[2008] Updating Multiple Tables From Single Form?

Jan 28, 2009

After making the changes or adding a record I use invoke childmethod from my toolbar to call these subs. The first table updates and adds, but the second does not. I have set all of my textboxes databindings and double checked them. I get no error, but it does not update the second table. What am I doing wrong?

Public Sub AddRecord()
'Clear out the input data fields on a new Add.
ClearInputFields()

[code].....

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VS 2008 Multiple Tables In Single Dataset?

Apr 6, 2012

I am a new user. Apologies if I am posting this in wrong place and also if it is repeated one. I have few queries:

1.Is it possible to store multiple tables in a single DataSet?

2.If yes then it is a good practice? or should i prefer having separate connection object, separate DataAdapter and separate DataSet for each of the table to be accessed? I am new to VB.NET and using VB.NET 2008 Express and MS-Access 2007 as backend for my project.

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VS 2008 Updating A Single Column, Multiple Rows In An Access Database?

Aug 25, 2010

I have an access table that I'm loading into a dataset, then I'm binding the dataset to a bindingsource. The bindingsource is the datasource for a datagridview. I can use a command builder to update the entire table, but I need to update all the rows (or changed rows) in specific columns. I have a column called "dPrint" which is Boolean. I'm not sure how to use the bindingsource as my datasource in an Update Command. I've tried this:

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VS 2008 Binding Multiple Tables To A Grid View Then Updating, Inserting Or Deleting?

Mar 24, 2011

How can I do this, this what I got so far.

Dim ClassID As Integer = 1
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Database

[code].....

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Querying & Updating Multiple Tables With VB 2010?

Mar 15, 2012

I've been searching all day about this and can't find a solution..I'm fairly new to VB and SQL Queries, so I apologize if I sound a little daft.Basically I'm working on a project in VB 2010 where a user can add new teams, players, also create matches between teams and record the score. I have done nearly all forms, but now I need to show data from 2 tables on one form and the method I used for 1 table doesn't work.I have 4 tables:team, player, match & matchdata and they are linked like this:

[Code]...

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Table Adapters And Updating Multiple Tables?

Apr 21, 2011

Using; - vb2008 Express, data on ACCESS 2003, objective; - to update a separate table not on the original query.From what i have gathered i need to add a second table adapter to make the changes to a related field in another table. Since i already have the 1st table adapter the second does not appear as easy as the second (dragn the data set over).

So i suppose i need to create the second table adapters programmatically? [URL]..I see that because they are not nested they need to each be declared.. right? If so that is where my issue lies. I'm having a problem with how to declare them both now that there must be two.

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Multiple Applications Updating Single Database?

Feb 19, 2009

I have an application which takes input on a local machine and sends it to a database stored on a server. I'd like to be able to deploy my application over a number of computers (all on the same network), all of them updating the same database (on the network server).First of all, will this be possible without putting together a completely new application to handle all connections to the database and sorting the entries?

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Web Form Is Not Updating Tables?

Apr 11, 2010

I have a web application and on page is an update page to update some profile information. Below is the code I am using to update the table. But I think it is wrong. Does anything stick out? The connection string works cause it is used to read the database to get the profile information, I just removed it due to it containing password/login info for the db.player is the class of properties that contains player information and ds is the dataset, but I would like to update the database itself online.

[Code]...

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VS 2008 DataAdapter.Update To DataTables With Multiple Base Tables (Joined Tables)?

Jul 12, 2011

have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:

da.FillSchema(dt, SchemaType.Mapped)
da.Update(dt) << This line
'da = dataadapter

[code].....

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Updating Two Tables Using A Databinding From Within A Form?

May 16, 2011

I have three tables Tasks, Notes & CallTypes Each item in Tasks and Notes has a relationship to CallTypes and my form edits work fine. However: Notes only belong to tasks, and when i update the note record we will need to change the CallType for the Task as well as for the Note and they could both be different.

I have the Notes working fine, but i cannot update the tasks. I have created a databindng on to a form from the datasources window. All the notes fields are ok and are working I then add the calltype field from the tasks, draged from the data sources window (i dont want all of the tasks fields, just the calltype).

