从查询中读取前1个注册表值 [英] Read top 1 registry value from query

问题描述

您好我有多个注册表项都以相同的前缀开头，但我只想获取第一条记录，以便我可以阅读EventMessageFile详细信息。到目前为止，我有这个给了我一些记录：

Hi I have multiple registry entries all beginning with the same prefix but I only want to get the first record so I can read the EventMessageFile Details. So far I have this which gives me a count of the records:

int count = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\").GetSubKeyNames().Where(s => s.StartsWith("CardSpace")).Count();

如何选择第一条记录来阅读详细信息？

how do I select the first record to read the details?

推荐答案

你必须使用：

You have to use:

Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\").GetSubKeyNames().Where(s => s.StartsWith("CardSpace")).FirstOrDefault();

感谢你们两个人我最终得到了这个：

Thanks to both you guys I've ended up with this:

string servicename = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\").GetSubKeyNames().Where(s => s.StartsWith("CardSpace")).FirstOrDefault();

string dotNetFourPath = "SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\" + servicename; // "AllstateCTSNGMedbillEP"; //servicename here
            using (RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(dotNetFourPath))
            {
                Console.WriteLine(registryKey.GetValue("EventMessageFile")); //returns EventMessageFile - Value Data

                string sDt = registryKey.GetValue("EventMessageFile").ToString();
                //sDt.Split('\\');                
                string[] sVar = sDt.Split('\\');
                string sYourValue = sVar[4];
                Console.WriteLine(sVar[0]);
                Console.WriteLine(sVar[1]);
                Console.WriteLine(sVar[2]);
                Console.WriteLine(sVar[3]);
                Console.WriteLine(sVar[4]);
                Console.WriteLine(sVar[5]);
                Console.WriteLine(sYourValue);
            }

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