I am new to .NET and am wondering how to accomplish having certain global objects that could be referenced by other forms/user controls. I have a main form on which I show various user controls depending on which item the user clicks on in the NavBar on the left of the form. Each user control ha...more >>

Both of them are derived from Container Control Class. But if I used a user control derived class, it cause a refreshment problem, whereas everything was okay if used a form derived class. I suspected user control had blocked some messages. thx. ...more >>

I'm working on a C# program in Visual Studio 2003. The main form has a treeview control on the left side, a splitter, and the right side of the splitter has nothing and is used as the MDI client area. I have several MDI child forms open (typically maximized) and can pick which child form has ...more >>

I am trying to deploy an application using ClickOnce The website appears to be correct. The user can open it in thier browser and click on the install button The user receives the Application Install - Security Warning prompt and can click Install or Dont Install The user clicks Install...more >>

I have created a windows service in VS2005 .NET, which works well. The service is set to "Automatic", however it does not autostart on bootup. The eventlog shows the error "The service did not respond to the start or control request in a timely fashion" My service uses TCP/IP sockets, so I ...more >>

I have a VB.NET app with a radio button that has check changed handler on it, and the InitializeComponent() code sets the .checked value to true which triggers the event handler. Is there a way to suspend event processing until initialization is complete? Thanks. ...more >>

I need to do something extra every time the position of what is the 'current' item changes. This could be the user clicking one of the buttons, or typing in a new number However, there doesn't seem to be an event that just says " the user selected a different item from the navigator". In f...more >>

Hi, I am trying to write Windows Form application in .NET 2.0, which needs ActiveDirectory Authentication module integration. Can any one point me to related links. Please suggest me what is the right way of doing in .NET 2.0. Thanks Suresh Eddala ...more >>

I am trying to get a QueryContinueDragEvent per the MSDN tutorial on Drag&Drop from a TreeView control. My TreeView is at the same time source and destination (basically I am trying to manually rearrange nodes). I try to abort the D&D when outside the main form but I can not get the Query.. ...more >>

Hi, I have a problem where i need to show non-standardised information in a list and would like to provide in place editing if possible. for example Line 1 A B C Desc 1 3 5 6 Line 2 I II III IV Desc 2 2 4 5 5 The numbers under thier respective headers are the...more >>

Hi gang, this is pretty critical to me. Any help you can provide is appreciated. I have a WebBrowser control placed on a form. I am not getting the same results as I am in IE. Here is the deal, I dynamically load the HTML into the WebBrowser control, then I invoke a script that passes ...more >>

I have two DataGridViews on a form. (I'm using .NET 2005) When I run it, I can't tell which control has the focus because the selection looks the same on both controls. I'd like the selection appearance to work the way Windows Explorer does where only one control has the regular blue selecti...more >>

Hi, I am writing a classic, "Explorer"-like app in vb.net 2003 (dotnetfx1.1). I have written code to handle the dragging and dropping of items from a ListView on the right hand part of the form to a TreeView on the left part of the form. When the user pauses over a node in the TreeView in...more >>

Hi all,=20 I seem to be chewing up memory at a nasty rate when my app runs. It has a polling loop and not surprisingly this is the part that keeps = doing it. I think I've located the line that is my main offender and its when I = marshal to get back onto the GUI thread so I can update my con...more >>

Hi! I already posted this message in microsoft.public.dotnet.framework, but I see almost no reaction, so I decided to re-post it to others newsgroups, too. I just wonder if anybody has faced this problem before and could help to troubleshoot it. Following is my original message. Thanks f...more >>

I am new to .NET Windows Forms but am currently using Visual Studio 2005 primarily with VB.NET. I am in the process of creating an application that is going to have several different forms that allow for editing records in a table in my SQL Server 2005 database, each form serving a different pur...more >>

