Get The Latest Record For Every Parent Row?
May 3, 2010i have parent ->child tables i want to get the latest record for every parent row of the parent table how?
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How To Show And Save Latest Record On Form With Label
Dec 5, 2010How to Show and Save latest record on VB.net 2008 form with Label? I have a vb.net form to insert database to file *.mdb (Ms Access). But after I inserted database I want it save and show record that I just added on VB.net form. It's mean that current save without database...Show and Save Direct on Form's Label.
View 1 RepliesForeign Key Constraint Error / Parent Record Does Exist But Won't Let Child Record Be Created
Feb 21, 2010While I've previously many years of relational databases and procedural languages, I'm stumbling with Visual Basic. In this problem, the simple situation is that I have two files, parent and child. The primary key of the parent file (Area file) is linked by a relation to one of the two fields that makes up the primary key in the child file (Project file) (unique key is formed from 'area' and 'project'). I have the default table adapters created on both files. I have created two maintenance forms showing one each of the two files in datagrid view format.I can create some records in the Parent (Area) file, but when I try to create a record in the child (Project) file, using one of the valid key values from the Area file, I get the 'ForeignKeyConstraint [relation name] requires the child key values [actual value] to exist in the parent table' which I'm absolutely definitely sure it does.
I haven't done any actual coding for those two maintenance forms, just dragged-and-dropped the files from the data sources screen onto separate forms so it creates the controls itself. But I can't work out, if it already knows the data does exist because I can load it back in to the Area maintence form, why it can't check itself to find out the record does exist. Why does it think the record from the parent record doesn't exist? It does exactly the same thing, whether or not the database is in access or SQL Server Express. I have all the latest updates.
Child Record Won't Add But Parent Exists
Jul 13, 2011Working on an VB/ASP website in Visual Studio 2008. Getting the error "You cannot add or change a record because a related record is required in table 'abc'
It is true that table xyz (the target of the INSERT) is in a parent-child relationship with table abc. The PK in abc is a column RequestID_lng. The FK column in xyz is also named RequestID_lng
This is the only relationship these 2 tables are in.
I am trying to add a row in xyz with a value of 45 in the FK. There is already, previous to this action, a row in table abc with a value of 45 in the PK. So the parent already exists for this child.
I have used the watch window to copy my SQL code for the INSERT query that is being executed. I pasted that code into a new query in the Access DB and executed it without problem - it actually added the row that .Net should have.[code]...
VS 2005 Deleting Record From Parent / Child Bindingsource
Sep 14, 2011I have a form with a parent bindingsource showing details and a child bindingsource showing the multiple line items in a dgv. This relationship has the properties set to enforce the constraints and cascade the updates and deletes. When I add a new parent record there is a function for inserting default line items into the child. I have this code fr deleting a record,
[Code]...
edit: jmc posted a nice solution to this problem in the code bank just recently but I could not get it to work in 2005, this line, "AddHandler Me.LOTBindingSource.Adapter.RowUpdated, AddressOf parentAdapter_RowUpdated" throws an error. It say "Adapter is not a member of the System.windows.forms.bindingsource.
Showing Data From Child Table By Clicking On Parent Record?
Apr 4, 2009Instead of connecting to database,I create datacolumns of two data tables.assign foregin key constraints and primary keys to the columns.Add these datatables to dataset and create relationship between them.Now by using RowFilter property,how to display the child table in a datagrid by clicking on parent record in another datagrid?Accept and Award Points Accept as Solution
View 2 RepliesRetrieve The Record And Display The Record In A Listbox Displaying The Time Field As The Text For That Record?
Apr 18, 2009I hav a web service which pull records from a database and I am hosting these services in IIS which works fine but I am trying to retrieve the record and display the record in a listbox displaying the time field as the text for that record.I have created the following function
public sub get_data()
dim dt as new data.dataTable
dim service as ws webservice.webservice
[code]...
Call A Member Through Its Parent's Type That Shadowed A Parent Class Implementation?
Aug 3, 2011This is a challenging one that got me stumped while I was coding today. Suppose I am running the Sub Test1() and Test2() and would like to print out the value of the Shadows method of the instance of the object I am passing in to TestCall() (see below - it is clearer) using the following restrictions:
Can't change the contents of Class A, B, and C
Can't change Sub Test1() and Sub Test2()
TestCall() can't have an if, select case etc. statement that tries to figure out the type
[code].....
