ASP.NET

N a v a n e e t h27-Jan-09 19:10

27-Jan-09 19:10

meeram395 wrote:
My issue is these are working in a Postback condition. Can I use an UpdatePanel dynamically so that the User doesn't get an impression that the page is actually posting back

How user is getting that page is posting back? A post-back and page refresh is not same. Are you saying your page is refreshing?

Not sure I got you correctly.

Smile | :)

Navaneeth

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meeram39527-Jan-09 19:58

meeram395

27-Jan-09 19:58

Thank you for the immediate response. Sorry that I didn't mention clearly the issue.

Page is not refreshing. It is posting back, means when the User Selects a country from the CountryDropdownlist, the corresponding States are populated from sql database by passing the CountryId.

I made the AutoPostBack property of Country to True so that it posts back to the server when the index changed. Hope this is clear now.

Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.

N a v a n e e t h27-Jan-09 20:38

27-Jan-09 20:38

Well, how can the second dropdown be filled without a post-back? AFAIK, you can't avoid page posting back. BTW, what is wrong by doing so and why are you trying to prevent it?

Navaneeth

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meeram39528-Jan-09 4:47

meeram395

28-Jan-09 4:47

You are right. The second dropdown is filled with a post-back only. But while using the UpdatePanel, the user will not get the feeling that the page is actually posting back. This will help him to enter the data in other controls and need not wait for the page to be reloaded.

Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.

N a v a n e e t h27-Jan-09 20:47

27-Jan-09 20:47

If updatepanel is used only for filling the dropdowns without page refresh, why don't you try Cascading Dropdown[^]?

Navaneeth

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Rajdev Ramasamy27-Jan-09 20:11

Rajdev Ramasamy

27-Jan-09 20:11

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

Sending Same Message to Multiple Users

meeram39528-Jan-09 21:35

meeram395

28-Jan-09 21:35

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.

sjs4u27-Jan-09 19:00

sjs4u

27-Jan-09 19:00

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

Aman Bhullar27-Jan-09 19:03

Aman Bhullar

27-Jan-09 19:03

How you are sending SMS

Are you using a SMS Gateway
OR
Sending SMS from mobile using symbian API's

sjs4u27-Jan-09 19:12

sjs4u

27-Jan-09 19:12

I am using SMS Gateway

Aman Bhullar27-Jan-09 19:22

Aman Bhullar

27-Jan-09 19:22

Then you need to check out with Gateway Documentation, whether they allow comma separated list in to field

sjs4u27-Jan-09 19:28

sjs4u

27-Jan-09 19:28

Yes. Gateway supports comma Separate list

J4amieC27-Jan-09 23:29

J4amieC

27-Jan-09 23:29

So then send it comma separated list Confused | :confused:

JavaScript function for custom server control

Aman Bhullar28-Jan-09 1:33

Aman Bhullar

28-Jan-09 1:33

then, where is the problem, send the comma separated list Roll eyes | :rolleyes:

AnuMaria27-Jan-09 18:47

AnuMaria

27-Jan-09 18:47

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

Re: JavaScript function for custom server control

N a v a n e e t h27-Jan-09 18:52

retriving a file from another drive

27-Jan-09 18:52

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.

Navaneeth

How to use google | Ask smart questions

sarang_k27-Jan-09 17:59

sarang_k

27-Jan-09 17:59

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...

Re: retriving a file from another drive

N a v a n e e t h27-Jan-09 18:54

After security update that is described in security bulletin MS07-040 - ASP.NET 2.0 application started showing garbage data. [modified]

27-Jan-09 18:54

You can't. ASP.NET will have access only in the website area. It can't access files from some other drive.

Navaneeth

How to use google | Ask smart questions

payback27-Jan-09 17:23

payback

27-Jan-09 17:23

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

nested master page problem

Arif Liminto27-Jan-09 14:20

Arif Liminto

27-Jan-09 14:20

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

Re: nested master page problem

josh41727-Jan-09 23:11

josh417

27-Jan-09 23:11

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">

Some content on page

<asp:content id="Content2" xmlns:asp="#unknown">
ContentPlaceHolderID="ContentPlaceHolder2" runat="Server">

Some content on page

Hope it helps. Smile | :)

Display contents of a multiline textbox for printing

krup7527-Jan-09 11:50

krup75

27-Jan-09 11:50

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.

Images not showing up

Ekjon27-Jan-09 9:55

Ekjon

27-Jan-09 9:55

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.

Re: Images not showing up

N a v a n e e t h27-Jan-09 18:56