I got a tables which got 10,000 records. user will input the invoice no as key. my strConnection = "select * from invoice_Table where invno ='" & (Me.txtInvoiceNo.Text) &"' " in my form, there are over 20 textbox. If i use databinding to bind each textbox. will it become slow ??? if i move the...more >>

I'm experimenting with Regular Expressions and Windows Forms. Frequently I want a value to be either a valid pattern or empty. For example a Zip code must be 5 digits or may be empty. I know that I can use the Regular Expression "\d{5}" to test for exactly 5 digits. How can I add the option f...more >>

Hello I have created a windows service to monitor a database, it starts some checks when a timer elapses. The checks send emails depending on their findings. My issue is that when I created a windows application it worked fine, however I need to use a service as I don't want to rely on a user...more >>

Hi I have a problem that is driving me crazy. I have two forms, both with tab controls. Multiple tab pages contain controls bound to a datatable. One form behaves correctly. The other form loses it's edits when you change pages. So if I modifiy an edit control, then switch tabs, when I come back ...more >>

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Hello, When I use Shell in VB.NET all works great. i.e. Shell("C:\Hogg.exe -n -pg") but when I use Dim MyProcess as Process = System.Diagnostics.Process.Start("C:\Hogg.exe -n -pg") I get an error that says it cannot find the file. I need more control over the 'Shelled Application' t...more >>

Can I force my page to do postback? I have a page that only have links, but I wish that every time I click a link that execute a function that I have in my code. I know that with simple links, that postback does not exist. I must have links and not link buttons, because I have to set the targe...more >>

I am writing an application to retrieve appointments from Outlook, I have the appointment items sorted by "Start" field and now I want to find the first record which's "Start" value is later than now (future appointment The relevant piece of my current code Dim oCalendar As Outlook.MAPIFol...more >>

I just put a simple exe out on the internet and tried to run it. All it does is manipulate its own images and respond to its own controls, but the darn thing needed FULL TRUST to run properly! Does VS.NET have some sort of method to spit out warnings when stepping outside of the trust boundrie...more >>

i`m trying ( :( to write an email app somewhere here i saw a link to Lesnikowski dll which is a nice pop3 client now i need something similar but doing the server work and 1 more question there will be like 50 cliens - should i use multiple threads or asyncronous operation or o...more >>

I am using an ActiveX control in a VB.NET application as there is no alternate .Net control available to me. The problem is that when I try to install this appliaction on another machine the DLL is not registered. The only way aound this that I have found is to build a ismple VB6 application pur...more >>

I'm trying to use shell to execute an old dos based program. This program takes a binary file and does internal processing and then outputs a text file based on the processing. I am choking on the spaces in the valid pathnames. Any ideas on how to convert from the long file name format to an 8...more >>

Hi I have a control that allows embeddable editors, so for example I can set a property of controlsEmbeddableEditor =me.TextBox1 on my form, no problem here - what I want to do is the same thing but from a string variable. i.e. I have 14 controls that have a name which is a permutation of 4 ...more >>

Hi everyone, I have a problem with error handling and wondered if anyone has managed to implement a global exception handling model. Is it possible to ensure that you see all exceptions before it becomes an unhandled exception. This is opposale to putting Try Catches around every statemen...more >>

I am developing a database app using vb.net and SQL Server. I am trying to come up with a way I can detect if the user has made any changes/updates to any data currently displayed on the form so that I can set a varible that I would check when the user closes the form to promt them to save their cha...more >>

Hi, we are trying to deploy .Net application on Win98 system. While it is run at WindowsXP (development environment) there is no problem with getting it started. When moved into Windows 98 system, it crashes with information entered below: Application has generated an exception that co...more >>

Does anybody know of a good place to find some code samples on retreving and posting data to web pages? I can get the response fine using WebResponse, but populating some textboxes and submitting the page using webrequest is what I am having trouble with. Thanks...more >>

Hi, I was wondering if there was a way to create (not convert) visual basic projects in visual studio .net that does not use the .net framework (i.e. a traditional vb 6 project). Thanks! -Mike ...more >>

I'm sorry to bother you with this question but it was either this or giving up and trying to go for a simpler solution (which I will if this is not gonna work out..) I'm afraid this is way out of my league but then again why not give it a shot... I've used the Pocket PC Signature Applicatio...more >>

