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Re: Windows Forms ListBox Binding and SelectedIndexChanged Event firings. It would appear that the process of binding a ListBox to a DataSource and setting the DisplayMember and ValueMember properties results in the SelectedIndexChanged event firing for each of the property settings. How rem...more >>

I want to make a class that inherits datagrid but i want to make it so that only the properties and the methods that i make are available for use how is this done? WStoreyII ...more >>

Hi Guys how are you all ? OHM ...more >>

Hi, all... I am writting a program that need to change the objects backcolor(such as label, textbox). I need to change the color by using coding, not directly change in the property menu. Then, how do I code that? Another problem is how to apply the object color as the If statement condition i...more >>

Hello, I am looking for documentation on how to play an .mp3 file from within my vb.net application. I can play .wav files via the Playsound function but searching for .mp3 samples only turns up shareware libraries. I'd prefer to code my own rather than shell out $100 but can't seem to find ...more >>

Hello I'm very new to the .NET environment and am starting to learn on my home pc. I have some foxpro tables that I want to use. How would I go about connecting to the data? I am very familar with VB 6 and all versions of Fox. This .Net stuff is quite the different animal Any suggestions or ...more >>

Hello, I am trying to load the results of my SQL query into a combobox called cboTemplate. That works, but is there a way to select one of the items and do something with it? I tried: Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Butt...more >>

Hello Can somebody help me creat a tray icon contextmenu, so when you right click the icon the menu appears. Also, when an item is clicked on the menu, the tray icon's form will appear or disappear I have the following code for the problem but it does not seem to do much thanks Bruc Sub...more >>

Hey all you Guys and Gals, Hope somebody could suggest some software to me? Basically I`ve been learning VB.NET over the past 4 months, spending approximatly 4 hours per day learing 5 days a week. I`ve figured now i know the basics (Thanks to you guys and gals) the best way to learn more is...more >>

I have a program which goes across multiple forms. The first form has a listbox of current employees. On another form there is an add/delete list box for the same list of employees, which are taken out of a database (using oledb and access). What i'm trying to figure out is how to get the list o...more >>

Hello, here's the situation: I have a query that returns 2 columns of data from a table. This data is loaded into a typed dataset (DS). I display each column's data in a text-box in ASP.NET. Now, I dont want to have to save the DS or its corresponding dataadapter in session or viewsta...more >>

I was wondering if there was a VB.NET equivalent to the following C# statement: SomeType SomeVar = SomeOtherVar as SomeType; I know that in VB.NET you could have: Dim SomeVar As SomeType = CType(SomeOtherVar, SomeType) but this throws an exception if the cast fails while the C# exam...more >>

hello, I have developped a program in VB6 which use a MSFLEXGRID I must migrate it to VB.NET I have imported the component in my form1 I don't know how to make the relation between my access database and my msflexgrid (I DONT WANT TO USE A DATAGRID OR SOMEWHATELSE : I WANT TO USE TH...more >>

Why don't I have the Drag events (DragDrop, DragEnter, etc.) available for the RichTextBox control PS. I use MS .NET Framework 1. Amjad...more >>

What does this error mean? I recieve it when trying to do a "logonuser". I don't even know where to start and I am not tracking much down on the net. any help is appreciated Thanks, Brent ...more >>

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Hello All, I have a form that's ingerited from another form in the same project... when I open the derived form in the IDE I can edit the underlying code but when I try to open the form design I get the error: "An Error occurred while loading the project. Fix the error and then try loading...more >>

Hello there, I have a vb .dll file developed in version 6.0, I need it to run like a windows service, the vb .dll file access a mail box and intimates the user on reciving a mail and transfers the mail attachment to a predefined location, i have used COD 1.2.1. now when i use cominterop and...more >>

Interface Problem The following code in Listing 1, compile successfully, but if we change the class "CTest" as Listing 2, then the code is not compiled. Also if we change the class "CTest" as Listing 3, then code again compiles. Can any body explain it. Listing 1 /***************...more >>

Anyone know of any examples in VB .NET to interface with Paypal. Sending information back and forth? Thanks Tony ...more >>

XP Pro, VS 7 VB Why am i having trouble with fonts. I'm createing and aligning labels in the VS IDE and then I run the program and it all overlaps and not aliegned? I changed font in both IE6 and on the control to no avail. Characters seem much larger in IE. I don't want users to have to chang...more >>

Hello, I am trying to drag a file from Explorer to the TreeView control in VB.Net, but I have no idea how this will work, could I get the lines of code on how I can accomplish this please? Thanks in advance, any help would greatly appreicate. Wanda...more >>

