Forms :: DoEvents Or Update GUI While Database Query Is Running

Aug 11, 2011

I have an application that performs database queries using "Imports System.Data.SqlClient". I want to display an animated GIF on the taskbar which spins while the query is running. However, during a query the application simply hangs and does not update the GUI until the query has finished, at which point the spinning icon is set to invisible anyway. Is there any way to force the GUI to update while the query runs?

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Running A Query, Getting A Value Then Update Record In ASP.net (VB)?

Jul 14, 2011

I've been using Classic ASP for years and just switching over to .net. So far, I'm not having much fun, but I'm trying and I'm not going to quit. One of the small pieces I am struggling with is running a query then, updating the record.

Set objRS = Server.CreateObject ("ADODB.RecordSet")
ConStr = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=G:InetpubwwwrootTestPageTheDataTestData.mdb;" & _

[code]....

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After Running Insert Or Update Query, Need The Last Inserted Record And Compare In .net Sql Server?

Mar 11, 2010

i have 2 queries in vb.net with an if clause -

if x=0 then
insert into table1
else
update table1

both queries have 5 fields. now what i want to do is after this insert or update takes place, i need to look at this inserted/updated record and compare it with another table (table2). Especially for update, i have 5 fields in both tables. if any of the 5 fields dont match with table2, then i insert a new record in table 2 which is the updated record in table 1.

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Forms :: Update A TextBox When Running A Thread From A Class?

Sep 15, 2011

I am having trouble accessing the main thread (my form) when calling thread is running in a class (or module). I have no problem to manipulate a data (in a thread) from a form, the textbox can be updated using delegate and invokerequired but it doesn't seem as easy when the thread that processes a variable is handled by a thread that is running in a class.

[Code]...

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Automatically Running Database Query In Excel?

Aug 31, 2009

Im wanting to pull some data from our Remedy Server every so often. Right now we're having to do it manually; Data > Import External Data or New Database Query. The connection is called AR System ODBC Connection Source. We have to log into the server and then it pulls the info into the sheet. Im needing even if have to setup a conection myself first to just have this conection run every couple or two and update the excel sheet. We're using excel 03, Remedy 7.

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Update Changes Made In Database On A Form When Running?

Mar 11, 2009

i have created a project with 20 forms in vb.net 2008

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Update Database When The Website Is Nor Running On Teh Browser?

Sep 1, 2009

I want to update my database( using a file from my root folder )every hour even when my web page /form is not openedin the browser..

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Database - Running SQL Query From Module With A Function Call From The Form?

Jan 28, 2010

I have a form set up where I want to run the function PopulateGrid on it's Form_Load event. I have initialized the DB connection as follows:

Private Sub Main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
LoadConfigFile()
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & config("DatabasePath") & ";")
cn.Open()
End Sub

Now, I want to run the PopulateGrid function directly after I connect to the database as shown above. I'm confused as to how I'd use a database query in a module when the database is initialized in my main form. Would simple setting the variable cn to public work?

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Running A Query In VB 2008 Using An Access 2007 Database (from A Textbox)?

Apr 1, 2010

i am relatively new to VB and i am working on a Visual Basic Program to build a Student Record Book where all the information is stored to an Access 2007 database. If the user is an administrator they will be able to add a new student, update delete etc. I managed to implement INSERT/DELETE/UPDATE functions and also a search button and they all appear to be working fine.

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C# - Stop Developers From Calling System.Windows.Forms.Application.DoEvents()?

Mar 15, 2009

We just spent 300 man-hours fixing a buggy application in the field. It all came down to calling Application.DoEvents (re-entrancy problem).This was not caught in design reviews, code reviews.The code was inserted two years ago with the first version; the application was always "flaky" but recent changes exposed the re-entrancy problems to a greater degree. This incident is the second time in our organization that Application.DoEvents caused failures and multi-man hours of debugging.It was discovered in this case by simply noticing the call,buried way down in a complex event handler for an asynchronous task.What do you suggest to prevent this issue from happening again:

Add checkin gates to source control?

Developer training?

