parent-child

nHibernate Mapping Issue - Cannot Delete members of a collection

Ok. So the situation is: Parent Class which has an IDictionary of Child Classes. I wish these child classes to be deleted when the parent class is. This works fine. I also wish to be able to delete members of the child class individually, and this does NOT work. So my Question is; Why can I not delete these child members? The error ...

Variable in child window does not receive value from parent

From within an html page, I create a child window to perform some filtering (choosing the printer, and what parts to print on the report). In order to show the part selection on the child window, I need to call a GetParts function from the parent window and return the recordset to the child. Here's some code to help: From the child wind...

What should my data access layer look like with a parent-child relationship?

I'm writing my first NHibernate application, but I guess this question applies to any ORM framework. My application is a simple bug tracker (devs all understand the problem domain, right?), and I'm wondering how best to model the Project/Ticket relationship in the DAL. A Project has multiple Tickets; a Ticket must be owned by a Project. ...

Problem setting parented to new form in DLL.

Please explain the difference between: ChildForm := TForm.CreateParented(AOwner) ChildForm := TForm.CreateParentedControl(AOwner) ChildForm := TForm.Create(AOwner); ChildForm.ParentWindow := AOwner.Handle This example may be complicated and convoluted, I'd really just like an overview of when people use the different kinds of Creat...

SQL query Parent-child distinct

I have a pair of SQL server tables. P contains id and name. PR contains id, interestrate, tiernumber, fromdate, todate and P.id. PR may contain many rows listed per p.id / tier. (tiers are a list of rates a product may have in any given date period.) eg: Product 1 tier 1 starts 1/1/2008 to 1/1/2009 and has 6 rates shown 1 row per rate...

Multiple parents tree (or digraph) implementation sql server 2005

Hi guys, I need to implement a multi-parented tree (or digraph) onto SQL Server 2005. I've read several articles, but most of them uses single-parented trees with a unique root like the following one. -My PC -Drive C -Documents and Settings -Program Files -Adobe -Microsoft -Folder X -Drive D ...

After Rails console restart, parent model can't find associated child model objects (and then can)

I've been stuck trying to figure out why a counter cache on my (parent) BlogPosts table won't update from the (child) Comments table. At first I thought the answer provided in my earlier question might be the solution but something happened after I went to bed last night because when I woke up this morning and restarted my Rails console,...

call different child function from same parent function

Im looking to have a common parent function like so void main (param 1, param 2) { <stuff to do> param1(); print("The function %s was called", param 2); <more stuff to do> } Where param 1 will be the name of the function to be called and param 2 will be some descriptive text. param 2 is easy and I have that solved, bu...

Best practice for parent/child-viewmodel-relationships in MVVM using Onyx?

Hy guys! I am currently working on a little WPF project using MVVM via the Onyx framework. My currentview architecture is like this: <DockPanel> <Menu DockPanel.Dock="Top" Background="#cecece"> <!-- Menu --> </Menu> <Grid> <views:TranslationView x:Name="translationView" /> </Grid> </DockPanel> ...

ASP.NET: Display Leaf Node as Parent within TreeView Control

Hey there, Is is possible to display a node without children as a leaf node within the .NET 3.5 TreeView control? I have a treeview that displays a list of companies as nodes which would each display leaf nodes for documents belonging to that company. If a company exists without any documents I would still like it to be rendered as pa...

NHibernate: Delete a child record from the parent collection

Hi, I'm developing a sample application so that I can learn the ins and outs of NHibernate. I am struggling with a delete issue. I wish to be able to delete a child record by removing it from its parent’s collection and then saving the parent. I have setup a bidirectional one-to-many relationship and inserting/updating is working great....

How to deal with ToolStrip in Custom Windows Forms Base

Hello, I'll share my cue with everyone! My Form Base Class is frmExportBase.cs, so any Windows Form that I will create or use have to inherit from it, so this will be fine : namespace SResocentroAnalytics.Forms { public partial class frmExportCobranzaDiaria : frmExportBase { public frmExportCobranzaDiaria() { ...

[Flex] parent data calculated from children fields in hierarchical data structure

Hello! In flex 3 I have a hierarchical data structure. I would like to display the content of it in a tree. My problem is that I have nodes which data calculated from children nodes. How to structure the hierarchy to make automatic changes to those parent nodes, if their children's data changed? For example: Every node has a warning f...

Pages with level

Hello guys, sorry if you'll find this question stupid, but I really need help. Here's some info about it. Database structure id | parent_id | level | name 1 | 0 | 1 | Home page 2 | 1 | 2 | Child of homepage 3 | 1 | 2 | Another child of homepage 4 | 2 | 3 | Sub child of page id 2...

What is the simplest way to get all the parents of a record using the id / parent_id model in mysql/php?

I'm looking for the simplest way to recursively get all the parent elements from a database using the adjacency list / single table inheritance model (id, parent_id). My select currently looks like this: $sql = "SELECT e.id, TIME_FORMAT(e.start_time, '%H:%i') AS start_time, $title AS title, ...

Implement a parent-child class hierarchy

I'm finding it difficult to find a decent example on how to implement a parent-child hierarchy class. I have a treeView control that I want to convert into a class hierarchy, adding extra data to each node and be able to easely iterate over each parent's nodes using IEnumerable. public IEnumerable<Node> GetAllChildsFromParent(Node paren...

How to Display Parent-Child Relationship in a single datagrid Windows Forms .Net

I need to know is there a way to dispaly parent-child relation in a single datagrid in Windows Forms .Net C# ...

How to terminate all [grand]child processes using C# on WXP (and newer MSWindows)

Question: How can I determine all processes in the child's Process Tree to kill them? I have an application, written in C# that will: Get a set of data from the server, Spawn a 3rd party utility to process the data, then Return the results to the server. This is working fine. But since a run consumes a lot of CPU and may take as lo...

selecting jquery children with hover

Hi, I have the following (broken) code: $(".old_post").hover(function(){ $(this > ".post_right_nav").show(); post _ right _ nav is a div(containing other divs) that holds some controls for the user to press. I'd like to only show these controls when the user is hovering over a post. How can I properly select the child element of ev...

Remove a TabPage

I am using C# 2005 to create a Windows application. I have a MDIForm (frmMainMenu) which contains a Menustrip and a TabControl. My ChildForm is frmPurchaseEntry. When the user clicks on a particular Menu option a new TabPage is created and the child form is displayed within the TabPage. I am using the following code in the MenuClick...