是否有人知道如何使用AutoCompleteExtender（从AJAX控件工具包）prevent用户进入任何不建议值？

Does anybody know how using AutoCompleteExtender (from AJAX Control Toolkit) prevent user from entering anything not in suggested values?

推荐答案

像这样的东西可以帮助你。

Something like this can help you

Javascript的

Javascript

<script type="text/javascript">
        var isItemSelected = false;

        //Handler for AutoCompleter OnClientItemSelected event
        function onItemSelected() {
            isItemSelected = true;
        }

        //Handler for textbox blur event
        function checkItemSelected(txtInput) {
            if (!isItemSelected) {
                alert("Only choose items from the list");
                txtInput.focus();
            }
        }
</script>

ASPX

ASPX

<asp:Button onblur="checkItemSelected(this)" ../>
<ajax:AutoCompleteExtender OnClientItemSelected="onItemSelected" ../>