The code does not through up errors, but when i save the form it only updates the notes and not the tasks.

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Real Time Form Updating - Keep Single Threaded - Ongoing Maintenance

Dec 14, 2009

I have an app that I'm trying to keep single threaded, mostly for reasons to do with simplicity of ongoing maintenance. I've structured it so that I can eventually multi-thread it if need be but I'd rather not at this point. It's semi-real time and does perpetual looping to display a number of different graphs and do various work with both the graph display and the work being hosted in their own respective objects. If you're familiar with the Windows dispatch manager it's that general paradigm run synchronously. And yee haw, it pretty much works at this point and runs fast enough to meet requirements by a happy margin. I have a cosmetic problem that I'd like to solve if I could. When I left-click and move any form around, my graphs stop updating until I release the left click button. I was thinking about a doevents somewhere in the click event catalog.

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MDI Single Form Or Multiple Forms

Mar 7, 2010

I've written an application with about 30 forms and am almost ready to publish, my biggest concern though is that i'm not sure if its a normal thing to do having all these forms and hiding, disposing and showing forms throughout the use of the application.I've toyed with the idea of converting to a MDI Child / Parent interface as well as having one form with lots of subcontainers that are hidden and then hiding / showing them as the navigational buttons are shown.Ive worked on this application for about 8 months now, but would be happy to rewrite the interface and appearance of it if i know that it is not generally an acceptable practice having forms flashing open and closed while navigating through the application.

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Single Form With Multiple Instances

Aug 12, 2010

I have a form which displays temperature and humidity data for a device in the field. I have multiple devices. Rather than creating a separate form for each device, obviously it is much better to have a single form that I instantiate, pass data to, and display. The devices are listed in a treeview, and when the user double-clicks the node, I create an instance of the form, pass the device's data to the instance of the form, and display the form. All of this works perfectly. However, I have a challenge: If the form for a particular device is already open, I don't want another one opened when the user double-clicks the node.

However, whenever I place logic in the program to check for the existence of the form and only allow another instance to be created if one doesn't already exist, it prevents me from creating a form instance for any other device that I may wish to view, simultaneously. So, I have a dilemma -- allow the user to display the data for multiple devices, including allowing multiple forms to be open for a single device, OR only allowing one device to be displayed at any given time.

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Multiple Instances Of A Single Control On A Form

Apr 6, 2012

I've got two sets of lists with nearly 800 items that I need in 32 different drop down comboboxes (before you ask, that is required and it can't be simplified). Understandably, populating each of them slows down the creation of the form. This happens to be a child form that these drop downs are on and there could be more than one child form displayed. I've assembled the lists in List(Of String) objects and set each of the datasources of the comboboxes appropriately, but it still takes several seconds for them to populate and display for the first time. This is also problematic if the datasource gets updated (items removed, added, renamed) because I have to wipe out all the items and create the list again in all active instances.

[Code]...

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Binding Multiple IDs Into Form With Two Parent / One Child Tables

Apr 3, 2009

I am very new to vb. I have to create a registration form based on the a complainant form and offender form. Complainant form fills out, take the complainant_ID and parse it to registration form to load. Now when the registration form loads, it has registration_Id and complainant_ID, fills out necessary info and add an offender from the offender form and pass back the offender_ID to the registration form..now on this registration form, we have registration_ID, complainant_ID, and offender_ID..complainant and offender can have more than one registration..

Table structures:
Complainant table(complaint_ID, last, first)
Offender table(offender_ID, last, first)
Registration table(registration_ID, complainant_ID, offender_ID, type, desc)

What I have done so far:
Using separate dataset for each form. Complainant/Offender/Registration form load and save fine. But I do not know how to bind these Ids together so they stay in sync.. What I mean, when I add new complainant, take the complainant_Id, parse it to registration to create a new registration for that particular complainant, and also add an offender to that newly created registration, and pass offender_ID back to registration form. I am using visual studio 5 and sql express..

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Insert Into Multiple Tables In Windows Form Application?

