我遇到了這種情況下這麼多的問題。我谷歌了不同的解決方案，但沒有幫助我，最後我遇到了這個解決方案。希望能幫助別人。
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=>在這裏，我們需要使用服務器端控件綁定。 =>我們可以使用c＃codebeheind文件輕鬆完成此操作。
步驟1：在.aspx頁面中爲外部div編寫父ID，並將其設置爲runat =「server」。我們將把我們的bootstrap標籤div放在這個div裏面，這樣我們就可以很容易地訪問到手風琴類的子元素。
<div class="panel-group accordion" runat="server" id="parenAccordian">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a runat="server" href="Master.aspx?loadUC=One" data-target="#collapseOne" data-parent=".accordion"
data-toggle="collapse" class="accordion-toggle tab_design" target="_self" aria-expanded="true" aria-controls="collapseOne">
<span class="glyphicon glyphicon-plus" id="spanOne" runat="server"></span>
<asp:Label ID="lblTabOne" runat="server" Text="TabOne"></asp:Label>
</a>
</h4>
</div>
<div class="panel-collapse collapse" runat="server" id="collapseOne">
<div class="panel-body">
<div runat="server" id="divOne">
</div>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a runat="server" href="Master.aspx?loadUC=One" data-target="#collapseTwo" data-parent=".accordion"
data-toggle="collapse" class="accordion-toggle tab_design" target="_self" aria-expanded="true" aria-controls="collapseOne">
<span class="glyphicon glyphicon-plus" id="spanTwo" runat="server"></span>
<asp:Label ID="lblTabTwo" runat="server" Text="TabTwo"></asp:Label>
</a>
</h4>
</div>
<div class="panel-collapse collapse" runat="server" id="collapseTwo">
<div class="panel-body">
<div runat="server" id="divTwo">
</div>
</div>
</div>
</div>
</div>
第2步：重定向到母版頁並傳遞查詢字符串作爲參數來加載單擊的用戶控件。 whater根據查詢字符串參數，我們將要採取的查詢字符串參數到用戶控件綁定到該div只有 如：HREF =「Master.aspx loadUC =一個？」
第3步：寫頁面加載事件代碼
string userControlID = ((System.Web.UI.Page)(sender)).ClientQueryString;
var controlID = userControlID.Substring(userControlID.LastIndexOf('=') + 1);
if (Request.QueryString["loadUC"] == controlID)
{
//get clicked control id
HtmlGenericControl collapseDiv = (HtmlGenericControl)parenAccordian.FindControl("collapse" + controlID);
collapseDiv.ID = "collapse" + controlID;
collapseDiv.Attributes.Add("id", collapseDiv.ID);
//load clicked user control and add bind to html div
UserControl userControl = (UserControl)Page.LoadControl("~/UserControls/ModuleEngineering/SystemConfiguration/" + "UC" + controlID + "System.ascx");
userControl.ID = "test";
string userControlDivID = "div";
string modifiedControlDivID = userControlDivID.Insert(3, controlID + "Data");
HtmlGenericControl userControlDiv = (HtmlGenericControl)parenAccordian.FindControl(modifiedControlDivID);
userControlDiv.ID = modifiedControlDivID;
userControlDiv.Controls.Add(userControl);
//add remove collapse plus minus class on click
HtmlGenericControl spanDiv = (HtmlGenericControl)parenAccordian.FindControl("span" + controlID);
spanDiv.ID = "span" + spanDiv;
spanDiv.Attributes.Add("id", spanDiv.ID);
string newTabValue = Convert.ToString(Session["NewCollapseTabValue"]);
if (Session["NewCollapseValue"] == null)
{
Session["NewCollapseValue"] = "panel-collapse collapse";
}
if (Request.QueryString["loadUC"] == newTabValue)
{
if (Request.QueryString["loadUC"] == newTabValue)
{
if (collapseDiv.Attributes["class"] != Convert.ToString(Session["NewCollapseValue"]))
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-plus");
}
else
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse in");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-minus");
}
}
if (Request.QueryString["loadUC"] != newTabValue)
{
if (collapseDiv.Attributes["class"] != Convert.ToString(Session["NewCollapseValue"]))
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse in");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-minus");
}
else
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-plus");
}
}
Session["NewCollapseValue"] = collapseDiv.Attributes["class"];
}
if (Request.QueryString["loadUC"] != newTabValue)
{
if (collapseDiv.Attributes["class"] == Convert.ToString(Session["NewCollapseValue"]))
{
if (collapseDiv.Attributes["class"] == Convert.ToString(Session["NewCollapseValue"]))
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse in");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-minus");
}
else
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-plus");
}
}
else if (collapseDiv.Attributes["class"] != Convert.ToString(Session["NewCollapseValue"]))
{
if (collapseDiv.Attributes["class"] != Convert.ToString(Session["NewCollapseValue"]))
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse in");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-minus");
}
else
{
collapseDiv.Attributes.Add("class", "panel-collapse collapse");
spanDiv.Attributes.Add("class", "glyphicon glyphicon-plus");
}
}
Session["NewCollapseValue"] = collapseDiv.Attributes["class"];
}
Session["NewCollapseTabValue"] = controlID;
步驟4：如果你點擊Bootstarp選項卡按鈕或加號圖標或選項卡標題將「在面板垮垮」類從代碼隱藏添加和刪除面板垮垮類
第5步：如果再次點擊Bootstarp標籤按鈕或減號圖標或Tab標題，它將添加'panel-collapse collapse'從代碼隱藏中移除類並移除面板摺疊崩潰類。它會按預期工作。
第5步：和把所有頁裝訂方法，dropdownlistbinding法等在Page_Init方法的（）mentod
始終使用parseInt'的'第二個參數。 – gcampbell