Parameterattribute default value (C# cmdlet) in PowerShell

Question

I'm designing a cmdlet using plain C#. Is it possible to define a default value for a parameter?

Script cmdlet:

[Parameter] [string] $ParameterName = "defaultValue"

Which is the equivalent for C#?

[Parameter]
public string ParameterName { get; set; }

score 9 · Answer 1 · edited Apr 04 '19 at 18:55

9

Since C# 6.0 has been released:

[Parameter]
public string ParameterName { get; set; } = "defaultValue";

edited Apr 04 '19 at 18:55

Peter Mortensen

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answered Oct 30 '17 at 09:49

isxaker

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score 9 · Accepted Answer · edited Apr 22 '16 at 13:05

9

With auto-implemented properties, you can't. You will need to create the actual getter and setter.

Something like this:

private string _ParameterName = "defaultvalue";

[Parameter]
public string ParameterName 
{
     get
     {
          return _ParameterName ;
     }
     set
     {
         _ParameterName  = value;
     }
}

edited Apr 22 '16 at 13:05

Matt

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answered Feb 08 '11 at 08:43

Shekhar_Pro

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1

Thanks. Maybe it was too obvious... I could do it with auto-implemented too, just setting them in the constructor. – fra Feb 08 '11 at 08:47
yes sure why not...i answered in the context of the example you showed in question – Shekhar_Pro Feb 08 '11 at 08:48

Parameterattribute default value (C# cmdlet) in PowerShell

2 Answers2