Anybody have tutorials or links I can study to learn how to do telnet connections that are secure. ...more >>

Hello, Win VB6 i used doevents() to update my forms during a process, but for whatever reason this is changed in vb.net. Can someone help me with how this should work. Thanks, Edward ...more >>

Greetings, Ho do I get a handle to an application's instance in VB.net? Thanks, Jeff -------------------------------- Jeff Morhous Hi-Tech Metrology Products, Ltd. jmorhous@hmp-ltd.com *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...g...more >>

Hi, is there a method to move to the next record in a datareader? Kind of like the rs.MoveNext from VB6... Thanks ...more >>

Hi what is the esiest way to add preview to openfiledialog thanks all ...more >>

All, Is there anyway to inherit from an Enum and/or to add items to them outside of the Enum statement? Public Class Class1 Public Enum Test Value1 = 1 Value 2 = 2 End Enum End Class Public Class Class2 inherits Class1 'How can I add class2-specific values to the...more >>

Hello, I face a practical problem with encryption. I've read examples for encrypting a file with the DES algorythm. The algorythm uses a key and a IV value. Both are 8 bytes if I'm correct, and can be generated by the system or specified by me at design time. How can I then do DES encry...more >>

Hi, Similar to my last post on drag-and-drop, does anyone know of any good resources on how to create a good Undo implementation for an application. I've been wanting to include this feature in my apps, but haven't been able to find any good info on good ways to implement this kind of feature ...more >>

Hi, Does anyone know of any sources on where to find info about implementing drag-and-drop capabilities? Not just how to turn on the ability in contols, but good practices for formating the info? Eric Dreksler ...more >>

What happened to App.Path how do I get that info now? Thanks ...more >>

Hello I use the following code to populate a combobox Me.cbxPeerReview.DropDownStyle = ComboBoxStyle.DropDownLis With cbxPeerRevie .DataSource = dtEm .DisplayMember = "STR_NAME_F .ValueMember = "ID_USER End Wit Me.cbxPeerReview.DroppedDown = Tru Me.cbxPee...more >>

I am trying to learn how to deploy applications and I am having significant difficulty accomplishing this task. First, the application is run over a network Second, I have copied the bin directory to where the application should run from. Third, I have changed the local intranet security for al...more >>

Hi, Where can i find code examples of connecting with MQ from VB.net(not using msmq bridge) BR Oz --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.679 / Virus Database: 441 - Release Date: 07/05/2004 ...more >>

hi all, i have a master detail form. In the datagrid control i have the following code Private Sub dtgCobD_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles dtgCobD.CurrentCellChange Dim Val As Intege MessageBox.Show("Col is " & dtgCobD.CurrentCell.C...more >>

I have a program that exits just fine when you close it manually, but throws an unhandled exception when I try to log off windows. It suggests I enable the JIT debugger, but when I compile the program in debug mode and enable JIT debugging it closes fine, though the logoff process is aborted. ...more >>

Is it posible to code a simple web server in vb.net?(only get), i've seen samples in c#, but i don't under stand them kind regards Jorge Schrauwen...more >>

I'm trying to build a simple text editor in part of my app. Right now I'm just testing the basics of the KeyPress event handler. The code is basic...real simple. I'm just testing stuff - Private Sub txtConsole_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventA...more >>

Hi, I have a bunch of forms in a DLL that I call from my main application. The one form is a login form, and I have the tab order set in the order I want it (password box first, then ok button then cancel button then database selection combo box then user name text box, then back to password t...more >>

hi, I have some problem with redirecting input and output from a process. Situation: I have to use the Cisco Network Registrar (DNS And DHCP server) command line utility as redirecting its input and output so I can interact with this one. This utility is similar to ftp under a win32 console....more >>

Hi guys. I have two threads: a main thread and a background thread. Lots of stuff happens in the background thread that means I have to update several (lots) of controls on a form. It is quite tiresome to have to write code to call MyControl.Invoke for each control on the form, along with t...more >>

Returning parm data to vb.net from AS400 stored procedure This example loads a textbox which is used by javascript for error handling. First create the stored procedure on the AS400: CREATE PROCEDURE KBMCUSTOM/RUSECW55(INOUT :li CHAR ( 10), INOUT :pw CHAR ( 10), INOUT :dp CHAR ( 10), INO...more >>

