VS 2008 - Implement The Mdi Parent / Child Associations Rather Than To Go And Declare Them Each One Individually

Aug 24, 2009

I have been developing an application for quite some time now. I have decided to create an mdi parent form to hold all the windows I have done so far. Is there an easy way to implement the mdi parent/ child associations rather than to go and declare them each one individually.

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Interface And Graphics :: MDI Parent / Child - Child To Check To See If It Is The Last Child Object Before Closing

Feb 18, 2011

Im working with MDI parent/child objects. when closing the child objects i need the child to check to see if it is the last child object before closing. i couldn't find anything on google, maybe im searching for the wrong thing.

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VS 2008 Parent Child Combobox?

Nov 16, 2010

have a form with 3 comboboxes and 3 Bindingdource dropped on, Now I can manage to have the first dropdown box display a list of manufacturers ok then when one is selected to display the range of products made and be able to open a form etc based on that, but what I really want to do is in the 3rd combobox display a list of models of the product in combobox2... Is this possible?. I have spent hours trying to figure this out and looking on the net but all examples only point to 1 parent and 1 child..

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.net - Parent/Child Relationships Failing When Getting Data From Parent Class With Multiple Forms Open?

Jun 24, 2009

I have a main form, and some sub forms, and each sub form can have some sub forms. When I have multiple sub forms open, and I try to get data from the parent form, it returns the data from the wrong parent form.For example I have two instances of Mainform.subform running. If I do something like this in a child form of one instance of the subform. It returns data from the other subform.

dim l = Mainform.subform.listofdata

Edit:I am using visual Studio 2008. Winforms, form designed using designer. In my mainform I am doing this

Protected Friend frmMain as Mainform
frmmain = new mainform

In frmMain I am doing this

Protected Friend frmsub as new Subform'
frmsub = new subform

[code]....

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IDE :: VB 2008 Datagrid The Parent Child Hyperlink?

Jan 19, 2009

How can i write code to check if the hyperlink that would show the data for the child table has been clicked. When i try to use code such as currentcell.gettype it would simply say datagridcell but does not provide any more information?

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VS 2008 Parent And Child Rows In The DataGridView?

Sep 16, 2010

In my DataGridView table i have one column called "Category".In this "Category" column values are like

3101,
3102,
3103,

[code].....

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VS 2008 TreeViews - Parent And Child Nodes

Apr 25, 2010

I'm new to this Visual Basic stuff. I have TreeView under the name of TreeView1 and it has two Parent nodes, one is Library and the other is Store. Under Library and Store I have childnodes and thats were I'm stuck. For example under Store there is Downloads and Apptrackr.

What I want is when a user clicks on Apptrackr it runs this piece of code
WebBrowser1.Visible = true
DownloadsBrowser.Visible = false
And when the user clicks on Downloads it then does the opposite
WebBrowser1.Visible = false
DownloadsBrowser.Visible = true

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VS 2008 Update Parent & Child With Relation

Aug 7, 2011

I am going to ask a dumb question. I want to update my tables (two). There is a one to many relation between them. I know how to update when only one table is update, but how do i update when there is many on the other side. My problem is that , if one of the records on the many should become redundant, how would i delete it in the update process. If only the content changes , it is not a problem, i know the data just gets written back to the tables, but if one of the child records is not delete, how would it work I need some clue on the SQL statement using OLEDB

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VS 2008 Updating Child Table Before Parent?

Jan 11, 2011

I have a situation where a database table is updated with records inside a loop. Every record in this table has a parent child relationship with another table. This child table is also updated subsequently inside the same loop.I am creating the datatable for Parent table and adding records inside the loop, but committing the records in the database (using SqlCommandBuilder) outside the loop only once.

Inside the loop I am also calling the function for updating records in the child table. Because the adaptor and datable objects are created inside the child table function, I need to commit records in child table inside the function only. So this happens before commit of parent table. Because there is a PK-FK constraint in the database, an error is generated.

Simplest solution would be to bring all code inside one function. But I don't want to do that. Besides this parent child relations can go upto any levels.

[Code]...

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Releasing A Child From A Parent Control Without Knowing The Parent(WPF)

Apr 10, 2010

I would like to know if there is some simple code to release a child control from it's parent control, without having to name the parent control. In pseudocode, I'm looking for something like this:

[Code]...