Jan 11, 2011

i am using vb.net(2008) and MS access as my database.[CODE]...

now i want to insert into these tables. how can i do that? i know how to insert into a single table for example listed below, so how can i modify that so that i can insert into multiple tables[CODE]...

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Create Multiple Reports With Single Entry Into Form In VB2005?

Dec 13, 2011

I have to prepare about 125 or 150 Loading Slips for various Mines to move carting to our various Factory daily into Windows Form of ERP System.

Just like here: Date:18-12-2011, Requirement No.001/11-12, Mines No.OP-128, In Charge Name: Karsanji Plot=0,Satta=0,Dump=6, Transporter:Ghanshyam Roadlines Destination:Madhapar Here Some Button to generate/modify records: Add,Edit,Save,Delete,Previous,Next,etc If I distribute 15 trucks for Ghanshyam Roadlines to move carting from OP-128 to Madhapar then I will have to entry 15 times into Windows Form of ERP System for creation loading slips numbers from 1 to 15. Here all my data to input 15 times into ERP is same, so why is it not possible to create multiple reports with single entry form?

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VB Memory Usage - Open The Form That Is Linked To Multiple Tables - It Jumps To 157 Mb?

Aug 1, 2011

I have an VB application that I developed in Visual Studio 2008. The back end is SQL. Application stores quite a bit of information and gets updated daily by users. It also connects to AD to get u/p, adds new accounts in AD and adds mailboxes. Users connect to it through Citrix. We noticed big spikes in memory usage. The executable itself is less than 5Mb; if I run it and it opens main form - memory usage jumps to about 19Mb, open a report - it jumps to 80 Mb. If I open the form that is linked to multiple tables - it jumps to 157 Mb. Once users start pulling new information in, update it and connect to AD or Exchange - it could jump to 250 Mb. Also noticed that if user with read only rights has application opened and idle - memory usage constantly changes with a pattern
like 17Mb - 19 Mb - 15 Mb - 17 Mb and so on. This user wasn't even using computer at the time. In general - what could cause such jumps in memory usage? What is the best way to prevent it? On the server we have Windows Server 2003 SE

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Is Running Multiple Threads Faster Then A Single Thread On A Single Core Cpu

Dec 23, 2009

Say I have a code with 3 methods that do some pretty intensive work. Would executing these methods on 3 seperate threads be faster then executing them one after the other on a single core cpu? And what if it's a dual core or HT?

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How To Save SQL Server 2008 Multiple Tables

Feb 28, 2011

I have a select query like this. But from the below codes, I cannot update t2.unit_price in the same SqlDataAdapter

My Codes :
Dim MyQuery1 as String="Select t1.item_id,t1,group_id,t2.unit_price from Table1 t1 left outer join Table2 t2 on T1.Item_ID=T2.Item_ID"
Dim DAp1 as SqlDataAdapter,Ds1 as New DataSet
Con.Open()
DataAdapter1=New SqlDataAdapter(MyQuery1,Con)
DataAdapter1.Fill(Ds1)
[Code] .....

From the above codes
Dim Sav1 As String = "insert into table1 .........."
I don't know how to mention table2 also there ?

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VS 2008 - Updating Multiple Rows All At Once?

Dec 30, 2009

I'm trying to learn t-sql and my reading material all say to update all the rows at once instead of processing row by row. How would I go about doing that if I'm using object data source? I can see how I would do it if I'm using a dataset/datatable, but if I'm using a List(of object) as my data source for a datagridview, how would I update all the rows in one go?

For example, let's say
Business layer - I have a Person class with generic properties (name, age, gender, occupation, etc.)
Database layer - I have a method that retreive all the rows in my Person table, and return it as a List(Of person) to be used as the data source for my grid view.

I make a bunch of changes that affects multiple records, and instead of having a button on each row in my datagrid that update that specific row, I want an "Update" button that update all the records.

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VS 2008 Have Multiple IF Statements In A Single Button

Mar 10, 2011

I am just starting to learn the visual basic language so i am trying to make a simple application where a user can put in it's first and last name or else the application exists.

I manage to do this fine untill i get to the point of ending one if statement and starting another in the same button..

(in the form i have button1, button2, label1, label2. Button2 is only a "quit" button)

Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

[Code]....

