ajax call to a static method

Question

I am having a problem with an ajax call to a shared (static) vb.net function to obtain data from the database.

In a vb.net 2010 web form application, I needed to make a call from a javascript function to a shared (static) function to

obtain data from a sql server 2012 database. The first ajax call below is the original call and the second call is the one

I came up by copying the first call.

The problem is the first call always occurs before the second ajax call regardless of what I do with the code. There are cases when I

only want the second call to occur. By stepping through the code, I see that there is alot of jquery code that occurs.

$.ajax({

type: "POST",

contentType: "application/json; charset=utf-8",

url: document.location.pathname + "/GetStudentLetter",

data: "{ " + strData + " }",

dataType: "json",

success: function (data) {

LoadEditor(JSON.parse(data.d), milestone);

},

error: AjaxFailed

});

if (milestone == '999') {

$.ajax({

type: "POST",

contentType: "application/json; charset=utf-8",

url: document.location.pathname + "/Gettattschyr",

data: "{ " + strData + " }",

dataType: "json",

success: function (data) {

successtest(eval(data));

},

error: AjaxFailed

});

}

}

function successtest(sletter) {

var sle = sletter

_txtattschyr = sletter.d

if (_txtattschyr > '1') {

alert('You have selected student(s) having more than one Entry for the current school year. ');

return

}

}

Thus would you tell me what you think is wrong and/or tell me how I can change the second ajax call to try to solve this issue?