If I have a dictionary where the values are delegates (for example, lets say the delegates return void and take two int arguments), what is the correct syntax to call/invoke a delegate once it's retrieved via a key. This is essentially a function dispatch mechanism, but I'm too new to C# to know the calling details. Thanks.
Syntax help: calling a delegate from a dictionary
Michael Tallhamer
Assuming you’ve got something like this already:
public delegate void Delegate1(int x);
public delegate void Delegate2(string s);
public delegate int Delegate3();
public void Func1(int x)
{
Console.WriteLine("Func1 called");
}
public void Func2(string s)
{
Console.WriteLine("Func2 called");
}
public int Func3()
{
Console.WriteLine("Func3 called");
return 0;
}
And your Dictionary is strongly typed and you’ve already populated it similar to this:
Dictionary<string, Delegate> dict = new Dictionary<string, Delegate>();
dict.Add("Func1", new Delegate1(Func1));
dict.Add("Func2", new Delegate2(Func2));
dict.Add("Func3", new Delegate3(Func3));
The easiest way to invoke the various delegates is to index them by name and call DynamicInvoke() and pass in the needed parameters required by the delegate ala:
dict["Func1"].DynamicInvoke(new object[] { 4 });
dict["Func2"].DynamicInvoke(new object[] { "Hello" });
dict["Func3"].DynamicInvoke(null);
Does this answer your question