I'd like to hear from any of you who have *actually used* any of the popular 3rd party control suites (e.g., offerings from ComponentOne, Infragistics) for .NET Windows Forms application development. What has been your experience? FWIW I was a huge fan of Infragistics COM controls, but foun...more >>

Good day, I hoping someone can help me with a problem that I have. I'm trying to update a dataset then my datasource using the sqlcommandbuilder in vb.net 2003. I only want to update fields that actually have been changed by the user. So this is the code I have for one field as an example: ...more >>

I have a textbox which requires a numeric value and I am using the Validating Event to call the ErrorProvider.SetError method when the validation fails. I also have a Cancel button with the CausesValidation property set to FALSE. If I give the textbox focus and enter an empty string and then a...more >>

All - I have an app that has a simple datagrid being filled with an EventLog.Entries. When the MachineName is local ("." or the machine's name) all works fine. When the application tries to access another EventLog on a remote server, there appears to be a security issue or networking issue. ...more >>

Hello I need to let the client of my program edit HTML code within one of the forms of my program. I am looking for a Control that encapsulates Visual Web Developer (I'm not sure whether that's the right phrase to use,i mean "encapsulates" as Windows.Forms.WebBrowser encapsulates IE). Tha...more >>

Have used DrawLine() method to draw some lines in the picturebox (sort of a barcode) in the picturebox paint event. This diagram has to be saved as an image in bmp or tiff format. But the problem is that these lines are not recognized as the image o the picturebox. It shows picturebox.im...more >>

Hello - I am an experienced web programmer who is new to windows forms programming. The problem I am facing is passing control in a winforms app from one form to another. Essentially I have form1, which has some text fields, and upon submittal of those fields using a button click, I want to save...more >>

OK, I was working way too late tonight. I have one form with one tab control. I have eight tabs. And hundreds of controls on those various tabs. I don't know why I did this but anyway I cut the tab control in order to position a panel underneath then pasted the tab control back. Now all of my ...more >>

Hi, I am using VS2003 C# Is their any Free Graph Component in C# .Net ? How can i get it ? Thanks, Yossi ...more >>

Hey all, Working in C# with the Windows Forms 2.0 "DataGridView" control here, and a column of cells of type DataGridViewLinkCell. The DGV is bound to a datasource, and user is allowed to add rows. The subject line is a bit of a misnomer in that I *can* set the ReadOnly property to false...more >>

I am developing a Windows Forms application using VS.Net 2003 in C#. My application is normally sized to cover the entire desktop when it is not iconified. I would like to resize the application depending on whether the Windows TaskBar is in the hidden or displayed state. Is there a notif...more >>

How do you read the filesize of a document/file using the SYSTEM.IO.FILE or whatever other function that might work? Please recommend. ...more >>

Any Word automation gurus out there? I would like to grab the output of a Word merge and split each page off into a separate document (so that I can push them into folders relevant to each recipient). My thought is that I should be looping through the document, selecting section 1, 2, 3...., ...more >>

I am devloping a simple .net windows form using C++. without includeing windows.h it compiles and runs, but is not really doing anything. when I add the #include <windows.h> then I get various compiler errors listed below: c:\T02010_NET_ora9\cgi-bin\programs\ManualKeeper\Form1.h(120): error...more >>

After I select a Row with this.dataGridView1.Rows[xRow].Selected = true; how to move this selected row to the top of the dataGridView1? (c# - 2005) ...more >>

I think I may have stumbled across a bug in Visual Studio 2005, .NET 2.0, or both. The Anchor property doesn't seem to work if a form's size is bound to a user setting. To reproduce the problem: 1. Create a Windows Forms application. 2. Add a label to Form1. Change the background color ...more >>

I have noticed that in 2005 the public properties of a user control run at design time to format the items on the screen. In building user controls it has been necessary to put if ( XXX != null) around many commands in my "set" blocks to avoid having the IDE simply abend and go off the screen...more >>

I'm having a problem getting design-time property binding to work with a form's location property. I want to bind a form's Location property to a user setting. Here is what I did: -- I started with the Location property under Application Settings in the Properties window. -- I added a...more >>

Hi, I am having great difficulty in setting focus to a textbox that is inside a groupbox, why is that? I have checked and the textbox.CanFocus returns false.... I can set the focus to the groupbox but that doesn't help me because I still then have to tab to the text box. Can anyone sugge...more >>

Hello, I am working on a program that Adds a Tab page with a picturebox inside it for each page of a TIF and it works well. If I have a 3 page TIF the application add 3 TabPages and inside each TabPage Adds a PictureBox and properly displays the Images. I also do other things like add tex...more >>

It seems that if I activate a application on a Windows Mobile Device from the Memory control panel app that the Activate event on the main (and only) form of this application is not triggered. Is this normal? WM 2003 CF 1.0 SP3 I haven't tried this on CF 2.0 but I need to support 1.0 anyw...more >>

Hi Recently I had a problem in which I had window opened that had a slider which was updated by raising an event on that window. The background window was still available, and the user clicked on it causing it to perform a long time operation. During this operation the event...more >>

