76 lines
1.7 KiB
C#
76 lines
1.7 KiB
C#
namespace KMCCC.Tools
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{
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#region
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using Microsoft.VisualBasic.Devices;
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using Microsoft.Win32;
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#endregion
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public class SystemTools
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{
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/// <summary>
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/// 从注册表中查找可能的javaw.exe位置
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/// </summary>
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/// <returns>JAVA地址列表</returns>
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public static IEnumerable<string> FindJava()
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{
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try
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{
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var rootReg = Registry.LocalMachine.OpenSubKey("SOFTWARE");
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return rootReg == null
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? new string[0]
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: FindJavaInternal(rootReg).Union(FindJavaInternal(rootReg.OpenSubKey("Wow6432Node")));
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}
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catch
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{
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return new string[0];
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}
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}
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public static IEnumerable<string> FindJavaInternal(RegistryKey registry)
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{
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try
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{
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var registryKey = registry.OpenSubKey("JavaSoft");
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if ((registryKey == null) || ((registry = registryKey.OpenSubKey("Java Runtime Environment")) == null)) return new string[0];
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return (from ver in registry.GetSubKeyNames()
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select registry.OpenSubKey(ver)
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into command
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where command != null
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select command.GetValue("JavaHome")
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into javaHomes
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where javaHomes != null
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select javaHomes.ToString()
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into str
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where !String.IsNullOrWhiteSpace(str)
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select str + @"\bin\javaw.exe");
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}
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catch
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{
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return new string[0];
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}
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}
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/// <summary>
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/// 取物理内存
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/// </summary>
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/// <returns>物理内存</returns>
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public static ulong GetTotalMemory()
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{
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return new Computer().Info.TotalPhysicalMemory;
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}
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/// <summary>
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/// 获取x86 or x64
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/// </summary>
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/// <returns>32 or 64</returns>
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public static string GetArch()
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{
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return Environment.Is64BitOperatingSystem ? "64" : "32";
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}
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}
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} |