Question

I m using ajax autocomplete which calls a web service to search name and code(name & code are fields of my datatable)

It works fine

this is my webmothod of webservice

   [WebMethod]
        public string[] GetSupplier(string prefixText)
        {
            con.Open();
            //int count = 10;
            string sql = "Select * from SupplierMaster where name like @prefixText  ";
            SqlDataAdapter da = new SqlDataAdapter(sql, con);
            da.SelectCommand.Parameters.Add("@prefixText", SqlDbType.VarChar, 500).Value = prefixText + "%";
            DataTable dt = new DataTable();
            da.Fill(dt);
            string[] List = new string[100];
            int i = 0;

            foreach (DataRow dr in dt.Rows)
            {
                List.SetValue(dr["name"].ToString(), i);
                i++;
            }

         string sql1 = "Select * from SupplierMaster where codelike @prefixText  ";
            SqlDataAdapter da1 = new SqlDataAdapter(sql1, con);
            da1.SelectCommand.Parameters.Add("@prefixText", SqlDbType.VarChar, 500).Value = prefixText + "%";
            DataTable dt = new DataTable();
            da1.Fill(dt);
            string[] List = new string[100];
            int i = 0;
            foreach (DataRow dr in dt.Rows)
            {
                List.SetValue(dr["name"].ToString(), i);
                i++;
            }
            con.Close();
            return List;

        }

and this is autocomplete extender in .aspx file

  <asp:AutoCompleteExtender runat="server" ID="AutoCompleteExtender3" TargetControlID="txtsear" ServicePath="~/Search.asmx" ServiceMethod="GetSupplier"

 MinimumPrefixLength="1" CompletionSetCount="10" 
CompletionListCssClass="autocomplete_completionListElement"
 CompletionListItemCssClass="autocomplete_listItem" 
                                                                    CompletionListHighlightedItemCssClass="autocomplete_highlightedListItem"
 </asp:AutoCompleteExtender>

Answer 1

I got the answer,

  [WebMethod]
        public string[] GetSupplier(string prefixText)
        {
            con.Open();
            //int count = 10;
            string sql = "Select * from SupplierMaster where name like @prefixText";
            SqlDataAdapter da = new SqlDataAdapter(sql, con);
            da.SelectCommand.Parameters.Add("@prefixText", SqlDbType.VarChar, 500).Value = prefixText + "%";
            DataTable dt = new DataTable();
            da.Fill(dt);
            string[] List = new string[100];
            int i = 0;
            foreach (DataRow dr in dt.Rows)
            {
                List.SetValue(dr["name"].ToString(), i);
                i++;
            }

            string sql1 = "Select * from SupplierMaster where code like @prefixText";
            SqlDataAdapter da1 = new SqlDataAdapter(sql1, con);
            da1.SelectCommand.Parameters.Add("@prefixText", SqlDbType.VarChar, 500).Value = prefixText + "%";
            DataTable dt1 = new DataTable();
            da1.Fill(dt1);
            //string[] List = new string[dt.Rows.Count];
            //int i = 0;
            foreach (DataRow dr in dt1.Rows)
            {
                List.SetValue(dr["code"].ToString(), i);
                i++;
            }
            con.Close();
            return List;

        }