TreeView Event

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- Previous
  - 1
    - NullReferenceException in Windows.Forms.Label? One of the users of my application is reporting the following crash. The stack trace looks like it's all internal to the Framework, so any ideas on what this might be? I've never had the error myself and am not really sure what to suggest... System.NullReferenceException: Object reference not set to an instance of an object. at System.Windows.Forms.Label.CreateTextFormatFlags() at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs) at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Label.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) Tag: TreeView Event Tag: 117715
  - 2
    - Odd query failure I'm writing a Winforms program in VB (Dot Net 2.0, VS2005) using a SQL Server 2000 database. I'm not sure whether I have a programming bug or a sql problem. I can't get a 'Like' query to work. I have a dll with an xsd. I dragged 2 fields from the Server Explorer onto the xsd. I then created a second query for a Like search. (I've probably used this basic technique hundreds of times on this job but I rarely use the 'Like' command.) This runs perfectly in the Query Builder. The query is as follows: SELECT serial, cnst FROM dbo.micro WHERE (serial LIKE @serial + '%') where 'serial' is the primary key, Char 11. 'cnst' is char 10 - null permitted. I have a data management layer which inherits the xsd. In that I created a pair of functions to fill the default 'micro' table: Public Sub FillMicro() Dim da As New DataManager.dsMicroScheduleTableAdapters.microTableAdapter Try da.Fill(micro) Catch ex As Exception MsgBox("Error Message") End Try End Sub Public Sub FillMicro(ByVal vsJobno As String) Dim da As New DataManager.dsMicroScheduleTableAdapters.microTableAdapter Try da.FillByLikeQuery(micro, vsJobno) Catch ex As Exception MsgBox("Error Message") End Try End Sub So, the first function FillMicro() works. The second, FillMicro(jobno) returns nothing, even though there should be about 1200 rows. I'm not getting any error messages or crashes. It just returns 0 rows. I'll probably find the bug 5 minutes after I post this but for now I'm stumped. Anyone see anything wrong with this? Tag: TreeView Event Tag: 117713
  - 3
    - Can't remove highlighting when cursor is moved When I am editing code in VB.Net 2005 and I move my cursor, the code between where I was and where I now am stays highlighted. Pressing ESC does nothing. In order to continue, I must close the window and begin again, but as soon as I select text, the problem occurs again. I don't have this problem in the VB6 IDE or in Word. I have a second machine that uses the same mouse and keyboard through a switch and I don't have the problem in VB.Net on the second machine, so it's not the mouse or the keyboard. I need to be using the machine that's having the problem. Has anyone seen this before? If so, how do I fix it? Thanks in advance, Carol Tag: TreeView Event Tag: 117712
  - 4
    - dir net books .NET database dev questions http://freedownloadablebooks.blogspot.com/2008/03/net-database-dev-questions.html Some general quickies http://freedownloadablebooks.blogspot.com/2008/03/some-general-quickies.html .NET WebDev interview questions - Part 1 http://freedownloadablebooks.blogspot.com/2008/03/net-webdev-interview-questions-part-1.html .NET WebDev interview questions - Part 3 http://freedownloadablebooks.blogspot.com/2008/03/net-webdev-interview-questions-part-3.html Electronic engineer interview questions http://freedownloadablebooks.blogspot.com/2008/03/electronic-engineer-interview-questions.html C++ notes for discussion http://freedownloadablebooks.blogspot.com/2008/03/c-notes-for-discussion.html Tag: TreeView Event Tag: 117708
  - 5
    - Odd sizing problem I'm writing a Winforms app (Dot Net 2.0, VS2005, VB). I have a simple usercontrol with 2 panels on it, one with labels, one with a variety of editing controls, mostly datetimepickers and NumericUpDowns. A number of these usercontrols are then instantiated and put on a form in another project. The problem is this: The panel containing the controls is apparently expanding and increasing the space between controls, both height and width (so that part of it is hidden when the control displays). There is code that changes the width of the usercontrol itself and the position of the panel within the usercontrol, but no code whatever to change the width of the panel or height of anything. Autosize for the panel is False. What could I be forgetting? Tag: TreeView Event Tag: 117702
  - 6
