AddCustomFunction Method (ICustomFunctionSupport)

Visual Basic
C#

'Declaration
 
Sub AddCustomFunction( _
   ByVal functionInfo As FunctionInfo _
)

'Usage
 
Dim instance As ICustomFunctionSupport
Dim functionInfo As FunctionInfo
 
instance.AddCustomFunction(functionInfo)

void AddCustomFunction( 
   FunctionInfo functionInfo
)

Parameters

functionInfo: Function to add

This example adds a custom function.

C#

public class CubeFunctionInfo : FarPoint.CalcEngine.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 = FarPoint.CalcEngine.CalcConvert.ToDouble(args[0]);
        return num * num * num;
      }
    }

FarPoint.Win.Spread.Model.ICustomFunctionSupport cfs;
cfs = (FarPoint.Win.Spread.Model.ICustomFunctionSupport)fpSpread1.ActiveSheet.Models.Data;
cfs.AddCustomFunction(new CubeFunctionInfo());
fpSpread1.ActiveSheet.SetFormula(1, 1, "CUBE(4)");

Visual Basic

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

Dim cfs As FarPoint.Win.Spread.Model.ICustomFunctionSupport
cfs = FpSpread1.ActiveSheet.Models.Data
cfs.AddCustomFunction(New CubeFunctionInfo())
FpSpread1.ActiveSheet.SetFormula(1, 1, "CUBE(4)")

Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows Server 2012 R2, Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

Reference

ICustomFunctionSupport Interface
ICustomFunctionSupport Members