CODEWITHSUNDEEP
c#c#-4.0dynamic
JL.
JL.

Reputation: 81342

Can a dynamic method in C# 4 be used to return a different data type with each call?

If I have a dynamic method in C# 4. Can it be used to return for example in 1 call - A string, in another call a Boolean, and in another call an int?

Or is the return type of the dynamic method set after the first runtime call? Meaning if the first time I call the method it returns a boolean, must all subsequent calls to that method also return boolean?

Upvotes: 3

Views: 233

Answers (2)

arviman
arviman

Reputation: 5255

Any object can be converted to dynamic type implicitly, so you should be able to to do so. Dynamic in most cases functions like type object.

Upvotes: 1

JaredPar
JaredPar

Reputation: 755209

A dynamic method is free to change it's return data at any point it chooses. For example

class Example {
  private int m_count;
  public dynamic GetData() {
    switch(m_count++) {
      case 0: return 42;
      case 1: return "hello world";
      default: return new object();
    }
  }
}

A dynamic typed method is little different than a method that has an object return type. It's free to return any values which are compatible with object. The only issue is ensuring the caller of the method can handle the various values.

Upvotes: 8

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