C# Environment ExpandEnvironmentVariables

Description

Environment ExpandEnvironmentVariables replaces the name of each environment variable embedded in the specified string with the string equivalent of the value of the variable, then returns the resulting string.

Syntax

Environment.ExpandEnvironmentVariables has the following syntax.

public static string ExpandEnvironmentVariables(
  string name
)

Parameters

Environment.ExpandEnvironmentVariables has the following parameters.

• name - A string containing the names of zero or more environment variables. Each environment variable is quoted with the percent sign character (%).

Returns

Environment.ExpandEnvironmentVariables method returns A string with each environment variable replaced by its value.

Example

The following example shows how to obtain the system drive and system root variables.

/* w w w  .  j av a  2 s . c  om*/
using System;

class Sample 
{
    public static void Main() 
    {
        String str;
        String nl = Environment.NewLine;
    
        String query = "My system drive is %SystemDrive% and my system root is %SystemRoot%";
        str = Environment.ExpandEnvironmentVariables(query);
        Console.WriteLine("ExpandEnvironmentVariables: {0}  {1}", nl, str);
    }
}

The code above generates the following result.