    - Custom form with its own designer / OnPaintAdornments (VS2008) Hi everybody, I have a form (inherits from Form) that has its proprietary title bar and and a footer section. I'd like to prevent the user from placing any control in those areas. That is, I'd like to define a deviating area on which controls may be placed. If i.e. a TableLayoutPanel is placed on the form and the Dock-property is set to "Fill", this needs to be the area that I define. I was assuming that it'd be sufficient to create a Designer that (just as with other controls) utilizes OnPaintAdornments to define/restrict the area where controls can be dropped. However, my designer is simply being ignored - none of the events there are being fired!? The scenario roughly looks like the following: --- 8< --- <ToolboxBitmap(GetType(Form)), Designer(GetType(My_Form_Designer))> _ Public Class MyForm Inherits System.Windows.Forms.Form '... End Class Public Class My_Form_Designer Inherits ParentControlDesigner '... Protected Overrides Sub OnPaintAdornments( _ ByVal pe As System.Windows.Forms.PaintEventArgs) MyBase.OnPaintAdornments(pe) '... End Sub End Class --- 8< --- The above designer's code should react if I add a messagebox-line and create a new form MyForm in a project. Unfortunately, nothing happens at all (no matter where I place a messagebox). Hence, is there any additional things one needs to implement in order to create a forms-designer? Any other base-designer I need to use or interfaces I would need to implement? Also, why would the behaviour of a forms-designer differ from that of other controls? I found many references on the web that were geared at control designers, but none of them explicitly addressed forms ... Cheers, Olaf --- X-Posted, F'up to microsoft.public.dotnet.framework.windowsforms Tag: TreeView Event Tag: 117699
  - 7
    - Equivalency to TransparencyKey in WPF? When using a windows forms approach I can accomplish my goal - a portion of a window completely transparent so that it appears as though there is a "hole" in the application - I can do so in the following manner: 1 - Create Window, put Panel control on Window 2 - Set Window's TransparencyKey property to Pink 3 - Set Panel's background color to Pink This creates a see-through, "screen capture"-like look. There is, however, no TransparencyKey property on a WPF window. Is it possible to do this sort of thing in WPF? (I guess I could host a Windows Forms custom UserControl that does such a thing within a WPF window, but that seems a wee bit hoakie) Any advice appreciated! Tag: TreeView Event Tag: 117697
  - 8
    - Winform sql server app Hi I am new to sql server and need to build a one-many winform app with visual studio 2008 and sql server backend and need some pointers. I have the following questions; 1. If I create the app by creating a relationship between master and child tables in dataset and then dragging the master table and relation onto a form to auto generate everything, would that be a good enough way to cerate the app? If so, what more can I do to turn it into a robust enough app such as error handling etc? If this is not a good way to cerate app what should I instead do? 2. Is there a good book on the subject of vs2008/vb2008 and sql server 2005 specifically, that will me sufficient advise on how to develop the app? Many Thanks Regards Tag: TreeView Event Tag: 117695
  - 9
    - How to get text to fit inside a button Hi, I'm working with Visual Studio C# 2008 Express and I'm having the hardest time trying to get an 8.25f Microsoft Sans Serif font in a 70x18 pixel (width x height) FlatStyle.Popup button. The text just won't center to fit inside the button. The font gets chopped off at the bottom (because it doesn't want to perfectly center itself). Can someone else out there just try this to see what I mean? There's plenty of room in that button to fit that size text and it would save a lot of space in my app as I need several columns of these size buttons. It's just a Windows Forms App compiling to whatever Framework version Express defaults to (the latest, I presume). Thanks for the help! Tag: TreeView Event Tag: 117694
  - 10
    - uncheck a checkboxcolumn in datagridview I've got a checkbox column in a datagrid view that I'd like to be able to validate, and if they've checked this column, but something else needs to be done first, I want to be able to backout and uncheck the column. How do I do that? Private Sub dgvDetail_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvDetail.CellContentClick With dgvDetail.CurrentCell Dim colIndex = .ColumnIndex If (.OwningColumn.DataPropertyName = "AccountingAcceptance") Then If (Convert.ToBoolean(.EditedFormattedValue) = True) Then If (dgvDetail.CurrentRow.Cells("txtNetPaymentAmount").Value.ToString.Length = 0) Then If (MsgBox("Do you wish for the Net Payment Amount to be updated with the value from the Check Amount?", MsgBoxStyle.YesNo, "Net Payment Amount Needed") = MsgBoxResult.Yes) Then dgvDetail.CurrentRow.Cells("txtNetPaymentAmount").Value = dgvDetail.CurrentRow.Cells("txtCheckAmount").Value Else ' uncheck it End If End If End If End If End With End Sub Tag: TreeView Event Tag: 117693
