[System.Diagnostics.DebuggerDisplayAttribute(Value="Formula: {ToString(),nq}",
Name="",
Type="",
Target=,
TargetTypeName="")]
public abstract class Formula
'宣言
<System.Diagnostics.DebuggerDisplayAttribute(Value="Formula: {ToString(),nq}",
Name="",
Type="",
Target=,
TargetTypeName="")>
Public MustInherit Class Formula