如何清除Request.Param.Get("__ EVENTTARGET") [英] How do i clear the Request.Param.Get("__EVENTTARGET")
问题描述
我有一个Web表单，上面有2个控件.
I have a webform on which i have 2 controls.
1.超链接
2.图片按钮
Hyperlink的导航URL如下" javascript:__ doPostBack('Hello'，'')"
The Navigate URL for Hyperlink is as follows "javascript:__doPostBack('Hello','')"
并且图像按钮具有关联的onClick事件.
And the image button has an onClick event associated.
在我的页面加载中，我执行以下操作
In my Page load i do the following
if(Page.IsPostBack)
if(Page.IsPostBack)
{
string functionCall = Request.Params.Get("__ EVENTTARGET");
string functionCall = Request.Params.Get("__EVENTTARGET");
if(functionCall =="Hello")
if(functionCall == "Hello")
{
CallingHello();
CallingHello();
}
}
上面的示例说，当单击超链接时，我调用CallingHello()方法，当单击图像"按钮时，将调用关联的onclick事件.
The above sample says that when a hyperlink is clicked i call CallingHello() method and when Image button is clicked the onclick event associated is called.
现在，当我第一次调用超链接时，调用转到CallingHello()方法.执行此操作后，如果我单击图像"按钮，则不会清除"__EVENTTARGET"对话框.参数，并且仍然转到CallingHello() 方法.
Now when i first call the hyperlink the call goes to CallingHello() method. After this action if i click Image button it doesnt clear the "__EVENTTARGET" param and still goes to CallingHello() method.
我如何清除"__EVENTTARGET"参数.在第一次通话后.
how do i clear the "__EVENTTARGET" param. after the first call.
尝试过-Request.Param.Set("__ EVENTTARGET"，")-不支持的异常(只读收藏集)
Tried -- Request.Param.Set("__EVENTTARGET", "") -- Not Supported Exception (Read only collection)
Request.Param.Remove("__ EVENTTARGET")-不支持的异常(只读收藏集)
Request.Param.Remove("__EVENTTARGET") -- Not Supported Exception (Read only collection)
预先感谢
Rajesh
推荐答案
如果您使用 __ EVENTARGUMENT并切换那个吗?看这里: http://aspalliance.com/895_Understanding_the_JavaScript___doPostBack_Function.5
What if you use the __EVENTARGUMENT and switch off that? See here: http://aspalliance.com/895_Understanding_the_JavaScript___doPostBack_Function.5
-路易
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