Hi all, I'm looking at trying to improve the performance of showing a bunch of controls on a panel. I have a class that extends Panel. In that class, I do the following: this.SuspendLayout(); this.Hide(); //add controls to "this" AddControls(); this.ResumeLayout(); this.Show(); I hav...more >>

I have found what seems to be a leak of GDI resources in the .NET TreeView. I'm not entirely sure it's the .NET code or the underlying OS Common control but here's the skinny: If you use the Checkboxes property and set it to true on a TreeView it will leak 1 or 2 bitmaps and 2 memDCs every ti...more >>

Hi there. Does anyone know if it's possible to embed a new resource into an assembly at runtime as well as update an existing (assembly) resource. Any assistance would be appreciated. Thanks. ...more >>

I have a Smart Client application that was written in .NET 1.1 long before .NET 2.0 ever came out. It works great. It uses web services and because we have many development environments, it dynamically gets the base Url to construct the Url for the web services by simply calling Application.Ex...more >>

I published a clickonce application and a couple new versions. I was wondering what is the purpose of the WinClickOnce_1_0_0_0.application WinClickOnce_1_0_0_1.application files on the web server is. It looks like only the WinClickOnce.application file is used (maybe for rollback of...more >>

Hi, I am using VB .net 2005 to create my windows form application , i have a panel control in my main form , i want to change the border color of the panel to red color , could any one help me to resolve this problem Thanks in advance Sajin ...more >>

Hi, I keep getting my VS installations stuck, it this is on a new system that hasn't had any beta installed. Message is like "Cant Determine valid ordering" And the unistall tool doesn't work for the RTM ...more >>

How can I get ClickOnce to work with a browser other than IE? I was reading http://blogs.msdn.com/saurabh/archive/2006/03/02/541988.aspx But couldn't figure out how to "all you need to do is generate the shortcut file " How do I generate the shortcut file?...more >>

Hi, How do I save updated values for Application Settings defined with an Application scope? I created the Application Settings using the Project Properties dialog in VS2005. I am trying to create a dialog box where users can save their preferences. The dialog reads values from the app.co...more >>

Hello there, I have a form that gets shown using the ShowDialog() method. This form then has it's accept and cancel button properties set. If hte user hits the cancel button / hits ESC, the form is closed and they're returned to the parent form. If the use then clicks the accept button / hits ...more >>

When a ClickOnce app is being installed there is a window that says "Installing" which has the application name, an icon (defult square windows icon) and a progress bar. Our app does have a custom icon set,but it doesn't get used in this windows. I have looked all over, even checking into cust...more >>

I have the scrollbars property of my grid set to "both". When I have lots of records, the vertical scroll appears ok, but if the user resizes columns wider so they go off the side of the form, the horizontal scrollbar never appears. Any clues what I am doing wrong? ...more >>

I'd like to initiate a general discussion about implementing WinForms apps on computers that one may never have access to. I've initiated an Alpha version of a WinForms app. On all of my Windows test machines it runs fine. On the machines of some of my Alpha testers, it run fines. But so...more >>

Hi, I am trying to create a control that is similar in functionality to the TrackBar control. I cannot figure out which event to use for sliding the image that serves as a marker over the line. I have tried the MouseMove and MouseDown without success. Can anyone point me in the right dir...more >>

Hi all, I am using vb .net 2005 to implement my application , i am using a color dialog box in my code , basically when it loads it shows "basic colors" , "custom colors" and link button "define custom colors" . but when i click define custom colors it shows the same thing above mentioned as ...more >>

I'm using a windows form in Vb.net 2.0. I have a datagridview that is populated with data. It is for viewing only, i have turned of allowing edits, adding, deleteing and column reorg. when i click on the datagridview and go to edit columns and select a column and look at the SortMode, it's s...more >>

Hi there, Given an arbitrary ".resx" file (not ."resources"), does anybody know how I can identify that this file actually contains a Windows form (in code). Once identified, I then want to collect information about the form and all its controls. Presumably I would want to read this file in...more >>

