I'm writing an application with various MDI child forms. In the Closing event of many of the forms, I have code that asks the user whether he is sure he wants to close the form, because it contains unsaved data. If the user clicks "No" then the code sets e.Cancel = True, which cancels the clos...more >>

I am using the Winforms Treeview right out of the toolbox with all the default settings. It looks very boring. What can I do to dress it up and make it look at least kind of cool? I remember hearing one time that one line of code would give it a Windows XP look and feel. But I can't remember...more >>

If you want to try a true cross platform development tool - REALbasic is giving away REALbasic Standard 5.5 to VB6 developers who may feel stranded by Microsoft's abandonment of VB6. It's still got a lot of growing to do, but if the idea of writing an app that will run on Windows, MAC and L...more >>

Some of the eagle-eyed amongst you will spot this as a direct follow on from my earlier post about critical timing in .NET. I want to use a ListView to display my output (instead of the sluggish RichTextBox), but it flickers madly when I update it. There have been numerous posts about this,...more >>

Hi, Is is possible to display a form that slides up from the system tray like that of MSN Messenger? I have tried the AnimateWindow API and the various flags (blend, roll horizontal, roll vertical) work but the slide flag doesn't, it just displays the form as normal/instantaneously. I trie...more >>

Hi All, I'm having a problem with a VB.NET project that I'm building in VS.NET 2003 (7.1.3088). As my project has increased in size (the executable is now about 2.5MB), I am experiencing a lot of instability in the IDE. I have been working on this project for about 6 months now and have onl...more >>

Hello, i have a crazy bug on one Machine. My Application is running fine on 6 Workstations (XP an W2K) On a new one (XP) i will have a black box as cursor if i want to resize a listview (instead of east/west-cursor) plus the comboboxentries are not visible but they are there. The c...more >>

I have the following code for showing a form: dim frm as new myForm frm.ShowDialog (The Form Load Event is fired then I hide the form using Me.Hide when the X in the UR corner is clicked). 'Do something in code frm.ShowDialog (The Form Load Event fires again) Shouldn't the Form Loa...more >>

I have a system that is locked down so the user can not even use windows explorer. But I need to user be able to save a wordpad file to the hard drive. I want to assign a particular directory to save through the application. Do I have a way to write a notepad or wordpad app that can only sa...more >>

Hello. I have a question, did someone can convert from VB.NET source code to Delphi7 code? Dim n, x As Double Dim tab() As Double = {-3, 0.5, -0.05} ------------------------------------------------- Sub licz() Dim i As Integer x = 0 For i = 0 To 2 x = x * n + tab(2 - ...more >>

Hi All I have a requirement to create a window in which I can place a moving map. I also probably need to create the data points that go onto the map - airports, navigation aids etc. The whole thing would be based on latitude and longitude. I need to be able to react to a right click on the ...more >>

I use www.hardocp.com to monitor the rivalry between Intel and AMD, especially when I'm about to buy a new machine. They have a lot of benchmark data, but none specifically for a developer. I would like to find some Intel/AMD comparisons for - DotNet development performance - DotNet end-user ...more >>

How to check if the file, that i need to write to is locked, and if so wait some time then try again? ...more >>

Hi, Web sites, like Google, have the ability to remove certain common words from the users search. For example, if I were to type "php and .net", Google would remove the word "and." So, that brings me to my delimma. I'm using the Publishers database as an example. What I'd like to do ...more >>

Using VB.NET in VS 2003. This should be a simple routine, but it has me flummoxed. I have to compare strings in two text files: FILE1(srar) consists of lines of book titles. FILE (srac) consists of multi-line “book records”, separated by blank rows. The number of rows in each “book reco...more >>

Hi, I have a VB.NET form with several DateTimePickers on it. These have worked great for me until several days ago. All of a sudden they no longer recognize user input. So if a user enters a date (other than the default date) into the DateTimePicker, it shows the user that the value has ch...more >>

i must compare 2 files who are on two different pc i try to calculare "HASH" but is different beetween PC1 AND PC2.... I TEST THIS CODE : Dim _Sha1 As SHA1 = SHA1.Create Dim Fs As FileStream Fs = New FileStream(filename, FileMode.Open) Return BytesToHex(_Sha1.ComputeHash(Fs)) OR WITH...more >>

I am trying to change a colour of a listbox item depending on a value in a data view My fields in the dataview are ID Name idCat ListBox1.ValueMember = "ID" ListBox1.DataSource = dv1 ListBox1.DisplayMember = "Name" I have set the listbox drawMode to OwnerdrawF...more >>

Hi, I was trying to store the address of the my current handler for a particular event so as to simplify using AddHandler and RemoveHandler throughout my code. However, I cannot seem to get any kind of variable to except the data. When I tried a Long I got the message "'AddressOf' expressio...more >>

Hello Everybody, Question instr function will give you the first instance of the finding so EX: so your string looks like string1 = "testing>This is > just a test > testtesttest" instr(string1,">") so instr will give me a 8 as a return item i need to get the last instance Easy w...more >>

Trying to debug a vb.NET application, I set a breakpoint, then try to move forward from there. While this has worked in the past (I often did this back in VB6.0), now most often when I try to move forward, I get a NullReference exception, with the green arrowhead at the beginning of the code for...more >>

Dear All, I have a front end form which has a couple of dropdown menus which select data from the database based on the value selected, the stored procedure which the program accesses outputs diffrent columns when different values( currently 2) from the drop down are chosen. ...more >>

The Print() method used in my vb .net 2003 program abort with a "Descripteur non valide" and i don't know why. Following the part of my code : Friend WithEvents Papier As System.Drawing.Printing.PrintDocument Me.Papier = New System.Drawing.Printing.PrintDocument Private S...more >>

Hello All I am trying to convert a MS Access 2000 application to a VB application (Just Started Yesterday) I am using Visual Studio .NET 2003 utilizing Visual Basic .NET I think I have a good feel to what I have to do, but does anyone know of a GOOD white paper on what is involved, pitfa...more >>

Hi evreyBody: I set the text of internet explorer to www.yahoo.com by using sendmessage function and here what I did: SendMessage(hWnd, WM_SETTEXT, 0, "http://www.yahoo.com/") but i found that the Inerenet explorer did not navigate to the url that i set, some body told me to use shellex...more >>

One of the items in the help pulldown menu is a website address. How do I create a hyperlink to the menu item? Thanks ...more >>

Hi, My application have two threads that run at the same time. This is my code Public WithEvents tww1 As New ThreadWrapp1 Public t1 As New Thread(AddressOf tww1.Ask) Public WithEvents tww2 As New ThreadWrapp2 Public t2 As New Thread(AddressOf tww2.ask) Public C...more >>

Microsoft told me that it couldn't be done. Does anyone know if I can take the forms that I made in MS Access 2002 and put them in a VB.NET project? ...more >>

I've been working on several programs, without problems, but I just went to start a NEW project, and get the error: VC package not available or not registered And cannot start a new project. As I said, I can open anything currently in development, but nothing new. Recently I install...more >>

Hi We are working on a webservice application and are having some problems with the cookies and/or sessions. We have them working on our intranet but then its not working on the internet. We have been looking our asses off but can not find a working solution. the code we came up with is ...more >>

I have a lot of colors, fonts, etc. to set for rows and possibly columns, based on the information contained in the row and/or the selected row. A main one is putting a border around the entire selected row only. The border one does not seem to be simple thing to do by just setting a property of ...more >>