`What is the best method for transferring values from JavaScript to C# during page load?`

My approach to solving this issue has been as follows:

  1. I added a hidden field on the aspx page named hdnTime.

  2. Next, I wrote a JavaScript function to assign a value to the hidden field.

    <script type='text/javascript'>
     function getLocalTimeZone() {
         document.getElementById('ctl00_bcr_hdnTime').value = 10;
         var hidden = document.getElementById('ctl00_bcr_hdnTime');
         var timezone = String(new Date());             
         hidden.value = timezone.substring(timezone.lastIndexOf('(') + 1).replace(')', '').trim();             
     }

  3. On the C# page load, I implemented the following code.

    ScriptManager.RegisterStartupScript(Page, GetType(), "disp_confirm", "getLocalTimeZone()", true);

string test = hdnTime.Value;

However, I am encountering an issue where the value for hdnTime is blank.

If you have any insights or suggestions on what might be missing here, please let me know. Thank you!

javascriptc#asp.net

Answer №1

In programming, the Page_Load event is triggered prior to the document.ready function. This means that any values set in document.ready will not be accessible within the Page_Load event.

One workaround is to assign a value upon the click of a button, and then retrieve that value using C#.

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