Timers in C#, how to control whats being sent to the timer1_tick

Question

In this following function, that gets executed whenever I do

timer1.Enabled  = true

private void timer1_Tick(object sender, EventArgs e)
{
//code here
}

How can I control what gets send to the (object sender, EventArgs e) ?

I want to use its parameters

Answer 1

The method signature is fixed, so you can't pass extra parameters to it. However, the this reference is valid within the event handler, so you can access instance members of the class (variables declared inside class but outside of any method).

Answer 2

1) You can use Tag property of your timer as userState

void timer1_Tick(object sender, EventArgs e)
{
    Timer timer = (Timer)sender;
    MyState state = timer.Tag  as MyState;
    int x = state.Value;
}

2) You can use field of reference type to read it in Timer's thread

void timer1_Tick(object sender, EventArgs e)
{
    int x = _myState.Value;
} 

3) You can use System.Threading.Timer to pass state to timer event handler

Timer timer = new Timer(Callback, state, 0, 1000);