the conversion.

Dim values() As Double = { Double.MinValue, -1.38e10, -1023.299, -12.98, _
                           0, 9.113e-16, 103.919, 17834.191, Double.MaxValue }
Dim result As Short

For Each value As Double In values
      result = Convert.ToInt16(value)
      Console.WriteLine("Converted {0} to {1}.", value, result)
   Catch e As OverflowException
      Console.WriteLine("{0} is outside the range of the Int16 type.", value)
   End Try   
'       -1.79769313486232E+308 is outside the range of the Int16 type.
'       -13800000000 is outside the range of the Int16 type.
'       Converted -1023.299 to -1023.
'       Converted -12.98 to -13.
'       Converted 0 to 0.
'       Converted 9.113E-16 to 0.
'       Converted 103.919 to 104.
'       Converted 17834.191 to 17834.
'       1.79769313486232E+308 is outside the range of the Int16 type.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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