|
Hi Paul,
I would have posted this as a separate question, but then I would have needed to explain what I am doing and how I am binding the nested ListViews... so I thought I'd try sending my question to you and hope for an answer.
So I have nested ListViews - the parent displays the categories, and in the ItemTemplate of this parent, I have another ListView that displays the questions under that category - now is there a way for me to get the category name bound to parent listview, in the child listview? I can achieve this by modifying my SQL and populate the data source of the child lv with category name as well, but I don't think that's the right way (unecessarily retrieving the category name again, when, it is already available).
Note - the category name is not available in any control of parent lv - it is just displayed using <%#Eval%> within a <th>
Appreciate your help - hope I am not pushing it.
~R
|
|
|
|
|
Yes. You can use a data binding expression to do this.
Below I have posted the code for a page that displays a hierarchical list of customers with orders from the sample Northwind database using ADO.NET Entity Framework. I use a databinding expression in the child list control displaying order details to display the customer's country against every order. The databinding expression is a bit clumsy (lots of calls to .Parent) but it works.
ASPX code:
<%@ 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">
<div>
<asp:ListView ID="ListView1" runat="server"
onitemdatabound="ListView1_ItemDataBound">
<LayoutTemplate>
<ul>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server" />
</ul>
</LayoutTemplate>
<ItemTemplate>
<li><%#Eval("CustomerID") %></li>
<asp:ListView ID="ListView2" runat="server">
<LayoutTemplate>
<ul>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server" />
</ul>
</LayoutTemplate>
<ItemTemplate>
<li><%#Eval("OrderID") %> <%#((NorthwindModel.Customers)((ListViewDataItem)Container.Parent.Parent.Parent).DataItem).Country %></li>
</ItemTemplate>
</asp:ListView>
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
</html>
Code-behind file:
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)
{
using (NorthwindModel.NorthwindEntities context = new NorthwindModel.NorthwindEntities())
{
ListView1.DataSource = from c in context.Customers
orderby c.CustomerID
select c;
ListView1.DataBind();
}
}
protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
{
string customerID = ((NorthwindModel.Customers)((ListViewDataItem)e.Item).DataItem).CustomerID;
ListView listView2 = e.Item.FindControl("ListView2") as ListView;
using (NorthwindModel.NorthwindEntities context = new NorthwindModel.NorthwindEntities())
{
var orders = (from o in context.Orders
where o.Customers.CustomerID == customerID
select o).ToList();
listView2.DataSource = orders;
listView2.DataBind();
}
}
}
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
|
|
|
|
|
Aha! The Container.Parent - thanks a lot Paul. I did find a workaround, but this is definitely looks sleeker.
My workaround:
In the ItemDataBound of parent lv, where I bind the child lv's data, I modified my SQL - I now first retrieve the category name using:
string catgName = ((System.Data.DataRowView)((ListViewDataItem)e.Item).DataItem)["quesCatgName"].ToString();
Then set my SQL to:
sqlStr = "SELECT quesId, quesText, quesHint, '" + catgName + "' as quesCatgName FROM....."
This way, the category is available as 'quesCatgName' in the child lv - dunno if this causes a greater overhead - I will modify my code to use the approach you sent.
Thanks,
~R
|
|
|
|
|
when trying to login from Logon page it is loging and going to master page and in the Master page different hyperlinks, when i click on any link it is redirected to Logon page.
Login Page btnlogin click code
if (DatabaseLayer.AdminDAO.UserExists(txtUserName.Text, txtPassword.Text))
{
FormsAuthentication.SetAuthCookie(txtUserName.Text, false);
Server.Transfer("~/Admin/Presentation Layer/MainPage.aspx");
}
else
{
Page page = HttpContext.Current.Handler as Page;
if (page != null)
{
page.ClientScript.RegisterStartupScript(page.GetType(), "msgbox", "alert('Sorry ! Your Login Failed');", true);
}
}
Web.config Code
<authentication mode="Forms">
<forms name="appNameAuth" path="./Admin/" loginurl="./Admin/Admin.aspx" protection="All" timeout="30">
<authorization>
<deny users="?" >
<authorization>
Main Page One Hyper Link
<asp:hyperlink id="HyperLink15" runat="server" navigateurl="~/Admin/Presentation Layer/News.aspx" xmlns:asp="#unknown">News
While clicking any of the Hyper Links it is redirecting to Logon Page.
|
|
|
|
|
in my web application my session got expire while working,
i have specified timeout 20
plz help me to solve this problem
|
|
|
|
|
mohit_p22 wrote: plz help me to solve this problem
What problem? Please restate in the form of a question.
only two letters away from being an asset
|
|
|
|
|
mohit_p22 wrote: in my web application my session got expire while working,
i have specified timeout 20
plz help me to solve this problem
I don't see what the problem is.
Is it that the session expired early? Did you not get a session at all? Is it something else?
|
|
|
|
|
Hi,
I have developed a web application which opens the PPT 2007 using asp.net 3.5. With Office 2003 on Windows XP it works fine, but when installed on Windows 2008 Server which has .Net3.5 and Office 2007 gives the following error:
Error:
Retrieving the COM class factory for component with CLSID {91493441-5A91-11CF-8700-00AA0060263B} failed due to the following error: 80080005.
StackTrace:
Server Error in '/VemoWeb' Application.
--------------------------------------------------------------------------------
Retrieving the COM class factory for component with CLSID {91493441-5A91-11CF-8700-00AA0060263B} failed due to the following error: 80080005.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Runtime.InteropServices.COMException: Retrieving the COM class factory for component with CLSID {91493441-5A91-11CF-8700-00AA0060263B} failed due to the following error: 80080005.
