Update Queries In VB?
Nov 23, 2009
i have a form which once the user has entered their correct Account No they will access the jobs relating to their number. I now need to use and update query so that once I select yes in the Query handled box, after clicking the update button, this row will then be deleted from the table. Here is the code that I have so far:
Public Class Form1
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
[code]....
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Sep 11, 2011
I have a vb.net project where I have data loaded into a datatable in a dataset and have to do approximately 20 updates that are sql like. On this project, I don't have access to sql nor does the end user want to use any type of sql, sql express etc.
My question is, is there a generic way of doing this so I can reuse it. Was wondering if a dataview could be analgous to the "WHERE CLAUSE" and some type of delegate function could be the update function.
[Code]....
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May 29, 2010
I have a vb.net project where I have data loaded into a datatable in a dataset and have to do approximately 20 updates that are sql like. On this project, I don't have access to sql nor does the end user want to use any type of sql, sql express etc
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Jan 19, 2010
We use an ERP program in conjuction with SQL server and lots of tables that keep track of product records customers and all these kinds of stuff. I am building a fairly simple Warehouse Inventory Application that warehouse employees will use to count and inventory stock on hand from products around the warehouse and then check if any quantity errors occur between stock on hand and logistic quantities.I have created a custom Inventory table that I would populate with records like {stock_code, Description, Quantity_remain, quantity_avail}. Those records already exist in 2 different tables in my database. The aim is that I want my program to fetch daily 10 random codes from the stck table, and records about their quantities,bringing together the "columns" that my new custom table has +2 more editable columns: inventory, date, user with a query like this:[code]
As you can imagine my custom table contains the exact same fields as the query suggests + 3 more.I use the the stck table to fetch product info like its code,description, its group_code, categ_code, and then I outer join the stck_x_th that contains records concerning quantities remaining or available asociated with each product code and the "places" those quantities reside in the warehouse.Then, store them in a datagridview control, with only one editable column -inventory- (user and date columns are auto-populated with default values), and then when the user fills out the inventory quantites, I want to save the datagrid "as it is" in my new custom table.I am creating a databound gridview control using one table adapter (which refers to the inventory table). Then I add to my table adapter using "add query" the forementioned query with a fillby method to populate the Datagrid (and therefore my Table in SQL) with the exact same values my query returned from the different tables. But whenever I try to update the table concurrency exceptions raise.It works like a charm if I enter the values in the grid cells manually, without populating the grid control with the new fillby method my self but not if I populate the grid via a query and then hit update.
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Jan 29, 2012
I am using Visual Studio 2010 with NHibernate 3.1 and using Fluent NHibernate for mapping. It has been working well, and with the ShowSql enabled it shows all the select queries.
I have gotten to the portion of the program where I am performing some updates, but they don't show. At first I thought the updates weren't getting triggered even though i was using an explicit transaction - but the data was getting changed in the database. So - somehow, the queries are being executed, but not shown in the Output window of Visual Studio.
It turns out I was mixing two answers together. Log4Net is not needed at all to produce UPDATE statements from NHibernate in the output window.
Setting AdoNetBatchSize(0) in conjunction with ShowSQL DID resolve the problem.
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Jan 6, 2010
I am writing a message system on my server, the xml is something like this
<xml>
<entry>
<sender>[code]....
my problem now i guess is 2 fold, i wish to combine the first 3 queries into a single query and place in a list or a collection or is there a way to do this with a single query that will give me my desired result?
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Dec 5, 2010
I have a Access 2003 backend db and I'm using vb 2005 to connect to the db via conntection string. It works ok! I can see all the tables but only some of the queries. Why should some queries be absent? In 1 query I have a user define function which cuts up a string. I've created a new VB project with a new connection but the same result. I've compacted the database with not change.
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Jun 8, 2011
I am trying to UNION the two queries below without success.
Dim
ds1
As
New
DataSet
Dim
MyConnection1 As
New
OleDb.OleDbConnection(GetPOWERConnectionString())
[Code] .....
