Added utility method for firing command

Fixes #64

Author: madskristensen

src/Community.VisualStudio.Toolkit.Shared/Commands/Commanding.cs

@@ -0,0 +1,71 @@
+using System;
+using System.ComponentModel.Design;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+using Microsoft.VisualStudio;
+using Microsoft.VisualStudio.OLE.Interop;
+using Microsoft.VisualStudio.Shell;
+using Microsoft.VisualStudio.Shell.Interop;
+
+namespace Community.VisualStudio.Toolkit
+{
+    /// <summary>A collection of services related to the command system.</summary>
+    public class Commands
+    {
+        internal Commands()
+        { }
+
+        /// <summary>Provides methods to manage the global designer verbs and menu commands available in design mode, and to show some types of shortcut menus.</summary>
+        public Task<IMenuCommandService> GetCommandServiceAsync() => VS.GetRequiredServiceAsync<IMenuCommandService, IMenuCommandService>();
+
+        /// <summary>Used to register and unregister a command target as a high priority command handler.</summary>
+        public Task<IVsRegisterPriorityCommandTarget> GetPriorityCommandTargetAsync() => VS.GetRequiredServiceAsync<SVsRegisterPriorityCommandTarget, IVsRegisterPriorityCommandTarget>();
+
+        /// <summary>
+        /// Executes a command by name
+        /// </summary>
+        /// <returns>Returns <see langword="true"/> if the command was succesfully executed; otherwise <see langword="false"/>.</returns>
+        public async Task<bool> ExecuteAsync(string name, string argument = "")
+        {
+            await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
+            IVsCommandWindow cw = await VS.Windows.GetCommandWindowAsync();
+
+            return cw.ExecuteCommand($"{name} {argument}") == VSConstants.S_OK;
+        }
+
+        /// <summary>
+        /// Executes a command by guid and ID
+        /// </summary>
+        /// <returns>Returns <see langword="true"/> if the command was succesfully executed; otherwise <see langword="false"/>.</returns>
+        public async Task<bool> ExecuteAsync(Guid menuGroup, uint commandId, string argument = "")
+        {
+            await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
+            IOleCommandTarget cs = await VS.GetRequiredServiceAsync<SUIHostCommandDispatcher, IOleCommandTarget>();
+            
+            IntPtr inArgPtr = Marshal.AllocCoTaskMem(200);
+            Marshal.GetNativeVariantForObject(argument, inArgPtr);
+
+            var result = cs.Exec(menuGroup, commandId, (uint)OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, inArgPtr, IntPtr.Zero);
+
+            return result == VSConstants.S_OK;
+        }
+
+        /// <summary>
+        /// Executes a command by guid and ID
+        /// </summary>
+        /// <returns>Returns <see langword="true"/> if the command was succesfully executed; otherwise <see langword="false"/>.</returns>
+        public Task<bool> ExecuteAsync(VSConstants.VSStd97CmdID command, string argument = "")
+        {
+            return ExecuteAsync(typeof(VSConstants.VSStd97CmdID).GUID, (uint)command, argument);
+        }
+
+        /// <summary>
+        /// Executes a command by guid and ID
+        /// </summary>
+        /// <returns>Returns <see langword="true"/> if the command was succesfully executed; otherwise <see langword="false"/>.</returns>
+        public Task<bool> ExecuteAsync(VSConstants.VSStd2KCmdID command, string argument = "")
+        {
+            return ExecuteAsync(typeof(VSConstants.VSStd2KCmdID).GUID, (uint)command, argument);
+        }
+    }
+}

src/Community.VisualStudio.Toolkit.Shared/Commands/Commands.cs

@@ -15,7 +15,7 @@ internal BuildEvents()
         {
             ThreadHelper.ThrowIfNotOnUIThread();
             var svc = ServiceProvider.GlobalProvider.GetService(typeof(SVsSolutionBuildManager)) as IVsSolutionBuildManager;
-            Assumes.Present(svc);
+            Assumes.Present(svc);            
             svc!.AdviseUpdateSolutionEvents(this, out _);
         }
 

src/Community.VisualStudio.Toolkit.Shared/Events/BuildEvents.cs

@@ -13,7 +13,7 @@ namespace Community.VisualStudio.Toolkit
     public static class VS
     {
         /// <summary>A collection of services related to the command system.</summary>
-        public static Commanding Commanding => new();
+        public static Commands Commands => new();
 
         /// <summary>A collection of services related to the debugger.</summary>
         public static Debugger Debugger => new();

src/Community.VisualStudio.Toolkit.Shared/VS.cs

@@ -42,7 +42,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Themes\ToolkitResourceKeys.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Themes\Themes.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Notifications\MessageBox.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Commands\Commanding.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Commands\Commands.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Events\Events.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ToolkitPackage.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ToolWindows\BaseToolWindow.cs" />