this.txtRun_Price1.TextChanged += new System.EventHandler(this.CalAmouti);
this.txtRun_Quan1.TextChanged += new System.EventHandler(this.CalAmouti);
this.btnRun_Add.Click += new System.EventHandler(this.CalAmouti);
this.btnRun_Save.Click += new System.EventHandler(this.CalAmouti);