在构建csproj文件之前自动修复ProjectReference Include路径

Question

我有一个VS 2010解决方案，其中有许多项目。项目引用解决方案中的其他项目。我注意到，当我在csproj文件中有一个错误的项目引用路径时，如下所示:

<ProjectReference Include="........WrongFolderOtherProject.csproj">
    <Project>{CD795AA6-9DC4-4451-A8BA-29BACF847AAC}</Project>
    <Name>OtherProject</Name>
</ProjectReference>

Visual studio将在打开解决方案时修复此问题:

<ProjectReference Include="........RightFolderOtherProject.csproj">
    <Project>{CD795AA6-9DC4-4451-A8BA-29BACF847AAC}</Project>
    <Name>OtherProject</Name>
</ProjectReference>

我认为它使用来自Project元素的GUID来唯一地标识解决方案中的项目，从而允许它修复路径。

MSBuild在另一方面似乎没有修复这个路径和构建解决方案失败。

是否有一种方法可以使MSBuild修复路径，或者使用其他工具或命令将其作为预构建步骤，以便正确构建解决方案?

谢谢!

Answer 1

这是VisualStudio功能的一部分。但是您可以在构建之前调用一个工具来解决引用。下面是你可以详细说明的代码草案:

using System;
using System.IO;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Xml;
namespace FixProjectReferences
{
class Program
{
// License: This work is licensed under a Creative Commons
// Attribution-ShareAlike 3.0 Unported License.
// Author: Marlos Fabris
// Summary: Updates the project references in csproj.
// Param:
// args[0] = Main project (c:mainProject.csproj)
// args[1] = Folder to scan other projects (c:other)
static void Main(string[] args)
{
    string mainProject = args[0];
    string folder = args[1];
    FileInfo mainPrjInfo = new FileInfo(mainProject);
    string currentDir = Directory.GetCurrentDirectory();
    // Lists all project files in the directory specified
    // and scans the GUID's.
    DirectoryInfo info = new DirectoryInfo(folder);
    FileInfo[] projects = info.GetFiles("*.csproj",
        SearchOption.AllDirectories);
    Dictionary<Guid, string> prjGuids = new Dictionary<Guid, string>();
    foreach (var project in projects)
    {
        if (project.FullName == mainPrjInfo.FullName)
            continue;
        Regex regex = new Regex("<ProjectGuid>(\{.*?\})</ProjectGuid>");
        Match match = regex.Match(File.ReadAllText(project.FullName));
        string guid = match.Groups[1].Value;
        prjGuids.Add(new Guid(guid), project.FullName);
    }
    // Loads the main project and verifies if the references are valid.
    // If not, updates with the correct ones from the list
    // previously generated.
    XmlDocument doc = new XmlDocument();
    doc.Load(mainPrjInfo.FullName);
    XmlNamespaceManager ns = new XmlNamespaceManager(doc.NameTable);
    ns.AddNamespace("ns",
        "http://schemas.microsoft.com/developer/msbuild/2003");
    var nodes = doc.SelectNodes("//ns:ProjectReference", ns);
    foreach (XmlNode node in nodes)
    {
        string referencePath = node.Attributes["Include"].Value;
        string path = Path.Combine(mainPrjInfo.Directory.FullName,
            referencePath);
        if (File.Exists(path))
            continue;
        string projectGuid = node.SelectSingleNode("./ns:Project",
            ns).InnerText;
        Guid tempGuid = new Guid(projectGuid);
        if (prjGuids.ContainsKey(tempGuid))
        {
            node.Attributes["Include"].Value = prjGuids[tempGuid];
        }
    }
    doc.Save(mainPrjInfo.FullName);
}
}
}