以编程方式使用C#进行环境变量路径设置 [英] environmental variable path setting using c# programatically

问题描述

我必须检查是否设置了环境变量"DDCI_HOME"，我是否使用了以下代码
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i have to check whether an environmental variable "DDCI_HOME" is set or not i used following code
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String EnviromentPath = System.Environment.GetEnvironmentVariable("DDCI_HOME", 0);
      if (EnviromentPath == null)
      {
     MessageBox.Show("Set the path to DDCI_Home environmentalvariable");
     SetEnvVar_AboutBox EnvSetting_obj = new SetEnvVar_AboutBox(compiler_str);
     EnvSetting_obj.Show();   
      }
      else
    MessageBox.Show(Environment.GetEnvironmentVariable("DDCI_HOME") + "path exist");

否则，请使用带有2个文本字段的AoutBox来提示用户提供envvalue
并使用一个确定按钮.当使用给定环境值并单击确定时，我已使用以下代码声明来设置环境变量.

other wise using an AoutBox with 2 text fields to prompt the user to give envvalue
and using one ok button . when the use give env value and click ok i have used following statement of code to set env variable.

System.Environment.SetEnvironmentVariable(Env_Var_textbox.Text, Env_value_textbox.Text, 0);

没有收到任何错误，但我无法正确设置环境变量，当我们右键单击MYCOMPUTER-> PROPERTIES-> ENVIRONMENTALVARIABLES-> ........

NOT GETTING ANY ERROR BUT I AM UNABLE SET ENV VARIABLE PROPERLY AND I AM UNABLE TO WHEN WE RIGHT CLICK ON MYCOMPUTER->PROPERTIES->ENVIRONMENTALVARIABLES->.....

推荐答案

如果您更改进程的环境变量，则更改不会影响用户或计算机设置.因此，它仅对您的应用程序可见，并且当您关闭应用程序时，设置消失了.

如果要更改用户设置，请尝试以下操作:

If you change the environment variable for the process the change doesn''t affect the user or the the computer settings. So it''s visible only to your application and when you close the application the setting is gone.

If you want to change the users settings, try something like:

System.Environment.SetEnvironmentVariable(Env_Var_textbox.Text, Env_value_textbox.Text, EnvironmentVariableTarget.User);

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