为什么列表框选中的索引发生了变化？ [英] why listbox selected index changed is not firing?

问题描述

我已经为sortlistbox项目编写了一个javascript方法，它很好地工作，我在文本框中输入的项目变得很高，但是当我点击突出显示的项目时，它会被选中为什么？选定的indexchanged无效。这是我的javascript代码：

i have written a javascript method to sortlistbox items it works well in a sence that the item that i type in text box gets highlited but when i click on the highlighted item it dosent gets selected why? the selected indexchanged is not working. here is my javascript code:

function SearchList() {
         var l = document.getElementById("<%= LBox.ClientID %>");
         var tb = document.getElementById("<%= txtDepartments.ClientID %>");
         if (tb.value == "") {
             ClearSelection(l);
         }
         else {
             for (var i = 0; i < l.options.length; i++) {
                 if (l.options[i].value.toLowerCase().match(tb.value.toLowerCase())) {
                     l.options[i].selected = true;

                     return false;
                 }
                 else {
                     ClearSelection(l);
                 }
             }
         }
     }

     function ClearSelection(l) {
         l.selectedIndex = -1;
     }

推荐答案

将自动回发改为真........ ..........

Make auto post back to True..................

一旦突出显示，就会被选中。单击所选项目不会更改索引，因此不会触发selectedIndexChanged事件。

Once it's highlighted, it is selected. clicking on a selected item does not change the index, so does not fire the selectedIndexChanged event.

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