如何使用__doPostBack() [英] How to use __doPostBack()
问题描述
我试图创建一个使用__doPostBack()在asp.net的asyncrhonous回传,但我不知道该怎么做。我想用香草的JavaScript。
I'm trying to create an asyncrhonous postback in asp.net using __doPostBack(), but I have no idea how to do it. I want to use vanilla javascript.
一些简单的像一个按钮,点击会导致__doPostBack()事件激发。我只是想了解该机制是如何工作的。
Something simple like a button click can cause the __doPostBack() event to fire. I'm just trying to learn how the mechanism works.
推荐答案
您可以在您的Web表单与一个名为btnSave例如按钮尝试这个办法:
You can try this in your web form with a button called btnSave for example:
<input type="button" id="btnSave" onclick="javascript:SaveWithParameter('Hello Michael')" value="click me"/>
<script type="text/javascript">
function SaveWithParameter(parameter)
{
__doPostBack('btnSave', parameter)
}
</script>
而在你的code后面添加这样的事情来读取值,并在其上运行:
And in your code behind add something like this to read the value and operate upon it:
public void Page_Load(object sender, EventArgs e)
{
string parameter = Request["__EVENTARGUMENT"]; // parameter
// Request["__EVENTTARGET"]; // btnSave
}
给一个尝试,让我们知道这是否为你工作。
Give that a try and let us know if that worked for you.
这篇关于如何使用__doPostBack()的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!