Hey all, I have three panels that take up the full width of the form minus the splitter docked to the left and they are all anchored. Panel1 (top panel) has a button on it to allow the user to change the height depending on the current height. private void BtnExpand_Click(object sender,...more >>

Joe, You sound like a knowledgable fellow - any chance you can look at my earlier datagrid - capture sort posting. Cheers, Trent...more >>

I have a fairly simple program with 2 forms, one having only a toolbar with 5 buttons and a simple status bar, and 8 menu entries in VB. The other form is larger with a couple small images and several labels. I have 4 or 5 complex classes but no instances of them declared and my program ...more >>

I have a simple Help->About window with about 15 labels, 5 buttons, and 2 web links in VB.NET. It also has 2 pictureboxes, an icon 48x48x32bpp and the other 180x180x8bpp. I am running a decent machine at 2.4GHz, nothing running to slow it down, but you can see the form draw each control ...more >>

Here is the problem: An error has occurred because a control with auto-generated id '_ctl2' could not be located to raise a postback event. To avoid this error, explicitly set the ID property of controls that raise postback events. Description: An unhandled exception occurred during the execut...more >>

I'm working on a Windows Forms app that includes a TreeView control. The TreeView is set to allow label editing. If I click twice on a label I can edit it fine. I also have a "Rename Client" item on a context menu, and if I pick that I can edit the label. However, at the next level up I have...more >>

Hi all, In my application I have modal form and controls on this form have tooltips. I do not recreate instance of the form, only hide it and show again. But after second ShowModal all tooltips disapear. Is this known bug, or I do something wrong? Sample code illustrates this behavior: ...more >>

Folks: I am trying to use .NET's DataObject.SetData to set a particular format for clipboards and drag and drop. But I am as yet unable to prevent .NET DataObject from prefixing my desired data with some unwanted data. (I can do the parallel operation just fine using my own implementation o...more >>

Hi everyone, I'm using the ownerdraw functions for creating a menu, and while I can get TRUE for e.State.Selected , I can't get a TRUE on e.State.HotLight, no matter how much I run the mouse over the menu item. I'm on Windows XP. Here's the code I'm using: void MenuOnDraw(object sender, S...more >>

Dear all, I am currently design a mdi program using C# and .net framework. I met a problem that when I clicked the controls in parent form, such as buttons, numericUpDown, etc, the control get focus, and I can't get activeMdiChild focus back even I set ActiveMdiChild.Focus(). I seems li...more >>

Hi, I have a splitter control between tabcontrol and listview. It works. I want to keep the ratio by which the splitter divide the screen when I maximize the window. Sometimes I maximized d the window and then set the spillter near the bottom of the screen. Then I restored the windows ...more >>

In fact, I'm trying to add a sort arrow in the column header of a list view. According to posts and sites, it is shown in the famous sample. However, the link is not valid anymore: http://www.codeproject.com/cs/miscctrl/sortedlistview.asp Someone points me to the google cache: http://www....more >>

Hi! I've got into trouble trying to place different actons on single and double clicks in the TreeView nodes. Unfortunately, the TreeView control fires both Click and DoubleClick events sequentially when the user makes double click on some node and there is now way to say at first Click event...more >>

I am trying to implement drag/drop functionality of email messages from Outlook into my user control. The goal is to capture the drop event and create a .msg file similar to doing a "Save As..." from Outlook or dragging an email into Windows explorer. I seem to get only a portion of the ...more >>

Hi I posted the basis of this problem a few days ago with no response but now have some new informationthat may hopefully trigger someones memory/interest. If I set the BackgroundImage attribute for a form to a bitmap and the TransparencyKey property to one of the colors in the form (in my ...more >>

Hi, A Windows form that I'm developing will have two controls: Label1 and Label2. Both controls are of type Label (go figure). The text of Label1 will not be known until runtime and may change at times. When the MyText property of the containing form is set, I want to: a) Set the La...more >>

Hi, I have a VB.NET Windows app, and I want to make a HTTP POST to a web page. Anyone has an example of how I can do this? thanks a lot, Jenny...more >>

Hello, I have a datagrid called dgprojects that is bound to a dataset called dsprojects. However I wish to detect when the user scrolls down the grid and selects another row, so that I can call another procedure using the element in the first column of the row as the parameter. Than...more >>

I understand that I am not supposed to alter the .config file for a program (accessible through the AppSettings[]). Is there a System class you could recommend that I could use (or even a class out there somewhere) to easily load and save custom settings for the current user? My only thought ...more >>

hi there, I got a rather annoying functionality in my code that I could not figure out. My system is built with a "operation based" functionality which means that a user's permission is based on which stored procedures he/she can execute through the program. When I ran it in debug mode ( eit...more >>

how can I get the name of a form (or the form as object) to which a = control belongs for example a menuitem. How can I get the form through = the menuitem?...more >>

Hi, I have a question about using imagelist in treeview. I want to create a treeview for allowing navigating through the system directory structure. How can I get the imagelist of the windows system's imagelist that contains the glyph of drives, and folders, etc. I know I can create my ...more >>

hello, I know that this topic has be raised many many time. However, they always refer to the famous Carlos Peres and the related link: http://www.codeproject.com/info/error404.asp?404;http://www.codeproject.com/cs/miscctrl/sortedlistview.asp It is currently not valid... Does anyone know wh...more >>

I use BitBlt for scrolling a large bitmap (3200x2600)px but problem is because HBITMAP takes too much memory. After loading of images: bmp = new Bitmap("c:\\Bitmaps\\3200x2600Gif.gif"); takes about 8Mb and after executing following line: handleBitmap = bmp.GetHbitmap(); my application i...more >>

I have just started windows development, and have a really simple question: I want to create a 'dropdown' control, with a down arrow to the right, which when clicked, causes the items in the control to 'drop down', in a list, which the user can scroll through. We've all seen them. I ad...more >>

Hello, I am using the new method of the .NET Framework 1.1 Application.EnableVisualStyles() to enable the XP Visual styles in my Windows Forms application. This works fine so far, but now the images of all my TreeView controls disappeared. When I disable the XP Styles the icons are shown ...more >>

Aplologies for the cross-posted mail. This crap .NET component provider, who would likely win the worst web site in the world competition are a dirty SPAMMING company and send out junk mail to random mail list with false reply addresses. Don't support this scum company by buying their produc...more >>

I would like to handle custom messages in my windows form/application. In ATL, I derived from CWindowImpl and added message handlers to my message map. In VB Code requires me to hook into the WinProc to handle messages. How can I achieve the same thing in C#? Do I have to hook into the WinProc...more >>

Hello, I have a problem with my form.show not working. I have a standard forms collection class as follows: Public Class FormsCollection Inherits CollectionBase Public Shadows Function Add(ByVal FormObject As Form) As Form MyBase.List.Add(FormObject) ...more >>

How do you format dates in a combo box? The dates from the database diaplay both the date and time (i.e. 8/28/2003 12:00:00 AM). What I want is just 8/28/2003. Thanks in advance ...more >>

Hi folks! I have a .NET RichTextBox derived class which has to react differently to WM_GETTEXT (and some other messages) than it does by default (mainly converting between \n and \r\n). I override WndProc, but returning the (altered) text does not work: protected override void WndProc(ref S...more >>

I am new to threading and am a little confused... I have a windows form with which I have placed a user control made up of a treeview control and some loading methods. Since the loading of the treeview takes a while (15 sec), I am attempting to run the treeview loading logic in another th...more >>

In a toy project, the tab control is benign. Every time I get a large windws form with lots of control on lots of tab pages, it turns into a monster! True since J++ also. OK: Databinding controls on tab pages is a huge headache because for some reason when I fill a dataset before chan...more >>

I have a timer on my form that works fine when I'm just sitting there looking at the form. As soon as I click a button that runs a routine that loops, the timer doesn't fire. What I want to do is exit from the loop after a certain time period if the loop exit condition is never met. Basica...more >>

I have a 4 listboxes. I want to drag items from listbox1 onto listbox2 and from listbox3 onto listbox4. I don't want listbox2 to accept items from listbox3. How can I determine which listbox is the source of the drag operation ? Nick Carter ...more >>

Normally I can verify if a datasets content has changed on an event like a button click. In my case I would like to do this check on the form closing event. When I make the checkup I get the original dataset with without the changes that are supposed to have taken place. Even when I "watch...more >>

Hi, I have a datagrid that displays search results. I also have a column style applied to this grid. I would like to open a window for the appropriate row when the user double-clicks on it, but I am having trouble capturing the event in a way that the user doesn't have to do it a few t...more >>

Hi, I have a listview control and set its checkboxes = true. How am I able to programmatically set check on it instead of using mouse click? e.g. if I want to set check for the first listview item, I declared this: Dim e As ItemCheckEventArgs = New ItemCheckEventArgs (indices(i), Che...more >>

Hello, I=B4d like to present a datagrid with several column, where=20 the first one is a treeview. In this way, when the user=20 open a row clicking "+", the rest columns data are=20 presented. How can I get it? thanks in advance. Victor ...more >>

Hi I want to calculate the no of days between 2 given days. Using c#.But the start date and the end date should not be counted.Eg., Diff between 01/01/2003 and 01/10/2003 (mm/dd/yyyy format)should be 8 days. Thanks Sonu...more >>

Hi, I retrieve a customer row from the Northwind database into a DataSet and bind it to a number of text boxes as follows: private void BindData(string custID) { m_dsCust = m_custDAL.Load(custID); txtCompanyName.DataBinding.Add( "Text", m_dsCust, "Customer.CompanyName"); t...more >>

I am trying to create a side toolbar. When I add buttons it VS.Net does not give me the power to change the X and Y coordinates. Is there a way to change this? Thanks in advance ...more >>

I would like to change the CheckBoxes property of a list view at runtime, but doing so does not show the checkboxes. The text in the first column is aligned to the right side and you have to click several times on an empty space (of the column) in order to have the checkbox show up. Anyone...more >>

I added a toolbar to a form and added one button. I made sure ShowToolTips = true for the Toolbar, and have set a tooltip for the button. The problem is the tooltip only shows after clicking somewhere on the toolbar itself. It seems it needs to have the focus before tooltips will show. An...more >>

Hello, I'm trying to find the Location of a control in Screen coordinates. I'm trying to create a Popup Box below the control. However, the popup box has a different parent control. I tried adding up all of the Parent.Top and Parent.Left coordinates, but the Popup was off from where I w...more >>

How do I search for an item in a list view? // in the constructor ListView lv = new ListView(); lv.Items.Add("Apple"); lv.Items.Add("Banana"); lv.Items.Add("Cherry"); // in a button if(lv.Items.Contain(new ListViewItem("Apple"))) MessageBox.Show("Found"); else MessageBox.Show("Didn...more >>

hi- i recently built a small and simple windows forms app using c# and vs.net 2003. a number of friends could not complete the install without first installing the full 23MB .net framework 1.1. any suggestions on how to either write the app so it doesnt need the framework, or, include a ...more >>

DrawRectangle draws from Left to Right, it appears. However, Rectangle seems to think the rectangle does not include the pixel referred to in its Right property.. the range includes Left and every pixel up to but not including Right. You can see this strange inconsistency (though at which of...more >>

I have a VB.NET app that contains a datagrid. The user needs to be able to click on a row header and drag that row up or down in the list. Does anyone know how to add this functionality?...more >>

Hello ALL, I have two forms (frmCustomers, frmOpenCustomers) In the frmOpenCustomers, i have a DataGrid fill with the Customers name. I show the frmOpenCustomers form from the frmCustomers form like that: frmOpenCustomers opCust = new frmOpenCustomers(); opCust.ShowDialog(); After I click ...more >>