|
If updatepanel is used only for filling the dropdowns without page refresh, why don't you try Cascading Dropdown[^]?
|
|
|
|
|
We can add update panels dynamically. Please refer the following code sample(working):
Note: This is a Sample code
Aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DynamicUpdatePanel.aspx.cs" Inherits="DynamicUpdatePanel" %>
<!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>Dynamic Update Panel</title>
</head>
<body>
<form id="frmDynamicUpdatePanel" runat="server">
<asp:ScriptManager ID="pageScriptManager" runat="server"></asp:ScriptManager>
<asp:Panel ID="panelControls" runat="server">
</asp:Panel>
</form>
</body>
</html>
.CS
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class DynamicUpdatePanel : System.Web.UI.Page
{
DataTable dtCountry;
DataTable dtState;
protected void Page_Load(object sender, EventArgs e)
{
PopulateData();
CreateControls();
}
protected void CreateControls()
{
UpdatePanel updatePanel = new UpdatePanel();
DropDownList ddlCountry = new DropDownList();
ddlCountry.ID = "ddlCountry";
ddlCountry.Items.Add(new ListItem("-Select-", "-1"));
ddlCountry.DataSource = dtCountry;
ddlCountry.DataValueField = "CountryID";
ddlCountry.DataTextField = "CountryName";
ddlCountry.DataBind();
ddlCountry.SelectedIndexChanged += ddlCountry_SelectedIndexChanged;
ddlCountry.Items.Insert(0, new ListItem("-Select-", "-1"));
ddlCountry.AutoPostBack = true;
DropDownList ddlState = new DropDownList();
ddlState.ID = "ddlState";
ddlState.Items.Insert(0, new ListItem("-Select-", "-1"));
updatePanel.ContentTemplateContainer.Controls.AddAt(0, ddlCountry);
updatePanel.ContentTemplateContainer.Controls.AddAt(1, ddlState);
panelControls.Controls.Add(updatePanel);
}
protected void PopulateData()
{
dtCountry = new DataTable();
DataColumn dc;
dc = new DataColumn("CountryID");
dtCountry.Columns.Add(dc);
dc = new DataColumn("CountryName");
dtCountry.Columns.Add(dc);
dtState = new DataTable();
dc = new DataColumn("CountryID");
dtState.Columns.Add(dc);
dc = new DataColumn("StateID");
dtState.Columns.Add(dc);
dc = new DataColumn("StateName");
dtState.Columns.Add(dc);
DataRow dr;
dr = dtCountry.NewRow();
dr["CountryID"] = "1";
dr["CountryName"] = "India";
dtCountry.Rows.Add(dr);
dr = dtCountry.NewRow();
dr["CountryID"] = "2";
dr["CountryName"] = "USA";
dtCountry.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "1";
dr["StateID"] = "1";
dr["StateName"] = "Delhi";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "1";
dr["StateID"] = "2";
dr["StateName"] = "UP";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "1";
dr["StateID"] = "3";
dr["StateName"] = "AP";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "1";
dr["StateID"] = "4";
dr["StateName"] = "MP";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "1";
dr["StateID"] = "5";
dr["StateName"] = "Orissa";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "2";
dr["StateID"] = "6";
dr["StateName"] = "Alabama";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "2";
dr["StateID"] = "7";
dr["StateName"] = "Alaska";
dtState.Rows.Add(dr);
dr = dtState.NewRow();
dr["CountryID"] = "2";
dr["StateID"] = "8";
dr["StateName"] = "Arizona";
dtState.Rows.Add(dr);
}
protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e)
{
DropDownList ddlCountry = (DropDownList)sender;
DropDownList ddlState = (DropDownList)panelControls.FindControl("ddlState");
ddlState.Items.Clear();
ddlState.Items.Add(new ListItem("-Select-", "-1"));
if(ddlCountry.SelectedValue != "-1")
{
DataRow[] drCollection;
drCollection = dtState.Select("CountryID = " + ddlCountry.SelectedValue);
foreach (DataRow dr in drCollection)
{
ddlState.Items.Add(new ListItem(dr["StateName"].ToString(), dr["StateID"].ToString()));
}
}
}
}
Please revert back on any doubts.
Thanks,
Rajdev KR
|
|
|
|
|
Sorry for the late reply.
Thank you Rajdev. Code Works perfectly fine. Thanks a lot!!!
Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.
|
|
|
|
|
Hi,
I am sending message to multiple user. I am using forloop and using this for loop it takes the numbers one by one from the textfile and send the sms.
but it takes to much time for 10 numbers at a time.
Is it possible with Multithread or Webservices ? Or any other solution.
Thanks
sjs
|
|
|
|
|
How you are sending SMS
Are you using a SMS Gateway
OR
Sending SMS from mobile using symbian API's
|
|
|
|
|
|
Then you need to check out with Gateway Documentation, whether they allow comma separated list in to field
|
|
|
|
|
Yes. Gateway supports comma Separate list
|
|
|
|
|
So then send it comma separated list 
|
|
|
|
|
then, where is the problem, send the comma separated list 
|
|
|
|
|
Hi All,
I am creating a custom server control for multiselection drop down list. This control contains AspxEditButton, check box list and panel. AspxEditButton and check box list are placed in that panel. I have to display selected items from check box list to AspxEditButton at the time of MouseOut from panel. Can I use code as follows at WebControl1.cs,
_panel.Attributes.Add("onmouseout", "Javascript:CtrlLeave(); ");
And can I write CtrlLeave() javascript function at WebControl1.cs How can I write a javascript function at WebControl1.cs?
