Father, Gamer and Application developer. So many hats so many opinions and thoughts.
Using jQuery, Ajax, and WebServices to provide interop between ASP Session and Client Side
Published on March 17, 2011 By Shalkto In Internet

So been a bit isnce i posted, have been working on a lot of legacy system stuff, so nothing interesting. However I am finally back to learning new technologies and thought i would make that the subject of this blog.

 

 

Code: asp.net
  1. Imports System.Web.Services
  2. Imports System.Web.Services.Protocols
  3. Imports System.ComponentModel
  4. Imports Oracle.DataAccess.Client
  5. ' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
  6. <System.Web.Script.Services.ScriptService()> _
  7. <System.Web.Services.WebService(Namespace:="http://canfor.ca/")>_
  8. <System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
  9. <ToolboxItem(False)> _
  10. Public Class session    
  11. Inherits System.Web.Services.WebService    
  12. ''' <summary>    
  13. ''' This sets the session variable for the application and user listed below.    
  14. ''' </summary>    
  15. ''' <param name="varValue">This is the value for the session variable</param>    
  16. ''' <param name="UserID">The Users UserID</param>    
  17. ''' <param name="appid">The application ID as listed in the APPLICATION Table</param>    
  18. ''' <param name="varName">What is the session variable name</param>    
  19. ''' <remarks></remarks>    
  20. <WebMethod()> _
  21.     Public Sub SetSessionVar(ByVal varValue As String, ByVal UserID As String, ByVal appid As Integer, ByVal varName As String)        
  22. Dim conn As New OracleConnection(ConfigurationManager.ConnectionStrings("WEB_APPS_DEV").ConnectionString)       Dim comm As New OracleCommand        
  23. Dim strSQL As String        
  24. strSQL = "PKG_SESSION_UTIL.SET_SESSION_VAR"
  25.         comm.CommandText = strSQL
  26.         comm.Connection = conn
  27.         comm.CommandType = CommandType.StoredProcedure
  28.         comm.Parameters.Add(New OracleParameter("p_userid", UserID))
  29.         comm.Parameters.Add(New OracleParameter("p_applid", appid))
  30.         comm.Parameters.Add(New OracleParameter("p_sessionvar", varName))
  31.         comm.Parameters.Add(New OracleParameter("p_varvalue", varValue))
  32.         conn.Open()
  33.         comm.ExecuteNonQuery()
  34.         conn.Close()
  35.     End Sub
  36. End Class

 

Code: sql
  1. CREATE OR REPLACE PACKAGE PKG_SESSION_UTIL AS
  2.    PROCEDURE SET_SESSION_VAR (p_userid       IN VARCHAR2
  3.                              ,p_applid       IN NUMBER
  4.                              ,p_sessionvar      VARCHAR2
  5.                              ,p_varvalue        VARCHAR2);
  6. END PKG_SESSION_UTIL;
  7. CREATE OR REPLACE PACKAGE BODY PKG_SESSION_UTIL
  8. AS
  9.    PROCEDURE SET_SESSION_VAR (p_userid       IN VARCHAR2
  10.                              ,p_applid       IN NUMBER
  11.                              ,p_sessionvar      VARCHAR2
  12.                              ,p_varvalue        VARCHAR2)   AS
  13.       TYPE aarr_session IS TABLE OF WEB_SESSION%ROWTYPE;
  14.       v_session   aarr_session;
  15.    BEGIN
  16.       SELECT *
  17.         BULK COLLECT INTO v_session
  18.         FROM WEB_SESSION
  19.        WHERE USERID = p_userid AND applid = p_applid AND sessionvar = p_sessionvar;
  20.       IF v_session.COUNT > 0
  21.       THEN
  22.          UPDATE WEB_SESSION
  23.             SET varvalue = p_varvalue
  24.           WHERE USERID = p_userid AND applid = p_applid AND sessionvar = p_sessionvar;
  25.       ELSE
  26.          INSERT INTO WEB_SESSION (userid
  27.                                  ,applid
  28.                                  ,sessionvar
  29.                                  ,varvalue)
  30.               VALUES (p_userid
  31.                      ,p_applid
  32.                      ,p_sessionvar
  33.                      ,p_varvalue);
  34.       END IF;
  35.    END;
  36. END;

 

