Every so often I read something like: "use a defensive code technique like File.Exists instead of a Try and Catch because it's less of a performance hog" And when I program, I obviously have different ideas on how to code different sections. So how to I findout what's best from a performance ...more >>

Given a button name Btn_5 and Index=5 I want to do something like dim zz as string = Btn_??Index??.Text or given an array of buttons, do: BtnArray(4)= Btn_??Index?? Not necessarily that simply, but is there a way I can create the name of a variable at runtime? Thanks ...more >>

Given a button name Btn_5 and Index=5 I want to do something like dim zz as string = Btn_??Index??.Text or given an array of buttons, do: BtnArray(4)= Btn_??Index?? Not necessarily that simply, but is there a way I can create the name of a variable at runtime? Thanks ...more >>

I have created a program that allows for the automation of things in Word documents, like changing the values of DocVariables and the links to Excel Sheets. I did it using interoperoperatability, where, after adding a reference to Microsoft.Office.Core and a reference to Microsoft Word I declar...more >>

I have been beating this around for 6 or 8 hours now. I swear it used to work but I've changed quite a few things. I tried to revert to an earlier version but it does the same thing now. When I run my code in the GDI it runs fine. However, when I compile, install and run it I get an error. I am ...more >>

Hi, i would like to save the treeview data (nodes) into an xml file. how should i do that ? Thanks. ...more >>

Hi, How can i check is a form is disposed in framework 1.1 In framework 2.0 i can check Form.IsDisposed to check if a user closed the form ...more >>

How do I scroll to the bottom of RichTextBox Currently tried RichTextBox1.SelectionStart=len(RichTextBox1.text) RichTextBox1.ScrollToCaret This does not work. What is the best what to accomplish this Thanks, Dan ...more >>

We are designing a new UI for our app, and every screen will have print functionality. We don't want to use the bog std method of providing a print button. Has anybody got any good ideas please ? One idea is to provide an extra tab on every screen called Print Preview !! Any better ideas ? ...more >>

Is there a limit to how big a rowfilter on dataview could be? my = rowfilter is dynamically generated and if its get too big I get a = stackoverflow error other wise it works fine. Any direction is appreciated it....more >>

Hi, Developping in VB. Net 2003 I am displaying data for 3 months on a datagrid and wish to color columns for 1st month lets say in gray, columns for 2nd month in blue, and columns for 3rd month in green. How do I do that ? Can't see anything in tablestyle or under datgrid properties. A...more >>

Dear all, I have used Setup Winzard to deploy a windows application with crystal viewer to show a crystal report. I am using vb.net 2003. However, after I have installed the Setup in a computer with no vs.net and crystal report. The crystal report cannot be shown. The error message is : Ca...more >>

All, I'm trying to write messages to the event log and have everything working ok... almost. The message that I am sending via myEventLog.WriteEntry displays followed by "For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp". How can I change this ...more >>

From what I can tell on Microsoft's website the .Net framework's System.IO will not work with Windows 98. Is this true? I designed my app for use with Windows 2000 and Windows XP. However, a user is trying in on a Windows 98 box and having some issues. I have labels which are filled by reading fi...more >>

I don't know if this will be any use to anyone, but I just posted a small review of all my VB.Net books on my Blog. http://selfdeprecatingjournalism.blogspot.com/2004/08/my-visual-basicnet-librery.html...more >>

What happened to this very simple VB6 command? I am trying to make a button in a .net App the Default and I cannot get it to work, Why is this so Difficult, RY...more >>

value of type "Integer" cannot be convert to system.color Public Sub APIHighlight2(ByVal BgColour As Integer, ByVal FgColour As Integer) SelectionHighlightBackColour(BgColour) Dim rtb As New RichTextBox rtb.ForeColor = FgColour ===> error occured in fgco...more >>

Anyone know if you can add a background image to a datagrid, there is a property for colour but not for an image. ...more >>

Anybody had problems with this 'PrintHandler' class posted at http://www.thescarms.com/dotNet/PrintDataSet.asp I don't know if it was my computer or what, but I kept getting the blue-screen-of-death until I pulled the class from my project. -- Ken ...more >>

Does anyone know a good tutorial on how to create a windows tray application with a pop-up? Very much like MSN Messenger notification. Thanks a lot! ...more >>

Hi, I have a datagrid in a VB.NET form with a set number of rows that the user is required to fill out. But I don't want to allow the user to add or delete rows from the datagrid. The only way I have found to do disable this functionality is to set datagrid.ReadOnly or datagrid.Locked equal...more >>

VB.NET seems to be processing things in a different "order" than I'm used to. For example, I had a problem (I don't have the exact code handy anymore so it's just a "guess") where if I put the complete code in a single subroutine it wouldn't work but if I put the part that wasn't working in a su...more >>

What does it mean to add a control to a ListBox?? It inherits it from Control.ControlCollection Class . I can understand adding a control to a Panel but not to a ListBox. Thanks in advance ...more >>

This app I am working on generated an exception but I have only found it on his laptop. Other machines do not seem to have this issue. The exception is normally according to what I have seen on the net an ASP.NET exception. So why it is happening in Windows is a mystery to me. The ...more >>

For some reason I am drawing a blank on this, so I would be extremely greatful if someone could help me out. I am trying to get a MemoryStream out of a Byte array. How do I get it back out? I have a sub that calls a function: Dim bByte() As Byte bByte = ws.SQLGetUserDemographics() ...more >>

Hi guys A have an application for proccessing some sensitive data, which is most of the time displayed on app windows. I want after some time of inactivity the application to become locked - its windows to be hiden or something and a form to be displayed, so the user can enter his username and ...more >>

I downloaded it from Visual Basic at the Movies but there is a problem. I set up the following properties of the form... BackroundImage TransparencyKey = Color that needs to be transparent FormBorderStyle = None And it looks like that TransparencyKey color doesn't work. I set up a bitm...more >>

Hi, I created a base form and several forms inheriting from the base. I just found that all the forms need to be wider, so I increased the width of the base form. After recompiling, none of the inherited forms adopted this new width. Is there any way to force the inherited forms to reflec...more >>

Can someone reproduce the following error? I'm using the module at the bottom of my post to owner draw a menu items, I call the module from a form like this: Private Sub mnuOpen_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles mnuOpen.DrawItem ...more >>

Hi there Is there any difference I need to be aware when I create a class with only shared members & procedures when compared to a module (which is a shared class) ? I am asking this because I have seen at work a class that declares a Database connection as a shared member and I wonder if t...more >>

I am getting an error that "object no longer valid" at the point indicated in the code below - I am trying to build a table in an Access 2000 database using ADOX. Any thoughts on what might cause this? ==================== code ================= Sub CreateADOUnitsTable(ByVal sTablename As ...more >>