在C#中访问WindowsInstaller.Installer COM对象

时间:2019-01-16 20:24:15

标签: c# com windows-installer

我在GitHub上找到了一个nice Powershell function,它使用WindowsInstaller.Installer COM对象来查询已安装的应用程序,并非常漂亮地列出了所有详细信息和属性。但是,我不想使用Powershell来创建一个exe。

我不想搜索注册表,也不想使用WMI。我想使用在Powershell脚本和我发现的另一个vbscript中使用的相同方法。确实存在一个名为WindowsInstaller.Installer的COM对象。它确实存在,但是由于某些原因,在使用C#将Visual Studio中的msi.dll导入后,我找不到如何访问它的单个示例。

有人知道这个问题的答案吗?

在Visual Studio中,通过添加WindowsInstaller的COM引用中的WindowsInstaller.Installer引用只是一种类型,仅此而已。它不包含名为“ GetType”的方法,并且尝试将此PowerShell转换为C#不能正常工作。

我也不知道@{}是什么意思,但我想它的意思是哈希表。

我为逼迫以下情况而进行的不幸尝试:

    private void Form1_Load(object sender, EventArgs e)
    {
        Type installerType = Type.GetType("WindowsInstaller.Installer");

        Installer installerObj = (Installer)Activator.CreateInstance(installerType);
        WindowsInstaller.Installer installer = installerObj as WindowsInstaller.Installer;
        var type = installer.GetType();

        var Products = type.InvokeMember("Products", System.Reflection.BindingFlags.GetProperty, null, installer, null) as IEnumerable<object>;

        foreach (var product in Products)
        {
            Hashtable hash = new Hashtable();
            hash.Add("ProductCode", product);

            string[] Attributes = { "Language", "ProductName", "PackageCode", "Transforms", "AssignmentType", "PackageName", "InstalledProductName", "VersionString", "RegCompany", "RegOwner", "ProductID", "ProductIcon", "InstallLocation", "InstallSource", "InstallDate", "Publisher", "LocalPackage", "HelpLink", "HelpTelephone", "URLInfoAbout", "URLUpdateInfo" };
            foreach (var attribute in Attributes)
            {
                object[] thing = { product, attribute };
                var details = type.InvokeMember("ProductInfo", System.Reflection.BindingFlags.GetProperty, null, installer, thing);
                hash.Add(attribute, details);
            }
            new ??????????
        }

    }

1 个答案:

答案 0 :(得分:1)

您对@{}是正确的,它是一个新的哈希表。我认为您可以根据需要创建一个列表,然后遍历所有要收集属性的产品,就可以将其添加到该列表中

   Type installerType = Type.GetTypeFromProgID("WindowsInstaller.Installer");

        Installer installerObj = (Installer)Activator.CreateInstance(installerType);
        WindowsInstaller.Installer installer = installerObj as WindowsInstaller.Installer;
        var Products = installerObj.Products;

        List<Hashtable> ProductCollection = new List<Hashtable>();

        foreach (var product in Products)
        {
            Hashtable hash = new Hashtable();
            hash.Add("ProductCode", product);

            string[] Attributes = { "Language", "ProductName", "PackageCode", "Transforms", "AssignmentType", "PackageName", "InstalledProductName", "VersionString", "RegCompany", "RegOwner", "ProductID", "ProductIcon", "InstallLocation", "InstallSource", "InstallDate", "Publisher", "LocalPackage", "HelpLink", "HelpTelephone", "URLInfoAbout", "URLUpdateInfo" };
            foreach (var attribute in Attributes)
            {
                try
                {
                    var details = installer.ProductInfo[product.ToString(), attribute.ToString()];
                    hash.Add(attribute, details);
                }
                catch
                {
                }
            }
            ProductCollection.Add(hash);
        }

现在只需参考ProductCollection即可获取您的产品详细信息。如果您想更进一步,可以为每个MSI创建一个类,并让您的过程为每个产品创建一个对象。

public class MSIInfo
    {
        public string ProductCode { get; set; }
        public string Language { get; set; }
        public string ProductName { get; set; }
        public string PackageCode { get; set; }
        public string Transforms { get; set; }
        public string AssignmentType { get; set; }
        public string PackageName { get; set; }
        public string InstalledProductName { get; set; }
        public string VersionString { get; set; }
        public string RegCompany { get; set; }
        public string RegOwner { get; set; }
        public string ProductID { get; set; }
        public string ProductIcon { get; set; }
        public string InstallLocation { get; set; }
        public string InstallSource { get; set; }
        public string InstallDate { get; set; }
        public string Publisher { get; set; }
        public string LocalPackage { get; set; }
        public string HelpLink { get; set; }
        public string HelpTelephone { get; set; }
        public string URLInfoAbout { get; set; }
        public string URLUpdateInfo { get; set; }

        public override string ToString()
        {
            return $"{ProductName} - {ProductCode}";
        }

        public static IEnumerable<MSIInfo> GetProducts()
        {
            Type installerType = Type.GetTypeFromProgID("WindowsInstaller.Installer");

            Installer installerObj = (Installer)Activator.CreateInstance(installerType);
            WindowsInstaller.Installer installer = installerObj as WindowsInstaller.Installer;
            var Products = installerObj.Products;

            List<MSIInfo> ProductCollection = new List<MSIInfo>();

            foreach (var product in Products)
            {
                MSIInfo msi = new MSIInfo();
                msi.ProductCode = product.ToString();

                foreach (var property in msi.GetType()?.GetProperties())
                {
                    try
                    {
                        if (property.Name != "ProductCode")
                        {
                            string val = installer.ProductInfo[product.ToString(), property.Name];
                            property.SetValue(msi, val);
                        }
                    }
                    catch (System.Runtime.InteropServices.COMException)
                    {
                    }
                }
                ProductCollection.Add(msi);
            }

            return ProductCollection;

        }
    }

一旦有了该类,就可以像这样从代码中获取集合

var Products = MSIInfo.GetProducts();