Trying to get javascript variable in vb.net codebehind
Question
I have a function where I am trying to get the username and password that the user entered. It IS being stored in "unixName" and "unixPass" on the client side. I have dUnixName and dUnixPass which one is a hidden input and the other is a label. They are different because I was playing around with different ways at getting this to work.
<script type="text/javascript">
// Internet Explorer/Firefox needs this script to show radio selection after Modal Popup
function enableRDO() {
document.getElementById("rdoUnix").checked = true;
// document.getElementById("dUnixName").value = document.getElementById("unixName").value;
//document.getElementById("dUnixPass").value = document.getElementById("unixPass").value;
document.getElementById('<%=dUnixName.ClientID %>').value = document.getElementById("unixName").value;
document.getElementById('<%=dUnixPass.ClientID %>').value = document.getElementById("unixPass").value;
return true;
};
1 answers
solution1
2 ACCPTED 2012-07-23 15:00:33
If I understand correctly: You have a value in javascript that you want to pass back to the server on a post back? Thats no problem, store the value in a an ASP:HiddenField and read it out in code behind. If I misunderstood your question let me know.
See: Access an asp:hiddenfield control in JavaScript
Example
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
function test() {
alert(document.getElementById('<%=txtBox.ClientID %>').value);
return false;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtBox" runat="server" />
<button onclick='test()'>Client Side Test</button>
</div>
<asp:Button ID="btnServer" runat="server" Text="Server Side Test"
onclick="btnServer_Click" style="height: 26px" />
</form>
</body>
</html>
protected void btnServer_Click(object sender, EventArgs e)
{
//read value here
string test = txtBox.Text;
}
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