如何在从radcombobox中选择一个值时可以看到一个控件radcombobox的事件我必须写一个javascript [英] how to visible a control while selecting an value from radcombobox on which event of a radcombobox i have to write a javascript

问题描述

实际上我想在组合框中选择值后显示发送按钮是否可能

Actually i want to display the send button after selecting the value in combobox is it possible

推荐答案

你好，



对于RadCombobox，你可以按照以下方式进行。

Hello,

For RadCombobox you do it following way.

<script language="javascript" type="text/javascript">
    function OnClientSelectedIndexChanged(sender, eventArgs) {
        var item = eventArgs.get_item();
        if (item.get_text() === "SOME VALUE") {
            var btn = document.getElementById("YOUR BUTTON ID");
            btn.className = 'show_button';
        }
    }
</script>

<telerik:radcombobox 

    id="RadComboBox1" 

    runat="server" 

    onclientselectedindexchanged="OnClientSelectedIndexChanged">
</telerik:radcombobox>l;

您的按钮最初会被隐藏。这可以通过应用CSS规则轻松实现。当用户选择一个值时，您应用一个新的CSS规则，使其可见。以下示例显示了CSS规则。

Your button will be initially hidden. This can be easily achieved by applying a CSS rule. When user selects a value you then apply a new CSS Rule which makes it visible. Following samples shows the CSS rules.

<style type="text/css">
.hidden_button { visibility: hidden; }
.show_button { visibility: visible; }
</style>

问候，

Regards,

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