Not sure I'm asking the right question, but it's a start. I have a user control with a ListView and, ideally, I would like to nest this same control inside of the ListView to provide recursion. This would behave somewhat like a TreeView with child nodes. This might be a monumentally bad idea. :) In fact, I feed like MSFT is pointing me in that direction, because when I try this I am told that I can't do it
View 1 Repliesbasically trying to make a treeview.
i can query to get my parent list and pass that into the partial view. Im running into problems when i try and make a recurisve call to the view. i cant figure out how to pass the second group back in.
I use the following method to find a control on an asp.net page recursively:
/// <summary>
/// Searches recursively for a server control with the specified id parameter.
/// </summary>[code]...
I hit a problem because it was returning the wrong control. I tracked the problem down to the standard FindControl method, and fixed it by checking that the id of the control returned did actually match the one requested like this:
foundControl = start.FindControl(id);
if (foundControl != null && foundControl.ID == id)
return foundControl;
My question is why does start.FindControl(id) ever return a control that does not match the id requested?
I have anested ListView control. I also implemented a jQuery to automatically expand the TextBox control inside of the nested ListView Insert Template. The problem is, when the Textbox expand, the outer ListView control is not; therefore, the Textbox control expands underneath the buttons of the outer listView control. How do I expand the outer ListView control as the nested ListView textbox is automatically expand? One great example is in Facebook where if I add a response comment, it'll automatically push any comments below mine down. If nested Listview control is not the best way to do this, what are my options?
View 8 RepliesI am trying to implement a nested user control in listview and the user control doesn't get bound.
Here is my code.
[Code]....
I'm trying to implement a TreeView exactly like this:http://www.matthidinger.com/archive/2009/02/08/asp.net-mvc-recursive-treeview-helper.aspxThe problem is, that I'm using MySQL which doesn't support MARS (Multiple Active Result Sets).So, how would I do this, without being able to use MARS?
View 4 Repliesusing System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace amief.Models
{
public class WebsiteModels
{
public static void getPagesForPage(int pageId, dbDataContext db, List<page> myPages)
{
var pages = (from p in db.pages
where p.pageParent == pageId
select p);
foreach (var item in pages)
{
myPages.Add(item);
getPagesForPage(item.pageId, db, myPages);
}
}
}
}
calling the procudure
List<page> myPages = null;
WebsiteModels.getPagesForPage(0, db,myPages);
i'm getting an error System.NullReferenceException was unhandled by user code Message=Object reference not set to an instance of an object. on line "myPages.Add(item);" I don't understand the error...
I have a categories table which is set up to allow an infinite number of sub category levels. I would like to mimic the following:It should be clarified that sub categories can have sub categories. E.g. Parent cat -> level 1 -> level 2 -> level 3 etc.My categories table has two columns, CategoryName and ParentID.This list box will be used when assigning the correct category to a product.How can I write this?EditIn response to thedugas I had to modify your answer to work with my situation. I found some errors that needed to be fixed, but below is a final, working solution.
protected void Page_Load(object sender, EventArgs e)
{
using (DataClasses1DataContext db = new DataClasses1DataContext())
[code]...
When developing a rather complex web application that has to be localizable, it can be quite a dawnting task to make even the smallest change like changing a name for an abstract object type.To illustrate the problem, let's assume the user can create objects through our web application called a "FooBar". The web application most probably have numerous resource strings making reference to the object type "FooBar", for example, "Click here to create a new FooBar", or "Delete all the selected FooBars".During or even after the development life cycle of the web application, the owners decide that "FooBar" is not an appropriate name, and would like it to be renamed to "Thingamajic". In the web application there are thousands of references to "FooBar". Now one has to find all and replace them.
View 1 RepliesI have a question regarding a situation that occurs with GridView, ObjectDataSource in ASP .NET application. The GridView is linked to the ObjectDataSource and both are included within an UpdatePanel letting the GridView to fill in an asynchronous way from a form in the same page so it gets more rows as the user enters the data:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="ObjectDataSource1">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" ReadOnly="True"
SortExpression="Name" />
<asp:BoundField DataField="Periodicty" HeaderText="Periodicty" ReadOnly="True"
SortExpression="Periodicty" />
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
SelectMethod="GetSessionNames" TypeName="Simulation"></asp:ObjectDataSource>
<asp:Label ID="Label27" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="NewWebSessionButton" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
I start the project with Visual Studio 2008, fill the form and it works correctly. Then I stop the execution: rerun again and the data I entered in the previous run is in the GridView. Is like some sort of cache saved the data from the session before. I checked that EnableCaching property is set to false for the ObjectDataSource. If I Rebuild Web Site in Visual Studio (not just Build) then it works corretly leaving the GridView empty. Is this caused just becuase of Visual Studio? Can it be turned off? And will it happen in the final IIS it will run on?
I want to build a survey system where you can build a form with questions and some answers to these questions and then members who will log in will be able to take the test.
Then i want to present the different results from the test in some diagram or something like that.
