How to getting Data through web Services with jquery in asp.net c#.

In Html

<div id="div_id"></div>

In Jquery code  JqueryDatabind.js

$.fn.DataBind = function () {    
    var data = "{}";
    var url = "Testing.aspx/get_data";

    $(this).AjaxPOST(url, data, function (d) {
        if (typeof (d[0]) !== 'undefined') {
                $('#div_id').append(d[0].id.toString());
        }
    });
}

In Web Services Code

 public class DataId

 {

     public string id;

 }

[WebMethod]

public List<DataId> get_data()

{

  List<DataId> dataid= new List<DataId>();

  string query = "";

  try

  {

    // pass your Sql  connectionstring  Web.config

   SqlConnection con = new SqlConnection(Pass Your         ConnectionString );

   con.Open();

   query = "select dataid From YourTableName";

   SqlDataAdapter da = new SqlDataAdapter(query, con);

   DataSet ds = new DataSet();

   da.Fill(ds);

   

if(ds.Tables[0].Rows.Count>0)

   {

       DataListId data_list = new DataListId();

       data_list.id= ds.Tables[0].Rows[0]["dataid"].ToString();

       dataid.Add(data_list);

   }

   con.Close();

 }

 catch (Exception ex)

 {

 }

 return dataid;

}