asp.net web forms json return result

Question

I use asp.net and web forms. In my project I have asmx web service

[WebMethod]
    public string GetSomething()
    {
      // avoid circual reference(parent child)
      List<RetUsers> res = repo.GetAllUser().Select(c => new RetUsers {User_ID = c.User_ID,User_Name = c.User_Name,Date_Expire = c.Date_Expire }).ToList();
      string res1 = res.ToJson();
      // extension methods
      return res.ToJson();
    }

And result is in this format.

[
    {"User_ID":1,"User_Name":"Test 1","Date_Expire":null},
    {"User_ID":2,"User_Name":"Test 2","Date_Expire":null}
]

How can I append to label this result in $.ajax sucess to get this output:

1 - Test 1, 2 - Test 2.

The web method should also be a class member (set by the static keyword in C#) — leojh, Jan 09 '13 at 23:50

Andrey · Accepted Answer · 2011-03-19T19:31:46.413

Return the list instead, and use [ScriptMethod(ResponseFormat = ResponseFormat.Json)] attribute - it will create JSON object as return automatically:

[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)] 
public List<RetUsers> GetSomething()
{
  // avoid circual reference(parent child)
  List<RetUsers> res = repo.GetAllUser().Select(c => new RetUsers {User_ID = c.User_ID,User_Name = c.User_Name,Date_Expire = c.Date_Expire }).ToList();

  return res;
}

And on JS side:

$.ajax(
{
    type: "POST",
async: true,
url: YourMethodUrl,
data: {some data},
contentType: "application/json; charset=utf-8",
dataType: "json",
    success: function(msg)
    {
        var resultAsJson = msg.d // your return result is JS array
        // Now you can loop over the array to get each object
        for(var i in resultAsJson)
        {
            var user = resultAsJson[i]
            var user_name = user.User_Name
            // Here you append that value to your label
        }
    }
})

How do you call this GetSomething URL in the first place, in a web-forms app? — WEFX, Nov 03 '11 at 15:42

score -1 · Answer 2 · edited Jul 30 '22 at 08:08

-1

public ActionResult MyAjaxRequest(string args)
{
  string error_message = string.Empty;
  try
  {
    // successful
    return Json(args);
  }
  catch (Exception e)
  {
    error_message = e.Message;
  }
}

what maybe the an error here

edited Jul 30 '22 at 08:08

Tyler2P

2,324
26
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31

answered Jul 27 '22 at 14:18

Sifundo Dubazana

1
2

asp.net web forms json return result

2 Answers2

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