.net - C# callbacks not working -

.net - C# callbacks not working -

i'm defining function takes function parameter (using microsoft (r) visual c# 2005 compiler version 8.00.50727.4927) weird error.

here's function definition:

public managementscope connectcomputerwmi(string computername, string username, string password, action callbackprocessend) {... }

and here's error:

error cs0305: using generic type 'system.action<t>' requires '1' type arguments

i'm not sure type system.action needs.

the error message makes doesn't know non-generic action delegate, , reason can think of you're targeting .net 2.0. in .net 2.0, action<t> existed; more versions introduced in .net 3.5, , more in .net 4.

edit: i've seen you're using visual studio 2005 - means are targeting .net 2.0. (did have previous version of question specified .net 4? have sworn did...)

that's problem... there various solutions. could declare own delegate:

public delegate void action();

or could utilize methodinvoker or (which has equivalent signature, unfortunately in windows forms namespace - not ideal if you're not using windows forms)...

or upgrade more modern version of visual studio , .net.

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