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VS 2008 - Passing Data From WPF Parent To Child Form

Jan 27, 2010

In my WPF Form1 I have TextBlock1 that fill from AddressTableAdapter. To edit address user must click EditButton to open Form2 to perform changes. My problem is passing data to Form2 from Form1. In Form2 I have 3 TextBoxes Street, City, Zip, and StateComboBox. I try to code in Loaded procedure of Form2 like this and got error message:

Private Sub Form2Detail_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded
Me.AddressTableAdapter.Fill(Me.AbcDataSet.Address)
Me.StreetTextBox = IIf(IsDBNull(AbcDataSet.Address.StreetColumn), "", AbcDataSet.Address.StreetColumn))
Me.StateComboBox = IIf(IsDBNull(AbcDataSet.Address.StateColumn), 0, AbcDataSet.Address.StateColumn))
End Sub

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VS 2008 - Show Child Form In MDI Parent Taskbar?

Mar 30, 2012

I have developed vb.net application and have one main form with isMdiContainer property true. It has one Menustrip control docking on top of the form and StatusStrip docking on bottom of the scrren. When User click on any menu item it opens new form or if already opened, show it. My application allow to open multiple child forms opened at same time and all forms StartPosition is set to CenterScreen. My problem is becuase all forms are in cetenr it ovelaps each other and user wouldn't know which form(menu option) is opend. I would like to see all opened forms in different tabs (like in windows taskbar) in bottom of MDI parent form.

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VS 2008 : Adding Parent And Child Nodes To TreeView?

Oct 31, 2010

I am not sure I am getting the concept of referencing nodes in a treeview. When I hard-code nodes like:

tnParentNode = New TreeNode("ABC")
tvReports.Nodes.Add(tnParentNode)
tnParentNode = New TreeNode("Some Other Company")

[code]....

I get two parent nodes and one child off Some Other Company. However, when I pull information from a couple of tables to set up the parent and then the child nodes, I only get the parent nodes.So I pull the main parent nodes from one table and the child nodes from another table.This code pulls the parent nodes without any problem:

strSQLText = "SELECT lID, sCatName FROM Category ORDER BY iSortOrder DESC"
reader = GetReader(strSQLText)
While reader.Read

[code]....

But this does not add the child nodes. I am assuming it is because of the first line in the above reader.read while loop. I must not be referencing the proper parent node but I am not sure how to do it.

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Creating DataRelation With Parent And Child Tables And Generating Xml With Subnodes For Child Table?

May 21, 2012

Dim obj_DataTable As New System.Data.DataTable("Category")
Dim obj_DataSet As New DataSet()
'Declaring the array of DataColum to hold the Primary Key Columns

[code].....

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Bind Child/Parent Instead Of Parent/Child?

Apr 28, 2009

Applications_Type is a lookup table for Applications.What I am trying to do is provide a drop down list of applications and a label that displays the selected application type.[code]...

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Insert SQL 2008 Parent And Child Rows In A Single Transaction?

Nov 13, 2010

First, a little background (greatly simplified): I have two classes, one called Entity and one called Item which a subclass of Entity. They each store their individual properties in seperate SQL 2008 tables using TableAdapters generated by a strongly typed DataSet. The Entity class has a Save() method that looks like this:

Public Sub Save()
entityTableAdapter.Update(entityRow)
End Sub

[Code]....

Indeed, the SQL table does not contain a row in the Entity table with the necessary ID at this point because the transaction is not complete.

My goal is to prevent the Entity record from being inserted if inserting the Item record fails. I could write code to delete the Entity record again, but this does not seem very elegant to me...

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How To Work On Both Parent And Child Form Without Closing Child

Apr 10, 2011

i have created two forms A and B when button in form A is clicked B is invoked when B is running its not possible to work on A until i close form B. How can i work on A without closing B

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Passing Data From Child To Parent Form Which Is A Child Of Another One

Apr 17, 2012

i have three forms

when i click button1 on form1=====> form2.showdialog()
then click button 1 on form2 =====> form3.showdialog
then click button 1 on form 3 =====>

[code].....

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VS 2008 Resize Of Parent Form Keeps Relative Size/Loc Of Child Forms?

Sep 17, 2010

I want a set of child forms to keep their relative sizes and locations to their parent form when parent form is resized. So if one child form is opened and covers the lower right quadrant.. it will remain a quadrant for whatever resize is done on parent form.

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Displaying And Updating Data In DataGridView With Parent Child Relation Using N-tier Architecture (2008)

Jun 16, 2009

I have recently built an N-Tier app using VB.Net 2008. The application is based on Beth Massi's tutorial at [URL] I am trying to incorporate a datagrridview control on a Parent form - one parent (father and mother) to many children. For example,

[Code]...

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Filter Parent / Child Table In Linq Query Based On Entities In Child Table?

