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Convert.ToInt16 Method (Double)

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

Namespace:  System
Assemblies:   System.Runtime.Extensions (in System.Runtime.Extensions.dll)
  mscorlib (in mscorlib.dll)

public static short ToInt16(
	double value
)

Parameters

value
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.

ExceptionCondition
OverflowException

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.

double[] values = { Double.MinValue, -1.38e10, -1023.299, -12.98,
                    0, 9.113e-16, 103.919, 17834.191, Double.MaxValue };
short result;

foreach (double value in values)
{
   try {
      result = Convert.ToInt16(value);
      Console.WriteLine("Converted {0} to {1}.", value, result);
   }   
   catch (OverflowException)
   {
      Console.WriteLine("{0} is outside the range of the Int16 type.", value);
   }   
}                                 
//       -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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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