[Solved] How to pass button object to function

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Make it a Click event handler, attach it to each button, and use the sender parameter as the button to change.

void button_Click(Object sender,  EventArgs e)
{
    var button = sender as Button;
    if(button != null)
    {
        button.Text = "X";
        button.ForeColor = System.Drawing.Color.Red;
    }

}

solved How to pass button object to function