FarPoint.CalcEngine アセンブリ > FarPoint.CalcEngine 名前空間 > CalcConvert クラス : ToDouble メソッド |
'使用法 Dim value As Object Dim value As Double value = CalcConvert.ToDouble(value)
例外 | 説明 |
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System.InvalidCastException | 値を変換できません。 |
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; } }
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