Jul 9, 2010

I have a table (Projects) which is linked to projectVersions on projectID..projectVersions contains several columns on which I'd like to filter a returned project (and associated projectVersions) list. For example there is a "capacity" column and a "country" column. I am doing a filtered list of projects on one page and I'd like to include all projects where any one of the associated projectVersions has a capacity of 750ml and a country of "France" for example.It may be that a particular parameter is not set and so I pass a zero to indicate not to filter on that.I guess this needs some kind of subquery as when I try and do something like this: [code] it doesn't work as the "xxx" bit, being one-to-many, expects me to specify an item to get at the entities within and yet I want to query where ANY of the associated versions match one of the criteria.

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Asp.net - How To Pass An ID From Parent ListView To A Child Repeater Inside The Parent ListView

Oct 12, 2011

I have a listview "CategoriesList" and i have a repeater "NewsRepeater" inside the listview "CategoriesList"

<asp:ListView ID="CategoriesList" runat="server" DataKeyNames="CatID" DataSourceID="CategoriesListODS"
EnableModelValidation="True">

[Code]....

how to pass the catID from the listview and make it as SelectParameters in ObjectDataSource "NewsRepeaterODS"?

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Implement Singleton In Parent Class?

Nov 18, 2009

Implement singleton in a parent class.Infact what I want is that All the childs etc. should use same instance of the parent.

I have implemented singleton, Changed the scope of parent class's constructor to "Protected". But in the application when ever the new child's constructor is called i.e. "Dim abc as New Ch1()" the constructor of Parent is called (as it is Proctected and can be access from child).

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VS 2008 Insert Rows In Between Rows In Gridview Based On The Parent And Child Nodes?

Jan 20, 2011

I am working on Treeview control and Gridview Control VB.NET08. In the Treeview i have Parent and Child Nodes. Like:

- 31
3101
3102

[Code].....

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MDI Child Maximized - The Child Form Shows Maximized In The MDI Parent But Behind The UserControl

Nov 12, 2010

Note: I am working with Visual Studio 2010 Professional. Note: There are a lot of MDI Child posts, but none (that I have found) that apply to my scenario... Scenario I have an MDI form with a UserControl docked at the top. The UserControl is for navigation and is ~50 pixels in height. When I show a child form with its WindowState property already set to 'Maximized', the child form shows maximized in the MDI parent, but behind the UserControl.

[Code]...

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VS 2008 Reference Parent Class From Inside Child Class?

Apr 11, 2009

I have a 'property management class' that contains several functions and properties. I have several other classes that use the 'management class' as a property to derive the value of several of its other properties.Is there a way for me to reference the outer class from the 'management class' functions without having to pass it as a parameter? I ask because several different classes can have this 'management class' as a property and am having a hard time typing the parameter.

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Declare Properties/Events Such As IsPostBack/Init On An Interface That A User Control Will Implement?

May 2, 2012

I'm having trouble porting some .NET2-era C# to .NET2-era VB.NET. Specifically, I am trying to define an interface that an ASP.NET user control will implement.(For background, I am trying to re-implement Phil Haack's Model-View-Presenter example from several years ago: http://haacked.com/archive/2006/08/09/ASP.NETSupervisingControllerModelViewPresenterFromSchematicToUnitTestsToCode.aspx)

The C# interface I'm working from defines properties and events (IsPostBack, Load) that are already implemented by the base control.However, VB.NET is forcing me to explicitly implement these properties/events in the user control (Public Property IsPostBack() As Boolean Implements IView.IsPostBack...). I'd like to just define these in the interface and not have to do anything special in the code-behind of the implementing user control.I'm assuming that I can do this in VB.NET, I just don't know how. I've spent all sorts of time googling/bing-ing, and haven't come up with the answer.

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Implement User Confirmation Of Exit On An MDI Parent Form?

Mar 17, 2011

We were using the parent's FormClosing event handler to get user confirmation of the exit before continuing, but have just discovered that the child windows get closed before this is run. We only want a single confirmation message box, but I guess that would require the child windows to ask the parent to confirm.

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VS 2008 : Setting Up File Associations?

Jan 29, 2010

Under Project Properties, Publish, Publish Options, File Associations, you can set what file associations your project uses. What should I set for ProgID?

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VS 2008 Accessing GIF's Frames Individually

Sep 9, 2009

I did some research (mainly in the Drawing namespace) about animated GIF files and I know you can see how many frames are in the specified GIF using the GetFrameCount method, however how I can access each frame directly/loop through them one by one. This is my first time trying anything like this and I can't seem to find the right methods, classes or information. I'm not even sure if this is possible using the .NET framework.

[Code]...

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