protected void ButtonSNick_Click(object sender, EventArgs e)
        {
            string nick = TextBoxNickSum.Text.Trim();

            dtJifei = MsgBLL.GetMsgRecords(nick);
            GridViewJifei.DataSource = dtJifei;
            GridViewJifei.DataBind();
        }
        protected void GridViewJifei_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            // 得到该控件
            GridView theGrid      = sender as GridView;
            int      newPageIndex = 0;

            if (e.NewPageIndex == -3)
            {
                //点击了Go按钮
                TextBox txtNewPageIndex = null;

                //GridView较DataGrid提供了更多的API,获取分页块可以使用BottomPagerRow 或者TopPagerRow,当然还增加了HeaderRow和FooterRow
                GridViewRow pagerRow = theGrid.BottomPagerRow;

                if (pagerRow != null)
                {
                    //得到text控件
                    txtNewPageIndex = pagerRow.FindControl("txtNewPageIndex") as TextBox;
                }
                if (txtNewPageIndex != null)
                {
                    //得到索引
                    newPageIndex = int.Parse(txtNewPageIndex.Text) - 1;
                }
            }
            else
            {
                //点击了其他的按钮
                newPageIndex = e.NewPageIndex;
            }
            //防止新索引溢出
            newPageIndex = newPageIndex < 0 ? 0 : newPageIndex;
            newPageIndex = newPageIndex >= theGrid.PageCount ? theGrid.PageCount - 1 : newPageIndex;

            //得到新的值
            theGrid.PageIndex        = newPageIndex;
            dtJifei                  = MsgBLL.GetMsgRecords("");
            GridViewJifei.DataSource = dtJifei;
            GridViewJifei.DataBind();
        }