Hi I want to call a method based on one time span
here is my trail
protected void binddata(object sender, EventArgs e)
{
// my logic here
}
Now I want to call this method for every 5 mins
using c# and asp.net how can i achieve this?
thank you
you have a timer control in ASP.Net ajax controls.
http://msdn.microsoft.com/fr-fr/library/system.web.ui.timer.aspx
It provides a postbak
exemple from msdn:
<%# Page Language="C#" AutoEventWireup="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html >
<head runat="server">
<title>Timer Example Page</title>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
OriginalTime.Text = DateTime.Now.ToLongTimeString();
}
protected void Timer1_Tick(object sender, EventArgs e)
{
StockPrice.Text = GetStockPrice();
TimeOfPrice.Text = DateTime.Now.ToLongTimeString();
}
private string GetStockPrice()
{
double randomStockPrice = 50 + new Random().NextDouble();
return randomStockPrice.ToString("C");
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="10000" />
<asp:UpdatePanel ID="StockPricePanel" runat="server" UpdateMode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" />
</Triggers>
<ContentTemplate>
Stock price is <asp:Label id="StockPrice" runat="server"></asp:Label><BR />
as of <asp:Label id="TimeOfPrice" runat="server"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
<div>
Page originally created at <asp:Label ID="OriginalTime" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
Hope this help.
Using System.Threading.Timer - http://msdn.microsoft.com/en-us/library/system.threading.timer.aspx.
Timer myTimer = new Timer();
myTimer.Elapsed += new ElapsedEventHandler( binddata);
myTimer.Interval = 5*60*100;
myTimer.Start();
Related
I have the following code, in which I am trying to transfer some text in a previous page's textbox control (located in the master page) to the same master page textbox control. However it is not working. Please let me know if you can spot the error.
protected void Page_Load(object sender, EventArgs e)
{
if (PreviousPage != null)
{
TextBox placeholder =
(TextBox)PreviousPage.Master.FindControl("TextBox1");
if (placeholder != null)
{
TextBox searchBox = (TextBox)Master.FindControl("TextBox1");
string search = placeholder.Text.ToString();
searchBox.Text = search;
}
}
}
this is the .aspx of the master page:
<%# Master Language="C#" AutoEventWireup="true" CodeBehind="Site1.master.cs" Inherits="AlexBookShop.Site1" %>
<!DOCTYPE html>
<html>
<head runat="server">
<title></title>
<asp:ContentPlaceHolder ID="head" runat="server">
</asp:ContentPlaceHolder>
<style type="text/css">
.auto-style1 {
margin-bottom: 0px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server">
<asp:ListItem Value="1">Children</asp:ListItem>
<asp:ListItem Value="1">Finance</asp:ListItem>
<asp:ListItem Value="3">Non-Fiction</asp:ListItem>
<asp:ListItem Value="4">Technical</asp:ListItem>
</asp:DropDownList>
<asp:TextBox ID="TextBox1" runat="server" CssClass="auto-style1"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Search" OnClick="Button1_Click" />
<asp:Button ID="Button2" runat="server" Text="Log Out" OnClick="Button2_Click" />
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
</body>
</html>
For transferring data from one page to other page via MasterPAge you need to do cross page posting.
you need to assign the PostBackUrl property of a button control on the first page to point to the second one. like
<asp:Button ID="Button1" runat="server" Text="Button" PostBackUrl="~/Secondpage.aspx"/>
set the PreviousPage directive on the second page:
<%# PreviousPageType VirtualPath="~/firstpage.aspx" %>
Then whenever second page receives a postback, get the data you need from the first page:
protected void Page_Load(object sender, EventArgs e)
{
if (PreviousPage != null)
{
TextBox placeholder =
(TextBox)PreviousPage.Master.FindControl("TextBox1");
if (placeholder != null)
{
TextBox searchBox = (TextBox)Master.FindControl("TextBox1");
string search = placeholder.Text.ToString();
searchBox.Text = search;
}
}
}
Issue details:
After saving the data in DB, I need to show an alert to the user.
For this, I have registered the script from code-behind.
