Convert.ToDouble Method (Int32)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Converts the value of the specified 32-bit signed integer to an equivalent double-precision floating point number.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
Public Shared Function ToDouble ( _
value As Integer _
) As Double
public static double ToDouble(
int value
)
Parameters
- value
Type: System..::.Int32
A 32-bit signed integer.
Return Value
Type: System..::.Double
A double-precision floating point number equivalent to the value of value.
Examples
The following code sample illustrates the conversion of an Int32 value to a Double one, using ToDouble.
Public Sub ConvertDoubleInt(ByVal doubleVal As Double)
Dim intVal As Integer = 0
' Double to Integer conversion can overflow.
Try
intVal = System.Convert.ToInt32(doubleVal)
outputBlock.Text &= String.Format("{0} as an Integer is: {1}", _
doubleVal, intVal) & vbCrLf
Catch exception As System.OverflowException
outputBlock.Text &= String.Format( _
"Overflow in Double-to-Byte conversion.") & vbCrLf
End Try
' Integer to Double conversion cannot overflow.
doubleVal = System.Convert.ToDouble(intVal)
outputBlock.Text &= String.Format("{0} as a Double is: {1}", _
intVal, doubleVal) & vbCrLf
End Sub
public void ConvertDoubleInt(double doubleVal)
{
int intVal = 0;
// Double to int conversion can overflow.
try
{
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";
}
Version Information
Windows Phone OS
Supported in: 8.1, 8.0, 7.1, 7.0
Platforms
Windows Phone