Hi All, This should be pretty easy, and I'm sure there's a simple way to do it, but it's eluding me. The application has three windows open at all times. Needed functionality: a click on any of the three windows should bring the other two to the front as well so that they would all be above...more >>

In VC++ using MFC I created a SDI app and in the CFormView I created a CPropertySheet added the CPropertyPage's to create a Wizard style SDI. How can I do something like this in WindowsForms? Thanks for you help?......more >>

Hi! i have a form in VB.Net with two command buttons CmdDelete and CmdAdd i need to add shortcut keys for example F8 for CmdDelete and F4 for CmdAdd but i don't have any code. could someone plz show me a sample code... Best wishes ...more >>

Is it possible to create a TreeView with variable height TreeNodes? For example, I may want to have text in a given tree node have hard return characters that wrap that node's text to next line? There is the TreeView.ItemHeight property but that only allows setting a height for all TreeNode...more >>

I am having a strange issue and cannot solve it. Basically, I have a form that edits information in a database. This form has many different controls that are bound to a business object. When I first load the form to edit the info everything works properly. The process of loading the objec...more >>

Hi, I'm writing a control called a validating submit button. Basically, you can tell it to validate a number of controls when the user hits this button. When they hit the button, it'll say, "You must enter yada yada..." and highlight the bad field. Ok, now that I've got that out of the way,...more >>

What code do I have to add to my application to get it to check for updates, then re-install itself via an MSI file? Any simple examples out there? ...more >>

Hi; I have this case where when I click on a line in my TreeView, it selects it for a second, and then moves the selection back to the previous selection. Usually I have to click 3 times to get it to stick - then it's fine from then on. The tree is not set to accept drag/drop. HideSelect...more >>

Hi; I used the Win32:SetParent to set the parent of a Form to the Window of the app it is in (Word). This forced the form to stay within the main window of Word. How can I set a Form so it is always above the Word window - but not restricted to being within it? -- thanks - dave...more >>

Hi; I have a modeless form (not modal). I want when the user clicks on the X that it hides instead of closes. I was going to handle this in the Closing event but I also need to be able to close the window at some time - so that won't work. So, any suggestions? Also, is there a call I ...more >>

hello members, i m using windows form c# using follwoing code StreamWriter sw = new StreamWriter(new FileStream(@"c:\anyTextFile.txt", FileMode.Append)); sw.WriteLine("this is test text \n now from here is next line"); sw.Flush(); sw.Close(); i m trying to write a simple text file, whe...more >>

currently i have a solution with 8 projects. In the Client project there is a form called ListSer i would like to use in my Rpts project. Client is the startup project, so can't reference to it. Is there a way to use the ListSer form in my Rpts project? Is there a way to create global...more >>

I want to create a small app that uses a jpg as the main form's "face" (i.e. windows media). I downloaded a sample app from codeproject and noticed that, in the main code, the developer actually went through and built up the region with a bunch of AddCurve() and AddLine() calls. Isn't there ...more >>

I've a .NET WinForms application. The forms needs to be showed from a VB6 application. I wrote a simple class "COMWrapper" registered for COM Interop that instances the appropriate form and show it. The problems appeara when I show a MessageBox from the form. When I press OK the parent form...more >>

What types of issues cause DataGrid to throw up this message box when changing a cell value to some new legal cell value, and navigating away from the row?...more >>

Hi All, How do I make all my Controls on the C# windows Form readonly.? -SARADHI ...more >>

Which is the best way to prevent opening a form which is already open? my program has an mdiparent form and when the user opens frmcustomers, can edit records. now if the user again opens this form a new instance will be created and the same form opens again. what i can do to prevent this? I...more >>

Hello: I am trying to build a drag-and-drop operation with a control derived from my abstract base class. The control is either a PictureControl or a PictureGroupControl, both of which have PictureComponentControl as their superclass. When handling a DragOver event, I'd like to treat the...more >>

Hi I have in each of my clients Application directory (30) several files and subfolder sometimes I need to update just a specific .mdb or .txt or .exe or only the app.config . I have tried to do something using the UpdatedApplicationBlock but because of my Directory structure and the v...more >>

When a CollectionEditor displays a CollectionForm (by clicking on a Collection in a PropertyGrid) the application icon is no longer shown in the task list displayed using the Alt-tab key. Any suggestions how to fix this? Do I need to modify style of CollectionForm to do this? How can I do this? ...more >>

Hi all, I've written a window service which needs to write to the event log from time to time based on certain events. Apart from a minor issue at the moment where the actual log isn't created and it uses the "Application" one, I always get the following: "For more information, see Help...more >>

Hi to all. I'm writing an application which should read data from CD-ROM. I have the application started and I I insert the CD-ROM in the reader. Subsequently, I click the button for read the data, but the Windows Form not respond for a couple of seconds. Are there any methods to read t...more >>

Hi to all. I have a Windows Form. I have a field in my form class which implements IDisposable. When I should call Dispose to that object? Is correct to call Dispose of all IDisposable objects in the OnClosed method of the form? Thanks, Pino. ...more >>

Hi Is there a way to save the layout of controls (position, size, visibility, appearance etc.) to a file (xml?) and also be able to load the layout from a file? The idea being that these file scan serve as templates for different clients who may have different preferences. Is someone has...more >>

