Environment.CommandLine Property

Reference

Definition

Namespace:: System

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.Runtime.Extensions.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: Environment.cs

Source:: Environment.cs

Source:: Environment.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets the command line for this process.

public:
 static property System::String ^ CommandLine { System::String ^ get(); };

public static string CommandLine { get; }

static member CommandLine : string

Public Shared ReadOnly Property CommandLine As String

Property Value

String

A string containing command-line arguments.

Examples

The following example displays its own command line.

using namespace System;

int main()
{
   Console::WriteLine();
   
   //  Invoke this sample with an arbitrary set of command line arguments.
   Console::WriteLine( "CommandLine: {0}", Environment::CommandLine );
}
/*
The example displays output like the following:

C:\>env0 ARBITRARY TEXT

CommandLine: env0 ARBITRARY TEXT
*/

using System;

class Example
{
    public static void Main()
    {
       Console.WriteLine();
       //  Invoke this sample with an arbitrary set of command line arguments.
       Console.WriteLine("CommandLine: {0}", Environment.CommandLine);
    }
}
// The example displays output like the following:
//       C:\>env0 ARBITRARY TEXT
//
//       CommandLine: env0 ARBITRARY TEXT

open System

//  Invoke this sample with an arbitrary set of command line arguments.
printfn $"\nCommandLine: {Environment.CommandLine}"
// The example displays output like the following:
//       C:\>env0 ARBITRARY TEXT
//
//       CommandLine: env0 ARBITRARY TEXT

Class Example
   Public Shared Sub Main()
      Console.WriteLine()
      '  Invoke this sample with an arbitrary set of command line arguments.
      Console.WriteLine("CommandLine: {0}", Environment.CommandLine)
   End Sub 
End Class 
' The example displays output like the following:
'       C:\>CommandLine ARBITRARY TEXT
'       
'       CommandLine: CommandLine ARBITRARY TEXT

Remarks

This property provides access to the program name and any arguments specified on the command line when the current process was started.

The program name can include path information, but is not required to do so. Use the GetCommandLineArgs method to retrieve the command-line information parsed and stored in an array of strings.

The maximum size of the command-line buffer is not set to a specific number of characters; it varies depending on the Windows operating system that is running on the computer.

Applies to

Product	Versions
.NET	Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1

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