从javascript调用asp.net codebehind函数 [英] calling asp.net codebehind function from javascript
问题描述
我有一个名为LinkControl的自定义控件:
I have custom control called LinkControl :
<asp:Panel runat="server">
<script language="javascript" type="text/javascript">
function CheckImage() {
var str = document.getElementById('<%=lblBookmarkId.ClientID%>').firstChild.nodeValue;
PageMethods.CodebehindCheckImage(str);
return false;
}
</script>
<asp:Label runat="server" ID="lblBookmarkId" Style="visibility: hidden;" />
<asp:Button runat="server" ID="btnCheck" Text="Check" OnClientClick="return CheckImage();" CausesValidation="false""/>
</asp:Panel>
控件用于转发器中的页面书签,放在转发器中的每个控件具有lblBookmarkId.Text的不同值。
That control is used on Page Bookmarks inside repeater, each control put inside repeater has diffrent value of lblBookmarkId.Text.
隐藏在页面书签后的代码具有功能:
Codebehind page Bookmarks has function :
[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public static bool CodebehindCheckImage(string str)
{
return true;
}
问题是,当我按btnCheck按钮来检查Repeater内的任何控件时,当我在功能CodebehindCheckImage中进行调试时,我总是会得到包含在Repeater中的最后一个控件中的字符串lblBookmarkId.Text。
The problem is that when I press button btnCheck for any of the controls inside Repeater, when I debug in function CodebehindCheckImage I always get string lblBookmarkId.Text contained in last control that is present in Repeater.
任何建议都将受到欢迎。
Any suggestions would be welcome.
关于
Wojciech
Regards Wojciech
推荐答案
您可以按以下方式修改javascript函数;
you can modified your javascript function like below;
function CheckImage(str) {
PageMethods.CodebehindCheckImage(str);
return false;
}
&更改中继器中的代码以附加onclientClick,如下所示:
& change code in your repeater to attach onclientClick like below
<asp:Button runat="server" ID="btnCheck" Text="Check"
OnClientClick='<%# Eval("BookMarkText", "return CheckImage(\"{0}\");") >
其中 BookMarkText与您使用书签标签绑定的内容相同。因此也无需使用隐藏的书签标签。
where "BookMarkText" is same what you are binding with bookmark label. so no need to use hidden bookmark label also.
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