using Application = Microsoft.Office.Interop.Excel.Application; namespace ExcelAddIn.Tools; public class Button3Tool : Tool { private readonly Application app; public Button3Tool() { app = (Application)ExcelDnaUtil.Application; } public override void Execute() { for (int i = 0; i < 10;) { Thread.Sleep(400); app.StatusBar = $"Выполнено {++i * 10}%..."; } } protected override void Dispose(bool disposing) { app.StatusBar = false; } }