C # Delegate of Reading notes

The use of C # proxies is primarily when you need to pass one method as a parameter to another method.

For example, start a thread to perform a task, and the method that the thread executes can be passed through the proxy.

A proxy consists of a method or multiple methods whose address is similar to a C + + function pointer, but it is type-safe.

1. Declaring an agent

delegate void Intmethodinvoker (int x);

This proxy can refer to the return value type is empty, there is a parameter for all methods, it is important to know that delegate is type safe.

Delegate Double Twolongsop (long first, long second);

There are two parameters that return a proxy with a double value.

Delegate string getastring ();

No arguments return a proxy with a value of string.

Public delegate string getastring ();

You can also describe the delegate's access rights.

2. Using proxies

The use of a proxy must first instantiate a proxy

Pri v a te delegate string getastring ();
static void Main ()
{
int x = 40;
getAString Firststringmethod = new getAString (x.tostring); Instantiate an agent and point the agent to X.tostring ();
Console.WriteLine ("String is {0}", Firststringmethod ()); Firststringmethod () becomes x.tostring () representative (agent)
With Firststringmethod initialized to X.tostring (),
The above statement is equivalent to saying
Console.WriteLine ("String is {0}", x.tostring ());
}

Not to be continued ...

C # Delegate of Reading notes