Convert.ToInt32 Method (Double)
.NET Framework 4.5
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)
Parameters
- value
- Type: System.Double
The double-precision floating-point number to convert.
Return Value
Type: System.Int32value, 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.
| Exception | Condition |
|---|---|
| OverflowException | value is greater than Int32.MaxValue or less than Int32.MinValue. |
The following example attempts to convert each element in an array of Double values to an integer.
double[] values= { Double.MinValue, -1.38e10, -1023.299, -12.98, 0, 9.113e-16, 103.919, 17834.191, Double.MaxValue }; int result; foreach (double value in values) { try { result = Convert.ToInt32(value); Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", value.GetType().Name, value, result.GetType().Name, result); } catch (OverflowException) { Console.WriteLine("{0} is outside the range of the Int32 type.", value); } } // -1.79769313486232E+308 is outside the range of the Int32 type. // -13800000000 is outside the range of the Int32 type. // Converted the Double value '-1023.299' to the Int32 value -1023. // Converted the Double value '-12.98' to the Int32 value -13. // Converted the Double value '0' to the Int32 value 0. // Converted the Double value '9.113E-16' to the Int32 value 0. // Converted the Double value '103.919' to the Int32 value 104. // Converted the Double value '17834.191' to the Int32 value 17834. // 1.79769313486232E+308 is outside the range of the Int32 type.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