I want to thank Morten Wennevik for his help on my last hurdle, but now I have another one. I have a string value going to a label. The label displays the following: System.Windows.Forms.TextBox, Text: Paul I just want 'Paul' to be displayed. Any suggestions as to why this is happen...more >>

when I display the listview as per the following code, I only see the 'F' of "File Type" and the 'L' of "List Item text" underneath the column header. How do I set the column width to a specified width? Thank you. -greg listView1.Columns.Add("File type", 20, HorizontalAlignment.Left); ...more >>

I have an app with only one form, when i close the form (and after dispose method is executed) the override void onpaint of the form is called again, it's this normal??? i thing maybe in dispose method add 'this.SuspendLayout();' to avoid the onpaint again, but i don't thing a smart solution ...more >>

Scenario: Two classes (objA and objX), the class objX has a field of type objA. class objA { private double _a; public double a { get { return _a; } set { _a = value; } } private int _b; public int b { ...more >>

Hi, I have a listview with only one column. In the first row I am adding an image with no text. In the second column I am trying to add some text but the text gets put in the column but after the image. That is _____________________ |<IMAGE> | | So...more >>

I am writing some 32 bit ATL controls in C++ that I am trying to test in a vb.net app. THe problem is my machine is runing 2003 x64 so the VB app is running ins 64 bit so can't load the atl controls (class not registered). I believe you can target the dotnet app to 32 bit windows, but it's ...more >>

Hi, Various custom controls in my WinForms application register for the 'Application.Idle' event on load, and unregister on dispose. To avoid memory leaks, it's essential that I remember to unregister on dispose. Before my application exits, I'd like to do an 'assert' to assure mys...more >>

Hello, I am trying to write a new LayoutEngine class following the example given in the VS.NET 2005 help. My problem is that TextBoxes always have their AutoSize property set to 'true' yet return a Width of 4 in GetPreferredSize(). In the help entry for TextBoxBase, it says "This property ...more >>

Below is the code. This code should sort Subjects by SeqNo or LastName. But it has no affect on the order. The order remains the same as original dataset (ds). What I am doing wrong? WR Dim dvS As New DataView Dim iPerson_ID As Int32 Try dvS = ds.tblSubje...more >>

Hi, I have a main windows forms with a TabControl. When I open a new form, I add a TabPage to the TabControl, and I add my form to the controls collection of the new page. All work very fine, but, the form inside the tabpage appear with the caption disabled, when it's regularly enabled. Someo...more >>

We've built a ton of ASP.NET applications, and now have a need to build several WinForm applications. We're looking for 2.0 books. I found the two below - any other recommendations? Thanks in advance. -Mark Pro .NET 2.0 Windows Forms and Custom Controls in C# http://www.amazon.com/gp/p...more >>

I have a listview with only one column. In the first row I am adding an image with no text. In the second column I am trying to add some text but the text gets put in the column but after the image. That is _______________________ |<IMAGE> | | SomeTex...more >>

I have a .jpg image that I use in another application. It represents our company logo and I want to place it in form. But the image is way to large. Is there a way in .net window forms to shrink the image to fit into size of window that I have designated in a label object. Or is there anoth...more >>

We have a run into an apparent bug involving the rendering of .NET winform controls within IE 6 (running on XP sp2 and .NET 2.0) . If one of a hosted control's parent elements has style.display == 'none' when the control is created, the width and height of the control will be 0. If the paren...more >>

Hi I have just upgraded a vb.net 2003 project to 2005. I get an error when trying to access a FolderBrowserDialog as follows Private Sub Button1_Click_2(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click FolderBrowserDialog1.Description = "Plea...more >>

This is a very simple question, but I don't know where to find the answer. I have a button on my main form of my windows application, when the user clicks on it, a second form will appear. How do I make it such that the second form will stay focused forever, until it is closed? That means the ...more >>

What causes all forms to resize the same as the others within an MDI container? I've noticed that maximizing or minimizing one form is passed to all other forms within that container. Within the MDI container, I instantiate and display the forms with the following: Dim OwnedForm As New frmA...more >>

Designing a winform with a reportviewer that shows data for a single .rdlc report is no problem, the wizords help to setup the datasource, the bindingsource and the tableadapter instance and bind it to the reportviewer and .rdlc report. But I tried to keep the same form to display another re...more >>

I have an object derived from UserControl which I place on my form. The UserControl handles the OnPaint event for itself, so that I can do custom drawing of my control. I have a problem with this custom drawing, I'm hoping someone can provide some insight. I placed my control on the page abou...more >>

When I bootmy computer I get 2 dialogue boxws open. They state I should have the above version of the dotnet framework. I have a Raedon 9600 AGP card and all my updates are usually from windows update automatic. Most times I choose Custom as multi lingual stuff is useless to me(I think). I buy...more >>

I wrote a custom text editor. Now I have some japaneese customers who have a problem with it. Apparently, according to my understanding of what they said: There is an IME window and when they used it to enter text, characters are doubled. What is this IME window / tool? How could I have it o...more >>

Hi, I need to be able to display a listview with the following functionality. The listview must be able to display different types of information. There are normally 3 types. Type 1 has only 1 column. The first row must display an icon showing the status of this type. The following rows must...more >>

