我用它来列出注册表中列出的所有 32 位和 64 位应用程序，并将它们显示在控制台窗口中：
string registryKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryKey key = Registry.LocalMachine.OpenSubKey(registryKey);
if (key != null)
{
foreach (String a in key.GetSubKeyNames())
{
RegistryKey subkey = key.OpenSubKey(a);
Console.WriteLine(subkey.GetValue("DisplayName"));
}
}
registryKey = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
key = Registry.LocalMachine.OpenSubKey(registryKey);
if (key != null)
{
foreach (String a in key.GetSubKeyNames())
{
RegistryKey subkey = key.OpenSubKey(a);
Console.WriteLine(subkey.GetValue("DisplayName"));
}
}
我正在尝试从显示名称列表中查找一个程序标题以查看它是否已安装。
我最后尝试的是：
if (subkey.Name.Contains("OpenSSL"))
Console.Writeline("OpenSSL Found");
else
Console.Writeline("OpenSSL Not Found");
我尝试过的任何方法，要么是错误的，要么是误报。
如何从列表中获取标题？
private static void IsApplicationInstalled(p_name)经过搜索和故障排除后，我让它以这种方式工作：
public static bool checkInstalled (string c_name)
{
string displayName;
string registryKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryKey key = Registry.LocalMachine.OpenSubKey(registryKey);
if (key != null)
{
foreach (RegistryKey subkey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))
{
displayName = subkey.GetValue("DisplayName") as string;
if (displayName != null && displayName.Contains(c_name))
{
return true;
}
}
key.Close();
}
registryKey = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
key = Registry.LocalMachine.OpenSubKey(registryKey);
if (key != null)
{
foreach (RegistryKey subkey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))
{
displayName = subkey.GetValue("DisplayName") as string;
if (displayName != null && displayName.Contains(c_name))
{
return true;
}
}
key.Close();
}
return false;
}
我只是简单地使用
来称呼它if(checkInstalled("Application Name"))
这是一种干净的方法，无需那么多代码即可完成此操作。
private static bool IsSoftwareInstalled(string softwareName)
{
var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall") ??
Registry.LocalMachine.OpenSubKey(
@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall");
if (key == null)
return false;
return key.GetSubKeyNames()
.Select(keyName => key.OpenSubKey(keyName))
.Select(subkey => subkey.GetValue("DisplayName") as string)
.Any(displayName => displayName != null && displayName.Contains(softwareName));
}
用 if 语句调用它：
if (IsSoftwareInstalled("OpenSSL"))
我已经检查了@Stellan Lindell 的代码，它并不在所有情况下都有效。 我的版本应该适用于所有场景，并检查已安装程序的特定版本（x86、x64）。
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Win32;
namespace Test
{
internal class Program
{
public enum ProgramVersion
{
x86,
x64
}
private static IEnumerable<string> GetRegisterSubkeys(RegistryKey registryKey)
{
return registryKey.GetSubKeyNames()
.Select(registryKey.OpenSubKey)
.Select(subkey => subkey.GetValue("DisplayName") as string);
}
private static bool CheckNode(RegistryKey registryKey, string applicationName, ProgramVersion? programVersion)
{
return GetRegisterSubkeys(registryKey).Any(displayName => displayName != null
&& displayName.Contains(applicationName)
&& displayName.Contains(programVersion.ToString()));
}
private static bool CheckApplication(string registryKey, string applicationName, ProgramVersion? programVersion)
{
RegistryKey key = Registry.LocalMachine.OpenSubKey(registryKey);
if (key != null)
{
if (CheckNode(key, applicationName, programVersion))
return true;
key.Close();
}
return false;
}
public static bool IsSoftwareInstalled(string applicationName, ProgramVersion? programVersion)
{
string[] registryKey = new [] {
@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall",
@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall"
};
return registryKey.Any(key => CheckApplication(key, applicationName, programVersion));
}
private static void Main()
{
// Examples
Console.WriteLine("Notepad++: " + IsSoftwareInstalled("Notepad++", null));
Console.WriteLine("Notepad++(x86): " + IsSoftwareInstalled("Notepad++", ProgramVersion.x86));
