How to check Button clicked in general methode?

Question

I have tried with below

 

public partial class PaymentSearch : System.Web.UI.Page

{

   private bool button1WasClicked = false;

   

   

   protected void linkToday_Click(object sender, EventArgs e)

   {

      button1WasClicked = true;

    }

    

  protected void ddlRecordPayment_SelectedIndexChanged(object sender, EventArgs e)

  {

  gridAllPaymentBind(1);

  }

   public void gridAllPaymentBind(int pageIndex)

   {

   if (button1WasClicked == true)

  {

   result = 3;

    command.Parameters.AddWithValue("@result", result);

   }

 

 }

 

but in 'gridAllPaymentBind' methode ' button1WasClicked'  getting false value where I alredy clicked link button before dropdown list change event fire.