如何使用C#设置环境变量Path [英] How to set environment variable Path using C#

问题描述

我正在尝试为MySql设置路径环境变量.

I am trying to set path environment variable for MySql.

我没有收到错误，但是我的代码无法正常工作.

I don't get an error, but my code doesn't work.

代码:

第一:

string pathvar = @";C:\Program Files\MySQL\MySQL Server 5.1\bin\\";
System.Environment.SetEnvironmentVariable("PATH", pathvar);

第二:

string pathvar = System.Environment.GetEnvironmentVariable("PATH");
System.Environment.SetEnvironmentVariable("PATH", pathvar + @";C:\Program Files\MySQL\MySQL Server 5.1\bin\\");

谢谢您的帮助...

推荐答案

您正在将环境变量与程序相关联，但是您想将其与本地计算机相关联，以使其可用于每个程序.查看需要EnvironmentVariableTarget的重载.

You are associating the environment variable with your program, but instead you want to associate it with your local machine in order to make it available to every program. Look at the overload that takes an EnvironmentVariableTarget.

var name = "PATH";
var scope = EnvironmentVariableTarget.Machine; // or User
var oldValue = Environment.GetEnvironmentVariable(name, scope);
var newValue  = oldValue + @";C:\Program Files\MySQL\MySQL Server 5.1\bin\\";
Environment.SetEnvironmentVariable(name, newValue, scope);

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