Hi group, I want to hide the titlebar of Form1, VS2005 thanks very much, Carlos. ...more >>

..NET 1.1/2.0 I have a need to display high-resolution scrollable images in a .NET application (Windows Forms). One well known solution is to create a Panel with AutoScroll set to "true" and then add a PictureBox or another Panel to it, that is used to display the image. The above approach ...more >>

I'm working on a stand-alone winform app and could add a really cool feature if I could just get the URL of the active tab in the active browser window. Note that the browser would have focus...my app just sits in the background and based on the current URL, it would change the context of inf...more >>

Hi My app needs to use the MyApplication_Startup and MyApplication_StartupNextInstance events but do not need the start-up form. How can I get rid of the start-up form as I can't select the Sub Main when application framework is enabled.? Thanks Regards ...more >>

Hi I have a number of forms which open like this; Dim frm1 As frmForm1 = New frmForm1 Dim frm2 As frmForm2 = New frmForm2 Dim frm3 As frmForm3 = New frmForm3 Dim frm4 As frmForm4 = New frmForm4 ..... and so on and then finally open the first form with frm1.Show(). My question is,...more >>

Hi I have a third party telephony app that can inform of the any incoming call tel number by one of two methods; a) It can run a windows app with tel number passed as parameter, or b) It can run a vbscript with tel number passed as parameter to the script. My question is how can I desi...more >>

Hi, I have an Windows Forms application written in C# which has a tabcontrol in it. The tabcontrol has many pages in it. Each tabpage deals with a specific feature in the application. e.g. Download, Upload, Erase etc. If I add all the controls directly to the tabpages, then that basi...more >>

I have rather odd problem and I am not sure how to go about debugging it. I have an MDI application that I am deploying on the local intranet to about 20 users using ClickOnce deployment. I am just using the default setting in Visual Studio 2005 to deploy the app to an intranet web server. It ...more >>

Hi there, My application, which uses the FolderBrowserDialog, sometimes throws a NullReferenceException with the following call stack when calling FolderBrowserDialog.ShowDialog(): at System.Windows.Forms.UnsafeNativeMethods.Shell32.SHBrowseForFolder(BROWSEINFO lpbi) at System.W...more >>

Hi I need to develop winform database applications and wondering is these two books will get me there; Data Binding with Windows Forms 2.0: Programming Smart Client Data Applications with .Net http://www.amazon.co.uk/Data-Binding-Windows-Forms-2-0/dp/032126892X/ref=wl_it_dp?ie=UTF8&coliid...more >>

I'm using the following code to determine the available serial ports: ComboBoxPort.Items.Clear() For Each sp As String In My.Computer.Ports.SerialPortNames ComboBoxPort.Items.Add(sp) Next It worked well in XP, but under Vista (now with SP1) the Bluetooth ...more >>

1. I make a selection in a combobox 2. I click outside my window on the desktop Result: The Combobox lostFocus fires multiple times until my application blows up. How can I work around this problem? -- Arne Garvander Certified Geek Professional Data Dude...more >>

Hi, Recently I posted a message here on issues with setting ShowInTaskBar at runtime; no one's responded yet, but I am not complaining :) I've always felt that getting a response in groups like these is a "bonus," and I'm always appeciative of the generous gift of time by experts that goes...more >>

When I click a column in my datagrid a sort occur. If I click the column with dates, it sorts in m/d/y order. I would like it to either sort in y/m/d order or I would like to turn off the sort. It seems like by date is in a text format. Maybe I can change the data type to datetime and the sort...more >>

Hello, I know this topic has been discussed before but my problem is kind of different. I have the following menu items, File View Tools Help Now i have checked "hide underline letters for navigation until i press the Alt key" in the desktop appearance effects. Now when i "click" on file...more >>

It appears there's a bug in Visual Studio 2005 when trying to deploy a click-once application (this is a completely different issue than my last post, in case anyone's keeping track). When I set my publishing settings, the first time, it works just fine. When I want to publish to a different ...more >>

Does a windows textbox have a property that tells if the user has entered anything into a textbox on a windows. -- Arne Garvander Certified Geek Professional Data Dude...more >>

Hi, I have an application where I have used Application.DoEvents() method on the click event of a NumericUpDown. This particular method is throwing "Object reference not set to an instance of an object" error.. Does anyone have any idea about it? Regards, Bharathi...more >>

The scenario is we're about to release an exe to our clients. It's a winforms application that uses reflection, remoting, generics, and serialization. We want to protect the intellectual proprety rights of our code. One solution is to obfuscate the exe. I've come across some 3rd party so...more >>

Hi Guys, I have multiple domain names www.alnajdawi.com, alnajdawi.com, www.alnajdawi.net, alnajdawi.net as a host headers in IIS 6.0 I want to know how can I redirect all these URL’s to one URL www.alnajdawi.com, so if a user entered one of these URL’s he has to be redirected to www...more >>

GC.Collect() not cleaning memory, how to find out what references to lots of memory still exist? When all my processign is done i set everything to null and then: GC.Collect(); and then GC.WaitForPendingFinalizers(); but it still shows that my process takes 400 MB of memory. Is there any ea...more >>

Hi, We are signing our ClickOnce manifests with a code signing certificate purchased from Thawte. When we install the software a security warning is shown, and when we click on the publisher it says the certificate can not be validated. This is because the "Thawte Code Signing CA" is not ...more >>

Hi, i need to share custom object with remoting. Ideas???? Please....more >>

How do I fix this problem ? It keeps poping up once in a while? Read out says that the virtual memory is low...more >>

what is good book for learning c# forms programming? thx!...more >>

Hello all, I'm experiencing a samewhat strange behaviour when running my Windows Forms app from withing Visual Studio 2008. The application is multithreaded and the workerthread fires an event that should enable a button in the GUI. I'm using BeginInvoke to call the method that enables t...more >>

