AJAX :: Autocomplete Asmx Detect A Session Variable?
Dec 30, 2010I am attempting to pass a session var(dropdownlist choice) to my autocomplete.asmx to incorporate it into my sql select statement. Is this do-able?
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Jan 28, 2011I'm wondering if it's possible to perhaps set something up in the global.asx file or something that will build a list of all currently active user sessions that I can then use to display to a logged in user, who else is currently logged in.
Currently I store my userId's in a session variable Session["IsLoggedIn"], so basically i want to build an global array of some sort that will store all these active userId's.
Let me know if this is possible, or who i would go about accomplishing this sort of thing. BTW, I'm not using asp.net's built in membership thing for login accounts.
AJAX :: Cascading Dropdownlists / Tried A Session Variable But It Comes Up With Session Is Null?
Jul 29, 2010I have some cascading dropdownlists using the ajax toolkit I have a set up datatables in an xsd file. Then use these in a webservice to populate all the fields ... this all works great but now i need to pass an additional paramter to the first dropdownlist ( a date) but don't know how to do this? The method is below...
[Code]....
The other code is:
[Code]....
The first change would be to the tableadapter to add a param to the code i.e
AuditWebDS.TeamsDataTable teams = teamsAdapter.GetTeams(calldate);
but how do i get the calldate param to the webservice method... i tried a session variable but it comes up with session is null ? Is there another better way?
AJAX :: Pass Session Value As Parameter To AutoComplete Extender Control
May 23, 2013I followed below article [URL] .....
But I want to pass the value which i stored in my "int ID" instead of dropdown selected, I am getting this error "Newline in constant"
function SetContextKey()
{
$find('<%=AutoCompleteExtender1.ClientID>%').set_contextKey($get("<%=ID.ClientID %>").value);
}
How To Store A Value Into A Session Variable And Load From That Value Back From The Session Variable
Nov 22, 2010Currently in an .aspx file, I am storing a value (filename that was created in that session) in an hidden text box. When the user clicks on the "Print" labeled Hyperlink control, it opens the file that was stored in the hidden text box control. But when the user goes to different screen (in the same session), I loose the filename value that is stored in the hidden text box control. So I would like to store the filename variable in a session variable. So that if the user leaves this .aspx file and comes back to this .aspx file I can load the value into the hidden text box from the session variable.
View 11 RepliesAJAX :: Creating Simple Autocomplete / Taking One Textbox Adding Autocomplete Extender?
Sep 29, 2010I'm creating just simple autocomplete sample.
taking one textbox adding autocomplete extender as
<asp:ScriptManager ID="ScriptManager2" runat="server">
<Services>
<asp:ServiceReference Path="WebService.asmx" />
</Services>
</asp:ScriptManager>
<asp:TextBox ID="TextBox1" runat="server" EnableTheming="True" ></asp:TextBox>
<cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" MinimumPrefixLength="1" ServiceMethod="GetCountryInfo" ServicePath="WebService.asmx" TargetControlID="TextBox1">
</cc1:AutoCompleteExtender>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
Also creating web services as "WebService.asmx" & code inside this file is that
<%@ WebService Language="C#" CodeBehind="~/App_Code/WebService.cs" %>
------
then in Webservice.cs file i write code as
public class WebService : System.Web.Services.WebService {
MySql.Data.MySqlClient.MySqlCommand cmd = new MySqlCommand();
MySql.Data.MySqlClient.MySqlConnection con = new MySqlConnection();
//MySqlDataAdapter da = new MySqlDataAdapter();
MySqlDataReader dr;
public WebService () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public string[] GetCountryInfo(string prefixText)
{
int count = 10;
string sql = "Select * from tbl_patientmaster Where P_NAME like '" + @prefixText + "%'";
con.ConnectionString = System.Configuration.ConfigurationManager.AppSettings["HMSDBConnectionString"].ToString();
con.Open();
MySql.Data.MySqlClient.MySqlDataAdapter da = new MySql.Data.MySqlClient.MySqlDataAdapter(sql, con);
da.SelectCommand.Parameters.Add("@prefixText", MySql.Data.MySqlClient.MySqlDbType.VarChar, 50).Value = prefixText + "%";
System.Data.DataTable dt = new System.Data.DataTable();
da.Fill(dt);
string[] items = new string[dt.Rows.Count];
int i = 0;
foreach (System.Data.DataRow dr in dt.Rows)
{
items.SetValue(dr["P_NAME"].ToString(), i);
i++;
}
return items;
}
this code is not working
Setting A Session Variable In Global.asax Causes AJAX Errors
Mar 26, 2010I'm getting a very peculiar problem with my asp.net application, it took me an age to track down but I still don't know what is causing this behaviour.