Code: html
  1. <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WoodlandsList.aspx.vb" Inherits="WIM.WoodlandsWebApps.WoodlandsList" %>
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  3. <html xmlns="http://www.w3.org/1999/xhtml">
  4. <head runat="server">
  5.     <title></title>
  6.     <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.5.js" type="text/javascript"></script>
  7.     <%If False Then%>
  8.         <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.5-vsdoc.js" type="text/javascript"></script>
  9.     <%End If%>
  10.     <script type="text/javascript">
  11.         function doStuff() {
  12.             $('#OpName').slideUp(1000, function () {
  13.                 $('#drpOperations').fadeIn(1000);
  14.             });
  15.         }
  16.         $(document).ready(function () {
  17.             $('#OpName').text($('#drpOperations option:selected').text());
  18.             $('#drpOperations').hide();
  19.             $('#drpOperations').change(function () {
  20.                 var newVal = $('#drpOperations option:selected').text();
  21.                 var ajaxData = "{ 'varValue' : '" + newVal + "' , ";
  22.                 ajaxData += "'UserID' : '" + $('#hdnUser').val() + "' ,";
  23.                 ajaxData += "'appid' : '" + $('#hdnAppId').val() + "' ,";
  24.                 ajaxData += "'varName' : 'WebOperId' }";
  25.                 $.ajax({ 
  26.                    type: "POST",
  27.                     url: "/Services/session.asmx/SetSessionVar",
  28.                     data: ajaxData ,
  29.                     contentType: "application/json; charset=utf-8",
  30.                     dataType: "json"
  31.                 });
  32.                 $('#drpOperations').slideUp(1000, function () {
  33.                     $('#OpName').text(newVal);
  34.                     $('#OpName').fadeIn(1000);
  35.                 });
  36.             });
  37.         });
  38.     </script>
  39.     <style type="text/css">
  40.         #OpName
  41.         {
  42.             font-weight:bold;
  43.             color:Maroon;
  44.         }
  45.         .OpBreadCrumb
  46.         {
  47.             float:right;
  48.             font-family:Arial;
  49.             font-size:11pt;
  50.             border:1px solid red;
  51.             vertical-align:middle;
  52.             padding-top:10px;
  53.             margin:0px;
  54.         }
  55.     </style>
  56.     </head>
  57. <body>
  58.     <form id="form1" runat="server">
  59.     <div class="OpBreadCrumb">
  60.     <asp:HiddenField ID="hdnUser" runat="server" />
  61.     <asp:HiddenField ID="hdnAppId" runat="server" />
  62.         Current Operation <span id="OpName" onclick="javascript:doStuff()">Prince George</span>
  63.     <asp:DropDownList runat="server" ID="drpOperations">    </asp:DropDownList>
  64.     </div>
  65.     <asp:Button ID="poster" runat="server" Text="PostBack" />
  66.     <asp:Label ID="lblMessage" runat="server"></asp:Label>
  67.     </form>
  68. </body>
  69. </html>

 

Code: asp.net
  1. Imports Oracle.DataAccess.ClientPublic
  2. Class WoodlandsList
  3.     Inherits System.Web.UI.Page
  4.     Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
  5.         If Not IsPostBack Then
  6.             Dim dsOps As DataSet = CType(Cache.Get("HIPRDS_OPS"), DataSet)
  7.             Dim strSql As String
  8.             If dsOps Is Nothing Then
  9.                 strSql = " SELECT OPER_NAME, opap.APP_OPER_CODE "
  10.                 strSql &= "  FROM OPERATION op INNER JOIN OPERATION_APPL opap ON OP.OPER_ID = OPAP.OPER_ID "
  11.                 strSql &= " WHERE OPAP.APP_ID = 141 "
  12.                 Dim conn As New OracleConnection( _ ConfigurationManager.ConnectionStrings("WEB_APPS_DEV").ConnectionString)
  13.                 Dim adap As New OracleDataAdapter(strSql, conn)
  14.                 dsOps = New DataSet()                adap.Fill(dsOps)
  15.                 drpOperations.DataSource = dsOps
  16.                 drpOperations.DataTextField = "OPER_NAME"
  17.                 drpOperations.DataValueField = "APP_OPER_CODE"
  18.                 drpOperations.DataBind()
  19.                 Cache.Insert("HIPRDS_OPS", dsOps)
  20.             Else
  21.                 drpOperations.DataSource = dsOps
  22.                 drpOperations.DataTextField = "OPER_NAME"
  23.                 drpOperations.DataValueField = "APP_OPER_CODE"
  24.                 drpOperations.DataBind()
  25.             End If
  26.         End If
  27.         hdnUser.Value = Context.User.Identity.Name.Split("\")(1)        hdnAppId.Value = 141    End Sub
  28. End Class

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