實現“GridView搜索後，顯示結果，分頁後，仍然顯示搜索後的結果”

問題：gridview顯示學生的實驗報告，根據搜索條件搜索後，顯示搜索後的學生實驗報告信息，當點擊下一頁的時候，又回覆到所有學生的實驗報告信息。

解決方法：

1、在搜索之後，把dataset存入Session中

                Session.Add("ds", dssearch);

protected void btnSearch_Click(object sender, EventArgs e) { StringBuilder sb = new StringBuilder(); sb.Append("select tbReportInfo.ID,TeaExp,StuNum,StuName,Path,SubmitTime,Score,Comments,UploadStatus,ScoreStatus ,tbStudentInfo.StuNumber from tbReportInfo,tbStudentInfo where tbReportInfo.StuNum=tbStudentInfo.StuNumber and tbReportInfo.TeaNum=" + Session["teaLog_num"].ToString()); if (ddlExp.SelectedValue != "-1") { sb.Append("AND TeaExp='" + ddlExp.SelectedItem.Text + "'"); } if (ddlUStatus.SelectedValue != "-1") { sb.Append("AND UploadStatus='" + ddlUStatus.SelectedItem.Text + "'"); } if (ddlSStatus.SelectedValue != "-1") { sb.Append("AND ScoreStatus='" + ddlSStatus.SelectedItem.Text + "'"); } if (txtGuanJianZi.Text.Trim() != "") { sb.Append("AND (TeaExp like '%" + txtGuanJianZi.Text + "%' or UploadStatus like'%" + txtGuanJianZi.Text + "%' or Comments like'%" + txtGuanJianZi.Text + "%' or StuName like'%" + txtGuanJianZi.Text + "%' or StuNumber like'%"+txtGuanJianZi.Text+"%')");//可以通過分類名稱和分類的上級分類查詢 } Database db = new Database(); DataSet dssearch = db.GetDataSet(sb.ToString()); Session.Add("ds", dssearch); gvMngRep.DataSource = dssearch; gvMngRep.DataBind(); if (gvMngRep.Rows.Count != 0) { gvMngRep.HeaderRow.Cells[1].Visible = false; int i = 0; for (i = 0; i < gvMngRep.Rows.Count; i++) { gvMngRep.Rows[i].Cells[1].Visible = false; } } }

2、在gridview的PageIndexChanging函數中，加入判定，若Session不爲空，則gridview綁定session的數據集，若爲空，則綁定所有數據集

            gvMngRep.DataSource = (DataSet)Session["ds"];

protected void gvMngRep_PageIndexChanging(object sender, GridViewPageEventArgs e) { gvMngRep.PageIndex = e.NewPageIndex; if (Session["ds"] == null) { InitData(); } else { gvMngRep.DataSource = (DataSet)Session["ds"]; gvMngRep.DataBind(); if (gvMngRep.Rows.Count != 0) { gvMngRep.HeaderRow.Cells[1].Visible = false; int i = 0; for (i = 0; i < gvMngRep.Rows.Count; i++) { gvMngRep.Rows[i].Cells[1].Visible = false; } } } }