RadioButtonList回发问题

Question

环境:ASP.NET2.0- Production没有，因此这里没有真正的控制工具包。

3 RadioButtons列表: List one加载，回发后，list one中的项用于选择Lab。一旦选择了一个实验室值，就会有第三个无线电按钮表。有一些文本框，但它们没有在示例中显示。文本框会自动回发更改。如果两个文本框都不是空的，则会为会话创建记录。

现在，如果第三个无线电按钮列表从默认状态更改，就会出现一系列隐藏的用户控件，这些控件代表了更改的三个原因(数据库中的子/父记录)。

我遇到的问题是，当我在无线电按钮列表上选择一个不同的项目时，无线电按钮3 OnSelectedIndex是在我的用户控制开火后发射的。我的用户控件需要第三个列表的值才能进入数据库并获得与实验室相关的正确记录集。

问题在于，直到web控件加载之后，安装用户控件的代码才会被处理。

下面是基本的HTML代码：

    <asp:RadioButtonList ID="rdoLab" runat="server" OnSelectedIndexChanged="rdoLab_OnSelectedIndexChange">
    </asp:RadioButtonList>
    <asp:TextBox ID="textbox1" runat="server" OnTextChanged="TextBoxProcess" />
    <asp:TextBox ID="textbox2" runat="server" OnTextChanged="TextBoxProcess" />
    <asp:RadioButtonList ID="rdoPrimary" RepeatColumns="3" OnSelectedIndexChanged="rdoPrimary_OnSelectedIndexChanged"  runat="server"  ToolTip="Select Normal, Hypo or Hyper - Normal is default value." AutoPostBack="True" >
        <asp:ListItem Value="3" Text="Normal" Selected="true"/>
        <asp:ListItem Value="1" Text="Hypo" />                                
        <asp:ListItem Value="2" Text="Hyper" />
    </asp:RadioButtonList>
     <asp:Panel ID="UpdLab" runat="server" Visible="true"  EnableViewState="true">
            <asp:Table ID="tblAdmin" runat="server">
                <asp:TableRow>
                      <asp:TableCell runat="server" id="tblCell1" Visible="false" CssClass="tdCell"  VerticalAlign="top"> 
                            <uc1:Lab ID="Lab1" runat="server" EnableViewState="true" EnableTheming="true" />                                            
                      </asp:TableCell>
                      <asp:TableCell runat="server" ID="tblCell2" Visible="false"  CssClass="tdCell" VerticalAlign="top">
                            <uc1:Lab ID="Lab2" runat="server" EnableViewState="true" EnableTheming="true" />
                       </asp:TableCell>
                       <asp:TableCell runat="server" ID="tblCell3" Visible="false"   CssClass="tdCell" VerticalAlign="top">
                            <uc1:Lab ID="Lab3" runat="server" EnableViewState="true" EnableTheming="true" />
                       </asp:TableCell>
                </asp:TableRow>
            </asp:Table>

    </asp:Panel>                            

下面是后面的一页：

protected override void OnPreLoad(EventArgs e)
    {
        base.OnPreLoad(e);
        GetSessionVars();

        if (CommonUI.strTest((string)Session["rdoLabs"]) && CommonUI.strTest((string)Session["rdoPrimary"]) && Convert.ToString(hrdoLabs.Value) == (string)Session["rdoLabs"])
        {
            divLabLvl.Visible = true;
            // Get cboListItems from the web user controls...
            Session["ArrLstItems"] = "";
            ArrayList ArrLstItems = new ArrayList();
            ArrayList GetWuc = GetWUCS();

            for (int i = 0; i < GetWuc.Count; i++)
            {
                Lab wuc = (Lab)GetWuc[i];
                CheckBoxList cboItemList = (CheckBoxList)wuc.FindControl("cboItems");
                string cboItems = GetCboItemList(cboItemList);
                HiddenField hcboItems = (HiddenField)wuc.FindControl("hcboItems");
            }
            Session["ArrLstItems"] = (ArrayList)ArrLstItems;
        }