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Aug 3, 2011
I am trying to perform a search query using drop down boxes with a button named search. I want it to bring up the data that is searched for. I dont know where to start from, i have looked around for some coding and different ways to do it but they seem complicated, this is the bit of ASP that is my weakness, need some assistance and guidance. below is the code for the page;
<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" CodeFile="ForSale.aspx.vb" Inherits="Users_ForSale" title="Properties For Sale" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
[code]......
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Feb 19, 2010
I'm trying to figure out how to do SQL queries towards an SQL 2005 Express server and format the return value to JSON. I got the queries working using this (perhaps very newbie-like) code;
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI
[code]....
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Aug 6, 2009
Where can I find informations on which WMI queries are in fact available for .NET interface through ManagementObjectSearcher. The command below returns exception for "Win32_LogicalDisk", but works for "Win32_Environment". Every reference in msdn directs to msdn library, which contains all Win32 and COM development classes (that seems not to be available from vb .net code):
[Code]...
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Nov 5, 2010
I have a form that will have at least 3 seperate sql queries that I want to have submitted with an onclick event.
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May 18, 2012
I've been going through a lot of forums and see a lot of mention of ADO.NET and how it's better to use. I guess because it's newer and being maintained with current times?I've done google searches for this, but every time I see different programming languages other than VB.NET implementing param queries with ADO.net, or it brings me to results that have oledb commands again.Is there a good ADO.NET for VB.NET tutorial with parametrized queries?
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Dec 14, 2011
finish my querie, it works for the first 2 rows, I need ti to loop through my dgv:
[Code]...
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Sep 22, 2010
I want to send the a vb.net application which will run some updates on the database. I have built the sql script files which i would normally run thru query analyser but that is not available thru MSDE.I know i can use OSQL or ISQL to run these scripts but i really want to run them thru a VB.Net application.here is the code i'm using which is generating an error beacuse i'm trying to execute more than one statement?
Dim connectionString As String = ' CONNECTION STRING IS HERE
Dim conn As New SqlClient.SqlConnection(connectionString)
Dim cmd As New SqlClient.SqlCommand
[code]....
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May 18, 2009
I am a beginner when it comes to VB express. I went to the FAQ and found what looked like the answer to my question in "Database - How can I put the value of a variable/control into my SQL statement?" which said I should use thecode ...... where Field = ' " & variablename & " ' at the end of the SQL statement
I am using a field defined as a nchar with 10 charecters and my variable is defined as a string. my field has been given the value "abcdefghij" so it is full to avoid confusion with spaces and even though the variable is identical and I have used the len command to check there are no hidden spaces etc. When I run the query I get no records selected. What am I doing wrong?. If I use Where Field = 'abcdefghij', ie specify the value in the SQL I get the correct records selected but this does not give me the flexibility I need
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Aug 24, 2011
I have a basic grid of Linq2Sql entities (frmList). I have a separate form for editing (frmEdit). frmEdit has its own DataContext (as that appears to be the recommended way). How can I tell when my detail form has saved changes?
I don't see a built-in method. I am considering raising an event on the detail form when I save the datacontex, but not sure how I consume this event on frmList, and I have a feeling these events are already created for me somewhere?
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Aug 2, 2011
We have a reporting system where in we are getting unexpected results:
1) The size of reports at different time of interval is different?
2) The reports are writen as pdf to a directory. When we have thousand of older unused pdf(which will not get merged) in the directory the Adobe Life Cycle(to murge the PDF) throws error.But when we clear the directory by deleting the old unused pdf, it works fine?
3) Some of the pdf that are rejected by Adobe life cycle may or may not be corrupted. Meaning they may or may not open up with Adobe Reader, manually.
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May 6, 2010
I have a data driven application in <acronym title="Visual Basic">VB</acronym> which works with an SQL Server 05 Database.Since this app makes use of many queries and commands, occasionally i'me getting a timeout error as the connection pool is full. So i figured that at a specifc point in time within the app,i'll clear the connection pools using the ClearAllPools method rather than increase max pool size.