  - 11
    - Interesting layout problem I have a rather interesting layout problem. At the moment I have a FlowLayoutPanel on a tab page. The size of the page may vary with the size of the window. The FlowLayoutPanel itself hosts a variable number of identically sized user controls. Autoscroll of the FLP is True. The idea, of course, is to smoothly fill the FLP horizontally no matter what the width of the FLP. So far, so good. Now I've been asked to change that. The powers that be want a left column of labels to match the individual controls on each of the user controls. (The controls of each usercontrol are arranged vertically.) I.e., if there were several rows of user controls, there would have to be a set of labels for each row. Even more interesting, they should stay parallel with their respective controls, no matter what the position of their row. In other words, they'd have to somehow stay in sync with their respective row while the user was scrolling the FLP up and down. Anyone ever do anything like this? (This is VB 2005.) Tag: TreeView Event Tag: 117691
  - 12
    - Storing form size To be user-friendly, I like to store the size and position of a window so that it can be opened in the same place the next time the user starts the app. Ideally, I would simply retrieve this information during the FormClosing event, but if the window is minimized at the time you get the minimized size and not the "restored" size. (The one thing I don't want to do is start the app minimized; it either opens at its last restored size or maximized.) Because of this I record the form's position and size during every Move or Resize event, but that seems clunky. Is there any way to ask (.NET framework method or API call, I don't care) a minimized window what its restored size and position are? Tag: TreeView Event Tag: 117681
  - 13
    - Timer in module Hi How can I use a timer in a module such that I can start the timer and then trap when timer has reached the interval? Many Thanks Regards Tag: TreeView Event Tag: 117677
  - 14
    - Currency manager changes position on endedit Hi I have a winform app with fields bound to a backbend db via a currency manager (System.Windows.Forms.CurrencyManager). The app generally works fine but in a specific instance where I select a value from a drop down control and then call the MyCurrencyManager.EndCurrentEdit(), to begin to try to save the record, the position of the currency manger becomes -1 which creates problem in saving and accessing the original record. What could be the problem and how can I debug this? Many Thanks Regards Tag: TreeView Event Tag: 117675
  - 15
    - Pausing a process without holding OS Hi I need to add pauses in-between processes in my app to give time to other users/processes on the network. Is there a way to pass control to OS for a specified time (say 15 seconds) to delay my app but at the same time not blocking OS's processor cycles? Thanks Regards Tag: TreeView Event Tag: 117673
  - 16
    - Docking framework of Visual Studio 2005 I had come across a link which mentioned that Microsoft has released the UI docking framework of Visual Studio 2005 which can be used in our projects... I am not able to find the link where this was mentioned and from where to download this VS2005 UI docking framework... Any idea? - Andrew Tag: TreeView Event Tag: 117672
  - 17
    - Component which contains a winform Sorry if my question may seems stupid but I'm just a beginner... I would like to ass a .net component which contains a winform inside it.The main program would use it by its will and the form would pops up (along with the functionality of the component). Is it possible? Regards Ronny. Tag: TreeView Event Tag: 117671
  - 18
