Convert.ToInt32 Method (Double)

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)

public static int ToInt32(
	double 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.


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 void ConvertDoubleInt(double doubleVal)

   int intVal = 0;
   // Double to int conversion can overflow.
      intVal = System.Convert.ToInt32(doubleVal);
      outputBlock.Text += String.Format("{0} as an int is: {1}",
         doubleVal, intVal) + "\n";
   catch (System.OverflowException)
      outputBlock.Text += String.Format(
         "Overflow in double-to-int conversion.") + "\n";

   // Int to double conversion cannot overflow.
   doubleVal = System.Convert.ToDouble(intVal);
   outputBlock.Text += String.Format("{0} as a double is: {1}",
      intVal, doubleVal) + "\n";


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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