injection json data in the master page

I'd like to inject some javascript on every page; basically, it's a json string.

In my master page, I have this:

public partial class TheMasterPage : System.Web.UI.MasterPage
{
  protected void Page_Init(object sender, EventArgs e)
    {
    if (Session["TheData"] == null) 
           {Session["TheData"] = GetData(DateTime.Today.Date;); }
    }
}

This checks to see if the session contains the data I need for the json serialization.

What I'd like to do i开发者_运维知识库s have the data in the session to be included in the javascript of every page.

In the aspx of the page, I have:

<asp:ContentPlaceHolder id="head" runat="server">
   <script type="text/javascript">
      var TheJsonData =... ;
   </script>
</asp:ContentPlaceHolder>

How do I inject the json data in there? If I do this, which gets executed first? The aspx injection or the Page_Init function?

I use the following code for the serialization:

TheDataList = (List<MyModel>)Session["TheData"];

JavaScriptSerializer serializer = new JavaScriptSerializer();
serializer.RegisterConverters(new JavaScriptConverter[] { new MyModel() });
String result = serializer.Serialize(TheDatatList);

What I want to be able to do is $(document).ready(function () {ShowData(TheJsonData) }); with the variable TheJsonData already loaded when the document ready event fires.

Thanks.

Try like this:

<script type="text/javascript">
    var TheJsonData = <%= new JavaScriptSerializer().Serialize(Session["TheData"]) %>;
</script>

And the end result should look something like this:

<script type="text/javascript">
    var TheJsonData = [{ prop1: 'value1', prop2: 'value2' }, { prop1: 'value3', prop2: 'value4' }];
</script>

Page_Init will run before the code in the view and would set the value in the session.