    - Problem with forms MDI application I am building a MDI Windows Forms application where I have placed a splitcontiner. Using tabs I am trying to load different forms into the split container. Everything works fine, but for some reason the application hangs on exactly the 10th time a from is loaded into the splitcontainer (can repeat this). I have gone back to basics and removed all code from the child forms being loaded and still the applcaition hangs on the 10th time a form is loaded. If anyone can see any logic in why this is happening or can take a moment to look at the code below to se if I am doing something obvious wrong, that would be much appreciated Niclas Public Class Main Private Sub Lable1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Lable1.Click LoadForm(New frm1, SplitContainer1.Panel2) End Sub Private Sub Lable2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Lable2.Click LoadForm(New frm2, SplitContainer2.Panel2) End Sub Public Sub LoadForm(ByVal frmToLoad As Form, ByVal tab As Control) Try Dim Frm As Form For Each Frm In tab.Controls Frm.Dispose() Next Frm = frmToLoad Frm.TopLevel = False Frm.Parent = tab Frm.Show() Catch ex As Exception MessageBox.Show(ex.Message, "An error occured", MessageBoxButtons.OK, MessageBoxIcon.Exclamation) End Try End Sub Public Sub DisposePanelForm(ByVal TargetPanel As Panel) Dim f As Form For Each f In TargetPanel.Controls f.Dispose() Next End Sub Private Sub SideBar_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles Lable2.MouseEnter, Lable1.MouseEnter Dim lbl As Label lbl = CType(sender, Label) lbl.ForeColor = Color.Yellow End Sub Private Sub SideBar_MouseLeft(ByVal sender As Object, ByVal e As System.EventArgs) Handles Lable2.MouseLeave, Lable1.MouseLeave Dim lbl As Label lbl = CType(sender, Label) lbl.ForeColor = Color.White End Sub Private Sub Tab1_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles Tab1.Enter If SplitContainer1.Panel2.HasChildren = False Then LoadForm(New frm3, SplitContainer1.Panel2) End If End Sub Private Sub Tab2_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles Tab2.Enter If SplitContainer2.Panel2.HasChildren = False Then LoadForm(New frm4, SplitContainer2.Panel2) End If End Sub Private Sub Tab2_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles Tab2.Leave DisposePanelForm(SplitContainer2.Panel2) End Sub Private Sub Tab1_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles Tab1.Leave DisposePanelForm(SplitContainer1.Panel2) End Sub End Class Tag: TreeView Event Tag: 117670
  - 19
    - Interactive ColorDialog Is there a method to do unmodal ColorDialog? That a necessity to react on discoloration in ColorDialog yet to pressure on OK is. Event ColorChanged would walk up, but for some reason I him at ColorDialog did not notice http://www.alvas.net - Audio tools for C# and VB.Net developers Tag: TreeView Event Tag: 117664
  - 20
    - Office XP PIA problem on user PC My application uses Office XP PIA as the client runs various versions of it - from XP to 2007. It works for all but one PC (it has Vista with Office 2003 installed) - my application throws the following exception when trying to use Word.Application object: "Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' to interface type 'Microsoft.Office.Interop.Word._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00020970-0000-0000-C000-000000000046}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED))." I loaded an VS Express on the PC - when I look up the references - they refer to Word version 12.0 - which does not exist on the PC. Please help! Tag: TreeView Event Tag: 117663
  - 21
    - Windows XP Malicious Software Removal Update Malicious Software Removal July 2008 (KB890830) shows in the Review Update History that it has been loaded 9 TIMES. The yellow shield auto update icon continues to tell me that the update needs to be loaded. How can I get rid of the Auto Update Icon as I am certain this has been loaded and run in the background. It is not listed in Add/Remove programs but I do not think this gets into this list? Thanks for any help. Tag: TreeView Event Tag: 117662
  - 22
    - A few quick refresher questions about Windows Services I wrote one Windows Service app under dot net 1.1 about 5 years ago, as part of my web services cert. I've just been told to write a Windows Service program in VB, Dot Net 2.0. (Business as usual :-) So refresh my memory: 1. The installutil program is the only way to install a windows service? 2. It will probably be necessary to make it possible for a non-programmer to change a few settings. So far as I know, what I'll probably have to do is write a separate windows app to edit whatever sort of config file is used. If there's a better way to do this, please let me know. 3. To the best of my knowledge, this service is intended to monitor a directory and ftp any xml file that shows up to another computer. I have never done anything like this either, (I have never done anything with FTP in a Microsoft environment) although the code I've looked at seems simple enough. If there are any examples out there that do approximately that, please point them out. Thanks. Tag: TreeView Event Tag: 117659
  - 23
    - RDLC manual i want to know where can i download a PDF version of the reporting defination language RDLC? Tag: TreeView Event Tag: 117658