I am trying to write a telnet emulator. I followed the example code for EndRead, but when it gets to the last line (in the code below) I get a NullReferenceException error. Any ideas? Here's the code: Private Sub myReadCallBack(ByVal ar As IAsyncResult) Try Dim myNe...more >>

Hi I noticed I keep running into the same types of errors when casting I have Option Strict set on too Here is the code Convert.ToInt32(e.NewGroupPath The DataTypes are defined as follows: Public Property GroupPath() As Integer( Member of: CrystalDecisions.Shared.TotallerNodeI NewG...more >>

Hola gracias de antemano; mi problema es el siguiente: Hago una carga de controles mediante un array en un panel, luego mediante dragrdrop los llevo hacia otro panel, El problema comienza cuando utilizo el metodo dodragdrop, anula los otros metodos y eventos del control. El control es un pictureb...more >>

I am working on filesystemwatcher and use to watch a folder to see if any new files have been created. If any new file is created then, i will open it parse it and save the parsed data into db. It works fine when the file is created for first time (Say a.x12 file is created on folder new and it ...more >>

Public Property TxtTabSpacing() As Integer Get Dim lTabPos(31) As Integer 'Max allowed is 32 tabs lTabPos = RichTextBox1.SelectionTabs() TxtTabSpacing = lTabPos(0) End Get Set(ByVal TabLength As Integer) Try 'Set a tab every TabLength Dim lTabPos(31) As Integ...more >>

In my application which connects to a database with three tables dynamically 1. Is it necessary to have more than one connection string every time I create a dataset? 2. Is it recommended to use more than one data adapter each time I query to form a dataset? 3. when do you close a connection? ...more >>

Hi all Any one know how to burn a CD using VB.NET? I want to write a small console application which will copy data from the staging area onto the disk, it's so we can automate a backup? Thanks in advance. Wayne Taylor ...more >>

I have three classes in my application, ObjectBase, Folder and Document. Folder inherits ObjectBase as does Document. I store common information in a table named 'Object' and additional information in tables named 'Folder' and 'Document' respectively. In the Object table, I have a field TypeId ...more >>

This code failed miserably. And the error shows on the ConnectionT.open() ans say exception occured in system.oldbb. ....... any help please Dim ConnectionStringT As String = "Provider=Microsoft.Jet.OLEDB.4.0;Password='';" & _ "User ID=Admin;Data Source= C:\temp\account.mdb;" & _ ...more >>

Hi! I'm working on a log reader and i access the logfile with a FileStream. If the logfile get's flooded it might be that the logfile is locked when i try to open it for reading. The Open method throws an exception. What i want to do is to check if the file is locked before i try to open it so...more >>

Which toolbar control would you recommend for a VB.NET Windows Forms application and why? Thanks! ...more >>

I have two separate Windows forms, frmA and frmB, both are MDI child windows. But frmB is also a "child" of frmA...at least conceptually speaking. So I want both frmA and frmB to share the same menu, is it possible to do this? So far, I have tried setting frmB.Menu = frmA.Menu, but that didn...more >>

Hello, I have a form called form1 and I load up a dialog form from it as shown below: Dim Myform As Form Myform = New frmOrderEntry() Myform.Show() I wish to run a procedure in this form called "RefreshGrid" once the frmOrderEntry form ...more >>

I need to create a form that the user place the UserId and Password, and next I'll check if is it right in he Server Domain? How I can do this?? ...more >>

I have used the ms comms control extensively in my vb6 prof. developments which I am in the process of converting to vb.net. However, I do not seem to find the comms control in the .net toolbar. How can I register this control in .net? ...more >>

Hi there Can anybody teel me how to make a search function like in MSDN or the other products of Microsoft What I mean is When we type a letter 'P', everythings that begin with 'P' will show up in the first line of the box When we type a letter 'Put', everythings that begin with 'Put' will sh...more >>

hello, I made a usercontrol, and I add it to my form at runtime. If my mouse enters that control, a sub has to start. But for some reason, the trigger doesn't work. When I enter the usercontrol with my mouse nothing happens. Can anyone please help me? this is the code: For Each oCard In ...more >>

I have a class that I would like to be able to loop through its properties and populate the value of the one I am searching for, in code Example The class has 1 read-only integer (A), 2 integers (B, D) and 2 strings (C, E What I need to be able to do is call a function similar to the one below ...more >>

I use the function below to send email from my ASP.NET application. When I last visited it about three weeks ago, it would display the mail message on screen and require me (the user) to send it manually. The sent message would appear in my "Sent" messages folder. Now, having made no changes...more >>

Hi I have some textboxs in from such as textbox1, textbox2... and one button. So I want to know when I click button, the forcuse be turn into the textbox1. Someone can help me?...more >>