.net - Parent/Child Relationships Failing When Getting Data From Parent Class With Multiple Forms Open?
Jun 24, 2009I 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]....
Releasing A Child From A Parent Control Without Knowing The Parent(WPF)
Apr 10, 2010I 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]...
Quering Record - Check A Record In Database Before Inserting A New Record
Aug 9, 2010I am trying to check a record in database before inerting a new record here is my code but problem is when i enter a names first alphabet it imediatly populate massage. i want to check it after entering whole name
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Try
Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" &
[CODE]...
Get Latest File Name
Aug 25, 2011produce VB script which looks at a particular folder and gets the name of the latest file. I have a folder which holds database backups and I need a script that gives me the full name of the most recent backup (file name consists of a date and time stamp). This file name will then need to be used in a variable within SSIS.
View 3 RepliesGet Latest Version Of The Assembly?
Jul 24, 2009I would like to get latest version of the assembly. how?
View 3 RepliesLatest Version For Workshop
Nov 7, 2010I am not sure what is the latest version of the workshop.url...
View 2 RepliesBuilding An EShop 'Latest Products'?
Apr 2, 2012I was trying to do a 'Latest Products' page for an eShop project I'm working on. asically, I want to show a number of products, say 10, from a table in my db that where added in my database in the last 30 days or less.irst I tried to use the GridView function in VB.NET, where it auto-populates the table but can't be limited and then I tried this SQL statement, which isn't working, giving me an error.
SELECT *
FROM Product
WHERE DateAdded > (SELECT DATEADD(d,-30,(SELCT MAX(DateAdded) FROM Product)) AS "Last 30
[code].....
Check For Latest Version On A FTP Server?
Jan 23, 2009I have a radio program.
I can play radio station in it. This is my question: How can I check for latest version on a FTP server?
Latest Image Upload 2.0 Applet?
Dec 12, 2009I use the following coding to show six images from the latest photo album i uploaded picture to. However the images being shown are the 1st six images in the folder (which are the ones the oldest uploaded) not the final six images uploaded.Anyone can help me what should i change in the following coding to show the last six images in the folder.
<%
latestfolder = "na"
latestdate = cdate("01/01/09")
[code].....
Receive The Latest Version Number?
Aug 12, 2009I've defined two numbers. ThisVersionNumber and LatestVersionNumber, I want to compare them, and so if ThisVersionNumber = < LatestVersionNumber it will show a dialogue.
How do I receive the latest version number which is hosted at [URL]
Return Latest Value From Database Table
Jan 24, 2011I am new to development and I'm using VB.NET to build an application for my kids. I want to teach them how to manage their money so I've decided to build them an application. I have a database table which stores all transactions aswell as the userid (users have to login). When one of my kids opens his bank account, I have got it so that it only shows his transactions with date and bank account balance and no-one elses. My question is, how can I retrieve the latest balance and display it in a label at the top of the form?
View 3 Replies.net - Update DataColumn's With Latest Column Information?
Nov 26, 2009I have a dataset with a number of data columns, due to sizing issues I've updated a number of the varchar columns from say VARCHAR(20) to VARCHAR(50).I'd like the DataTable to automatically grab the new column information, is this possible? I'd rather not go through each column in the table and update the length.
View 1 RepliesConnect To A Server And Update App To Latest Version?
Feb 17, 2009is the a program or a script that will allow people to click a button or something on a vb 2008 program and it will connect to a server and update it to latest version?
View 1 RepliesDisplay The Latest Symbol When Drawing A Graph?
Apr 19, 2009if there's a way to just display the latest Symbol when drawing a graph. My app displays "real time" data from a pointPairlist and I want one graph just to be a + mark with no trace.
Dim myCurve As LineItem = m_graphPane.AddCurve("", m_pointsList, Color.Red, SymbolType.Plus)
This will show a red line with a + with every pointpair, I just want to display the latest pointpair, as an +.
IDE :: Auto-Referencing Latest Version Of Assembly
Feb 23, 2009We have one program that acts as a "server" (so to speak) and many programs that reference it. every time we update the server, we are forced to update all the dependent programs to reference the new version number. Our IPC communication protocol is pretty stable and doesn't change, so we aren't worried about upgrade incompatibilities. I would like to know how to automatically reference the "latest" version of an assembly. What I mean is, if I choose Project->properties->references, I always get a specific version. Is there a way to reference whatever the latest version is? This way, we wouldn't have to update every program that is dependent on our server every single time there is an update.