  - 24
    - Microsoft Report Viewer Control anyone has a code sample to connect the Microsoft Report Viewer Control using Microsoft SQL Server stored procedure? Tag: TreeView Event Tag: 117657
  - 25
    - PDF viewer anyone knows about a free .NET PDF viewer control? Tag: TreeView Event Tag: 117656
- Next
  - 1
    - splitter cursor i want to know how can i change the spilitter cursor? i mean the splitter line not the whole control.. Tag: TreeView Event Tag: 117655
  - 2
    - www.5pointsomeone.com hi this is my new web site www.5pointsomeone.com thank you Tag: TreeView Event Tag: 117652
  - 3
    - TableLayoutPanel scroll bar issues Hi . I am using a table layout panel with autoscroll = true I found several issues which dont seem to work properly 1. when I have more rows then in view and the vertical scroll bar is added it sometimes also adds the Horizontal scroll bar because it doesnt adjust the width properly and the scrollbar takes up part of the client area. This isnt consistent, sometimes the horizontal appears and sometimes it doesnt . 2. I have noticed something funny . I want to remove and add a control and while doing that I want to maintain the scroll position so I do int prevVal = m_TableLayoutPanel.VerticalScroll.Value; .... ADD AND REMOVE m_TableLayoutPanel.VerticalScroll.Value = prevVal; The funny thing is that if I call athe above line once it doesnt change the VerticalScroll.Value . IF I call it TWICE then the second time it does change the Value. so my code looks like this m_TableLayoutPanel.VerticalScroll.Value = prevVal; m_TableLayoutPanel.VerticalScroll.Value = prevVal; Andy idea why this happens ????????? Tag: TreeView Event Tag: 117650
  - 4
    - MDI child forms: how can one open another form? Hi, In an MDI Windows forms architecture, I have several child forms which I need to be able to open fellow child forms. How is this done? -- Thanks in advance, Juan Dent, M.Sc. Tag: TreeView Event Tag: 117646
  - 5
    - System.ComponentModel.Win32Exception: Error creating window handle. Hi All, I am using WinForm and .NET 2.2 framework in my application. My application mainly uses Infragistics WinGrid. I am extending infragistics grid to support some functionality by adding winform's toolstrip control (which intern hosted in a User Control) on Grid Headers. The way I extend this grid is by implementing Infragistic's IUIElementCreationFilter interface. This interface provides two methods, AfterCreateChildElements and BeforeCreateChildElements. The issue that I am facing is, when I load grid, I am getting following error and it kills my application. "System.ComponentModel.Win32Exception: Error creating window handle". This error occurs only when I set BackColor property of my user control to Transparent. If I do not set BackColor or set it to some color my application just works fine. I checked the number of window handles and also GDI Object count at the time this error is thrown. Window handle count is around 500 and GDI Object count is around 125. Also this error does not occur all the time. In my application I have several modules where I use infragisitcs WinGrid which in tern calls same implementation of IUIElementCreationFilter interface and the code work fine for other modules. I am not able to figure out as to why this issue is occurring sometimes and what is that causing it. During my investigation I found that adding user control with BackColor = Transparent into Grid's control collection invokes OnPaint event handler and which intern calls AfterCreateChildElements method in recursive way. AfterCreateChildElements method is called after an element's ChildElements have been created. The child element's can be repositioned here and/or new element's can be added. The stack trace is given below: System.ComponentModel.Win32Exception: Error creating window handle. at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp) at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.ControlCollection.Add(Control value) at Orion.Dashboards.DashboardPartControl.ShowAlert(Object sender, AlertRaisedEventArgs e) in C:\FRSDev\DevRoot\foundation61\Orion\Source\Common\Orion.Dashboards\Controls\DashboardPartControl.cs:line 1097 at Orion.Dashboards.DashboardPartControl.OnAlertRaised(Object sender, AlertRaisedEventArgs e) in C:\FRSDev\DevRoot\foundation61\Orion\Source\Common\Orion.Dashboards\Controls\DashboardPartControl.cs:line 986 at System.EventHandler`1.Invoke(Object sender, TEventArgs e) at Fusion.Windows.Forms.VirtualListGrid.RaiseAlert(Exception ex) in C:\FRSDev\DevRoot\foundation61\Fusion\Source\Presentation\Fusion.Windows.Forms\Widgets\VirtualListGrid.cs:line 1024 at