Add custom panel and tools

Controllers/RibbonController.cs

@@ -0,0 +1,30 @@
+using ExcelDna.Integration.CustomUI;
+using ExcelAddIn.Tools;
+
+namespace ExcelAddIn.Controllers;
+
+public class RibbonController : ExcelRibbon
+{
+	public override	string GetCustomUI(string ribbonID)
+	{
+		return @"<customUI xmlns='http://schemas.microsoft.com/office/2006/01/customui'>
+	  <ribbon>
+		<tabs>
+		  <tab id='MyAddinTab' label='My Addin Tab'>
+			<group id='MyAddinGroup' label='My Addin Group'>
+				<button id='Button1' label='Button 1' size='large' imageMso='HappyFace' onAction='OnToolPressed'/> 
+				<button id='Button2' label='Button 2' size='large' imageMso='SadFace' onAction='OnToolPressed'/> 
+				<button id='Button3' label='Button 3' size='large' imageMso='Piggy' onAction='OnToolPressed'/> 
+			</group>
+		  </tab>
+		</tabs>
+	  </ribbon>
+	</customUI>";
+	}
+	
+	public void OnToolPressed(IRibbonControl control)
+	{
+		using var tool = ToolFactory.GetTool(control);
+		tool.Execute();	
+	}
+}

ExcelAddIn.csproj

@@ -3,11 +3,13 @@
   <PropertyGroup>
     <TargetFramework>net6.0-windows</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
+    <UseWindowsForms>true</UseWindowsForms>
     <Nullable>disable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="ExcelDna.AddIn" Version="1.6.0" />
+    <PackageReference Include="ExcelDna.Interop" Version="15.0.1" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="7.0.0" />
   </ItemGroup>

Tools/Button1Tool.cs

@@ -0,0 +1,14 @@
+namespace ExcelAddIn.Tools;
+
+public class Button1Tool : Tool
+{
+	public override void Execute()
+	{
+		MessageBox.Show($"Message from {nameof(Button1Tool)}");	
+	}
+
+	protected override void Dispose(bool disposing)
+	{
+		
+	}
+}

Tools/Button2Tool.cs

@@ -0,0 +1,30 @@
+using Application = Microsoft.Office.Interop.Excel.Application;
+
+namespace ExcelAddIn.Tools;
+
+public class Button2Tool : Tool
+{
+	private readonly Application app;
+	public Button2Tool()
+	{
+		app = (Application)ExcelDnaUtil.Application;
+	}
+	public override void Execute()
+	{
+		if (app.ActiveCell == null)
+		{
+			return;
+		}
+		
+		double? cellValue = app.ActiveCell.Cells.Value2;
+		if (cellValue != null)
+		{
+			app.ActiveCell.Cells.Value2 = ++cellValue;
+		}
+	}
+
+	protected override void Dispose(bool disposing)
+	{
+		
+	}
+}

Tools/Button3Tool.cs

@@ -0,0 +1,24 @@
+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;
+	}
+}

Tools/Tool.cs

@@ -0,0 +1,14 @@
+namespace ExcelAddIn.Tools;
+
+public abstract class Tool : IDisposable
+{
+	public abstract void Execute();
+
+	public void Dispose()
+	{
+		Dispose(true);
+		GC.SuppressFinalize(this);
+	}
+
+	protected abstract void Dispose(bool disposing);
+}

Tools/ToolFactory.cs

@@ -0,0 +1,17 @@
+using ExcelDna.Integration.CustomUI;
+
+namespace ExcelAddIn.Tools;
+
+public static class ToolFactory 
+{
+	public static Tool GetTool(IRibbonControl control)
+	{
+		return control.Id switch 
+		{
+			"Button1" => new Button1Tool(),
+			"Button2" => new Button2Tool(),
+			"Button3" => new Button3Tool(),
+			_ => throw new NotImplementedException(control.Id)
+		};
+	}
+}