各位细心人士，进来帮帮忙，为什么会出现相同的页面？（自认为没有传错值，没有写错条件）

Question

 //跳转到未解决的页面并传值
        protected void LinkButton3_Click(object sender, EventArgs e)
        {
            int projectID = int.Parse(ViewState["ProjectID"].ToString());
            if (DropDownList1.SelectedValue == "0")
            {
                Response.Redirect("~/BuildController/UnsolvedProblem.aspx?pid=" + projectID + "&&id=1" + "&&Q_id=1");
            }
            else if(DropDownList1.SelectedValue=="1")
            {
                Response.Redirect("~/BuildController/UnsolvedProblem.aspx?pid=" + projectID + "&&id=1" + "&&Q_id=2");
            }
        }
    //跳转到解决的页面并传值
        protected void LinkButton2_Click(object sender, EventArgs e)
        {
            int projectID = int.Parse(ViewState["ProjectID"].ToString());
            if(DropDownList1.SelectedValue=="0")
            {
                Response.Redirect("~/BuildController/SolvedProblem.aspx?pid=" + projectID + "&&id=1" + "&&QQ_id=1");
            }
            else if (DropDownList1.SelectedValue == "1")
            {
                Response.Redirect("~/BuildController/SolvedProblem.aspx?pid=" + projectID + "&&id=1" + "&&QQ_id=2");
            }
        }
C#
 int QQ_id = int.Parse(Request.QueryString["QQ_id"].ToString());
            ViewState["QQ_id"] = QQ_id;            if (!IsPostBack)
            {
                item.Clear();
                string table = string.Empty;                if (id == 1)
                {
                    lblMeasureTitle.Visible = false;
                    lblMesure.Visible = false;
                    lblAnalysis.Text = "原因分析：";
                    lblBugTitle.Text = "规范要求：";
                    lblHistory.Text = "建议处理措施和结果：";                    item = bBuildError.GetAllByQualityed(userID, true, "质量规范");
                    ViewState["Date"] = item;
                    //gdvQStand.DataSource = SubStr(item);
                    //gdvQStand.DataBind();
                    ////设置表格式
                    //GridViewSet();                    if (QQ_id == 1)
                    {
                        lblTitle.Text = "质量规范预警记录（房建已解决）";
                        table = "BuildError";
                    }
                    else if (QQ_id == 2)
                    {
                        lblTitle.Text = "质量规范预警记录（市政已解决）";
                        table = "SZ_BuildError";
                    }
                }

Answer 1

 item = bBuildError.GetAll(table);
 table  表名