    } 
    protected void Page_Load(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {
            DbDataReader ddrGrp = rdoGroups();
            if (ddrGrp.HasRows)
            {
                rdoGroup.DataSource = ddrGrp;
                rdoGroup.DataBind();
            }
            ddrGrp.Close();
        }
        else
        {
            DbDataReader ddrLab = rdoUserLabs();
            if (ddrLab.HasRows)
            {
                rdoLabs.DataSource = ddrLab;
                rdoLabs.DataBind();
                if (CommonUI.strTest((string)Session["rdoLabs"]))
                {
                    if (Convert.ToInt32(Session["rdoLabs"]) > 0)
                    {
                        rdoLabs.SelectedValue = (string)Session["rdoLabs"];
                        SetLabCss();
                    }
                }
            }
            ddrLab.Close();
        }

    }

    protected void rdoGroup_OnSelectedIndexChanged(object sender, EventArgs e)
    {
        //...do some stuff
    }

    protected void rdoLabs_OnSelectedIndexChanged(object sender, EventArgs e)
    {
        //... reload 
    }

    protected DbDataReader rdoGroups()
    {

        int group_type_id = GroupTypeId();
        Group grp = new Group();
        return grp.GetGroups(group_type_id);

    }

    protected DbDataReader rdoUserLabs()
    {
        RadioButtonList rdoGrp = (RadioButtonList)CommonUI.FindCtrlRecursive(this.Master, "rdoGroup");
        int GroupId = Convert.ToInt32(rdoGrp.SelectedValue);
        LabAbnormalReasons lar = new LabAbnormalReasons();
        return lar.GetLabsList(GroupId);
    }

    protected void rdoPrimary_OnSelectedIndexChanged(object sender, EventArgs e)
    {
        Session["Save"] = ((RadioButtonList)sender).ID;
        RadioButtonList rdoGroups = (RadioButtonList)CommonUI.FindCtrlRecursive(this.Master, "rdoGroup");
        RadioButtonList rdoLabs = (RadioButtonList)CommonUI.FindCtrlRecursive(this.Master, "rdoLabs");
        int UserId = Convert.ToInt32(Session["UserId"]);
        int DocId = Convert.ToInt32(Session["DocId"]);
        SubmitLab_Data(arrLstItems, arrOthers);
    }

    protected void GetSessionVars()
    {

        RadioButtonList rdoGroup = (RadioButtonList)CommonUI.FindCtrlRecursive(this.Master, "rdoGroup");
        RadioButtonList rdoPrimary = (RadioButtonList)CommonUI.FindCtrlRecursive(this.Master, "rdoPrimary");
        RadioButtonList rdoLabs = (RadioButtonList)CommonUI.FindCtrlRecursive(this.Master, "rdoLabs");

        if (rdoGroup.SelectedIndex != -1)
        {
            Session["rdoGroup"] = (string)rdoGroup.SelectedValue;
        }
        if (rdoLabs.SelectedIndex != -1)
        {
            Session["rdoLabs"] = (string)rdoLabs.SelectedValue;
        }
        if (rdoPrimary.SelectedIndex != -1)
        {
            Session["rdoPrimary"] = (string)rdoPrimary.SelectedValue;

        }

    }

下面是用户代码的示例：

此代码从不触发，因为第三个按钮列表数据在这里不可用：

protected void Page_Load(object sender, EventArgs e)
    {
        /////*
        //// *  lab & Primary have been selected... 
        //// */
        int lvl = SetLvlId();
        int par_id = GetParentLvl();
        Lab wuc = GetWuc(lvl);
        if (wuc != null)
        {
            if (CommonUI.strTest(Convert.ToString(Session["rdoLabs"])) && CommonUI.strTest(Convert.ToString(Session["rdoPrimary"]))) 
            { 
                    // data in data base for this user, lab, doc identifier...
                    if (Convert.ToInt32(Session["rdoPrimary"]) > 0
                     {
                        // have user hdr data - see if item data is mapped...
                       // do some stuff here
                    }

            } 
        }
    }

我希望这是清楚的。我已经

受保护的void rdoPrimary_DataBound(对象发送方，EventArgs e) { RadioButtonList rdlPrimary =(RadioButtonList)发送方；foreach (ListItem li in rdlPrimary.Items) { li.Attributes.Add("onclick"，“javascript:Primary(‘’+ li.Value +”))；}

Answer 1

存储和检索您希望在SaveViewState和LoadViewState方法中保留的值，并查看它是否适用于您？还可以查看早期和以后的生命周期事件来处理逻辑- Init和OnPreRender。这在过去对我起过作用。