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PORetrieve Sql Data Using WebMethod & Jquery
 

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  1. PORetrieve Sql Data Using WebMethod & Jquery
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    <p>I wants to retrieve data from sql server using webserver/jquery and I read many articles but not getting the require matters except below but I think It's support FrameWork .Net 3.5 not 2.0. And I have the same requirement to use it in ASP.Net 2.0.</p> <pre><code>//On WebServer Page.. WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [ScriptService] public class test : System.Web.Services.WebService { [WebMethod] public string GetCustomer(string memberID) { string response = "&lt;p&gt;No customer selected&lt;/p&gt;"; string connect = "Server=myserver;Initial Catalog=mydatabase;uid=myuser;pwd=mypassword"; string query = "SELECT name, father, mother from samaj where name=@memberID"; if (memberID != null) { StringBuilder sb = new StringBuilder(); using (SqlConnection conn = new SqlConnection(connect)) { using (SqlCommand cmd = new SqlCommand(query, conn)) { cmd.Parameters.AddWithValue("memberID", memberID); conn.Open(); SqlDataReader rdr = cmd.ExecuteReader(); if (rdr.HasRows) { while (rdr.Read()) { sb.Append("&lt;p&gt;"); sb.Append("&lt;strong&gt;" + rdr["name"].ToString() + "&lt;/strong&gt;&lt;br /&gt;"); sb.Append(rdr["father"].ToString() + "&lt;br /&gt;"); sb.Append(rdr["mother"].ToString() + "&lt;br /&gt;"); response = sb.ToString(); } } } } } return response; } } } //.aspx page... &lt;script type="text/javascript" src="jquery-1.3.2.min.js" &gt;&lt;/script&gt; &lt;script type="text/javascript" &gt; $(document).ready(function(){ $("#Customers").change(function() { $.ajax ({ type: "POST", contentType: "application/json; charset=utf-8", url: "test.asmx/GetCustomer", data: "{ memberID: '" + $('#Customers').val() + "'}", dataType: "json", success: function(data) { $("#CustomerDetails").html(data.d); } }); }); }); &lt;/script&gt; &lt;form id="form1" runat="server"&gt; &lt;div id="SelectCustomers"&gt; &lt;asp:DropDownList ID="Customers" runat="server"&gt; &lt;/asp:DropDownList&gt; &lt;/div&gt; &lt;div id="CustomerDetails"&gt; &lt;/div&gt; &lt;/form&gt; The DropdownList Binding In Default.aspx.cs page... protected void Page_Load(object sender, EventArgs e) { string connect = "Server=myserver;Initial Catalog=mydatabse;uid=myuser;pwd=mypwd string query = "SELECT name FROM samaj"; using (SqlConnection conn = new SqlConnection(connect)) { using (SqlCommand cmd = new SqlCommand(query, conn)) { conn.Open(); Customers.DataSource = cmd.ExecuteReader(); Customers.DataValueField = "name"; Customers.DataBind(); } } </code></pre> <p>.asmx page testing ok It’s retrieves the data well but on client side It’s not return any data. How to achieve it in ASP.Net 2.0?.</p>
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    1. USmarc_s
    1. USuser2955849
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    1. This table or related slice is empty.
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    1. COLooks about right... maybe a slight syntax error somewhere. If you debug the app, when you change the item in the #Customers dropdown does any network activity happen? Does it even call the Web Method at all?
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      1. PORetrieve Sql Data Using WebMethod & Jquery
      1. USBen
    2. CO@Ben, no network activity nor Web Method Call?. I didn't saw any activity happen on network.
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      1. PORetrieve Sql Data Using WebMethod & Jquery
      1. USuser2955849
    3. COIn that case there must be a problem with the script - A few things to check: jQuery is loaded, #Customers id is set as expected - if not you need to use $('#<%= Customers.ClientID %>').change(...
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      1. PORetrieve Sql Data Using WebMethod & Jquery
      1. USBen
 

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