Windows

powershell

 (New-Object System.Globalization.JapaneseCalendar).eras.count

Grapecity .NET 系

・CalendarGrid for Windows Forms 1.0J
・El Tabelle for .NET 3.0J
・El Tabelle MultiRow 4.0J
・El Tabelle Sheet 4.0J
・El Tabelle Sheet for Windows Forms 4.1J
・InputMan for .NET 3.0J
・InputMan for .NET Windows Forms 4.0J
・InputMan for Windows Forms 5.0J／6.0J／7.0J／8.0J／10.0J
・InputMan for .NET Web Forms 2.0J
・InputMan for ASP.NET 3.0J／7.0J／8.0J／10.0J
・InputMan for WPF 1.0J
・InputMan for Silverlight 1.0J
・MultiRow for Windows Forms 5.0J／6.0J／7.0J／8.0J／10.0J
・MultiRow for ASP.NET 1.0J
・PlusPak for Windows Forms 5.0J／6.0J／7.0J／8.0J／10.0J
・SPREAD for Windows Forms 5.0J／7.0J／8.0J／10.0J
・SPREAD for WPF 1.0J／2.0J
https://www.grapecity.com/tools/support/technical/knowledge_detail.asp?id=30516

Component One

[Microsoft.TechNet]Japan New Era Name Support Blog

日本マイクロソフトの新元号 (和暦) 対応に関するサポート情報のブログです
https://blogs.technet.microsoft.com/jperablog/