Hi,

Here is the summary of what I am trying to do in an ASP.NET page and code behind:

The ASPX page has a hidden input text ID="NewStorage"
The code behind creates an array, serializes it and stores the value of the resulting string to the Value of input "NewStorage"
Then ScriptManager.RegisterStartupScript is supposed to store the value of the input "NewStorage" to the localStorage. But all I see in the local storage is a key but the value is "undefined" Here is the code:

         // PmXmlFiles is an Arraylist containing 3 strings (created before this line)

         string cPmXmlFiles;
         // Serialize the Arraylist using JsonConvert()
         cPmXmlFiles = JsonConvert.SerializeObject(PmXmlFiles);
         // I check in the debugger and the value cPmXmlFiles appears to be correct

         // set the value of the above string to the hidden Input
         NewStorage.Value = cPmXmlFiles;

         // I also check in the debugger that the Value of the NewStorage appears to be a string.

         // The line below is supposed to store the Value of NewStorage to the localStorage
         ScriptManager.RegisterStartupScript(this, GetType(), "cost_center_key_string", "localStorage.setItem('pm_xml_files', 
$('#NewStorage').val());", true);
         
         // But somehow it does not work

What am I missing?