通过JavaScript的变量codebehind [英] Pass javascript variable to Codebehind
问题描述
它是更多钞票从JavaScript变量得到一个值,并用它到Visual Basic code,无任何控制incrusting值。</ P>
没有服务器控制的任何帮助,您不能访问从codebehind一个js变量。
你可以在网页重定向到自身,并通过该值作为URL参数( window.location.href = window.location.href +值=考验?
)。但我认为,这是不是你想要的,因为它迫使回传。
所以最好的方法是使用一个hiddenfield:
在javascript函数:
&LT;脚本类型=文/ JavaScript的&GT;
函数foo(){
VAR隐藏=的document.getElementById('hidValue');
hidden.value =测试;
}
&LT; / SCRIPT&GT;
在ASPX:
&LT;输入ID =hidValue类型=隐藏=服务器/&GT;
在code后面
保护hidValue作为HtmlControls.HtmlInputHidden保护小组的Page_Load(BYVAL发件人为对象,BYVAL E上System.EventArgs)把手Me.Load
昏暗hiddenValue = hidValue.Value
结束小组
Is it posible to get a value from a javascript variable and use it into visual basic code without incrusting value on any control.
You cannot access a js-variable from codebehind without any help of a server-control.
You could redirect the page to itself and pass that value as URL-Parameter(window.location.href = window.location.href + "?value=test";
). But i assume that this is not what you want because it forces a postback.
So the best way is to use a hiddenfield:
In javascript function:
<script type="text/javascript">
function Foo(){
var hidden=document.getElementById('hidValue');
hidden.value="test";
}
</script>
On aspx:
<Input id="hidValue" type="hidden" runat="server" />
In code behind
Protected hidValue As HtmlControls.HtmlInputHidden
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim hiddenValue = hidValue.Value
End Sub
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