Hi everybody. If you load windows calculator and right-click one of its button you'll get a context menu with just one link. If you click on this link, a yellow "panel" shows up telling you all you need to know about that button. My question is: 1-what is that yellow panel? a control? someth...more >>

Hi, How can I iterate through the forms collection in vb.net (2003). In VB6 I did: For Each f In Forms blah Next f Thanks Mike ...more >>

Hello, I am trying to open a new form (form A)from another forms' (form B) load event but the formB when it opens the controls within it does not paint properly. I see the controls are transparent. Am i doing something wrong by opening a new form from a form's load event? //here is t...more >>

Hello, I'm working on a custom control which I'd like to have a background identical to that of the XP-themed explorer toolbar. Could anyone tell me which class of the VisualStyles hierarchy contains that look? VisualStyleElement.ToolBar seems to have only controls and separators, and ...more >>

Hi. I have a MDI form with some child forms. Only one of the child forms is visible at the same time. It is maximized and all boxes are hidden to simulate a one-form-application. The problem: After minimizing the parent mdi form it can not be properly restored from the task bar. It is show...more >>

Hi I have a user control in which i have a collection (ArrayList) of userdefined objects (A class with two public properties). I am using a custom editor derived from UITypeEditor to edit the values of this collection. The problem is that values in this collection are not persisted ...more >>

Hi all! In my form I use ListBox to put some technical data - log of my program. And it groes up to very huge massive in memory. But exactly I need only 100-150 last records. I use logListBox->Items->Add(System::String("log records"); for adding information. So I've been thinking about t...more >>

Hi All. How do I cause an event to be "manually" fired. I have a user control that contains a button. What I need to do is this: When the user clicks that button, the event "Click" for the user control that contains that button, needs to be fired. I tried "RaiseMouseEvent", but there is almo...more >>

As part of an application I feed text into a richtextbox in readonly mode. If I feed in an empty string the application beeps e.g.: String blah = ""; richTextBox1.SelectedText = blah; result: <beep> Why is this? Chris ...more >>

Hi, How can I change the format of DateTimePicker to YYYY/MM/DD in VS2005? Thank you, Alan ...more >>

I have a combobox with a list of items, and depending which one is selected it displays data relating to the selected item. I want to highlight some of the items in the combobox which meet certain criteria, but i cant find any info about doing this I have tried Combobox.Items.Item(i).backcolo...more >>

Hello All, I have a selected index for a combo, which I percieve to be the best value to use when programitically maniplating combos. What I want to be able to do is retrieve the Selected Value for a given Selected Index It may be just me, but I have found the whole selected value, sele...more >>

Hi, I have a set of labels. I arranged them vertically. The labels supposed to show dollar amount, so they need to be right align. That means if I add digits to each label, it should extend toward left instead of right. How can I do that? Thank you, Alan ...more >>

Hi, How do I draw a vertical or horizontal line on a form without using GDI? Thank you, Alan ...more >>

Hi, Using visual studio 2005 and .NET 2.0, when I right click on a toolbar strip and choose "Insert Standard Items", the IDE adds standard buttons and icons to the toolbar. So far everything is cool. Now, I tried to fin where the added ICONS comes from, no clue!. The only thing t...more >>

Hi, I need a WinForms DropdownList (which for some reason isn't in the ToolBox). The ComboBox would be a good compromise, except that I can't find a way to make it ReadOnly. Am I missing something? - Lew ...more >>

Hi, I am using Visual Studio.NET 2005 and .NET 2.0. I need to configure a DataGridView so it selects the cell when user right clicks on the cell. What would be the best way to do that? Any help would be appreciated, Alan ...more >>

How to I change the namespace for a form in vs 2005? Do I add " "Namespace/End Namespace" to both of the partial files? Or is there an easy way to keep them both sync'd?...more >>

I have deployed an application with ClickOnce Publish wizard to a web site. But when I click web page Install button the web server just returns the content of the .application file as XML to the browser on all my clients. On my Development system it works fine. My Clients: Windows XP Pro...more >>

Hi, I have a simple task that I can't seem to work out. No previous experience in C++. OK, what I want to do is when a mouse enters a window draw an image (from resourses) at a certain location over that form, such as the center of it. When the mouse leaves the form i want the image to ...more >>

Is there a way to programmatically display the underline of button accelerator keys? I am aware of the “Hide underlined letter for keyboard navigation until I press the Alt key” setting but I would like to display the underline irrespective of this setting, just like Microsoft does in W...more >>

Is there any way to alter a listviews row height? I ask as in my ownerdrawn listview (details view) all lower case letters have their subsections cut off. Chris ...more >>

Can a form be a remote object? If not, is there any work around... basically I want a central computer to be controlling forms on several computers on a network? When I try to add Inherits MarshallByRefObject to a Windows Form class, I get the error: Base class 'System.MarshalByRefObject'...more >>

Hi, I am using the WebBrowser control included with VS2005 to view XML files, and they are being displayed correctly as far as I can tell. The problem I am having is saving these XML files to disk. If I try to save the contents of the WebBrowser.DocumentText to disk, the resulting file ...more >>