But it is NOT working with update-panel whereas it works as expected without update-panel.
I need to make it work with update-panel.
I tried by adding $(document).ready(function () while registering the script, but it didn't work.
Then, I tried with ScriptManager.RegisterClientScriptBlock() method instead of Page.ClientScript.RegisterStartupScript(), but it also didn't work.
Here is the code snippet of web page (ASPX):
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:Button ID="btnOutsideUpdatePanel" runat="server" Text="Outside UpdatePanel" OnClick="btnOutsideUpdatePanel_Click" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="btnInsideUpdatePanel" runat="server" Text="Inside UpdatePanel" OnClick="btnInsideUpdatePanel_Click" />
</ContentTemplate>
</asp:UpdatePanel>
<uc1:Child runat="server" id="Child1" />
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<uc1:Child runat="server" id="Child2" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
Here is the code snippet of user-control (ASCX):
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Child.ascx.cs" Inherits="UpdatePanelAndScript.Child" %>
<asp:Button ID="btnUserControl" runat="server" Text="User Control" OnClick="btnUserControl_Click" />
Code-behind of web-page:
protected void btnOutsideUpdatePanel_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "ShowSuccess", "alert('Hi');", true);
}
protected void btnInsideUpdatePanel_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "ShowSuccess", "alert('Hi');", true);
}
Code-behind of user-control:
protected void btnUserControl_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "ShowSuccess", "alert('Hi');", true);
}
You only need to change the following statement:
Page.ClientScript.RegisterStartupScript
(
this.GetType(),
"ShowSuccess",
"alert('Hi');",
true
);
To:
ScriptManager.RegisterStartupScript
(
this,
this.GetType(),
"ShowSuccess",
"alert('Hi');",
true
);
Reference:
MSDN ScriptManager Class
Registering Partial-Page Update Compatible Scripts
[...] If you are rendering script for use inside an UpdatePanel control, make sure that you call the methods of the ScriptManager control.
i have a div and an html editor and trying to:
add the div inner html to the
editor. (thats done)
then any changes done in the editor
is saved back in the div.
here is the backcode :
protected void Page_Load(object sender, EventArgs e)
{
Editor.Content = cvDiv.InnerHtml;
}
protected void preview(object sender, EventArgs e) //this is an onclick event
{
cvDiv.InnerHtml = Editor.Content;
}
and the code for the editor:
<asp:ScriptManager runat="server" />
<cc1:Editor ID="Editor" runat="server" OnContentChanged="preview" />
<asp:Button runat="server" ID="eButton" CssClass="eButton" Text="Edit" OnClick="Edit" />// this is the button that is supposed to save
but it doesnt work.
so what i am trying to do is save whatever changes made in the editor to the div
using asp.net 3.5, and the ajax toolkit editor.
thanks in advance.
This is an example i've made to show you a working code.
ASPX
<%# Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"></asp:ScriptManager>
<asp:TextBox id="editor" runat="server" AutoPostBack="true"></asp:TextBox>
<asp:Button ID="Save" runat="server" OnClick="SaveChange" Text="Save" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server" >
<ContentTemplate>
<div id="preview" runat="server"></div>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="editor" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
</form>
</body>
</html>
ASPX.CS
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack) editor.Text = preview.InnerHtml;
else preview.InnerHtml = editor.Text;
}
protected void SaveChange(object sender, EventArgs e)
{
string thingsToSave = preview.InnerHtml;
//Save to db/file/xml
}
}
Can you try using Literal control rather than a server side <div /> ?
I have a very simple AJAX example that doesn't work.
It is from the Microsoft tutorials on AJAX.
When I click on button "Button1" AJAX should execute but the whole page submits.