I'm looking for any information on precisely what the IDE does when opening a form in design mode. I'm pulling my hair out trying to fix some bizarre design-time errors screwing up some forms, and it would help if I knew precisely how the IDE creates and initializes the form and what methods are ...more >>

I am using the new BackgroundWorker for an I/O intensive application and it works great!!! I have a few questions though that hopefully someone can answer. I know this is possible with other components, but am curious as to what BackgroundWorker can do. 1) All the documentation indicat...more >>

Once you have created a dataset in the Data Sources tab, there does not seem to be a way to change the Data Connection. When you open the Configure DataSet Wizard for the second time you begin on the second screen (the first is the "Choose Your Data Connection" which is not enabled). Subsequen...more >>

Hi all, We have a windows forms application with different controls used inside, each control has several input items such as textboxes and some treeviews.. etc. We have been trying to eliminate flickering issues when loading different controls or switching to different views with no luck, ...more >>

I am trying to troubleshoot an application I inherited. On a form, there is a button, that when clicked loads a user control with ShowDialog; btn_Click(object sender, System.EventArgs e) { ucForm1 UCForm1 = new ucForm1(); UCForm1.ShowDialog(this.ParentForm); ..... } in the ucForm...more >>

Hello, I have the Microsoft Authenticode certificates (PKCS #7 Certificates, .spc and .pvk files) acquired from Verisign. How do I use this certificates to Sign the manifest for ClickOnce deployment. IDE accepts only .pfx files. Importing in Internet Explorer and exporting back doesn't seem like...more >>

Something has mysteriously :) happened to my resource file and now in = InitializeComponent() of my form, it is throwing a = MissingManifestResourceException when it attempts to retrieve an = ImageListStreamer from the ResourceManager (code snippet below). I = opened the .resx file and verified...more >>

Hi, I am using VS .NET 2003 and I have a .NET Windows Forms application in C++ ..Net. I want to add a web browser control on one of the forms. This is how I am currently doing it: 1. Added the COM component Microsoft web browser to the form. This actually generate a couple of wr...more >>

Hi I'm a newbie to C# and GDI+.I am writing an application that will display some strings from a file on a panel. There are a few of problems I am facing : 1.How do make the panel re-adjust its size when maximizing the form window ?? 2. I'm drawing the strings on the panel. if the number o...more >>

I have a line of code that looks at My.Application.Info.Version. When I hit this line in the debugger, it passes just fine. After I publish the app, it fails when run, saying I need FileIOPermission permissions. However, I've explicitly included FileIoPermission in the CAS settings. Also, I ha...more >>

Hi, I'm having some trouble with our .NET 2.0 Windows Forms application regarding screen transitions. Suppose we have a form with some big and crowded user control on it. Then we free this control and load another one of the same size. This process causes a lot of flicker and redraw on th...more >>

Is there any way to get the little sort indicator (the up/down arrow that is visible by the column header in Explorer when you sort by a column) on a standard label? Note that I'm not using a datagrid - I know that they show on those by default. I'm using a data repeater control from a thi...more >>

Following up on a question somebody asked a day-or-so ago... When /reading/ BLOBs in C# I can use sequential access and GetBytes(); fine, sorted. However, is there a similar equivalent for /writing/ BLOBs? *Without* having to buffer the entire thing into a byte[] to set into param.Value? O...more >>

I have seen this question asked elsewhere, but have never found an answer. I'm adding a form to my app that has two datagrids - master and detail. The dataset consists of two tables and a relation between them - parent and child tables. One datagrid is bound to the parent table and the othe...more >>

Hi, I think this is a very common problem : I have a main form with a listview. From this form i call a second form to add items to this list. (input form) Private Sub cmdOpmerkingToevoegen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdOpmerkingToevoegen.Cl...more >>

I have a class which contains an arraylist of strings I use this with a property grid to allow me to edit various parameters, How every although it shows all the strings they aren't editable, is there an easy way of making them editable? ...more >>