If I set a session variable in the Application_PreRequestHandlerExecute event, then my external JavaScript files are ignored, and therfore causing a raft of errors. I have simplified the problem below.
E.g.
I have file called JScript.js containing the code:
function myAlert() {
alert("Hi World");
}
And in my Default.aspx file I reference the js with the code:
<script src="JScript.js" type="text/javascript"></script>
And in the body onload event I call the myAlert() function:
<body onload="myAlert()">
And finally in the Global.asax file:
Private Sub Application_PreRequestHandlerExecute(ByVal sender As Object, ByVal e As EventArgs)
HttpContext.Current.Session("myVar") = "MyValue"
End Sub
If you run the Default.aspx file you will see the js function isnt called, however, if you comment out the line of code Global.asax then the external js is called and the function executed when the page loads.
WCF / ASMX :: Passing Variable From Dropdownlist.selectedvalue To Asmx Webservice
Nov 10, 2010On my page I have a dropdown for country.
On my asmx service I want to get the value of the dropdownlist to filter the next input which will be state/providence.
My code on the asmx:
[Code]....
I want to add another clause to the WHERE statement to restrict Country = @Country so I will need to get that value to the web service.
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State Management :: Public Variable Vs Session Variable To Store Logged In UserID
May 17, 2010I have a web application which uses a session variable to store the logged in userid. If no user is logged in, of course this variable will be empty and the contents displayed on my website are meant for guests. If there is a user logged in, the user specific controls/access/links will then be a displayed.
I am now having issues with my hosting where on shared application pool, the worker recycle is triggered every 90 minutes, this will clear sessions causing all my users to be logged out. I opted for a dedicated application pool, which got worse because I am only allocated 50MB memory limit and if this is reached, the worker recycle is triggered and I lose my sessions again. I have tried as much as possible optimization techniques, e.g. dispose where possible, close connections, disable viewstate for static controls etc but my memory per instance keeps building up from page to page without any signs of improvement. I don't use loops nor store huge objects like bitmaps etc but my sessions are now gone even faster than 90 minutes in shared application pool before.
I have considered using SQL Session State but there isn't a simple guide on using this with MySQL. I am getting desperate and considering using a public variable, a string as a replacement to store logged in user id instead of in a session variable. I am pretty sure this will solve my issue with sessions being recycled but are there any negative consequences of doing this? One problem I can think of is if the user closes the browser, the system will never know that the user is now logged out and this public variable should be nothing. In this scenario, will the GC eventually clear this abandoned public variable.
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Dec 2, 2010What would be the proper syntax in ASP.NEt 3.5 C# to assign a TextBox value to a temporary or session variable to be manipulated (added, subtracted, multiplied, divided) at different points in the application? I want to add a decimal number to this variable in almost every instance as well.
View 3 RepliesWCF / ASMX :: AutoComplete Extender Not Calling Web Service
Mar 24, 2011I am using AutoComplete ASP.NET AJAX Control toolkit AutoCompleteExtender control When I am using my web service as Service Path, its not working.my web services code below
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Data.SqlClient;
using System.Data;
using System.Web.Script.Services;
namespace OnlineSalesGrid
{
/// <summary>
/// Summary description for sample
/// </summary>
[WebService(Namespace = [URL]]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class sample : System.Web.Services.WebService
{
[WebMethod]
public static string[] GetCompletionList(string prefixText, int count)
{
List<string> returnData = new List<string>();
SqlConnection con = new SqlConnection("Data Source=CARPATHIA\SQLEXPRESS;Initial Catalog=OnlinesaleGrid;Persist Security Info=True;User ID=sa;Password=c0rpusdata");
string sql = "select Customer_Name from Customer_Master where Customer_Name like '%" + prefixText + "%'";
SqlCommand cmd = new SqlCommand(sql, con);
con.Open();
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
while (reader.Read()) { returnData.Add(reader["Customer_Name"].ToString()); }
return returnData.ToArray();
}
[WebMethod]
public static string[] GetCompletionList1(string prefixText, int count)
{
List<string> returnData = new List<string>();
SqlConnection con = new SqlConnection("Data Source=CARPATHIA\SQLEXPRESS;Initial Catalog=OnlinesaleGrid;Persist Security Info=True;User ID=sa;Password=c0rpusdata");
string sql = "select Customer_Code,Customer_Name from Customer_Master where Customer_Code like '%" + prefixText + "%'";
SqlCommand cmd = new SqlCommand(sql, con);
con.Open();
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
while (reader.Read())
{
returnData.Add(reader["Customer_Code"].ToString());
}
return returnData.ToArray();
}
}
}
Html Code is
<asp:ScriptManager ID="toolscpt1" runat="server" >
<Services>
<asp:ServiceReference Path="~/sample.asmx" />
</Services>
</asp:ScriptManager>
<asp:TextBox
ID="txtcname" runat="server" CssClass="textbox" onBlur='funblurcolor(this.id)' onFocus='funfocuscolor(this.id)'
ontextchanged="txtcname_TextChanged1" onkeypress="javascript:if(window.event.keyCode == 13) document.getElementById('txtphno').focus" ></asp:TextBox>
<asp:AutoCompleteExtender ID="txtname_AutoCompleteExtender"
runat="server" Enabled="True" ServiceMethod ="GetCompletionList" ServicePath="~/sample.asmx"
MinimumPrefixLength="1" CompletionSetCount ="12" EnableCaching ="true" CompletionInterval ="500"
TargetControlID="txtcname" ></asp:AutoCompleteExtender>
Trying To Detect Session State Timeout?
