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ToDouble Method
See Also  Example Support Options
FarPoint.CalcEngine Assembly > FarPoint.CalcEngine Namespace > CalcConvert Class : ToDouble Method


value
Value to convert

Glossary Item Box

Converts the specified value to a double-precision, floating-point number.

Syntax

Visual Basic (Declaration) 
Public Shared Function ToDouble( _
   ByVal value As Object _
) As Double
Visual Basic (Usage)Copy Code
Dim value As Object
Dim value As Double
 
value = CalcConvert.ToDouble(value)
C# 
public static double ToDouble( 
   object value
)

Parameters

value
Value to convert

Return Value

Double-precision, floating point number equivalent to the specified value

Exceptions

ExceptionDescription
System.InvalidCastExceptionValue cannot be converted.

Example

This example converts the value to be double.
C#Copy Code
public class CubeFunctionInfo : FunctionInfo 
    {
        public override string Name { get { return "CUBE"; } }
        public override int MinArgs { get { return 1; } }
        public override int MaxArgs { get { return 1; } }
        public override object Evaluate (object[] args)
        {
            double num = CalcConvert.ToDouble(args[0]);
            return num * num * num;
        }
    }
Visual BasicCopy Code
Public Class CubeFunctionInfo
   Inherits FarPoint.CalcEngine.FunctionInfo

   Public Overrides ReadOnly Property Name() As String
   Get
   Return "CUBE"
   End Get
   End Property

   Public Overrides ReadOnly Property MinArgs() As Integer
   Get
   Return 1
   End Get
   End Property

   Public Overrides ReadOnly Property MaxArgs() As Integer
   Get
   Return 1
   End Get
   End Property

   Public Overrides Function Evaluate(ByVal args() As Object) As Object
   Dim num As Double = FarPoint.CalcEngine.CalcConvert.ToDouble(args(0))
   Return num * num * num
   End Function
End Class

Requirements

Target Platforms: Windows 7, Windows 8, Windows Vista, Windows Server 2000, Windows 2000 Professional, Windows XP Professional, Windows NT 4.0 Workstation, SP6, Windows NT 4.0 Server, SP6

See Also

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