I have created a class file for Transparent Label and it works. But when I placed the control in the form designer, the text inside the label is not displayed. I have to move the control or press ALT+TAB to refersh the text. Any tips to overcome this problem? My Code: Imports System Impor...more >>

hi there.. i want to scroll down printer after printed a page can anyone help me? thanks......more >>

This is my first attempt to create a custom control. I have set the Browsable attribute (see below)and rebuilt the application but I cannot get the property to show on the Properties form. The control and all that it inherits from Control do show. Am I missing something? Thanks, Nigel B ...more >>

I have loaded a DataTable from SQL server table via SQLDataAdapter as a basis. Once filled, I add columns that are calculated, and found via other methods. This includes tooltip text specific to the row, row foreground and background colors, and data parsed from text files on disk. And even...more >>

Let's say I know a file extension and I want to get the Windows icon for that type of file, and put that icon in the image for an item in a list view. Would this be possible without loading all possible Windows icons into the image list at compile time? In other words, is there a way to dy...more >>

Hi, Im Sure this is a standard question and one of those its easy if you know how. Basically I am returning a dataset from sql server with five fields but only want to display to columns in my datagrid populated from two fields from the dataset So ive a) created a grid datagridstyle b) Iv...more >>

Hi, I want to know if it is possible to apply a custom made skin/xp theme to an individual dot net application. What I am trying to do is create a new skin\xp theme (e.g. Different style scroll bars) and then get my dot net application to use this. This way no other applications are comprom...more >>

Hello you, I need Your HELP. I have my own TreeView Nodes Editor, in order to add 'MyTreeNode'', like node which are ComboBox and so. I have two classes. one inherit from 'TreeView' and the other from 'TreeNode'. In 'MyTreeView' i override 'Nodes' (keyword- new) in order to open my custo...more >>

Hi- In my application I have a RichTextBox, and I want to scroll it so that the character at a given index appears on the top line of the box. Up till now, I've used this routine, which works fine: == rtb.Focus(); rtb.SelectionStart=rtb.Text.Length-1; rtb.SelectionLength=0; rtb.SelectionSt...more >>

Hi, Bit of a newbie question, but is it possible from the .net framework, to gather information on which application (managed or otherwise) currently has GUI focus? Thanks. ...more >>

Hi; I know it's probably in the one place I didn't look but I have been over the docs and several books trying to find how to create a form that is a wizard and can't find it. How do I set up a wizard? -- thanks - dave...more >>

At designtime I can assingn a Form's Icon property to a .png file. In the generated code I see: Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon) when I do this with the designer. I would like to make this assignment at runtime. I added two .png files to my Pro...more >>

I have a control class that inherits from ComboBox. The intention of = the constructor is to grab a reference to the BaseForm class of the form = containing the custom control and populate its members using cached data = from a "ClientCache" dataset in the base form. The constructor: Public ...more >>

If I have a form with a button and add a button_Click event handler, and within that handler I update the form's GUI, do I need to marshal onto the main thread? i.e. Do I need to do this: private void button1_Click(object sender, System.EventArgs e) { if (InvokeRequired) { Invoke...more >>

Hi... i have created a MDI form and a MDI child form. i am supposed to enable or disable certain menu in the MDI parent form based on certain condition that occur. is there anyway of doing it like the old VB6 ways of direct manipulation . such as frmMDIParent.mnuAdd.Enabled = True if no...more >>

Hello, I've got a form witch has an image as background this image is transparent, when I open the application, I can see the transparency but if I open another applicaction (i.e. explorer) the transparency disappear, somebody can help me? Regards -------------------------------- --------...more >>

Hi, I need to create an app that would make possible to manipulate shapes and lines as you can do in PowerPoint. Everything that it should do would be: - Create lines and be able to modify it - Create curves / splines and then being able to change their control points and/or create new con...more >>

How can I get the amount of memory an arbitrary instance is consuming? The typeof() operator is not good for what I'm looking for -- I need to pass in any arbitrary instance of any arbitrary class. It needs to be recursive -- if that's the word. It needs to follow the references to any child o...more >>

I am using VS 2003. I created a C#.NET window form and added a textbox to the form. I set the databindings Text property to the dataset.table.field. I am using Access database. When I ran the form, the textbox displayed the value correctly. I changed the textbox vale and in the texbox TextC...more >>

Hello I want to change the Hand system cursor, with the hand with shadow I used this code in Delphi some years ago: <delphi> IDC_HAND = MakeIntResource(32649); Screen.Cursors[crHandPoint] := LoadCursor(0, IDC_HAND); </delphi> But in C# it doesn't work, the cursor doesn't change <c#> int...more >>

How do I handle Null values in a DataGrid so the grid won't display 'null' if the field data is empty/null? The following SQL statement returns an error message "Invalid number of arguments..." SELECT MyField1, IsNull(MyField2, 'na') as MyField2 from MyTable ...more >>

I write a Vector Draw program.In my custom control,I override OnMouseMove(...) in which I call PropertyGrid 's Refresh().Once OnMouseMove invoke,even if I don't move mouse.It'll generate WM_MouseMove continously(using spy to monitor it). for example,there is a PropertyGrid in the form,and I...more >>

I have an owner drawn ToolTip control for which I handle the Draw event. This works very nicely but I'm sharing the same tooltip component among many different controls (it's actually an array of user controls of the same type). I'm finding that once I hover the mouse over one of these control...more >>