如何添加查询字符串参数并进行分页

Question

我正在尝试使用手动分页来实现GridView。我想为分页添加query string param。这完全适用于SEO，而且是absolutely required。该代码已在网站上发布，约有500个条目（gridview中的帖子）。

现在公司希望我做一个查询字符串参数，因此搜索引擎可以遍历所有页面并捕获它。现在，搜索引擎只能看到gridview上的第1页。这就是我从SEO团队那里得知的。

我真的不知道如何做到这一点。请帮忙。我无法真正改变所有代码，因为它会弄乱所有已经存在的页面。

GirdView代码

<asp:GridView runat="server" AllowPaging="true" ID="entriesGridView" AutoGenerateColumns="false"
DataKeyNames="EntryId" ShowHeader="False" OnRowDataBound="entriesGridView_RowDataBound"
CssClass="grid" OnPageIndexChanging="entriesGridView_PageIndexChanging" PageSize="20">
<PagerStyle CssClass="pager"></PagerStyle>
      <Columns>
            // some template / bound fields
      </Columns>
      <EmptyDataTemplate>
            // empty results text....
      </EmptyDataTemplate>
      <EmptyDataRowStyle HorizontalAlign="Center" />
   </asp:GridView>

代码隐藏

protected void entriesGridView_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
      LoadEntriesGridView(false, false, false, sqlCriteria);
      entriesGridView.PageIndex = e.NewPageIndex;
      entriesGridView.DataBind();
}

的DataSource

public static EntryCollection LoadForCriteriaWithJoin(string sqlCriteria, bool isEmailQuery, bool isFullNameQuery, string sortExpression)
      {
            //DEFAULT SORT EXPRESSION
            if (string.IsNullOrEmpty(sortExpression)) sortExpression = "OrderBy";
            //CREATE THE DYNAMIC SQL TO LOAD OBJECT
            var selectQuery = new StringBuilder();
            selectQuery.Append("SELECT");
            selectQuery.Append(" CE.* ");
            selectQuery.Append("FROM EntryTable CE ");
            selectQuery.Append("JOIN ContestantsTable CC ");
            selectQuery.Append("ON CE.ContestantId = CC.ContestantId ");

            string whereClause = null;
            if (isEmailQuery)
                  whereClause = "WHERE CE.IsApproved = 1 AND CC.Email = @EmailAddress";
            else if (isFullNameQuery)
                  whereClause = "WHERE CE.IsApproved = 1 AND CC.FirstName + ' ' + CC.LastName LIKE '%' + @FullName + '%'" +
                        "OR CE.CName LIKE '%' + @FullName + '%'" +
                         "OR CE.CTitle LIKE '%' + @FullName + '%'" +
                          "OR CE.Answer1 + ' ' + CE.Answer2 + ' ' + Answer3 LIKE '%' + @FullName + '%'";
            else
                  whereClause = "WHERE CE.IsApproved = 2";     // returning Empty result...

            if (!String.IsNullOrEmpty(sqlCriteria))
                  selectQuery.Append(whereClause);

            selectQuery.Append(" ORDER BY " + sortExpression);
            var database = T.I.Database;
            var selectCommand = database.GetSqlStringCommand(selectQuery.ToString());

            if (isEmailQuery)
                  database.AddInParameter(selectCommand, "@Email", System.Data.DbType.String, sqlCriteria);
            if (isFullNameQuery)
                  database.AddInParameter(selectCommand, "@FullName", System.Data.DbType.String, sqlCriteria);

            //EXECUTE THE COMMAND
            var results = new EntryCollection();
            using (var dr = database.ExecuteReader(selectCommand))
            {
                  while (dr.Read())
                  {
                        var entry = new Entry();
                        MWCompetitionsEntry.LoadDataReader(entry, dr);
                        results.Add(entry);
                  }
                  dr.Close();
            }
            return results;
      }