I am building a calendar with a reminder popup in ASP.NET WebForms. I want to fetch events from a SQL Server database and display them when a user clicks a date.

Currently, I tried using a Shared WebMethod with EnablePageMethods="true" like this:

 _
Public Shared Function GetEvents(dateStr As String) As String
    ' SQL fetch logic
End Function

And call it via jQuery AJAX:

$.ajax({
    type: "POST",
    url: "Cal.aspx/GetEvents",
    data: JSON.stringify({ dateStr: dateStr }),
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(response) { ... }
});

Problems I face:

• When calling the WebMethod, I get a 401 Unauthorized error.

• Using EnablePageMethods and Shared WebMethod seems tricky with authentication.

What I want:

• Fetch events from the database and show them in a popup for a selected date.

• Avoid 401 errors and make it simple to work with jQuery/AJAX.

What I’ve tried:

• Enabling EnablePageMethods="true"

• Using Shared WebMethods

• Attempting anonymous access in IIS

Question:
What is the best way to fetch and display data in a calendar popup in WebForms