Fusion.Windows.Forms.VirtualListGrid.OnPaint(PaintEventArgs pe) in C:\FRSDev\DevRoot\foundation61\Fusion\Source\Presentation\Fusion.Windows.Forms\Widgets\VirtualListGrid.cs:line 638 at System.Windows.Forms.Control.PaintTransparentBackground(PaintEventArgs e, Rectangle rectangle, Region transparentRegion) at System.Windows.Forms.Control.PaintBackground(PaintEventArgs e, Rectangle rectangle, Color backColor, Point scrollOffset) at System.Windows.Forms.Control.PaintBackground(PaintEventArgs e, Rectangle rectangle) at System.Windows.Forms.Control.OnPaintBackground(PaintEventArgs pevent) at System.Windows.Forms.ScrollableControl.OnPaintBackground(PaintEventArgs e) at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs) at System.Windows.Forms.Control.WmEraseBkgnd(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ContainerControl.WndProc(Message& m) at System.Windows.Forms.UserControl.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.IntCreateWindowEx(Int32 dwExStyle, String lpszClassName, String lpszWindowName, Int32 style, Int32 x, Int32 y, Int32 width, Int32 height, HandleRef hWndParent, HandleRef hMenu, HandleRef hInst, Object pvParam) at System.Windows.Forms.UnsafeNativeMethods.CreateWindowEx(Int32 dwExStyle, String lpszClassName, String lpszWindowName, Int32 style, Int32 x, Int32 y, Int32 width, Int32 height, HandleRef hWndParent, HandleRef hMenu, HandleRef hInst, Object pvParam) at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp) at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.ControlCollection.Add(Control value) at Fusion.Windows.Forms.FilteringCreationFilter.AfterCreateChildElements(UIElement parent) in C:\FRSDev\DevRoot\foundation61\Fusion\Source\Presentation\Fusion.Windows.Forms\Widgets\FilteringCreationFilter.cs:line 106 at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UltraWinGrid.RowColRegionIntersectionUIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UltraWinGrid.DataAreaUIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UltraWinGrid.UltraGridUIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive) at Infragistics.Win.UIElement.VerifyChildElements(Boolean recursive) at Infragistics.Win.ControlUIElementBase.VerifyIfElementsChanged(Boolean verify, Boolean syncMouseEntered) at Infragistics.Win.ControlUIElementBase.get_CurrentCursor() at Infragistics.Win.UltraControlBase.get_Cursor() at System.Windows.Forms.Control.WmSetCursor(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) A first chance exception of type 'System.ComponentModel.Win32Exception' occurred in System.Windows.Forms.dll A first chance exception of type 'System.ComponentModel.Win32Exception' occurred in System.Windows.Forms.dll Error creating window handle. Please let me know incase anyone has any clue or idea as to how to proceed on resolving this issue. Thanks in advance, -Tushar Tag: TreeView Event Tag: 117643
  - 6
    - Fancy Windows Form I started using Windows Live Mail and really like the main form design. I was wondering if anyone knew what tools were used to develop that kind of form. It is a lot like the new MS Office forms with very customized title bar and buttons. TIA Larry Tag: TreeView Event Tag: 117642
  - 7
    - Protected forms and cell growth Hi, I have a protected form with lots of areas for data entry (comments, goals, etc.). I formatted the cells to wrap but the cell does not resize itself when lots of information is entered. Is it possible to have the cell grow as data is entered? Kathleen Tag: TreeView Event Tag: 117641
  - 8
    - complicated forms design How others have approached having extremely large forms that duplicate database structures. I am currently designing an application with a lot of tables and a lot of controls. Problem is that the forms are very much overloaded and therefore my basic structure is very wrong. I have about 40 database tables, a few forms, multiple tabs on each with moderately complicated layout on each tab. You can imagine the whole design, number of events, and how it ends up. How have others managed this sort of complicated design? Do you break off the database into a separate class, how can you keep this visual? Can you layout a tab on its own visually and then embed in the actual form at runtime. Ta Ken Tag: TreeView Event Tag: 117640
  - 9
    - Changing the Form Default BackColor at Runtime I have a program that have over 10 forms in it. The BackColor for each form defaults to System.Drawing.SystemColors.Control. How can I override or change what that color is? Basically what I would like to do is have different color schemes available to the user without having to program each and forms/controls in the application. How can I build a new color pallete that will override the SystemColors without affecting the base OS color scheme. Thank you. Tag: TreeView Event Tag: 117636
