Sorry. The other post got sent before I was complete. Does the ValueMember property in the ComboBox work like the DisplayMember property. For example, if I set the properties: comboBox1.DataSource = dataSet1 comboBox1.DisplayMember ="Employees.LastName" comboBox1.ValueMember = "Employees.Em...more >>

I have a form that runs a batch task. (say every 15 minutes) When it is kicked off it connects to the DB and then runs through all of the things it is supposed to do. The length of time to complete these tasks is unknown in advance. If it finishes all of the tasks without error then the applic...more >>

Does the ValueMember property in the ComboBox work like the DisplayMember property. For example, if I set the properties: comboBox1.DataSource = dataSet1;comboBox1.DisplayMember = "Employees.LastName";comboBox1.ValueMember = "Employees.EmployeeID"; " ...more >>

Hi, I'm currently stuck with a big problem. I must develop a Windows service and an application to configure it and display what is happening. The problem is not really on the service side, but on the application side. I explain: The service is composed of a kernel dynamicaly loading plug...more >>

I need to get a pointer of a variable... How can I get it ? for example: Dim a() as CStructure Dim z as System.IntPtr z = ?????? Sushi ...more >>

Hi, I'm currently stuck with a big problem. I must develop a Windows service and an application to configure it and display what is happening. The problem is not really on the service side, but on the application side. I explain: The service is composed of a kernel dynamicaly loading plug...more >>

Hi there, Is there anyone knows how to make windows form datagrid that is bound to an array editable? How to catch when a cell has been edited? Thank you for your help. Nina...more >>

Hi All, I just wanna ask one simply question.. Is there anyone know how to calculate the output value from a string like that?? Dim strFormula As String = "20+30+(100+20+30)*0.1" Dim douOutput As Double douOutput = Function(strFormula) what can i do to calculate the dynamic formula ...more >>

Hi I have installed a USB-Cam on my system and would like to get a pic from the usb-cam in VB.NET? Can someone give me a tipp how to do? Thanks alot! Nijazi Halimaji ...more >>

I have a simple windows app. On the form, I have one panel which displays an image. I have a KeyDown event that I use to tweek the image depending on which keys are hit. ie. ctrl-D, ctrl-A, etc. Works fine so far. Now I've added a textbox (and there will be other controls) to the form, no...more >>

Dear all I would like to know how to refresh the coding which is generated by .Net when I put my custom control on the form. Since the setting of control may often change during development, I found that the generated code will not be updated if my custom control has been changed. And it seem...more >>

Hi I have an MDI application. I have a MDI child window within this application that shows another form using ShowDialog. This works fine, except that the final form shown with ShowDialog can't be an MDI child window, and so can appear outside the boundaries of the main window. I know I c...more >>

Hi Is there any way to enable/disable an item in a property grid at runtime? I have two properties that I am showin in a property gris and based on the validity of the first property, I want to disable/enable the second property. Therefore the user would not be able to set or change the v...more >>

I have a DataTable that I need to merge the 'lastname' and 'firstname' fields to be displayed in a datagrid. I know I can use the SQL statement to merge the fields into one, but I want to know if it's possible to do through the DataTable, DataView or DataGrid that I have already created to displ...more >>

I have generated a form that inserts travel information and I need to manipulate that info. All the info is now stored in variable and i need to generate prices... Its a little complicated cos there is not a relative price structure. Ill try and explain whets happening... variable1 - ei...more >>

Hi, I have a requirement where in I need to parse and get all the HTML and custom specific tags from the HTML page. I'm using mshtml and vb.net. One way i thought off was to use the regex functions. Can I know what is the best way to parse and fetch all the tags or if any one has worked ...more >>

All, When I use system.IO.StreamWriter to write append a string to file that contains the GBP pound symbol, I notice that it also appends an extra character before the pond symbol. Yet when I examine the string character by character in the command window, the extra character is not there. ...more >>

Hello, I have a set of class library projects that are used by a Windows application project. I would like to add forms that are specfic to those class library projects and instantiate them from the windows application project. Of course I can't add forms to my class library projects, howe...more >>