What happens when i run this is that i can put in the first name but then when i click yes the application closes.

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VS 2008 Updating SQL Database From Multiple Threads?

Oct 28, 2009

Is it safe to update an SQL database from multiple threads at the same time? I have a method which runs on up to 25 thread pool threads at the same time and it attempts to write to a text file and update an SQL database - I assumed that writing to the file would not work properly if all threads tried to write to it at the same time, so I have used SyncLock for that part of the method. Just wondering if I need to do the same thing for the part of the method that updates the SQL database? or is the framework (or SQL server) smart enough to either execute multiple update statements on the same table at the same time without a problem or queue them?

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[2008] Multiple Lines Of Txt File -> Single String?

Feb 26, 2009

I have a *.txt file which contains instructions and data, with its own comments (preceded by ! ), blank lines, and each instruction begining on a new line, but occassionally using two lines. Each instruction consists of several feilds seperated by a TAB. Finally each instruction ends in a comma. Only a few different instructions are there (10 different ones) but there are many of each. Spanning a good 2500 lines. Comments and blank lines are obviously of no interest to me. I merely need to read the instructions and the data that follows it.

Now, I have successfully used 'System.IO.StreamReader.ReadLine' to go through it line by line, picking out lines begining with certain strings (first 3 characters of a known instruction). All good, I can 'lift' out the lines of interest and store them, for them to be split up later (seperating their fields into instruction, data, etc..) and then into an array.

The problem is, since some of the data fields in these instructions are so long, it spans two lines, before it ends with a comma. Using the above method, I end up with two array entries for a single instruction, since I have stored individual lines rather than a complete instruction. The only similar situation I can tihnk of to explain this, is to pick out sentences in text, and store each one in a string. Of course these end with a period (full stop) but span two or more lines.

I am hesitant to post an example, since its formatting is rather strange, but it is generated that way from 3rd party software, so I cannot change that for my software application.Perhaps there is no 'graceful' way of doing this, meaning I would have to find a way of 'adding' the second line of the instruction, to the string of the first line. Or perhaps reading each line character by character, literally storing every number/letter until I reach a comma.

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Update Two Tables By Single Query?

Jul 28, 2011

I want to update two tables by single query

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Updating A Single Row In A DataGridView?

Feb 3, 2009

I have a DGV with a single row that I want to update with new data in a timer. What is the best way to do this? Would I just update each cell in the row individually when the timer fires?

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SQL Performance Timeouts - Adding Multiple Rows In Multiple Tables In The Database

Sep 12, 2011

I have a vb.net web application and when a particular function runs , i get data timeouts in the rest of the application..(ie..row not found errors or column does not belong to table but it does) The function is adding multiple rows in multiple tables in the database and is running in a for loop. It seems to be all SQL related but I am not seeing anything in the error logs in SQL or in the application Right now I am assuming it is memory related where to start note..the for loop will be replaced with a bulk insert but right now I jest need to resolve the issue of the timeouts

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.net - Windows Forms In VB Updating Two Tables?

Apr 18, 2011

I am creating a form in VB to enter customer sales invoices and need to update two tables i.e. InvoiceHeader and InoviceDetails. The Invoice details can have more than one line for one Invoice header. I was wondering if there is any thing like Access subforms or how can I update both tables through an SQL statement.

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Updating And Linking Tables With One Foreign Key

Sep 10, 2010

I have a Database with the following tables, PolicyHolder, Beneficiary, FinacialDetails, Gender, Nationality, Relationship, Income. They are all linked by ClientID primary key of the PolicyHolder table.

When i'm adding my data in the Beneficiary table using a DataGridView i get an error when im adding the second entry saying - FK ClientID already has a value and this value cannot be duplicated. I want the FK ClientID value to be saved on every record i enter under Beneficiary.

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Updating Data In 2 Tables In The Database?

Mar 9, 2010

I'm Using vb 2008 and an access DB.I have 2 tables in the DB which is transaction and products.When a Customer Buy product the transaction will record and the stock of that product will deduct accdg to the quantity bought by the customer. Myproblem is products table didn't update. Stock of that product still didn't change.

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