Question

我一直关注MSDN's Hello World guide to developing Visual Studio extensions（本文专门介绍如何创建一个作为Visual Studio工具栏命令）。

我正在尝试列出当前/活动解决方案中包含的所有项目。

在Command模板的自动生成代码中。

我已尝试EnvDTE的{{1}} Solution属性，但它显示零项目。

还有一个Projects属性，但它也显示一个空数组。

这是如何实现的？

P.S。：我尝试了DTE和DTE2接口，因为从文档中理解使用哪个版本令人困惑。我得到DTE2的空服务，所以我要去DTE。

My Solution Explorer如下所示：

更新：来自gitter/extendvs的Bert Huijben建议在VSSDK Extensibility Samples找到以下内容，但这也不起作用（返回0个元素，两者都在构造函数中并在回调函数中）：

ActiveSolutionProjects

Answer 1

获取EnvDTE.Project对象：

    static private void FindProjectsIn(EnvDTE.ProjectItem item, List<EnvDTE.Project> results)
    {
        if (item.Object is EnvDTE.Project)
        {
            var proj = (EnvDTE.Project)item.Object;
            if (new Guid(proj.Kind) != Utilities.ProjectTypeGuids.Folder)
            {
                results.Add((EnvDTE.Project)item.Object);
            }
            else
            {
                foreach (EnvDTE.ProjectItem innerItem in proj.ProjectItems)
                {
                    FindProjectsIn(innerItem, results);
                }
            }
        }
        if (item.ProjectItems != null)
        {
            foreach (EnvDTE.ProjectItem innerItem in item.ProjectItems)
            {
                FindProjectsIn(innerItem, results);
            }
        }
    }

    static private void FindProjectsIn(EnvDTE.UIHierarchyItem item, List<EnvDTE.Project> results)
    {
        if (item.Object is EnvDTE.Project)
        {
            var proj = (EnvDTE.Project)item.Object;
            if (new Guid(proj.Kind) != Utilities.ProjectTypeGuids.Folder)
            {
                results.Add((EnvDTE.Project)item.Object);
            }
            else
            {
                foreach (EnvDTE.ProjectItem innerItem in proj.ProjectItems)
                {
                    FindProjectsIn(innerItem, results);
                }
            }
        }
        foreach (EnvDTE.UIHierarchyItem innerItem in item.UIHierarchyItems)
        {
            FindProjectsIn(innerItem, results);
        }
    }

    static internal IEnumerable<EnvDTE.Project> GetEnvDTEProjectsInSolution()
    {
        List<EnvDTE.Project> ret = new List<EnvDTE.Project>();
        EnvDTE80.DTE2 dte = (EnvDTE80.DTE2)ServiceProvider.GlobalProvider.GetService(typeof(EnvDTE.DTE));
        EnvDTE.UIHierarchy hierarchy = dte.ToolWindows.SolutionExplorer;
        foreach (EnvDTE.UIHierarchyItem innerItem in hierarchy.UIHierarchyItems)
        {
            FindProjectsIn(innerItem, ret);
        }
        return ret;
    }

值得注意的是，需要递归才能深入研究解决方案文件夹。

如果您只想要文件路径，可以使用DTE执行此操作：

    static internal string[] GetProjectFilesInSolution()
    {
        IVsSolution sol = ServiceProvider.GlobalProvider.GetService(typeof(SVsSolution)) as IVsSolution;
        uint numProjects;
        ErrorHandler.ThrowOnFailure(sol.GetProjectFilesInSolution((uint)__VSGETPROJFILESFLAGS.GPFF_SKIPUNLOADEDPROJECTS, 0, null, out numProjects));
        string[] projects = new string[numProjects];
        ErrorHandler.ThrowOnFailure(sol.GetProjectFilesInSolution((uint)__VSGETPROJFILESFLAGS.GPFF_SKIPUNLOADEDPROJECTS, numProjects, projects, out numProjects));
        //GetProjectFilesInSolution also returns solution folders, so we want to do some filtering
        //things that don't exist on disk certainly can't be project files
        return projects.Where(p => !string.IsNullOrEmpty(p) && System.IO.File.Exists(p)).ToArray();
    }