Apr 13, 2010I am trying to detect a session state timeout in my asp.net application and am unable to do so. I have a base class that derives from System.Web.UI.Page as follows:-
public class BasePageSessionExpire : Page
{
override protected void OnInit(EventArgs e)
{
base.OnInit(e);
if (Context.Session != null)
{
if (Session.IsNewSession)
{
string szCookieHeader = Request.Headers["Cookie"];
if ((null != szCookieHeader) && (szCookieHeader.IndexOf("ASP.NET_SessionId") > 0))
{
Session.Abandon();
Response.Redirect("~/SessionExpired.aspx",true);
}
}
}
}
}
All the pages I need session state checking on derive from this base class instead of "System.Web.UI.Page". Also, all these pages have EnableSessionState="True". I have a blank Session_Start() method in my global.asax file if that is relevant at all.
For some reason after the first request, the "Session.IsNewSession" property is always false. It is true only for the first request and then is always false. I have my timeout set to 1 minute. The session never seems to timeout. What am I missing here ?
Also I have implemented a state server in SQL Server 2008. This is not an in-proc session state implementation.
Detect If Session Expired Using Javascript?
Jul 22, 2010I am creating a web application using ASP.Net. I am using session in my application.
There is one scenario where I am trying to access session variable through Javascript. It is working fine, when I m accessing it in normal state. But after session expiry, if click on any button, it throws exception and behaves abnormally, resulting in page not found.
Here is the code I am using;
var TransactionID = '<% =((Hashtable)(Session["SessionData"]))["TransactionID "] %>';
if(TransactionID !='')
{
//action
}
I am trying to achieve something like of sort in c#;
String lsStr;
if(null != lsStr)
{
//action
}
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View 1 RepliesWhich Is The Best Usage Session Variable Or Global Variable
May 25, 2010I have the dataset. in this i am having total 20 tables with huge amount of data..I want use this data over all the page..so where i can keep this data..
before i used viewstate but the viewstate data is render to page every postback ..so this time the page size is increasing(interanlly viewstate is rendered to page)..so performence wise it was very slow..
Now i change my logic insted of viewstate to i used Globel Dataset on Page Level.. now the performence wise better than viewstate..
i used Like shared dsControls as Dataset at top of the page..so every time i use this dataset..
my quesation is session is better or Globel variable is better way use in my situavation..
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Sep 14, 2010I added the following code to global.asax to load up several session variable when a session starts. I'm assuming that when a page goes to use the variable that I should be
1) checking at the page level that the value is valid not 0 when its not expected to be 0, not a zero-length string when its expected to have a length
2) have code at the page level that sets the values if the values have not been set as when the Session timeout, ideally putting the code in a class derived from Page and then deriving all of my pages from the new class so that the code does not have to be repeated in every page
[Code]....
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In Global Page:
[code]....
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I do not use Linq, and there is only one place in the whole web app that I place the connection string in a variable whcih is when a person logs in. It points them to the correct database. The sqlconnection is set for all of my listviews in Page_Init to make sure that they aren't using any session variable that they create on their own. Interestingly enough that if I use debug to go in each time, exit debug, enter debug again trying to access a different database, it works correct each time. I assume that debug is correctly killing the session variable for the classes for me.
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Public Function GetShoppingCartId() As [String]
If Session(CartId) Is Nothing Then
Session(CartId) = If(System.Web.HttpContext.Current.Request.IsAuthenticated, User.Identity.Name, Guid.NewGuid().ToString())
End If
Return Session(CartId).ToString()
End Function
For Session in Session(CartId) I'm etting the following error: 'Session' is not declared. It may be inaccessible due to its protection level. For User in User.Identity.Name I'm getting the same error: 'User' is not declared. It may be inaccessible due to its protection level