Export (0) Print
Expand All

Convert.ToUInt32 Method (Double)

Converts the value of the specified double-precision floating-point number to an equivalent 32-bit unsigned integer.

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public static uint ToUInt32(
	double value
)

Parameters

value
Type: System.Double

The double-precision floating-point number to convert.

Return Value

Type: System.UInt32
value, rounded to the nearest 32-bit unsigned 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 less than zero or greater than UInt32.MaxValue.

The following example attempts to convert each element in an array of Double values to an unsigned integer.

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

foreach (double value in values)
{
   try {
      result = Convert.ToUInt32(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("The {0} value {1} is outside the range of the UInt32 type.",
                        value.GetType().Name, value);
   }   
}                                 
// The example displays the following output: 
//    The Double value -1.79769313486232E+308 is outside the range of the UInt32 type. 
//    The Double value -13800000000 is outside the range of the UInt32 type. 
//    The Double value -1023.299 is outside the range of the UInt32 type. 
//    The Double value -12.98 is outside the range of the UInt32 type. 
//    Converted the Double value '0' to the UInt32 value 0. 
//    Converted the Double value '9.113E-16' to the UInt32 value 0. 
//    Converted the Double value '103.919' to the UInt32 value 104. 
//    Converted the Double value '17834.191' to the UInt32 value 17834. 
//    The Double value 1.79769313486232E+308 is outside the range of the UInt32 type.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, 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.

Show:
© 2014 Microsoft