Json $ .post或.ajax或.getJSON

问题描述

我正在ASP.NET MVC2项目中工作.但是我遇到了一个问题，当我从控制器调用并获取异步数据时，该数据将在执行下一条语句后出现.

I am working in ASP.NET MVC2 project. But I have faced a problem that when I call and get asynchronus data from controller that would come after execution of my next statements.

//Jquery part------------

//this folowing method is not working properly for population SET_QualityTestCollection,
//but if i check it after execution(3-5 second delay) this mehod i am getting  data for   SET_QualityTestCollection
$(document).ready(function () {
    var collection = new GetCollectionYS_POTestItemForGrid(); 
});
var SET_QualityTestCollection = [];


function GetCollectionYS_POTestItemForGrid() {
    this.InsertUser = $("#ViewYS_POTestItem_YS_POTestItem_InsertUser").val() == null ? "" : $("#ViewYS_POTestItem_YS_POTestItem_InsertUser").val();
    this.Test = "<select id=\"ddlTest_" + YS_POTestItemCurrentID + "\" class = \"ddlQualityTest\"  önchange=\"TestRequirementsByTestId(" + YS_POTestItemCurrentID + ")\">" + SetCollectionForDdl() + "</select>";
    this.TestRequirment = "<select id=\"ddlRequirements_" + YS_POTestItemCurrentID + "\" class = \"ddlTestRequirements\"><option value='" + 0 + "' \selected=\"selected\">...Select Requirements...</option></select>";
    this.TestMethod = "<select id=\"ddlTstMethod_" + YS_POTestItemCurrentID + "\" class = \"ddlTestMethod\">" + SetCollectionForTestMethodDdl(GetTestMethod()) + "</select>";
    this.rownumber = YS_POTestItemCurrentID.toString();
    this.Tag = 1;
    this.Edit = "<a style="\"text-decoration:" mode="hold" />    this.Delete = "<a style="\"text-decoration:" mode="hold" />}
function SetCollectionForDdl() {
    var datacol = GetQualityTest();
    var s = '<option value="0" selected="selected">...Select...</option>';
    for (var i = 0; i < datacol.length; i++) {
        s += '<option value="' + datacol[i].id + '">' + datacol[i].TestName + '</option>';
    }
        return s;  
}

function GetQualityTest() {
    if (SET_QualityTestCollection.length == 0) {
      $.post("/YS_PO/GetQualityTest", { },
               function (data, textStatus) {
                   if (textStatus == "success") {
                       SET_QualityTestCollection = data;
                   }
               },"json");
        }
        return SET_QualityTestCollection;
}


//controller 
 public ActionResult GetQualityTest()
        {
            try
            {
               Bll.QualityTestListinfo qualityTestListinfo = new Bll.QualityTestListinfo();
               return Json(qualityTestListinfo.GetDatas(), JsonRequestBehavior.AllowGet);
        }

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