I'm about to begin porting a VB6 ActiveX EXE project over to VB.NET. This project (project "A") has nearly always been used purely as an executable, but on a small number of occasions we have written other executables which automate project A, getting it to launch itself, connect to a datab...more >>

How do i search in vb.net dataset object with unicode. I've have problem. ds.tables("table1").select("Name like '" & (unicode) & "'") ...more >>

Can anyone suggest automated regression testing tools they use for the .Net apps? We would like to begin nightly automated testing of our apps. If it matters, we use Infragistics for our presentation layer. Thanks very much. ...more >>

I'm newbie in serial communications any help I have to program lab analyzer with these protocols any help. I have to do this from VB.NET but I for experimenting use HyperTerminal I can't brake start packet I get "invalid length packet' Any help thx ...more >>

I have a picturebox on my VB.NET form. The picturebox size mode is set to stretched. I then load an image into that form and display it. As the user moves the mouse over the form, I want to get and display (in the status bar) the image coordinates of the mouse location. However, if I use the pic...more >>

Hi,all We can set a breakpoint that will break when a varible's value changes or reaches a destination value in VB6. I think this is a most valuble debugging tool. In VB.NET, there is also a "New Breakpoint" menu under the mainmenu "Debug". After clicking the menu a dialog appears. The dialog...more >>

Is there a way to programatically set the format of just one column in a datagrid? I have a datagrid bined to a datasource. My dataview has 6 columns. And I want to format one column ('amount')...without have to mess with all the other columns. If I use DataGridTableStyle() and DataGridTextBo...more >>

I was reviewing these vb.net classes which deal with user logins, logouts, cookies etc etc. I noticed that in the Page_Load function of a user control the code calls into another library like so Call AnotherClassLibrary.AnotherClass.UserLogin(userId) I do not understand how this code ca...more >>

Hi, I trying to edit a project I haven't worked with in a long time. I am getting this error: Namespace or type 'Core' for Imports 'Microsoft.Office.Core' cannot be found. When I checked the references, It says the refernces is already added. Thanks in Advance, Elena ...more >>

Hi all, I'm trying to build a shopping cart application and I need sample code or any template that I can use for building this type of applications. Is anyone aware of such template or application that I can use? Thanks in advance, Roy...more >>

Hi all I'm looking into persisting data for the life of an application. Can anyone enlighten me as to which would produce the least memory overhead; i) Storing dataset objects in a hashtable ii) Storing the datasets as xml files and reloading them into memory Cheers Keith ...more >>

I have mentioned this issue previously but as yet have not found a solution. In VB.Net 2003, I have 4 Listviews on a Tab. Each listview has the data source property set to point to a database table and the display member set to a field in that table. The program runs fine and all the infor...more >>

I'm distributing a VB.NET application that uses an Access database. It works on most computers but on one install I got the following error when it tries to use the database: The .NET Data OLE DB Provider(System.Data.OleDb) requires Microsoft Data Access Components(MDAC) version 2.6 or lat...more >>

I am getting an invalid cast exception - cast from string to type double is not valid. Dim curName As String Dim prevName As String = "" curName = CStr(rows.Item(i).Item(colSchName)) ' extract name from database row If (curName.CompareTo(prevName <> 0)) Then <--- exception occurs on th...more >>

Is there a way to customize the look, feel, and functionality of the Windows installer, other than by what's available in the basic properties? ...more >>

How do I save a string (taken from a text box) to a multi string registry key? At the moment when I save a string it turns the Multi string reg entry into a string Key entry! -- Cheers Ithaqua...more >>

Hi, I try to obtain the current culture of a server by executing : Dim str as String str = Thread.CurrentThread.CurrentCulture.ToString() Executing this in a console-applicastion results in the correct string (e.g. "en-AU") but when executing in ASP.NET does the command always return "...more >>

I originally posted this question in the vb.setupwiz forum, but they suggested that it should be posted in a .net group, so I hope this is a better fit - if not please point me in the right direction... I have a VB.net application that relies on MDAC2.7+ to work. The install set up generate...more >>