Change last clicked button properties c#

Question

In my form i have about 36 buttons and for each i have the following code

        button3.BackColor = Color.DarkGreen;
        button_click("A1");
        button3.Enabled = false;
        nr_l++;
        textBox4.Text = Convert.ToString(nr_l);

which means I will have this code x 36 times, I want to make a method that does this but I dont know how to change last clicked buttons properties, i want something like this :

    private void change_properties()
    {
    last_clicked_button.backcolor = color.darkgreen;
    button_click("A3"); //this is a method for adding A3 to a string,   
    last_clicked_button.enabled = false;
    nr_l++;
    textbox4.text = convert.tostring(nr_l);
    }

    private void button3_Click(object sender, EventArgs e)
    {
    change_properties();
    }

How can i tell change_properties method that it should work with button3 in case it was clicked?

Answer 1

You can send the button as a parameter to the method -

change_properties(Button lastClickedButton)

And then use this parameter to do what you want.

Answer 2

If what you do with your 36 buttons are identical, then for each of your Button.Click events (likely declared in your designer.cs file), refers it to a single event handler

this.button1.Click += new System.EventHandler(this.button_Click); //notice the event name is the same
....
this.button2.Click += new System.EventHandler(this.button_Click); //notice the event name is the same
....
this.button36.Click += new System.EventHandler(this.button_Click); //notice the event name is the same

And then in your event handler, convert the sender object to Button class by using as Button

private void button_Click(object sender, EventArgs e)
{
    Button button = sender as Button; //button is your last clicked button
    //do whatever you want with your button. This is necessarily the last clicked
}

If it is not, then just leave the declarations of the event handler but make the button as the input for your change_properties method

private void change_properties(Button button)
{
    button.backcolor = color.darkgreen;
    button_click("A3"); //this is a method for adding A3 to a string,   
    button.enabled = false;
    nr_l++;
    textbox4.text = convert.tostring(nr_l);
}

private void button1_Click(object sender, EventArgs e) //the name of the event handler is unique per `Button` Control
{
    change_properties(sender as Button);
    //do something else specific for button1
}

....

private void button36_Click(object sender, EventArgs e)
{
    change_properties(sender as Button);
    //do something else specific for button36
}