I've got a list box bound to a Datatable, like this: lstProjects.DataSource = m_oProjectSet.DataTable lstProjects.DisplayMember = "ProjectDesc" lstProjects.ValueMember = "ProjectID" I want to pass the ProjectID value (integer) of the selected item in lstProjects to another function. I as...more >>

Hello, When i try to run my VB application, sometimes i get Run time error '-2147024890(80070006)' : Method '~' of object '~' failed. I don't know why i am getting that error. If somebody could help me in this regard it would be great. Thanking you all in ...more >>

Hello. I`ve got one question. Can anybody write me where can I find some information about REPORTS?-datareports, how can I make it, save.... Thank. ...more >>

Does anyone know of a way to get the URL for an Internet shortcut given that you have the name of the underlying file. For example, I have a shortcut pointing to http://www.yahoo.com stored on my C: drive as: c:\yahoo.url. Within my program, I already know the filename, but I can't seem to...more >>

Does the ability to document code with xml exist for VB like it does for C#. I haven't found anything that mentions it. ...more >>

Is there any way to tell a Windows.Forms.PropertyGrid to update the values for the properties that it is displaying? I am having trouble getting the PropertyGrid to update when I make changes to the SelectedObject's properties outside of the PropertyGrid. If I use the PropertyGrid to cha...more >>

I get an exception when attempting to open a form in design mode if the form inherits from a form that is declared as MustInherit. For example, if I have: Public MustInherit Class TestFormBase Inherits Windows.Forms.Form '...Normal Windows Form Designer generated code here Public Mu...more >>

Hi, I'm a newbie in vb.net. I have to send to a printer a file that need to be printed. My problem is that I don't know which kind of document is.. I tried to read the file with a BinaryReader but once I have read the file ( a doc file or an xls or a txt or a psd or another format) how can I say...more >>

Hi, Could you please take a look and tell me what this means? Cor has tried to help me, but we haven't found it yet. Everytime I run this code, I get an exception error. Here is my code: Dim connStr As String = "Provider=Microsoft.JET.OLEDB.4.0;data source=" & Me.txtFile.Text Dim SQLs...more >>

Is there a shorter way of referring to another forms controls/events than creating a class hold forms, adding a form item each time a new form is loaded, and then looping thru the class of forms to find the reference? Like "friend", rather than like below: Public Class frmMain Private Su...more >>

what the kosher way of vreating a tcp client/server app in .net? can anyone recommend a good in depth tutorial? currently im using a TcpListener but i cant get a remotre address from the TcpClient's it returns Stephen ...more >>

When my applications hit certain types of errors, it shows me a box that says if I enable JIT debugging in the machine.config file, the code will break into a debugger instead of showing me the dialog in question. My machine.config file *does* have jit debugging = true. Just how stupid am I?...more >>

If I'm using the VB.net compiler from *commandline*: 1. How do I specify references to other dlls 2. Start up method Thank you.... ...more >>

Hi Guys! How to capture output of a console based program and display it on Windows Forms applcation. Thx Anoj Kumar ...more >>

Hello, I'm adding a logging capability to error handler routines for troubleshooting (using vb.net) and had just recently come across a way to programatically determine the name of the subroutine or function. For example... Private Sub SomeRoutine() Dim strRoutineName strRouti...more >>

I am assigning a string variable with my sql statement getting the item from a listview filled from a database. I am getting an error saying that & is not defined for types 'String' and Systems.Windows.Forms.ListViewItems. I am using an index of 0 because the value I want is in the first col...more >>

in VB .net how will an event procedure instantiate a new object with a constructor call and then show the main form again? i am lost, any help appreciated, thanks portroe ...more >>

hi, how do I make keyboard & mouse temporary not response to desktop ...more >>

Hi Folks, Does anyone implement an application using vb.net and MSDE 2000? or anyone can help me, please? Can I use in my pc with sql2000 and vb.net to create the all application and them create an MSI file and install the application in the client pc but including MSDE 2000 into the setup? Th...more >>

Dim SysInfo2 As System.Environment Dim OS As String With SysInfo2 Select Case .OSVersion Case 4 : OS = "Win NT" Case 5 : OS = "Win 2000" Case 6 : OS = "Win XP" End Select End With ...more >>

I'm looking for an example on how to implement floating/dockable windows using either VB.Net (preferred) or C#. I've searched gotdotnet, MSDN and Google but wasn't able to find an examples. I was wondering if anyone knows of any? TIA, Richard Rosenheim ...more >>

I get the following error (see stacktrace) while loading an XMLDocument. The document is huge and it has PI's created from Arbortext's editor. Works fine when I use MSXML2 to load the Document. Fails only on .NET XMLDocument.Load(). Document loads on IE, XML Spy etc. without a problem. ...more >>

Has this newsgroup become very quiet lately? Regards - OHM ...more >>

Hi! I have a specific problem - I need to take some informations from a .txt file from another computer... I use OpenFile and the program runs perfectly... But when I run it second time I get an error... I'm unable to give it characterist because I have to run the program on a computer without ...more >>