Regards,
Anu
|
|
|
|
|
AnuMaria wrote: And can I write CtrlLeave() javascript function at WebControl1.cs How can I write a javascript function at WebControl1.cs?
Just render the JS function along with the control. A better way would be to use embedded resources. I have explained it here[^]. Please take a look at that.
|
|
|
|
|
hi all,
My application is on one drive and i want to locate another file or use a file from another drive.How can i do this.i am using asp.net and c#.
Thanks in advance...
|
|
|
|
|
You can't. ASP.NET will have access only in the website area. It can't access files from some other drive.
|
|
|
|
|
Hi everebody,
After we applied the security update that is described in security bulletin MS07-040 - our ASP.NET 2.0 application started showing garbage data.
I read this http://support.microsoft.com/kb/940521/en-us[^] and suspecting that this is happening beacuse of this.
If we refresh the page then the garbage characters are removed.
Please help if you could suggest anything.
Thanks much.
Regards
modified on Wednesday, January 28, 2009 12:08 AM
|
|
|
|
|
Hi, I am still a newbie in ASP.net development,
I try to learn about nested master page, and I got this problem
Cannot find ContentPlaceHolder 'ContentPlaceHolderUser' in the master page '/OnlinePrayer/MasterPage/AdminUser.master'
I have done some research in internet, but until now, I have not got the right solutions.
basically, in my website, there are 2 master page : AdminUser.master and User.master
and AdminUser is child of User,
In User.Master , I've got this following code
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="User.master.cs" Inherits="MasterPage_User" %>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>UserPage</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:contentplaceholder id="ContentPlaceHolderUser" runat="server">
</asp:contentplaceholder>
</div>
</form>
</body>
</html>
and in AdminUser.master, i've got this code
<%@ Master Language="C#" MasterPageFile="~/MasterPage/User.master" AutoEventWireup="true" CodeFile="AdminUser.master.cs" Inherits="MasterPage_AdminUser" %>
<asp:Content ID= "SubContent1" contentplaceholderid="ContentPlaceHolderUser" runat="server">
</asp:Content>
I thought that I had define ContentPlaceHolderUser in User.Master, but I dunno why I still got this error? in Admin.Master
I would be grateful if you could give me feedbacks about my problems,
thanks
|
|
|
|
|
Hi,I hope I understand your problem in a correct way.
Here iam giving you the code for two nested master pages and an aspx page which uses these master pages.
try it out.
1.User.master as follows.
<title>Title
Some content in main master page
<asp:contentplaceholder id="ContentPlaceHolder1" xmlns:asp="#unknown">
runat="server">
Child master page will be placed here...
2.AdminUser.Master as follows(child master page for User as you said and here the Master page file is User.Master).
<asp:content id="Content1" runat="server" xmlns:asp="#unknown">
ContentPlaceHolderID="ContentPlaceHolder1">
This is child master page
| <asp:contentplaceholder id="ContentPlaceHolder1">
runat="server" EnableViewState="true">
Contents of pages...
Content in Child master page.
<asp:contentplaceholder id="ContentPlaceHolder2">
runat="server" EnableViewState="true">
Contents of pages.
|
3.Default.aspx page which uses the master page.(Master Page file is AdminUser.Master)
<asp:content id="Content1" xmlns:asp="#unknown">
ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<asp:content id="Content2" xmlns:asp="#unknown">
ContentPlaceHolderID="ContentPlaceHolder2" runat="Server">
Hope it helps. 
|
|
|
|
|
I am trying to find a way to display the contents of multiline textbox on a print preview page to display and print the entire contents of what the user has typed in. Once the user types in data in the multiline textbox, the data is stored in a SQL database and then retrieved to be displayed on a print preview page to be printed? Any ideas? Sorry if the question is a little easy for some of you but I am a newbie to C# and .Net prgramming. Thanks is advance.
|
|
|
|
|
I can't figure why my images are not showing up on my web form - instead, there is that little icon indicating the image is there (otherwise, it would be a red cross).
I vaguely remember it happened to me a while ago while working with images - but don't know what it was.
Any idea? thanks.
|
|
|
|
|
Is that image really exist? Is that specified path correct?
|
|
|
|
|
Can you post the code that you have written and the path of the image
|
|
|
|
|
Ekjon wrote: I can't figure why my images are not showing up on my web form - instead, there is that little icon indicating the image is there (otherwise, it would be a red cross).
I think the problem is with image path. Run you web site, Right Click on Red Cross Icon, Click Properties. Or check the same from View Source. Now Compare the path of original source and the current source.
|
|
|
|
|
Hi all,
I am facing a strange problem regarding session variables. I developed a website where a kept the login information in Session variables. It worked fine but now Session is not maintained i have checked after response.Redirect the session is lost and the value is null on the redirected page. I have searched a lot and tried many solutions but useless. I have only one session variable which is used to store the user name to display it on all pages and allowing some login based functionality.
Please help me in this issue.
Looking forward to hear a solution from codeproject.
Thank You
|
|
|
|
|
What is the SessionState Mode[^] in your web.config? Is it set to off?
Be careful, there is no Undo Button(Ctrl+Z) in life.
|
|
|
|
|
Dear Sir,
I am using
sessionstate mode="InProc" cookieless="false" timeout="40"
Every thing was working fine a week ago.
Thank You
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