Answer 2

适合我：

在包中添加一个字段用于dte。获得DTE服务。参考解决方案。

using EnvDTE;
using EnvDTE80;

在你的构造函数中：

dte = this.ServiceProvider.GetService(typeof(EnvDTE.DTE)) as EnvDTE80.DTE2;

在命令处理程序中：

Integer count = ((EnvDTE.SolutionClass)dte.Solution).Projects.Count;

我从中获得了正确的计数。

屏幕截图（请求）

代码

//------------------------------------------------------------------------------
// <copyright file="Command1.cs" company="Company">
//     Copyright (c) Company.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------

using System;
using System.ComponentModel.Design;
using System.Globalization;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using EnvDTE;
using EnvDTE80;

namespace SolExpExt
{
    internal sealed class Command1
    {
        public const int CommandId = 0x0100;
        public static readonly Guid CommandSet = new Guid("beff5a1a-dff5-4f6a-95c8-fd7ea7411a7b");
        private DTE2 dte;
        private readonly Package package;
        private IVsSolution sol;
        private Command1(Package package)
        {
            if (package == null)
            {
                throw new ArgumentNullException("package");
            }

            this.package = package;

            OleMenuCommandService commandService = this.ServiceProvider.GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
            if (commandService != null)
            {
                var menuCommandID = new CommandID(CommandSet, CommandId);
                var menuItem = new MenuCommand(this.MenuItemCallback, menuCommandID);
                commandService.AddCommand(menuItem);
            }

            dte = this.ServiceProvider.GetService(typeof(EnvDTE.DTE)) as EnvDTE80.DTE2;
        }

        public static Command1 Instance
        {
            get;
            private set;
        }

        private IServiceProvider ServiceProvider
        {
            get
            {
                return this.package;
            }
        }

        public static void Initialize(Package package)
        {
            Instance = new Command1(package);
        }

        private void MenuItemCallback(object sender, EventArgs e)
        {
            string message = $"There are {dte.Solution.Projects.Count} projects in this solution.";
            string title = "Command1";

            VsShellUtilities.ShowMessageBox(
                this.ServiceProvider,
                message,
                title,
                OLEMSGICON.OLEMSGICON_INFO,
                OLEMSGBUTTON.OLEMSGBUTTON_OK,
                OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST);
        }
    }
}

Answer 3

很不幸，在这里找不到任何可行的解决方案，因此决定发布我自己的解决方案：

/// <summary>
/// Queries for all projects in solution, recursively (without recursion)
/// </summary>
/// <param name="sln">Solution</param>
/// <returns>List of projects</returns>
static List<Project> GetProjects(Solution sln)
{
    List<Project> list = new List<Project>();
    list.AddRange(sln.Projects.Cast<Project>());

    for (int i = 0; i < list.Count; i++)
        // OfType will ignore null's.
        list.AddRange(list[i].ProjectItems.Cast<ProjectItem>().Select(x => x.SubProject).OfType<Project>());

    return list;
}

如果您不知道要添加哪些引用/名称空间，则可以从此处获取带有源代码的项目：

https://github.com/tapika/cppscriptcore/blob/2a73f45474c8b2179774fd4715b8d8e80080f3ae/Tools/vsStart/Program.cs#L478

并检查名称空间/引用。

Answer 4

以下，从AutoFindReplace无耻地采取，使用VS2015社区：

using EnvDTE;
.
.
protected override void Initialize()
{
    base.Initialize();

    IServiceContainer serviceContainer = this as IServiceContainer;
    dte = serviceContainer.GetService(typeof(SDTE)) as DTE;
    var solutionEvents = dte.Events.SolutionEvents;
    solutionEvents.Opened += OnSolutionOpened;

    var i = dte.Solution.Projects.Count; // Happy days !
}

上述所有代码行都预先存在solution VSPackage.cs内，但“var i = dte.Solution.Projects.Count;”除外我在VSPackage.cs行之后的44本地添加了。然后我打开solution，点击F5，在实验实例中，我打开了JoePublic.Sln，嘿，因为计数'2'正确 - 宾果！快乐的日子！

如何使用EnvDTE列出当前解决方案中的所有项目？

4 个答案: