how to invoke PagePropertiesChanging event from codebehind like event handler

hello, the below event hadler invoke th btn2 clickevent, when you click btn_click. 
protected void btn_click(object sender, EventArgs e) {
EventHandler handler = btn2_click; // Where Foo is the event name if (handler != null) { handler (this, e); } }
protected void btn2_click(object sender, EventArgs e) { Response.Write("hello"); }

likewise, i need to invoke this below event handler. I tried this like above.But It throws an error.

protected void ListView2_PagePropertiesChanging(object sender, PagePropertiesChangingEventArgs e) {

}

i need to invoke that ListView2_PagePropertiesChanging inside the another method of clickevent. like below.
Protected void btn_click(object sender, eventargs e)
{
method1();
}
public void method1()
{
// here i want to invoke tha ...