using Microsoft.Win32; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ZB.QueueSys.Common { public class SysEnvironment { /// <summary> /// 获取系统环境变量 /// </summary> /// <param name="name"></param> /// <returns></returns> public static string GetSysEnvironmentByName(string name) { string result = string.Empty; try { result = OpenSysEnvironment().GetValue(name).ToString();//读取 } catch { return string.Empty; } return result; } /// <summary> /// 打开系统环境变量注册表 /// </summary> /// <returns>RegistryKey</returns> private static RegistryKey OpenSysEnvironment() { RegistryKey regLocalMachine = Registry.LocalMachine; RegistryKey regSYSTEM = regLocalMachine.OpenSubKey("SYSTEM", true);//打开HKEY_LOCAL_MACHINE下的SYSTEM RegistryKey regControlSet001 = regSYSTEM.OpenSubKey("ControlSet001", true);//打开ControlSet001 RegistryKey regControl = regControlSet001.OpenSubKey("Control", true);//打开Control RegistryKey regManager = regControl.OpenSubKey("Session Manager", true);//打开Control RegistryKey regEnvironment = regManager.OpenSubKey("Environment", true); return regEnvironment; } /// <summary> /// 设置系统环境变量 /// </summary> /// <param name="name">变量名</param> /// <param name="strValue">值</param> public static void SetSysEnvironment(string name, string strValue) { try { OpenSysEnvironment().SetValue(name, strValue); } catch { return; } } /// <summary> /// 检测系统环境变量是否存在 /// </summary> /// <param name="name"></param> /// <returns></returns> public bool CheckSysEnvironmentExist(string name) { if (!string.IsNullOrEmpty(GetSysEnvironmentByName(name))) return true; else return false; } /// <summary> /// 添加到PATH环境变量(会检测路径是否存在,存在就不重复) /// </summary> /// <param name="strPath"></param> public static void SetPathAfter(string strHome) { string pathlist = GetSysEnvironmentByName("PATH"); //检测是否以;结尾 if (pathlist.Substring(pathlist.Length - 1, 1) != ";") { SetSysEnvironment("PATH", pathlist + ";"); pathlist = GetSysEnvironmentByName("PATH"); } string[] list = pathlist.Split(';'); bool isPathExist = false; foreach (string item in list) { if (item == strHome) isPathExist = true; } if (!isPathExist) SetSysEnvironment("PATH", pathlist + strHome + ";"); } public static void SetPathBefore(string strHome) { string pathlist = GetSysEnvironmentByName("PATH"); string[] list = pathlist.Split(';'); bool isPathExist = false; foreach (string item in list) { if (item == strHome) isPathExist = true; } if (!isPathExist) SetSysEnvironment("PATH", strHome + ";" + pathlist); } public static void SetPath(string strHome) { string pathlist = GetSysEnvironmentByName("PATH"); string[] list = pathlist.Split(';'); bool isPathExist = false; foreach (string item in list) { if (item == strHome) isPathExist = true; } if (!isPathExist) SetSysEnvironment("PATH", pathlist + strHome + ";"); } } }