Here is the code:
<%# Page Language="C#" AutoEventWireup="true" CodeFile="1111.aspx.cs" Inherits="_1111" %>
<%# Register Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<p>
DropDownList AutoPostBack SelectedIndexChanged EventArgs Sort ... Since you will
be using AJAX to process your SelectedIndexChanged event, set the AutoPostBack property
of the DropDownList to false. ...</p>
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
</asp:ScriptManager>
<asp:Label ID="label2" runat="server"></asp:Label><br />
<asp:Label ID="label3" runat="server"></asp:Label><br />
<center>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="label1" runat="server"></asp:Label>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button 1" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</center>
</div>
</form>
</body>
</html>
Code-behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _1111 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
label1.Text = System.DateTime.Now.ToString();
label2.Text = System.DateTime.Now.ToString();
label3.Text = System.DateTime.Now.ToString();
}
protected void Button1_Click(object sender, EventArgs e)
{
label1.Text = System.DateTime.Now.ToString();
}
}
The code works for me.
The reason is possibly you are not configuring your web.config file properly. See what is inside your file.
It needs some components to support MS AJAX Extensions.
Go to
http://www.asp.net/ajax/videos/how-do-i-add-aspnet-ajax-features-to-an-existing-web-application.
Have a look at the tutorial to see if that helps.
I think your misunderstanding is in the Page_Load event, which will always fire, even for partial post-backs. You can handle that by making any initialization code conditional, as in:
if (!IsPostBack) {
label1.Text = System.DateTime.Now.ToString();
label2.Text = System.DateTime.Now.ToString();
label3.Text = System.DateTime.Now.ToString();
}
I wolud like to hide/unhide a TableRow through ASP.NET AJAX when a checkbox is clicked.
I have this code for the checkbox:
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<asp:CheckBox runat="server" ID="cbViewPages" Checked="true" OnCheckedChanged="OnViewPages" AutoPostBack="true"/>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="cbViewPages" EventName="CheckedChanged"/>
</Triggers>
</asp:UpdatePanel>
and this for the TableRow
<asp:TableRow runat="server" ID="PagesRow">
<asp:TableCell VerticalAlign="Middle">Test Row</asp:TableCell>
</asp:TableRow>
This method is called when the checkbox is clicked:
protected void OnViewPages(object sender, EventArgs e)
{
if(cbViewPages.Checked)
{
PagesRow.Visible = true;
}
else
{
PagesRow.Visible = false;
}
}
OnViewPages is definitely called, I can see that through the debugger.
And if I remove the AJAX code, OnViewPages is hidden/unhidden as required.
Why doesn't this hide/unhide functionality work with the AJAX code?
Doh!
I have a partial answer, the TableRow is not in the Update panel.
But you cant put an UpdatePanel around a TableRow.
So that's my new question, how do you put an UpdatePanel around a TableRow?
A couple of options. You could put the update panel around the entire table (this is what Petras is suggesting). You could also use JavaScript to do this. In the event that fires when your checkbox is checked/unchecked, just call
ScriptManager.RegisterStartupScript(Me, Me.GetType(), "setRowVisibility", "setRowVisibility(" & IIf(cbViewPages.Checked, "true", "false") & ");", True)
This will call a JavaScript function you can define on your page like this:
function setRowVisiblity(visible) {
var row = document.getElementById('<%=PagesRow.ClientID %>');
if (visible) {
row.style.display = 'table-row';
} else {
row.style.display = 'none';
}
}
This is MUCH more efficient than using and Update Panel, but it's a little more work. I prefer efficiency, but that's just me. :)
Here's the solution:
ASPX page
<%# Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="index" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="scriptMgr" runat="server" />
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<asp:CheckBox runat="server" ID="cbViewPages" Checked="true" OnCheckedChanged="OnViewPages" AutoPostBack="true"/>
<asp:Table runat="server">
<asp:TableRow>
<asp:TableCell>123</asp:TableCell>
</asp:TableRow>
<asp:TableRow runat="server" ID="PagesRow">
<asp:TableCell>Row To Hide</asp:TableCell>
</asp:TableRow>
</asp:Table>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="cbViewPages" EventName="CheckedChanged"/>
</Triggers>
</asp:UpdatePanel>
</form>
</body>
</html>
Code behind page:
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.IO;
public partial class index : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void OnViewPages(object sender, EventArgs e)
{
if(cbViewPages.Checked)
{
PagesRow.Visible = true;
}
else
{
PagesRow.Visible = false;
}
}
}