關於DropDownList的控制项"XXX"必须置于runat=server的表单标记之中.

wwwiii520 2010-09-02 03:26:15

用ＪＳ刷新控件Content

服務器發送的Content

 public static string RenderControl(Control control)

        {

            StringWriter writer1 = new StringWriter(CultureInfo.InvariantCulture);

            HtmlTextWriter writer2 = new HtmlTextWriter(writer1);



            control.RenderControl(writer2);

            writer2.Flush();

            writer2.Close();



            return writer1.ToString();

        }



  function RefreshNumberList()

    {           

	    <%= ClientID %>.RefreshNumberList('<%= ClientID %>', document.getElementById('<%= kindDropDownList.ClientID %>').value,RefreshNumberListCallBack);

    }

    function RefreshNumberListCallBack(result)

    {

        if(result.error != null && result.error != "")

        {

            alert(result.error);

            return false;

        }

        document.getElementById('numbercontrol').innerHTML = result.value.NumberContent;

        return true;

    }

服务器的RefreshNumberList()方法返回Content

[AjaxMethod]

        public BorrowResult RefreshNumberList(string key)

        {

            numberDropDownList.DataSource = null;

            if (Setting.Instance.NumberList[key] is Hashtable)

            {

                numberDropDownList.DataSource = ((Hashtable)Setting.Instance.NumberList[key]);

                numberDropDownList.DataTextField = "value";

                numberDropDownList.DataValueField = "key";

                numberDropDownList.DataBind();

            }

            BorrowResult result = new BorrowResult();

            result.NumberContent = RenderControl(numberDropDownList);

            return result;

        }

然后子页面

 

<asp:Content ContentPlaceHolderID="bcr" runat="Server">

.....

.....

<div id="numbercontrol">

    <ctrl:ValuedDropDownList ID="numberDropDownList" runat="server" CssClass="InputField SmallWidth" />

</div>

.....
.....

母版页是一个Master页

<body>

    <form id="aspnetForm" runat="server">

        <asp:ContentPlaceHolder ID="bcr" runat="server" />

    </form>

</body>

为什么总是有错误咧？说
ValuedDropDownList的控制项"XXX"必须置于runat=server的表单标记之中.

在网上查了下说控件一定要放在<form runat="server"></form>的标记中　　
可我母版页有这个标记啊!!!!

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hejunheng 2010-09-02

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不要用母板页

wwwiii520 2010-09-02

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[Quote=引用 10 楼 kongwei521 的回复:]
子页面是引用母版页面了吗？ http://www.west263.com/www/info/41021-1.htm

<asp:Content ContentPlaceHolderID="bcr" runat="Server"> ..... .....
<form method="post" >// <form id="form2" runat="server">
<div id="n……
[/Quote]

子页面是嵌套在 Master页中的.

wwwiii520 2010-09-02

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有啊! 这是Master页.



<body>

    <form id="aspnetForm" runat="server">

        <asp:ContentPlaceHolder ID="bcr" runat="server" />

    </form>

</body>

蝶恋花雨 2010-09-02

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子页面是引用母版页面了吗？ http://www.west263.com/www/info/41021-1.htm

<asp:Content ContentPlaceHolderID="bcr" runat="Server"> ..... .....
<form method="post" >// <form id="form2" runat="server">
<div id="numbercontrol"> <ctrl:ValuedDropDownList ID="numberDropDownList" runat="server" CssClass="InputField SmallWidth" /> </div></form>

这样试试