  - 10
    - ObjectDisposedException Hi, I have an invisible button in my form. I have a timer (System.Windows.Forms.Timer) with interval 300 ms. In the timer tick event I check for a certain flag, and if that flag is true, the button becomes visible (After setting the flag's status to false again). The problem is that if the event happened and the button became visible, and then I closed the form, and then reopened it and let the event happen again, then the operation of making the button visible throws an exception of type System.ObjectDisposedException. It looks like when I reopen the form, I already haven't got the button. One could think it's been Garbage Collected, but I'm not sure about that, because the button is part of the form which is reopened (Form f = new Form(); ). Can someone please explain the source of the problem and the solution? Thanks a lot Tag: TreeView Event Tag: 117632
  - 11
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    - Click Once FORCES signing We have a couple of apps on our intranet, needing only to be published within our network, so we don't need signing On one developer's computer, every time we try to Publish the application, (even though we UNCHECK the signing checkbox in the Signing tab), it automatically checks it again, and then, because it's not signed, will throw an error and not publish. Any ideas on where there might be a setting so I can stop this behavior? Tag: TreeView Event Tag: 117629
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  - 15
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  - 16
    - getting the connectionstring from app.config Hi, I have a windows forms c#.net app and I want to get the connection string from my app.config file which is shown below: how do I achieve this Thanx in advance Robert <configuration> <configSections> </configSections> <connectionStrings> <add name="DataAccess.Properties.Settings.MARSConnectionString" connectionString="Data Source=LON-OXBRD01;Initial Catalog=MARS;Integrated Security=True" providerName="System.Data.SqlClient" /> </connectionStrings> </configuration> Tag: TreeView Event Tag: 117624
  - 17
    - listview offset I have a listview with large icons. When user clicks, say the top left of an icon, and in the mouse down event i have Point p = listview1.PointToClient(new Point(MousePosition.X, MousePosition.Y)), if I then compare p to listviewitem.Position, where listviewitem is the icon the user clicked, then in some cases the two points aren't equal. Anyone that can explain why this offset exists and is there a way to know what this offset would be? i.e. is there e.g. a property of the listview that holds this? Tag: TreeView Event Tag: 117620
  - 18
    - ClickOnce deployment gets messed up after going from 2.0 to 3.5 Hi yall! I got a locally published website and client (deployed by ClickOnce) that I install on several servers. I'm using mage.exe to update and re-sign the application and deployment manifests. Everything worked like a charm when using 2.0 Now we moved to 3.5 and I updated mage.exe and added the now necessary Microsoft.Build... assembly. The whole resigning process worked fine, but when I try to install the client on a fresh machine, I get the following following error: Code: ERROR DETAILS Following errors were detected during this operation. * [07.07.2008 13:52:14] System.Deployment.Application.InvalidDeploymentException (ManifestSemanticValidation) - Application contains an assembly with the same identity as the application or deployment: PcVclient.application, Version=1.2.99.0, Culture=neutral, PublicKeyToken=b2cb5e85fcd37978, processorArchitecture=msil. - Source: System.Deployment - Stack trace: at System.Deployment.Application.DownloadManager.ProcessDownloadedFile(Object sender, DownloadEventArgs e) at System.Deployment.Application.FileDownloader.DownloadModifiedEventHandler.Invoke(Object sender, DownloadEventArgs e) at System.Deployment.Application.FileDownloader.OnModified() at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next) at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles() at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState) at System.Deployment.Application.DownloadManager.DownloadDependencies(SubscriptionState subState, AssemblyManifest deployManifest, AssemblyManifest appManifest, Uri sourceUriBase, String targetDirectory, String group, IDownloadNotification notification, DownloadOptions options) at System.Deployment.Application.ApplicationActivator.DownloadApplication(SubscriptionState subState, ActivationDescription actDesc, Int64 transactionId, TempDirectory& downloadTemp) at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState& subState, ActivationDescription actDesc) at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension) at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state) Any ideas, hints, tipps much appreciated. Thanks for reading tat far. Cheers, Nessi Tag: TreeView Event Tag: 117614