I'm using the performance monitor on my XP development machine (NumberOfPooledConnections) however not once do i see the number of Pooled Connections reset to 0 even when that method is called.How can I determine that my solution is working (if it is) before I deploy the update?
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Apr 15, 2012
always had a problem getting my head around it. I don't have a very strong mental model of how the code flows. My main problem is i think i understand the syntax, but not really its application. Any links people found useful would be great.
Couple of questions. The code below doesn't make sense to me (written by someone else) the application is basically a csv reader, but manipulates the data.
Public Sub entryType()
[code].....
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Apr 23, 2009
I am using C# and MSAccess as my database.
Code:private void ExecuteQuery(string strempname,string strQuestion,string IndividualRating,string OverallRating, string Comment1, string Comment2,string Comment3, string SessionName) { string strQuery= string.Empty; try { strQuery = "insert into FeedbackDetails(EmpName,Question,IndividualRating,OverallRating,Comment1,Comment2,Comment3,SessionName)"
[code]....
so this actually opens and close connection for every method. but i need to open and close the connection only one time. so how to customize this code to achieve my need. now i am hitting database for 14 times in a button click as of now. instead i need to hit only once but all the rows has to be inserted in my database.i am using MSAccess as Database.
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Dec 4, 2009
Using parameterized queries with ms access 2003 integration. To search any data according to different criteria.
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Oct 11, 2010
Let's say I have 3 tables: carts, baskets and eggs where a basket can contain many eggs and where carts contain many baskets. Each basket has a foreign key that maps to a cart and each egg has a foreign key that maps to a basket.I need to return a table that contains these 3 columns:Cart Name | Count of Baskets in Cart | Count of Eggs in Cart.Each table is an EF and I'm using linq with VB.So far, I have 2 queries: one that returns the columns Cart Name and Count of Basket and another one that returns Cart Name and Count of Eggs. How can I combine these two result tables so that I get the results in one table?
Dim query1 = (From cart In myEntities.Carts
Where cart.UserID = TheUserID
Join baskets In myEntities.Baskets On baskets.CartID Equals cart.CartID
[code]...
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Jan 6, 2012
I have an application that works together with a SQL database. This database has more than 40 tables and my applican has to extract different situations from those tables.
I have predefined some queries for the situations that I know they need to be in the application.
The idea is that I need kind of a module in which an user can create his own situation based on the tables, views, functions and procedures that already exist in the database. Something like it is in SQL. There has to be a library or something which will read my sql database directly from my application and which allow the user to create his own queries and situations.
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May 18, 2012
I'm making two queries[code]...
How can I merge those two queries to have only one I can use as DataSource.
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Dec 5, 2009
How to use parameterized queries in vb.net? Because I always wanted to make a program that could read an ms access database and display results based on your query.
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Mar 15, 2012
I want to pass the below statement to a report..
select a.po_number,a.mr_number,b.item_code,c.item_desc,
b.qty,b.rate from po_head a,po_detail b,item_master c
where a.mr_number=b.mr_number and b.item_code=c.item_code and
po_number = ' & combopo.text & ';
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Jun 30, 2007
How do you query a Dataset with SQL queries? I'm using VB with Visual Studio 2005. I've got a large library of SQL queries I'd like to run in-memory on a Dataset.All the examples in the documentation show how to "query a dataset with code," but none show how to run a simple SQL query against a dataset. I've seen other threads that say you can do so, but no code examples. Can anyone provide sample code to show how you would run a simple SQL "Select..." query (using the same syntax you would use to query a database) on an in-memory dataset?
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Apr 5, 2012
How do I run Access queries from within VB? The queries have been written and saved in Access using SQL, and use a search-parameter (Team name) to return a single integer value (games won, points scored etc).
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Jun 28, 2010
is there a way to run a query that already exists in an access database?
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