I'm looking for a good way to prevent the scenario of the page calling itself repeatedly.
I have a page, that to be rendered needs to make an HTTP request to an RSS feed. If the URL to that RSS feed happens to be the current page, it will fire off a request to itself. The new request would start off another request to the page, which would start another request... This continues until the site grinds to a halt when all available connections are busy in this recursive loop.
A few notes:
The URL to the RSS is entered by the user.
This is a page in a CMS, the URL of the page could be almost anything and could change after the RSS URL is entered.
In this case, the user entered a URL to a remote server that lead to a redirect back to the page.
A few ideas:
I could just deny all requests from the localhost IP before rendering.
Before sending the request, I could track in a common location which requests are active and not even send it if it's already in the middle of another request to the same address.
Maybe add a custom user-agent to the request header and deny the request if that user agent is seen?
I am using "Classified Ad" starter kit of Asp.net 2.0. In the Post Ad feature that using the ad "CategoryPath" control that recursively update link based on user select ad category. After user satisfied with the ad Category selection, the control generate a complete button link of the entire path.
If I am going to convert CategoryPath control from Asp.net to MVC / Ajax, how about I am going to do this?
I am writing a program to crawl the websites. The crawl function is a recursive one and may consume more time to complete, So I used Multi Threading to perform the crawl for multiple websites. What exactly I need is, after completion crawling one website it call next one (which should be in Queqe) instead multiple websites crawling at a time.I am using C# and ASP.NET.
View 4 RepliesI added a new link to a master page on my website. Immediately after saving, I started getting this error:
Recursive fallback not allowed for character u003F. Parameter name: chars
I remove the new link and I still continue to get the error.
You can see this for yourself here:
[URL]
Currently I'm working on a extensive form, which I'd like to organise by grouping input fields in groupbox-like panels. These panels have an header, a minimize and pin icon. Also inner controls should be able to perform two-way binding to the FormViews datasource.
I can't find any builtin asp.net control that does the job. What is the best way to accomplish this feature request? Any examples available on this (can't find a decent one)?
I am using a CustomSiteMapProvider to draw the SiteMap from a MS SQL database table. If I select all the rows in the SiteMap, everything works correctly. I now want to select a subsite from the SiteMap and display it and this subsite's subsites only. I am using recursive SQL to do this. The code below works correctly except the root record, record number 286, is not included in the result:
[Code]....
How do I include the root record, record ID 286, in the result?
I have created a server control which uses recursion to create a menu. It essentially outputs nested lists with anchors inside them.
Now, this works perfectly, however, since the control is calling itself to render the child menus, it is also rendering multiple identical WebResource.axd javascript file references in .
how to stop this from happening? I just want the one reference in my tag.
First of all, I am introducing myself. I am a new in web developer.I want to build ASP.NET Media Player Control in C# .Net code . Now we want to play all music file . For this we are looking API scripting.
View 3 RepliesI have a few tables with these fields:
Code:
ID, Description, Active. I want to build a user control to add,edit, delete records from these tables since they have the same types of fields.
I'm not sure what the best controls would be to use in my user control, as well as how I would be able to implement a class in this scenario.
I know how to build a basic user control.
I'm trying to build a custome gridview control. now I've gotten quite far and I am now a bit stuck. I have a property that allows me to specify the columns datatype.
Now when I specify either a datetime or date variable I need to format it properly. Thing is, if I use a database other than sql server how can I format the dates properly. ZI want to make my grid as reusable as possible.
If i use date.tryparseExact I need to know the foemat of the date value being passed in. Problem is, I won't always know the exact format.
I am a new in web developer.I want to build Media Player Control in C# .Net code . Now we want to play all music file . For this we are looking API scripting.
View 3 RepliesWhat is the best way for me to build a control that will kinda work like an Access table in ASP.NET?
That is, I define, say, 3 columns. The user can add/edit/remove rows. It can be one row at a time, that's fine. There are other fields on the form too, not related to this table. When the user is done adding rows of information, then they hit 'submit', and at that point, is when I grab all the data out of the control and save to a database (or xml file or whatever).
I've tried to build something with ListView and/or GridView.
In our current ASP.Net Webforms application we have several composite/template server controls that only exist for a common look and feel. For example, we have a panel control that has a title, a place for buttons related to the contents of the panel, and of course the contents. How is this best accomplished in MVC? RenderPartial doesn't get done what I need here. Should I still be using the same controls, but just on a view page? These controls don't really do anything on postback, they are only there for a common look and feel.
More Info:
We have a control in Webforms that implements ICompositeControl. We have a few properties on this control like Panel (type Panel), Buttons (again type Panel which would hold buttons) and a property Title of type string. Visually it looks like
How can I build an user control that takes a list as a parameter, i.e:
<foo:TabMenu runat="server">
<Tabs>
<Tab Label="Tab1" PanelId="pnlTab1"/>
<Tab Label="Tab2" PanelId="pnlTab2"/>
<Tab Label="Tab3" PanelId="pnlTab3"/>
</Tabs>
</foo:TabMenu>