Console.WriteLine("Notepad++(x64): " + IsSoftwareInstalled("Notepad++", ProgramVersion.x64));
Console.WriteLine("Microsoft Visual C++ 2009: " + IsSoftwareInstalled("Microsoft Visual C++ 2009", null));
Console.WriteLine("Microsoft Visual C-- 2009: " + IsSoftwareInstalled("Microsoft Visual C-- 2009", null));
Console.WriteLine("Microsoft Visual C++ 2013: " + IsSoftwareInstalled("Microsoft Visual C++ 2013", null));
Console.WriteLine("Microsoft Visual C++ 2012 Redistributable (x86): " + IsSoftwareInstalled("Microsoft Visual C++ 2013", ProgramVersion.x86));
Console.WriteLine("Microsoft Visual C++ 2012 Redistributable (x64): " + IsSoftwareInstalled("Microsoft Visual C++ 2013", ProgramVersion.x64));
Console.ReadKey();
}
}
}
解决方案@Hyperion 是可以的，但它有一个错误，因为对于 32 位配置。不返回 64 位寄存器。要接收 64 位寄存器，请执行以下操作：
string registryKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryKey key64 = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
RegistryKey key = key64.OpenSubKey(registryKey);
上面的解决方案确实很好，但有时您必须检查产品是否也安装在另一台计算机上。所以有一个基于@Stellan Lindell 和@Mroczny Arturek 的上述解决方案的版本
此方法适用于本地计算机和远程计算机...
public static bool IsSoftwareInstalled(string softwareName, string remoteMachine = null, StringComparison strComparison = StringComparison.Ordinal)
{
string uninstallRegKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryView[] enumValues = (RegistryView[])Enum.GetValues(typeof(RegistryView));
//Starts from 1, because first one is Default, so we dont need it...
for (int i = 1; i < enumValues.Length; i++)
{
//This one key is all what we need, because RegView will do the rest for us
using (RegistryKey key = (string.IsNullOrWhiteSpace(remoteMachine))
? RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, enumValues[i]).OpenSubKey(uninstallRegKey)
: RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, remoteMachine, enumValues[i]).OpenSubKey(uninstallRegKey))
{
if (key != null)
{
if (key.GetSubKeyNames()
.Select(keyName => key.OpenSubKey(keyName))
.Select(subKey => subKey.GetValue("DisplayName") as string)
//SomeTimes we really need the case sensitive/insensitive option...
.Any(displayName => displayName != null && displayName.IndexOf(softwareName, strComparison) >= 0))
{ return true; }
}
}
}
return false;
}
注册表版本只是两个标准选项中的一个。另一种选择是使用 WMI，但由于性能原因，注册表版本要好得多，因此仅将 WMI 作为替代方案。
//This one does't have a case sensitive/insesitive option, but if you need it, just don't use LIKE %softwareName%
//and get all products (SELECT Name FROM Win32_Product). After that just go trough the result and compare...
public static bool IsSoftwareInstalledWMI(string softwareName, string remoteMachine = null)
{
string wmiPath = (!string.IsNullOrEmpty(remoteMachine))
? @"\\" + remoteMachine + @"\root\cimv2"
: @"\\" + Environment.MachineName + @"\root\cimv2";
SelectQuery select = new SelectQuery(string.Format("SELECT * FROM Win32_Product WHERE Name LIKE \"%{0}%\"", softwareName));
if (SelectStringsFromWMI(select, new ManagementScope(wmiPath)).Count > 0) { return true; }
return false;
}
我有 SelectStringsFromWMI 方法，但您可以自己执行此操作，这不是此解决方案的重要部分。但如果你有兴趣，那就是......
public static List<Dictionary<string, string>> SelectStringsFromWMI(SelectQuery select, ManagementScope wmiScope)
{
List<Dictionary<string, string>> result = new List<Dictionary<string, string>>();
using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(wmiScope, select))
{
using (ManagementObjectCollection objectCollection = searcher.Get())
{
foreach (ManagementObject managementObject in objectCollection)
{
//With every new object we add new Dictionary
result.Add(new Dictionary<string, string>());
foreach (PropertyData property in managementObject.Properties)
{
//Always add data to newest Dictionary
result.Last().Add(property.Name, property.Value?.ToString());
}
}
return result;
}
}
}
！！更新！！
由于性能确实很差，还有另一个改进。只需异步获取值..
