Casting action <line> to action <object>

Question

I need to pass Action<string>in Action<object>. Although this is not safe at all, in my case it will always be called with a string. I get this error:

Unable to cast object of type 'System.Action1[System.String]' to type 'System.Action 1 [System.Object]". >

Any clues? Reflection is fair play. Combining one delegate into another is not .

UPDATE: I created a new question in Creating an open delegate to set properties or getter with a better explanation of my problem and a solution that uses the packaging I want to improve

Answer 1

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// Original Version
void Method(string str) {
  // Operate on the string
}

// Modified version
void Method(object obj) { 
  string str = (string)obj;
  // operate on the string
}

Answer 2

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void method(String s)
{
  s.Trim();
}

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Answer 3

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ConcurrentDictionary<Type, Action<object>> _actions = new ConcurrentDictionary<Type, Action<object>>();
Action<string> actionStr = s => Console.WriteLine(s);

var actionObj = new Action<object>(obj => { 
  var castObj = (V)Convert.ChangeType(obj, typeof(V)); actionStr(castObj); 
} );

_actions.TryAdd(typeof(string), actionObj);

Answer 4

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Action<string> s;
Action<object> o;

object sTarget = s.Target;
object oTarget = o.Target;

MethodInfo sMethod = s.Method;
MethodInfo oMethod = o.Method;

// Time to invoke in a later time.
sMethod.Invoke(sTarget, new object[] { strVal });
oMethod.Invoke(oTarget, new object[] { objVal });

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