环境：ASP NET 2.0 - 生产服务器没有 Ajax 控制工具包，所以这里没有真正的控制工具包可以使用。
3 RadioButtons List：加载列表一，回发后，列表一中的项目用于选择Lab值。选择实验室值后，将填充第三个单选按钮列表。有一些文本框，但在示例中未显示。文本框回发自己的更改。如果两个文本框都不为空，则为会话创建一条记录。
现在，如果第三个单选按钮列表从默认值更改，则会出现一系列 3 个隐藏的用户控件，它们代表 3 个级别的更改原因（数据库中的子/父记录）。
我遇到的问题是，当我在单选按钮列表上选择不同的项目时，单选按钮 3 OnSelectedIndex 在我的用户控件触发后触发。我的用户控件需要第三个列表的值才能进入数据库并获取与实验室关联的正确记录集。
问题是因为最后一个单选按钮列表直到 web 控件加载后才被处理，安装用户控件的代码永远不会发生。
这是基本的 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>
这是后面的页面：
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;
}
}
以下是用户代码示例：
此代码永远不会触发，因为此处没有第三个按钮列表数据：
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
}
}
}
}
我希望这很清楚。我已经
--- * --- 自原始发布以来：添加了简单的 javascript/OnDataBound 函数 Primary(object) { alert("Value Clicked :" + object); }
protected void rdoPrimary_DataBound(object sender, EventArgs e) { RadioButtonList rdlPrimary = (RadioButtonList)sender; foreach (ListItem li in rdlPrimary.Items) { li.Attributes.Add("onclick", "javascript:Primary('" + li.Value + "')"); } }