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    - Designer Coach Signature Demi Pouch - Plum Red 6094red Handbags, Designer Coach Signature Demi Pouch - Plum Red 6094red Handbags, Luxury, Best,Inspired Designer Handbags : http://www.bagsbrand.com Coach Signature Demi Pouch - Plum Red 6094red Link : http://www.bagsbrand.com/Coach-6094red.html Brand : Coach ( http://www.bagsbrand.com/Coach-Handbags.html ) Model : 6094red Coach Signature Demi Pouch - Plum Red Details : Leather and cavasInside it has a single pocketComes with serial numbers authernticity Card,dust bag, and care booklet Size: 8" x 5 1/8" x 2" Coach Signature Demi Pouch - Plum Red 6094red : http://www.bagsbrand.com/Coach-6094red.html Tag: TreeView Event Tag: 117613
  - 20
    - Application exiting before doing what it should do Hi My app involves an Infragistics control but as problem seems to be more with how vb.net works when using SUB Main so I am posting it here nevertheless. I want my app to pick up the first command line argument, pass it to infragistics desktop alert control to display and then exit. My code is given below. Problem is that app exits as soon as it is run and desktop alert does not get time to be displayed. However the same alert displays fine if I use start-up form (instead of SUB Main) and use a button on form to run the ShowDesktopAlert SUB. What is the problem and how can I make it work using SUB Main? Thanks Regards Module modMain Friend WithEvents dalMain As New Infragistics.Win.Misc.UltraDesktopAlert Sub Main(ByVal sArgs() As String) Dim Tel As String = "" Dim Caption As String = "" If sArgs.Length > 0 Then Tel = sArgs(0) Caption = "Incoming Staff call " & Tel ShowDesktopAlert(Caption, "Goto contact?") End If End Sub Sub ShowDesktopAlert(ByVal Caption As String, ByVal Msg As String) dalMain.Show(Caption & ":" & Msg, "Click here to go to contact record.") Application.DoEvents() End Sub End Module Tag: TreeView Event Tag: 117608
  - 21
    - Using Sub Main with application framework Hi How can I use Sub Main (instead of start-up form) while still be able to use application framework? At present it seems I can have one or the other. I need it for an app that does not have a UI. Thanks Regards Tag: TreeView Event Tag: 117606
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    - Dot Net Viewers http://ganesh-freedotnetbooks1.blogspot.com http://ganesh-freedotnetbooks.blogspot.com http://freefreedownloadsoftwares.blogspot.com Tag: TreeView Event Tag: 117603
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    - Display 2 decimal point How do you display a double value in 2 decimal point? For e.g., the value 2.2, I want to display it as 2.20 instead of 2.2. I tried System.Math.Round(thevalue,2), but it still display the value as 2.2 and not 2.20. I using .NET 2.0 Framework, Visual Basic. Thank you. Tag: TreeView Event Tag: 117598
  - 24
    - Flicker in with Layered Windows I am displaying a semi-transparent dialog window (Opacity=50%) over another window. Whenever the background window is Invalidated, it causes a flicker in the foreground layered window. For example, an animated gif will cause this flicker in any region of the layered window that is over the animation. Is there any solution to this? (fyi, double-buffered doesn't do anything. Setting Opacity=100% resolves this but then i lose the semi-transparency) Tag: TreeView Event Tag: 117596
  - 25
    - Dotnet Viewers http://ganesh-freedotnetbooks1.blogspot.com http://ganesh-freedotnetbooks.blogspot.com http://freefreedownloadsoftwares.blogspot.com Tag: TreeView Event Tag: 117594

Can anyone tell me how can I register the "onDoubleClick" on the last node
of each level of a TreeView. I use C# as programming language.

Thanks
George

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Re: TreeView Event by Bofors

Bofors
Thu Jul 17 23:07:30 CDT 2008

You can register your handler on Double click event and in the handler code
ignore and do nothing if its not the last node in the level.

"George" <gvarelas@casinorio.gr> wrote in message
news:C9FCDD86-3BDD-45CC-B3EA-BC41E3ECCFB4@microsoft.com...
> Can anyone tell me how can I register the "onDoubleClick" on the last node
> of each level of a TreeView. I use C# as programming language.
>
> Thanks
> George

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