I seem to be having a problem parsing an XML string and have not found a good reference to assist me. I have XML strings stored in a database such as: <qMultipleChoice> <qText>My distance learning experience was positive.</qText> <qChoice>StronglyDisagree</qChoice> <qChoice>Somew...more >>

Hello All - Ive got a datagrid that displays results of a user search. How can I show the datagrid even when no results are found? I.e., and empty datagrid? Right now, it disappears in this case. Thanks. Dave...more >>

"Object reference not set to an instance of an object" is the error I got whenever I run a code that has the following. It crashes when Itry to assign Bob with the sysInfo1.OSPlatform Dim SysInfo1 As SysInfoLib.SysInfo Dim Bob As Short ...... Bob = SysInfo1.OSVersion ..... ...more >>

I'm trying to use a template form I created. When I add an inherited form to my project, I get the error: Object reference not set to an instance of an object. when the inherited form is displayed in the designer. Last week I used the same template and didn't have any trouble creating in...more >>

I tried to run this code which I found on the web. But it always crashes. It shows SysInfo1 is Null ...object refernce ..... I tried to add refernce ( Microsoft scripting runtime , Interop.SysInfoLib...), but every time it reaches this section the program crashes. Can somebody please ...help m...more >>

How is it possible for me to completely remove the icons in my child forms ? Thanks in advance Regards Steve...more >>

I will need to load data from a datatable to a datagrid several times. How do I clear the contents of the datagrid before loading the contents into the datagrid ? ...more >>

hello, friend I want to Alignment my header (row=0) of the column This is my code that does Alignment on whole column but I would like only the header text Dim grdColStyle1 As New DataGridTextBoxColumn With grdColStyle1 ..HeaderText = "pub_code" ..MappingName = "pub_id" ..Width = 1...more >>

in VB. net how do you populate a combobox with items? thanks portroe ...more >>

DoubleClick seems to work OK with a ListBox. However, with a ListView I never get the event fired. I looked at both the LIstBox and ListView events and neither lists the DoubleClick??? But IntellSense gives it as an option for both?? Any enlighten comments? Thanks, Cal ...more >>

Can someone help me convert C# to VB the code following my signature? The main problem I face it is event handlers mapping to delegates Thanks -- Ceers, Crirus ------------------------------ If work were a good thing, the boss would take it all from you ----------------------...more >>

hello, I am trying to insert into an access database using vb.net. I tried to use DAO, but I found out that it is no longer avaliable. Next I went to oledb and I am now getting an error saying that one or more of the required fields are missing. The only thing is, there is only one ...more >>

Hi, All. I have problems with a listview control. Hopefully, I am at the right usergroup, otherwise, I apologize. Now, I'm finishing off a project where the main interface is a tree view an two listviews. I would really like to complete my design with a background image on the main lis...more >>

I am converting a VB6 App. In the VB6 app, I have a Type structure of about 30 elements (mixture of booleans, integers, strings and some doubles), in an array of say 20 to 100+ records. The size of the array doesn't change that frequently, so the speed of inserting and removing records i...more >>

I am looking for .NET (VB, ASP and C#) development standards in term of code style, Naming conversion, code documentation, etc. If you know of this kind of document or you can share the one you are using it will be helpful. Thanks Yoav Shtainman ...more >>

Hi, I'm writing a program using VB.NET that needs to communicate with a DOS Pascal program than cannot be modified. The communication channel is through some file databases, and I have a huge problem writing VB Double values to the file so as the Pascal program can read them as Pascal Real val...more >>

Hi, in VB6 I formatted gridcolumns like this : If UCase(oRSOverview(Ix).Name) = "KBINDEX" Then Me.GrdOverview.Columns(Ix).Alignment = 1 Me.GrdOverview.Columns(Ix).NumberFormat = "#,###,####,##0" End If 'MaxTsStats If UCase(oRSOvervie...more >>

I am trying to get data from certain columns of a selected row in a Datagrid. In VB6, I simply wrote: strVariable = DataGrid1.Columns(Index).Value what is the equivalent in .NET? Thanks, Elena ...more >>

I am having a problem with the VB6 "Recent" tab. When you are switching between projects and creating executables, you will notice that when you make a project (after the first project is made) that the "make path" is relative to the path you last created an executable to instead of the p...more >>

Hello all, I am re-writing an application in dot net, that I originally wrote in VB6. The snag I am getting into is at one part of the application setting the selected index of a list box works, however, it fails for another list box. Something is telling VB that I am casting. The error messa...more >>

Hi there I have one multiselect listbox, and get date from database using DataSet HolidaysListBox.ValueMember = "HolidayDate" HolidaysListBox.DisplayMember = "HolidayName" HolidaysListBox.DataSource = HolidayDS.Tables("dtHolidays").DefaultView if I use one selec...more >>

Please help! I want to create a user control that can act as a container for other controls (like a panel or a groupbox). The control will consist of a panel that acts as the container for external controls plus some other stuff. I hoped that all I needed to do would be to implement System...more >>

