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Asked: 2026-06-04T04:30:36+00:00

In C# I can use the method Console.Error.WriteLine . This doesn’t work in Powershell,

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In C# I can use the method Console.Error.WriteLine. This doesn’t work in Powershell, instead I must write

[Console]::Error.WriteLine

Why square brackets, why the double colons?

ps. To be clear, I’m not interested in logging, I want to understand the syntax about types and objects and methods

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1 Answer

  1. Editorial Team

    Brackets = access to a type

    double colons = access to a static member of a type : [MyType] return a Type instance

    ex:

    c:> [System.Int32]

    IsPublic IsSerial Name BaseType

    ——– ——– —- ——–

    True True Int32 System.ValueType

    using the dot notation would only give you access to instance members of the Type instance (reflection related methods for most)…

    c:\> [System.Int32].Parse("3")

Method call failed because [System.Runtype] does not have any "Parse" member

c:\> [System.Int32].AssemblyQualifiedName

System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089

    so :: is the way to access static members of a Class

    c:\> [System.Int32]::Parse("3")
3
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