Hi When running my app in vs 2008 IDE I get the below messages in the Immediate Window repeatedly. A first chance exception of type 'System.NullReferenceException' occurred in MyApp.exe A first chance exception of type 'System.Runtime.InteropServices.InvalidComObjectException' occurred ...more >>

I am using C # .NET Framework 3.5. I have a calling form that invokes dialog box (called form). I want a button in the called form to change the value of a property in a control in the calling form. Clearly I could set a return code in the called form and have it acted on when control is r...more >>

In my winforms app, I have a MainForm which has a panel on it called ContentPanel. ContentPanel holds a User Control which consists of a grid of records depending on whether it is customers, invoices etc. From within the user control which is sitting in the panel on the MainForm how can I acces...more >>

I am trying to create a Windows Explorer icon type object in .NET that will display an icon image and have a label that works like the label on an icon in Windows Explorer; maximum two-line display that expands to full-size when selected and is editable. I would also like to be able to have...more >>

Hi, I am using reflection to read names from enum and creating radio buttons inside a groupbox. Everything is working fine. However, I am not able to adjust the size of the group box to fit the content. Is there a simple solution to this problem? Parent of group box is FlowLayoutPanel which...more >>

Greetings, Using VS 2005 SP1; I created a simple form by dragging and dropping a data table. I changed it to a details view, so I have a mixture of text boxes, combo boxes and a check box (no dgv). I want to programatically populate the controls when the user clicks on the Add New button, s...more >>

Hi I am using an open file dialog which allows me to select a file to open. This is all great. But it does not allow me to give a filename and select folder to save the file to if the file does not already exist. How can I implement save file functionality? Thanks Regards ...more >>

Hi I have replaced an ms access app with its vb.net version at a client site. Now the clients keeps complaining about how slow the app response is. The complains they have are for example when app is minimised and then trying to maximise it after a while takes a while for app to get maximis...more >>

I'm having problems creating large pagefiles on os disk conencted via MS iSCSI Initiator. I'm guessing this is because the iSCSI disk is not available at the time Windows tries to create the pagefile, does anyone know a way arond this ? Thanks...more >>

Hey all you fine technological geniuses! I have seen some of you having some problem as I have encountered the last week. When starting up the computer says: 'Bootmgr. missing - press ctrl.-alt-delete to restart'. I think I might have tried everything you have suggested and more to it, but the...more >>

I had Vista Home Premium with VS 2008 - worked just great. Upgraded to Vista Ultimate - now with a Windows App the following happens: 1. Try to open Form1 in designers mode (new app or existing app), error = "The service Microsoft.VisualStudio.Shell.Interop.ISelectionContainer already exists i...more >>

Hi Can I run a from in one project from a second project, both projects being in the same solution? Thanks Regards ...more >>

Hi, I'm currently using ClickOnce to deploy an application written in Visual C# 2005. The client has it installed already. I'm wondering if there is a way to change the client to point to a different publish server (http://66.x.x.x/app) to download updates without uninstalling and insta...more >>

PerformanceCounterCategory.Create() takes 3 minutes to add a new category!! How come? What can cause this? ...more >>

I have a few types of panels (each with different controls), which I will create dynamically and place on a form. I can make them UserControls if I need to. However I would like to have a base class for these, so that I have a class hierarchy like: System.Windows.Forms.Panel | | MyBasePa...more >>

I have a winform app that validates a user against a table in my database. I want to track the user throughout the program for maintaining permissions to access parts of the program etc. In a web app, I would just throw the current user into a session varaible and access it from any webform. ...more >>

Does anyone know what the difference between Keys.Control and Keys.ControlKey is? Same goes for Keys.Shift and Keys.ShiftKey. What's the correct usage for these values? ...more >>

Hello all, I wanted some advice on the easiest way to go about the following: I have some TextBoxes that are enabled/disabled at various times in the program. When they are disabled, the default is a gray background with dark gray text. Is it possible to customize the text color when the Te...more >>

Hi I have a string expression which is evaluated based on value of a variable like this; "MyTable.MyField = (" & MyVar.ToString & ")" I need to save this expression as app setting so I can change it without having to recompile and reinstall the app every time. How do I do this? Creat...more >>

Hello, The location of the Click Once Client update was changed (Cert expired), while the users desktop shortcuts remained from the Original install. I confirmed that the application starts using Start Menu / Programs, but not the old desktop shortcuts. This makes sense to me, but is there ...more >>

Are there any suggestions for developing large windows form applications (1000+ forms some with 30-50 controls on the form) in .NET 2.0 that scale properly in 96DPI and 120DPI. Microsoft ISV is discussing to switch to WPF but am curious on others have handled this. We are seeing labels...more >>

I have a custom control that draws a special grid. The size of the control should be computed based on the number of rows and columns (plus some padding). Right now I set the Width and Height of the control manually in OnPaint() (based on the number of rows/columns). This is working, but I am ...more >>

I want to do a control like this: http://img216.imageshack.us/img216/1629/ctrlib6.jpg The HScrollBar class almost does this. However, instead of rendering the scroll "knob", I'd like to draw text to show the position (e.g., in the image, it draws 13/16). Any tips on how to do this?...more >>

Hello Have a huge XML file with multitudes of "LogEntry" nodes / text lines. A small sample of this xml/text content is below. The file could be anywhere between 200 to 2000 MB. My questions comes in two parts. (A) I would like a solution (or ideas for it), in C#, -- to randomly access ...more >>