public static bool IsSoftwareInstalled(string softwareName, string remoteMachine = null, StringComparison strComparison = StringComparison.Ordinal)
{
string uninstallRegKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryView[] enumValues = (RegistryView[])Enum.GetValues(typeof(RegistryView));
//Starts from 1, because first one is Default, so we dont need it...
for (int i = 1; i < enumValues.Length; i++)
{
//This one key is all what we need, because RegView will do the rest for us
using (RegistryKey regKey = (string.IsNullOrWhiteSpace(remoteMachine))
? RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, enumValues[i]).OpenSubKey(uninstallRegKey)
: RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, remoteMachine, enumValues[i]).OpenSubKey(uninstallRegKey))
{
if (SearchSubKeysForValue(regKey, "DisplayName", softwareName, strComparison).Result)
{ return true; }
}
}
return false;
}
还有 SearchSubKeysForValue 方法（可以构建为扩展方法）：
public static async Task<bool> SearchSubKeysForValue(RegistryKey regKey, string valueName, string searchedValue, StringComparison strComparison = StringComparison.Ordinal)
{
bool result = false;
string[] subKeysNames = regKey.GetSubKeyNames();
List<Task<bool>> tasks = new List<Task<bool>>();
for (int i = 0; i < subKeysNames.Length - 1; i++)
{
//We have to save current value for i, because we cannot use it in async task due to changed values for it during foor loop
string subKeyName = subKeysNames[i];
tasks.Add(Task.Run(() =>
{
string value = regKey.OpenSubKey(subKeyName)?.GetValue(valueName)?.ToString() ?? null;
return (value != null && value.IndexOf(searchedValue, strComparison) >= 0);
}));
}
bool[] results = await Task.WhenAll(tasks).ConfigureAwait(false);
result = results.Contains(true);
return result;
}
这是我的 64 位版本
public static string[] checkInstalled(string findByName)
{
string[] info = new string[3];
string registryKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
//64 bits computer
RegistryKey key64 = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
RegistryKey key = key64.OpenSubKey(registryKey);
if (key != null)
{
foreach (RegistryKey subkey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))
{
string displayName = subkey.GetValue("DisplayName") as string;
if (displayName != null && displayName.Contains(findByName))
{
info[0] = displayName;
info[1] = subkey.GetValue("InstallLocation").ToString();
info[2] = subkey.GetValue("Version").ToString();
}
}
key.Close();
}
return info;
}
你可以这样调用这个方法
string[] JavaVersion = Software.checkInstalled("Java(TM) SE Development Kit");
如果数组为空，则表示未找到安装。如果它不为空，它将为您提供原始名称、相对路径和位置，在大多数情况下，这就是我们想要获得的全部内容。
我尝试了这里的解决方案，但在某些情况下它们不起作用。原因是，我的程序是 32 位的，在 64 位 Windows 上运行。使用此处发布的解决方案，32 位进程无法检查是否安装了 64 位应用程序。
我修改了此处的解决方案以获得解决此问题的可行解决方案：
使用示例
Console.WriteLine(IsSoftwareInstalled("Notepad++"));
代码
public static bool IsSoftwareInstalled(string softwareName)
{
var registryUninstallPath = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
var registryUninstallPathFor32BitOn64Bit = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
if (Is32BitWindows())
return IsSoftwareInstalled(softwareName, RegistryView.Registry32, registryUninstallPath);
var is64BitSoftwareInstalled = IsSoftwareInstalled(softwareName, RegistryView.Registry64, registryUninstallPath);
var is32BitSoftwareInstalled = IsSoftwareInstalled(softwareName, RegistryView.Registry64, registryUninstallPathFor32BitOn64Bit);
return is64BitSoftwareInstalled || is32BitSoftwareInstalled;
}
private static bool Is32BitWindows() => Environment.Is64BitOperatingSystem == false;
private static bool IsSoftwareInstalled(string softwareName, RegistryView registryView, string installedProgrammsPath)
{
var uninstallKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, registryView)
.OpenSubKey(installedProgrammsPath);
if (uninstallKey == null)
return false;
return uninstallKey.GetSubKeyNames()
.Select(installedSoftwareString => uninstallKey.OpenSubKey(installedSoftwareString))
.Select(installedSoftwareKey => installedSoftwareKey.GetValue("DisplayName") as string)
.Any(installedSoftwareName => installedSoftwareName != null && installedSoftwareName.Contains(softwareName));
}