Hi Can I write vb.net apps that would run on this device; http://www.xda-2.co.uk/under_the_bonnet.html If yes, is an emulator available? Thanks Regards ...more >>

I want to be able (at run time) to center a control (like a text box) inside a group box. Whats the best way to calculate this? Is there something in the framework that tells you the area INSIDE a group box? And how does one account for the wierd groupbox margins? (i.e. the top line, where the na...more >>

Hi, I have to write a little program, to enter and retrieve data from a database. The most important aspect is that the code is easy to understand, clear and organized, and easy to modifiy or expand. The program won't need much data and not any complicated calculations, so performance is le...more >>

I have created a data adapter (CheckVacationHrsDataAdapter1) and generated a dataset (CheckHrsVacDataSet1) in the form designer. What I would like to do is query this dataset, find the sum of TotalVacationHrs per EmployeeID, and put this sum in a text box. How do I load my dataset at runtime in orde...more >>

Hello I'm getting the above mentioned error in my applicatio I have a datagrid bound to a datasource like s MyDatagrid.DataSource = Mydataset.Tables(Order) - this all works fine However I have another field on the form which is a richtextbox and is bound to another field in the same ...more >>

I cannot get the following code to work when trying to download web pages through a proxy server: [1] Dim wrq as Net.WebRequest [2] Dim wrp as Net.WebResponse [3] Dim proxyObject as WebProxy [4] proxyObject = new WebProxy("abc-dc", 8080) [5] proxyObject.BypassProxyOnLocal = True [6] Globa...more >>

Hi -- I'm claiming once again that I'm new to this -- and I really am, it's just taking a long time to pick up what I need. I'm reading through Dobson's book on VB.net and MS Access. I can connect to a database as follows: Dim m_DB As New ADODB.Connection Dim m_COB As New ADO...more >>

I'm trying to figure out a regular expression that will match the innermost tag and the contents in between. Specifically, the string that I am attempting to match looks as follows: ....<table>...<table>...>Final<...</table>...</table>... I want to match: <table>...>Final<...</table> from t...more >>

I have a form with some textboxes, checkboxes, and comboboxes that are databound to the "Packages" table in a dataset. For Example: Me.txtFirstName.DataBindings.Add(New Binding("Text", DS, "Packages.FirstName")) and I navigate with statements like: Me.BindingContext(Me.DS, "Packages").Posi...more >>

Hi I've got a blob field in a database and I need to place it in an invisible textbox and then convert it to an image and place it in a picturebox. I know it sounds weird but this is the way I have to do it, my problem isn't converting the blob data to an image and place it in a picturebox, b...more >>

I used the following code but it does not disconnect the automatic dialup. Can anybody help Private Declare Function InternetAutodialHangup Lib "wininet.dll" (ByVal dwReserved As Long) As Lon Public Sub HangUp( 'To disconnect an automatically dialled connectio InternetAutodia...more >>

I need a little clarity in the NameValueCollection. Within the MSDN .NET 1.1 Framework help is says: "This collection is based on the NameObjectCollectionBase class. However, unlike the NameObjectCollectionBase, this class stores multiple string values under a single key." Wh...more >>

Hi there, I am still working with Access97/VBA (will change to 2003 soon). I built mde systems that use automation with excel and others. When I compile the mde it uses my dll versions and if someone else has a later version (Excel for example) errors occur. I've got no idea how to solve this on...more >>

Hi there I am still working with Access97/VBA (will change to 2003 soon) I use a lot of listboxes displaying numbers and they are always left justified. I'd like them to be right justified.. But I don't know how.. Sounds simple but I've never figured it out, most of the time too impatient and ...more >>

Hi there I am still working with Access97/VBA (will change to 2003 soon) I would like to find out how I know the location of a form. I use the Docmd.MoveSize to place my first form wher I want it in order to place a second form somewhere specific. I'd like to know the current position of the fir...more >>

I've been searching for a clue for this but can't find one. Is possible to create an aplication with something like: "Decompressing... x%" Where the x will be changing with the evolution of the decompression in this case. In this case I used decompressing but it could be anything like in...more >>

Hi, I have a large table in Word 2003 that has formatted text in the cells and wish to read and convert a cells formatted contents to html output via vb.net code. The formatting contains the following: bold text, italic text, superscript & subscript text, bullet points. The output html is then s...more >>