Call asmx web service from browser

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Hi
I am working on a ASP.NET Web Forms application using .net framework 4.0

I want to use web services in my application which will
-> be accessible from a browser (by typing in the URL)
-> return JSON

In my web config file, I have already added

XML

<webServices>
  <protocols>
    <add name="HttpGet"/>
  </protocols>
</webServices>

Here is what my asmx service looks like

[WebMethod]
        [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
        public List<Department> BindDepartments(int faculty = 0, string university = "", string branch = "")
        {
            List<Department> departmentList = new List<Department>();
            DepartmentBL departmentBL = new DepartmentBL();

            try
            {
                

                JavaScriptSerializer js = new JavaScriptSerializer();
                Context.Response.Clear();
                Context.Response.ContentType = "application/text";
                Context.Response.Write(js.Serialize(departmentBL.getDepartmentsByFaculty(faculty, university, branch)));

            } 
            catch (Exception ex)
            {

            }
            finally
            {
                departmentBL = null;
            }


            return departmentList;
        }

Using this, when I call my service from the browser, it returns a mix of XML and JSON

[{"DepartmentId":2,"DepartmentName":"Computer Science","DepartmentShortName":"CS","FacultyId":3,"FacultyName":"Science","Status":false,"CreatedBy":0,"CreatedTime":"\/Date(1406194645653)\/","ModifiedBy":0,"ModifiedTime":"\/Date(-62135596800000)\/"}]<?xml version="1.0" encoding="utf-8"?>
<ArrayOfDepartment xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/" />

If I do not serialize and just return my C# List object, then I get pure XML data.

Please help me out here. What am I doing wrong?

Posted 25-Aug-14 14:38pm

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David Lee 145 · Answer 1 · 2014-08-25T18:55:00

You write json result to response and return list collection again.
How about trying like this?

C#

[WebMethod]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public string BindDepartments(int faculty = 0, string university = "", string branch = "")
{
    List<department> departmentList = new List<department>();
    DepartmentBL departmentBL = new DepartmentBL();

    try
    {
        

        JavaScriptSerializer js = new JavaScriptSerializer();
        Context.Response.Clear();
        Context.Response.ContentType = "application/json";
//json response
//        Context.Response.Write(js.Serialize(departmentBL.getDepartmentsByFaculty(faculty, university, branch)));

        return js.Serialize(departmentBL.getDepartmentsByFaculty(faculty, university, branch));

    } 
    catch (Exception ex)
    {

    }
    finally
    {
        departmentBL = null;
    }

//xml response
//return departmentList;

}
</department></department>