private void Button1_ServerClick(object sender, System.EventArgs e)
        {
            if(int.Parse(ViewState["Count"].ToString())%2==1)
            {
                this.imgshow.Src="img\\2.gif";
            }
            else
            {
             this.imgshow.Src="img\\1.gif";
            }
            ViewState["Count"]=int.Parse(ViewState["Count"].ToString())+1;
        }

特别是是这句是什么意思int.Parse(ViewState["Count"].ToString())%2==1
谢谢 啊