Code Analysis rules (why is this not already a built-in rule?)

How to I enforce a coding practice?

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Update DataBase For Dataset Filled By Join Query?

Feb 26, 2012

i have a dataset that filled by this query :

SELECT Invoices.ID, Invoices.invoicenu, Invoices.pdate, InvoiceList.icaption, Invoices.icaptioncode, Invoices.ccode, Invoices.postedbill, Invoices.billnumber, SUM(InvoicesDetaile.price)
AS Tprice
FROM InvoiceList INNER JOIN

[code]....

a datagridview is showing dataset data and user check checkedcolumn of datagridview (postedbill filed) and after user mark a few rows , i want update (invoice table) in database .

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Update And Query And Erase In Database On Visual Studio Using Office Access

Oct 1, 2009

HOW TO update and query and erase in database on visual studio using officce access

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VS 2008 : Update Or Remove Record From Database : Syntax Error (comma) In Query Expression

Mar 17, 2010

When I'm trying to update or remove record from database I'm getting this error:

Syntax error (comma) in query expression 'Ime='Blagojce', Prezime='', Adresa='', Grad='', Telefonski_br='( ) -', Fax='( ) -', e_mail='''

Here is my connection string:

command.CommandText = "DELETE * FROM podatoci WHERE Ime='" & ime & "', Prezime='" & prezime & "', Adresa='" & adresa & "', Grad='" & grad & "', Telefonski_br='" & broj & "', Fax='" & fax & "', e_mail='" & email & "'"

where ime, prezime and so on are ListView selected items.

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Running A Query On Access From VB, Passing Variable Or Function As Query Parameter

Apr 7, 2012

I am trying to run a query an Access db from VB. The general query which I want to run is

SELECT * FROM Patient WHERE Patient.PatientID = ?
or SELECT * FROM Patient WHERE Patient.PatientLname = ?


I tried using an input box which captured the user input and pass that variable to the query, but that failed. Then I read about writing a function and using that, however, I keep getting an error which says Function not defined, but when stepping through the code, it seems to work. Here is my function: [Code]

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Forms :: Update Datatable To Sql Database With Filtering?

Dec 28, 2011

im using vb.net winform.i want to update a datatable to sqlserver. but before that. i need to check by comparing it to another datatable(same structure but contain new data). i need to insert new data only.

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Application Does Not Return From Call To System.Windows.Forms.Application.DoEvents?

Aug 2, 2011

I have a windows forms application written in VB.NET which scrapes information from serveral web pages (who doesn't right)? Anyway, I am having problem with one particular site where partway through the page navigation my application hangs. When I press pause (or break) in the debugger, it stops on a call to System.Windows.Forms.Application.DoEvents.

Resuming execution shows that it really is stuck on this line (it does not reach the next line of code). It also hangs about the same point each time I run it (at least its consistent). Since System.Windows.Forms.Application.DoEvents yields to other threads on the same processor and then resumes execution of the current thread, I think the problem is that some other thread is not behaving well (not returning from some event handling code). I thought Windows 7 was pre-emptive, which makes me
doubt that theory but I really don't know.

[Code]...

The program scrapes somewhere between 12 and 14 pages before it gets stuck on the call to DoEvents. Does anyone have a clue why this would happen? Why would any call to DoEvents hang?

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Update Particular Record Using Update Query In SQL Server With Program?

Dec 2, 2010

How to use this query to update record [code]....

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Update Query Executes But Doesn't Update

May 27, 2010

[code]The query executes fine but the problem is that when this query executes, it doesn't update the percentage field. What might be the problem?

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Update CheckBox In Update Query?

Jun 4, 2009

I'm using the following update method.. I'd like to be able to update the value of a checkbox into the existing query if possible. how to do this the correct way?

Public Shared Function SaveMemo() As String
Dim sConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and Settingsdiw07My DocumentsDaily Backupsphone memo backend.mdb"

[Code]....

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Asp.net - Update / Delete The Table Records In ASPNETDB.MDF In Single Update / Delete Query?

Nov 29, 2010

I want to know how to Update / delete the table records in ASPNETDB.MDF in single update / delete query ?