Source Error: Line 141:Line 142:
Line 143: PowerPoint.Application powerPoint = new PowerPoint.Application();
Line 144: PowerPoint.Presentation ppt = powerPoint.Presentations.Add(MsoTriState.msoTrue);
Line 145:
Source File: c:\inetpub\wwwroot\VemoWeb\App_Code\PPTChart.cs Line: 143
Stack Trace:
[COMException (0x80080005): Retrieving the COM class factory for component with CLSID {91493441-5A91-11CF-8700-00AA0060263B} failed due to the following error: 80080005.]
Dundas.Charting.Utilities.ChartPPTExport.CreatePPT(String chartImageFileName, String pptOutputFile) in c:\inetpub\wwwroot\VemoWeb\App_Code\PPTChart.cs:143
[ChartPPTExportException: ChartPPTExportException: Retrieving the COM class factory for component with CLSID {91493441-5A91-11CF-8700-00AA0060263B} failed due to the following error: 80080005.]
Dundas.Charting.Utilities.ChartPPTExport.CreatePPT(String chartImageFileName, String pptOutputFile) in c:\inetpub\wwwroot\VemoWeb\App_Code\PPTChart.cs:208
UserControls_Export.imgPPT_Click(Object sender, ImageClickEventArgs e) in c:\inetpub\wwwroot\VemoWeb\UserControls\Export.ascx.cs:142
System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +108
System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +118
System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053
Can any one please help me out to resolve this error?
Thanks in advance.
Ajay Jadhav
|
|
|
|
|
I'm going to hazard a guess that powerpoint is not installed on the server.
|
|
|
|
|
Hi Paddy,
Thank you for your response.
I just checked on the Server, but PowerPoint 2007 is installed there.
Looks like something related to permissions, but I am not sure what the solution is.
-----
Ajay Jadhav
http://www.divinet.co.in
|
|
|
|
|
Hi all.
We have an asp.net web email app. Intermittently when a user logs in, it shows the inbox for another user. After you refresh or login and logout, it show the correct inbox.
Has anyone ever experienced something like this? What could possibly be the cause? Went through the code, etc and everything seems fine. Perhaps the server setup?
Any help would be greatly appreciated.
Thanks
M
|
|
|
|
|
marky777 wrote: Intermittently when a user logs in, it shows the inbox for another user.
I think it can be cause of Session Variable, May be previous user session didn't clear properly .
|
|
|
|
|
Yes I get you, we ruled this out as a possibility though.
It's a mystery to us 
|
|
|
|
|
You haven't told us what login mechanism you are using.
|
|
|
|
|
Hi,
In my project I used Wizard control,in tht i heve 3 steps
1)EmpPersonal
2) EmpEducation
3) EmpSalary(setup type=finish)
I created 3 diff tables for 3 diff above steps
in EmpPersonal step EmpID automatically gnerate , i set the property in sqlserver IdentityIndex=true,auto icement by 1.
Iam not given the Empid from the design part.It is automaticlly incremented.
when i click finish button all the field values of 3 steps stored in database table.
bt in EmpEducation and Empsalary tables contains EmpId.
wht i want to is when i fill the EmpPersonal page ,when i click next button in wizradcontrol ,how i can get the default generated empid from empPersonal page and tht Empid display in a label in the EmpEducation page ans alsoEmpSalary page before click the next page.
plse give the solution as early as possible.
|
|
|
|
|
i have two button on page on save button causevalidation is true
and on refresh causevalidation is false first i press save
requiredfield validator gets active and my reuirement is on refresh is must disappear.
how is it possible please guide.
umerumerumer
|
|
|
|
|
Please clear the validationsummary control on refresh
Regards,
Rajdev KR
|
|
|
|
|
hello,
can any one help me in writing code to update web.config when installing web application.
need to update when installation wizard is running .. (datasourse, userid,password)...
|
|
|
|
|
What do you mean saying Update webconfig. Explain in detail what do you want to achieve and what are your Challenges
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswam@its.co.za
|
|
|
|
|
i am using following code but its not working
Protected override void OnAfterInstall(IDictionary savedState)
{
//base.OnAfterInstall(savedState);
string server = this.Context.Parameters["DATASOURCE"];
MessageBox.Show(server);
string userId = this.Context.Parameters["USERID"];
MessageBox.Show(userId);
string password = this.Context.Parameters["PASSWORD"];
MessageBox.Show(password);
//string newConnectionString = "User Id=" + userId + ";Password= " + password + ";Data Source =" + server + ";";
string newConnectionString = "Provider=SQLOLEDB.1;User Id=" + userId + ";Password=" + password + ";Data Source=" + server + ";";
string xmlConfigFile = "";
xmlConfigFile = Context.Parameters["INSTALLDIR"] + "web.config";
UpdateConfigFile(xmlConfigFile, newConnectionString, "wfMasterConStr");
MessageBox.Show("Updated");
}
|
|
|
|
|
rajkumar.3 wrote: string newConnectionString = "Provider=SQLOLEDB.1;User Id=" + userId + ";Password=" + password + ";Data Source=" + server + ";";
Just one suggestion Raj kumar, If this is your final/ production code, Please be aware of SQL Injection
BTW : "Re: dont be smart Vuyiswa Maseko" what was the reason to write this subject and why did you change that ?.
|
|
|
|
|
|
rajkumar.3 wrote: i already wrote this piece of code but its not working. every thing cant be explain to u better u can concentrate on ur own business
Don't be rude. If this is your attitude, I am sure you are not going to get any replies.
Good luck!
|
|
|
|
|
yeah i am sorry i was bit confused with that persons signature .. there is a link in his signature ...
in fact i am bit hurry in finishing this task ..
|
|
|
|
|
lol  so you thought my Signature was referring to you ?
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