Hi, We are planning to migrate our vb6 components (published in com+) to vb.net dll. Front end (vb6) will remain the same. What are the advantages and disadvantages, do's and don'ts, best pratices to follow? Thanks and regards J Justin ...more >>

If I have a class with method Shared, when this objects are destroies what's happend with the objects Shared? How long is the lifetime of a function shared in the Class ? there are no instantiate tks Eduardo R Azevedo ...more >>

I have an XML file that I want to validate against an XSD and then transforma using an XSLT. I have no problem doing this with external commercial tools but how it this done from VB.NET code? TIA, Bill P.S. I looked at code samples on the Internet but they make references to "URL"s....more >>

Hi all, I think read somewhere (but I can't find it ... note to self: must get new filing system ...) that there is a workaround so that an app.config can have multiple keys with the same name or something of the like. What I require is the ability to point at a development or live database ...more >>

Hello all, I am using the currency manager in VB to navigate a dataset. I know how to use .position to loop through the rows, but what I want to do is *get* the position of the row I just added/updated, so that I can reposition the currency manager there sometime later. Seems like aft...more >>

This seems like a long shot, but I wondered if there's a way to loop over the values in an Enum. For example, say I have an Enum as follows: Public Enum statusValues Ready Running Finished Error End Enum '..... I'd like to be able to loop over and print out these values' name...more >>

Is there anyone who can help me with this: I have written a fairly complicated vb application of hydrological model that does a lot of number crunching. The model creates a set of object variables before entering the main loop and then main calculations are done within the main loop using the ...more >>

How do I search for a directory on a windows xp machine and delete the directory including all subfolders and files in them?...more >>

Hi everyone, I need the (i'm sure, very simple) code to get a form from a main menu. In VB6, all I had to write was FormName.Show. Thanks, Elena ...more >>

I have a program that has to run under the administrator account. But the use that will start the program has it's own (limited) account. How can I run a program under administrator? I'd like solution that is a secure as possible. So not using run as or something on command prompt....more >>

I need to write a program in VB.net that removes all network printers installed on several windows xp machines. How can I accomplish this?...more >>

Hi VB.Net Gurus. Initial MDI Child form loads fine. exp. Dim objChild2 As New Form2() objChild2.MdiParent = Me objChild2.Show() MDI Child unloads just fine. Exp. If e.Button Is tbbExit Then '' Me.Close() Me.Hide() ...more >>

today I invested in Infragistics Net Advantage 2003, what an utterly amazing piece of kit, want to make your applications look identical to Windows XP, Office XP or 2003, then this is the piece of software for you ! Simple to use creating breathtaking effects 10/10 Happy days are here ag...more >>

hello, this is to be a loaded question!! i do not really know what "managed code" means. can somebody explain it to me? AP...more >>

Hi, All I have following Webservice code rom a book, it works well, it returns a dataset contains customerOrderHis base on CustomerID. But I cannot display the returning dataset in datagrid. <WebMethod(Description:="Get an instance of the custom class " & _ "CustomerAndOrderHistoryInfo,...more >>

Hi all! I was just messing around with something that I wrote in VB 6.0 and ran into a problem. In case any you of you have read my post of boolean, its back to that same calculator. I wanted to design it in such a way that if a user presses enter then it takes it as the person has chosen ...more >>

Hi all! I've just started playing around with Visual Basic 6.0 and tried to make a calculator just for fun. Everything works except for the decimal button which has some serious issues!! Everytime I click the button it will display a decimal point on the screen which is obviously not what ...more >>

Hi I am new to VB.net and the .net framework! I have been coding for the last 7 years in purely COBOL and am now moving to .net na dvb.net. Just wondering if anyone can give me some advice on where the best place to start learning vb is! I am quite confident with the general overview...more >>

Is it possible to create a multi element property in VB.Net? Something similar to the "Location" or "Size" property. Each of these has two elements. I'm trying to create an IMAGE property that has four different elements. One for each state of a button. I would set the image for a normal bu...more >>

I've two forms and want do something like it: If Form1.MenuItemPersian.Checked THEN Form2.LabelCaption.Text="Something..." ' ... End If ...more >>

Hi all, I am trying to pass a timestamp value to an ADO field and I am getting the following error : -2147217887 Multiple step operation generated errors. Check each status value. I aasign the value as : ..Fields("FPTMSTMP") = s_timestamp1 If i assign s_timestamp1 = 2003-11-25 2:2...more >>

I have VisualBasic.net standard, (visual studio.net family member-version 2002). I have xp pc running office xp developer and I cannot install vb.net on this pc. When doing the component update I insert the component cd as required and always get the message that the cd is the wrong one. I've ...more >>

I have a form and a panel on the form that holds 24 user controls each one representing an hour (0 - 23). The panel is completelly covered with the user controls. I need to be able to select user controls and highlight them or select them (like rubber band) by mouse-down-drag-mouse-up events....more >>