AllComentlist.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class AllComentlist : System.Web.UI.Page
{
    SqlHelper dbcoment = new SqlHelper();
    public string BookId;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.Title = "所有评论";
            GetListPage();
            GetCommentInfo();
        }

    }
    public void GetCommentInfo()
    {
        BookId = Page.Request.QueryString["id"];
        float all = float.Parse(dbcoment.ReturnSql("select count(*) from CommentInfo where  BookId=" + BookId));
        float haoping = float.Parse(dbcoment.ReturnSql("select count(*) from CommentInfo where leibie='好评' and  BookId=" + BookId));
        float zhongping = float.Parse(dbcoment.ReturnSql("select count(*) from CommentInfo where leibie='中评' and  BookId=" + BookId));
        float chaping = float.Parse(dbcoment.ReturnSql("select count(*) from CommentInfo where leibie='差评' and  BookId=" + BookId));
        Label1.Text = ((haoping / all) * 100).ToString() + "%";
        Label2.Text = ((haoping / all) * 100).ToString() + "%";
        Label3.Text = ((zhongping / all) * 100).ToString() + "%";
        Label4.Text = ((chaping / all) * 100).ToString() + "%";
    }
    private void GetListPage()
    {
        string id = Page.Request.QueryString["id"];
        try
        {
            SqlConnection con = new SqlConnection(SqlHelper.connstring);

            con.Open();
            SqlDataAdapter sda = new SqlDataAdapter("select  * from  CommentInfo where BookId='" + id + "' order by Addtime desc  ", con);


            DataSet ds = new DataSet();
            sda.Fill(ds);
            PagedDataSource objPds = new PagedDataSource();
            objPds.DataSource = ds.Tables[0].DefaultView;

            objPds.AllowPaging = true;
            objPds.PageSize = 10;

            int CurPage;
            if (Request.QueryString["Page"] != null)
                CurPage = Convert.ToInt32(Request.QueryString["Page"]);
            else