View 1 RepliesIDE :: Why System.dll Is Not Referencing The Latest .Net Framework Version
Apr 25, 2010I have a VS2010 solution (upgraded) that has two projects, an EXE and a DLL. In both the Target framework versions are 4.0. When one look at the references of the EXE project, one can see that the System.dll (and System.Core.dll and so for) references to the v4 version (the latest); however, in the DLL project the references points to the .Net Framework v2 version. Why is this happening? How can I make all my projects to point to the v4 libraries?
View 3 RepliesListBox Show Latest Item Added?
Jan 17, 2008I have a ListBox that is only about 4 lines high. After I add more than 4 Items, it attaches them to the bottom of the list outside of the viewable area with out scrolling. Is there any way to either add items to the top of the list or make the latest item visible? I want to keep all the items in the list in the order they were added whether it is oldest to newest or newest to oldest.
View 8 RepliesNeed To Load Latest Version Of Specific Assembly
Nov 10, 2010I have this situation where LoadWithPartialName appears to be the only good alternative, although it is marked as Obsolete. I work in a very tight dev environment with versioning and deployment policies that cannot be easily changed or bypassed. Let's say there's a .NET executable that I have no control on (from another division). Let's call this the client AppA application. AppA's version is 10.11.12.x. Application AppA has a direct reference to one of our class library that provides some service to the caller (returns some information).
Let's call it SvcB and the version is also 10.11.12.x. Now, AppA's division does not need to update their system as often as we do, so AppA's version will stay 10.11.12.x for some time, probably until we decide to change the format of the class that is exchanged between us. Our division needs to change the logic behind the service SvcB more often and the version must change with every major deployement.
So let's say we change the logic and we deploy a new version of SvcB, 11.02.11.x. AppA will still reference the old version, so the logic being used is now incorrect. We are thinking of creating a new "facade" to our service. Let's call it SvcFrontB. SvcFrontB's version will stay the same, in sync with the AppA's own version. Now I need SvcFrontB to load the most recent version of SvcB through reflection. This way, I am sure the latest logic is always used. How do I achieve that without using LoadWithPartialName ?
Open Event Viewer Windows Latest 5-10?
Feb 21, 2011i'm building my own monitoring system. I have allot but i'm stuck at 1 point: I wanna have a list of events out of the event viewer, it polls every 30 min.i have this:
Dim eventLogApp As New System.Diagnostics.EventLog("Application")
Dim eventLogEntry As System.Diagnostics.EventLogEntry
Dim eventCntr As Integer = 1[code]....
but this is way to heavy for a poll of every 30 min. Because is checks the WHOLE event viewer.What i want.. just the latest 5 or 10 events from the event viewer to reduce the load..
Retrieve Latest's Emails From A POP3 Server?
Apr 3, 2012I was recently working on a project that involving connection to a POP3 Server. I was using this piece of C# from CodeProject[URL] had complied it into a DLL and was using it in VB.NET.I'd connected to my Hotmail Account (not many mails) and it seems to work just fine. After that, I connected to my GMail account... I stared seeing errors!POP3 is meant to fetch emails only from the Inbox. Even when I made my own program to cross-check the problem, I saw that when I requested for the number of messages, the GMail POP3 Server returned a value which is about 5 times less than the actual inbox size.
255 Emails in my Inbox?? Online it shows me 2,414 emails in my Inbox.And secondly, my MAIN QUESTION is that how does one fetch the LATEST email from the POP3 Mailbox. What I've fetched here was an e-mail with ID 1! I want to fetch the top 20 emails (that were most recently delivered to the account)...Is there any work around for how to fetch the LATEST email from the POP3 Server rather than the oldest emails? I've also tried to connect to the Hotmail POP3 Mail Server. Again a "RETR 1" command fetches me the oldest email and not the latest one!
Select DataRow With Latest Date Using LINQ/
Jul 23, 2012I have a datatable where there are 3 columns
ID | Name | Date
and i have 4 columns
1 | ABC | 20/07/2012
[code].....
VS 2005 Automatically Use The Latest Version Of Framework In Pc?
Mar 11, 2010i use VS 2005 ,so it use ,net framework 2.0 ,so if i look to ,net framework that i have in my computer i see 1.0 1.1 2.0 3.0 and 3.5 so my question is is VS 2005 automatically use the latest version of framework in my pc or i should do it manually ,and if manually how i do it?
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