...a seemingly easy task, but I just can't figure it out want to retrieve the event "close ("X") button clicked" in a modal form. Can't use the "Closing" event as I have to distinguish between a closing of the form after a selection made and an abortion (which happens when the user just closes the...more >>

I think I'm running into a problem caused by the strong-typing system in dotnet. I have a custom control which can be configured, at design time, to work with one of a number of DataTables in a DataSet. The custom control has a method which puts up a modal form at runtime; the type of modal for...more >>

Hi: I'm trying to develop a module for printing a receipt on an ordinary text printer, using the "Generic/Text Only" driver provided by the operating system I was wondering whether anybody in this forum has done that Regards ...more >>

Could someone please explain to me why the f**k my Windows.Forms application only allows >>one<< user control to appear in the My User Controls section of the toolbar??? I ran into this problem when I created my second user control. It compiled fine, no messages, but it refused to show up in th...more >>

I am having a problem databinding a combobox that I have on a form. I have setup the databinding in the following way. this.flexibilityList.Items.AddRange(new object[] {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"}); I then add the binding like this. this.measurement = new Bus...more >>

I want to prevent a TabPage being visited under certain conditions. To do this I put the validation in the TabControl's SelectedIndexChanged event and if I want to disable access I programmatically set the index back to what it was. This does work but at runtime the user momentarily sees the t...more >>

How can I capture all of the layout code from the designer into the "code behind" of a WinForm? For example, if I drag a textbox on a form and then modify the CharacterCasing property in the designer, it appears in the code. But virtually no other properties show unless I change them as w...more >>

How can I disable a specific TabPage in a TabControl ? It does not have an Enabled property. I dont want to remove it from the control's page collection I just want it to appear disabled. NB. Interestingly though, I can set the Enabled property of a TabPage without it complaining at compile or...more >>

Hi, I want to enable the right click option in my RichTextBox which allows the user to copy, pase, cut operations etc. In a normal textbox, when I right click, I see this menu. Could anybody tell me how to enable the same for a RichTextBox? Thanks in advance, Sateesh. ...more >>

I have a VB.NET application that has a number of windows forms. What I would like to do is be able to move from form to form and close the calling form once the new form is open. For example - Form1 has a comand button that creates Form2 as a new Form2 and shows Form2. Once Form2 has been displayed...more >>

hi, how can we get the forms collection object in a class as we did in VB 6. as if we need to do same type of work in different forms we just make a common function and pass form object into it and do our work as below: we have a function lets supppose : Function ChangeBackgroundColor(ByVal...more >>

I'm binding a checkbox to a Y/N value from the database, and providing format/parse events to handle the conversion between Y/N and true/false states :- Binding b = new Binding("Checked", myView, "YNField"); b.Format += new ConvertEventHandler(boolFormat); b.Parse += new ...more >>

Hi, I've got a problem with the DotNet Application Updater Component - (http://widowsforms.net/articles/appupdater.aspx). When I include an app config file in my app to be updated the upload from the web server fails. The application recognises there is new version and an "UpdateVersion.xml" fil...more >>

The PageSetupDialog seems to have a bug with the PageSettings.Margins property Whenever I call the PageSetupDialog, hit OK and then show the PageSetupDialog again, it changes the margins (10 mm becomes 3.9 mm). Obviously this has something to do with millimeters to inches conversion (10 / 2.54 = 3....more >>

Hi there, We are to make the decision on whether to choose .Net or J2EE. One of the questions my clients asked is that, can we use the Unix as application server, and run Unix based database like Oracle on server side Thanks in advance Jonatha ...more >>

I was wondering if there is any way to unload an assembie after you loaded it? (using vb.net)...more >>