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Automate Running Of A SQL Query?

Mar 16, 2011

What should i research in order to accomplish this task?

I am using MS-SQL & VB.Net

I have a SQL table that stores startdate and enddate. I want to run a query on that table every 10 minutes in order to check if the enddate is greater than today and if it is I would like to add a 1 to another column if it is not I would like to add a 0.

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IDE :: Running Access Query In .net?

Aug 20, 2008

I have an access database and have a simple query in which i have 1 parameter.I want to run this query in vb.net and display the results in a datagrid or anything but in vb.net. I'm able to run the query but wht should i do to display the results of the query.the code i m using now is:

[Code]...

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IDE :: Stop A Query From Running

Jul 15, 2009

im calling a sp from vb net code that is rans for about 2 minutes and some times the user wants to cancel the query, how can i get the query id so i can sent the kill sentece?

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Running Same Query For Different Objects?

Jun 2, 2010

Running same query for different objects?

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Access Database And Using A Parameter Query With The LIKE Operator To Return All Rows That Match Query?

Apr 28, 2010

I am connecting to an Access database and using a parameter query with the LIKE operator to return all rows that match query. The string to search for is taken from a Textbox

sql =

"Select * FROM Allview WHERE Info Like" &
"*" &
CStr(TextBox1.Text) &
"*"
The query does not return any data in vb, but when run from access with same string, there is data returned.The connection to the database is done correctly, as I am able to return data with various other queries.

Partial code :
Dim
con As
New OleDb.OleDbConnection[code]....

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Correct SQL Query: Error "Microsoft Jet Database Engine Cannot Find The Input Table Or Query 'IF'?

Aug 27, 2010

The database:
"ID (Primary key)" | "Title"
0 | "title1"

[code].....

OK, before adding values to database, we should check if a row exists with this values :)TO do this, creating a Stored Procedure is a best way to deal with the database fastly.So... The problem now is, at the runtime, Miss OleDB throw this error:Microsoft Jet database engine cannot find the input table or query 'IF

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Correct This SQL Query: Error "Microsoft Jet Database Engine Cannot Find The Input Table Or Query 'IF'?

May 29, 2009

i should say hi experts :D . Help me with this pretty code :)

The database:
"ID (Primary key)" | "Title"
0 | "title1"

[code].....

OK, before adding values to database, we should check if a row exists with this values :)TO do this, creating a Stored Procedure is a best way to deal with the database fastly.So... The problem now is, at the runtime, Miss OleDB throw this error:Microsoft Jet database engine cannot find the input table or query 'IF

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Running A Query Using The Gridview Control?

Mar 30, 2010

I need to filter the database based on selected user input at runtime. I have a Drop Down List, GridView, and button on my webpage. The drop down list is bound to the database, it holds a list of product catagories. The gridview is also linked to the database with a query written so that the displayed data is only that which falls under the selected catagory. I want the query to execute when the button is clicked but i dont know and cant find such a command.

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VS 2008 Running Same Query For Different Objects

Jun 2, 2010

Currently my code looks like this:

[Code]...

Where x would be the numbers 0 to 100, or infinite I don't mind. I want it to check all the numerical values for each number. How would I go about doing this?

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DB/Reporting :: Error Running Access Query?

Jul 15, 2008

I have an Access XP database with two linked tables and a maketable query. I need to first run the Query through VB 2005 and then get the data from the resulting table created. But I get an error when I run the query as follows. I am getting the SQL Select statement from the SQL view in MS access after I create my Maketable query So it should be ok. I am saving the select in a hidden text box on my form.The query text :

SELECT [SWX-Seats].[Asset #], [SWX-Seats].Account, [SWX-Seats].Product, [SWX-Seats].[Seat Id], [SWX-Seats].[Serial #], [SWX-Seats].Qty, [SWX-Seats].[Entitlement End Date], [SWX-Seats]![Entitlement End Date]-[NS-Seats]![Exp Date] AS DaysDiff, [NS-Seats].[Exp Date] INTO

[code].....

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