Question

我在Visual Studio 2010中有一个用于创建安装工具包（MSI）的安装项目。我需要更新环境路径以在安装MSI时添加条目。知道怎么做吗？

我找不到让我访问环境的选项。我唯一看到的可能就是直接编辑注册表。我能做的更好，或者这是我唯一的选择？

由于贝

Answer 1

Visual Studio安装项目无法设置环境变量。但是，您可以尝试使用自定义操作。以下是一些示例VBScript代码：

Set WshShell = CreateObject("WScript.Shell") 
Set WshEnv = WshShell.Environment("SYSTEM") 
WshEnv("Path") = WshEnv("Path") & ";myPath"

您可以将其复制到.VBS文件中，并将该文件添加为安装自定义操作。

Answer 2

我成功使用Visual Studio（2015）中的安装项目并添加了一个自定义操作来更改注册表，如下所示：

GetEnvironmentVariable() and SetEnvironmentVariable() for PATH Variable

以下代码适用于应该应用于安装项目的提交/安装/卸载操作的自定义操作：

 [RunInstaller(true)]
public partial class GRInstallCustomAction : System.Configuration.Install.Installer
{
    string environmentKey = @"SYSTEM\CurrentControlSet\Control\Session Manager\Environment";
    string pathUrl = "C:\\Program Files (86)\\TargetFolder";
    public GRInstallCustomAction()
    {
        InitializeComponent();
    }

    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand)]
    public override void Install(IDictionary stateSaver)
    {
        base.Install(stateSaver);
    }

    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand)]
    public override void Commit(IDictionary savedState)
    {
        base.Commit(savedState);

        string environmentVar = Environment.GetEnvironmentVariable("PATH");


        //get non-expanded PATH environment variable            
        string oldPath = (string)Registry.LocalMachine.CreateSubKey(environmentKey).GetValue("Path", "", RegistryValueOptions.DoNotExpandEnvironmentNames);


        var index = oldPath.IndexOf(pathUrl);
        if (index < 0)
        {
            //set the path as an an expandable string
            Registry.LocalMachine.CreateSubKey(environmentKey).SetValue("Path", oldPath + ";" + pathUrl, RegistryValueKind.ExpandString);
        }

    }

    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand)]
    public override void Rollback(IDictionary savedState)
    {
        base.Rollback(savedState);


    }

    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand)]
    public override void Uninstall(IDictionary savedState)
    {
        base.Uninstall(savedState);

        //get non-expanded PATH environment variable            
        string oldPath = (string)Registry.LocalMachine.CreateSubKey(environmentKey).GetValue("Path", "", RegistryValueOptions.DoNotExpandEnvironmentNames);

        string removeString = pathUrl + ";";
        var index = oldPath.IndexOf(removeString);
        if (index < 0)
        {
            removeString = pathUrl;
            index = oldPath.IndexOf(removeString);
        }

        if (index > -1)
        {
            oldPath = oldPath.Remove(index, pathUrl.Length);
            //set the path as an an expandable string
            Registry.LocalMachine.CreateSubKey(environmentKey).SetValue("Path", oldPath, RegistryValueKind.ExpandString);
        }
    }
}

如何在visual studio中修改安装项目的环境路径

2 个答案: