Controls Hide/Show display performance

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- Previous
  - 1
    - Display html page in winform(.NET 2.0) Hi, I have some html codes, and I need to present the rendered html page to user in winform program. I cannot find a helpful control in .NET framework. How to do that in .NET 2.0? Thank you Tag: Controls Hide/Show display performance Tag: 111626
  - 2
    - combobox with command items Hi I want to have a combobox with some commands in it and a data source. Basically the list should look like command1 command2 ----------- data1 data2 data3 To solve this problem i decided to derive my own combo box form standard ComboBox control. I exposed 2 properties in this class 1) List of CommandItems 2) ArrayList as data source Now i tried to merge these 2 sources as 1 source and set the data source for the base class. I also set the DrawMode to OwnerDrawVariable and subscribed to DrawItem event. I thought that i would be able to draw the items on my own. This way i am able to insert the separator between command items and the data items. However when i do this i am unable to set the DisplayMember of the combobox it doesn't work at all. Additionaly i also am thinking even if i am able to do that it has to be different for data list and the command list. Any ideas on how can i achieve this ? ~Abhishek Tag: Controls Hide/Show display performance Tag: 111617
  - 3
    - Shown method for User control Hi, Is there any event like Shown for User Control? I am instantiating User control once and adding and removing to and from parent form panel dynamically. I wanted a event which would fire every time the User control is shown (when added to parent from panel) like Shown event is for Form. Thanks. Tag: Controls Hide/Show display performance Tag: 111616
  - 4
    - Anchoring issue. Lets say I have a control at the bottom of my form and I have it set to anchor Top, Bottom, Left, Right That does exactly what I want it to do.... Ok here's my issue. I have recently taken the contents from that form and placed them on a user control instead. I set the output type to dll for the project with the user control. I implement my own interface, compile, and then place the dll in a plugins directory of my host app. My host app then rakes the directory, finds any types that implement the interface and when it finds one it loads that user control as a new tab in the host apps tab control. The interface requires that there be an init function. The host always runs this when it finds the dll and passes in DB information. Inside the init function I have tried to also set the user controls anchor like so: this.Anchor = ((System.Windows.Forms.AnchorStyles) ((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right))); I'm not sure if the syntax is 100% in this posting because I've commented and uncommented and recommented so many times trying different combinations. Just know that I'm setting it the same as if I were using the designer. Top, Bottom, Left, Right... Now the Host app has a tab control as I've already stated. It has it's anchor set to Top, Bottom, Left, Right so that it expands if the form does. Now when it loads, everything runs off the screen. So let me lay out the context more clearly: Host Form - Tab control - Anchor Top, Bottom, Left, Right - User Control found at runtime - Anchor Top, Bottom, Left, Right - Control - anchro Top, Bottom, Left, Right I can create the same app with just a tab control and place the end control right on a new tab page and anchor it. That works as expected and everything expands as it should. but once I put the control on a user control and then load that dynamically into the tab control setting it's anchor, everything expands way off to the right and bottom. Any help would be great!!!!!!!!!!!!!!!!!!!!!! Tag: Controls Hide/Show display performance Tag: 111615
  - 5
    - need help on regex hi, i'm a newbie to regex.... i need to check if a given string has more than two occurences of . in the begiining of string for ex, if string has value .test is valid but ..test is invalid Can you help me out with the pattern for such strings? Tag: Controls Hide/Show display performance Tag: 111611
  - 6
    - Check these dotnet links Hi There are lot of sites providing good content on dot net.. here are a few links I visited recently and found good.. http://maximumcoding.blogspot.com/ http://dotnetinterviews.blogspot.com/ http://www.xcessdotnet.com/ http://techinterviewquestion.blogspot.com/ http://dotnetforum.blogspot.com/ Enjoy :) Ayesha Tag: Controls Hide/Show display performance Tag: 111607
  - 7
    - How can I use C++ codes with .NET Framework codes? I would be pleased if someone gives me a general idea; how I am going to do this. I am using visual C++ .NET 2003. I made a simple program using conventional C++ code. This program accepts data from the user, does some calculations and outputs the result back to the user using the console. Now, I want to use the .NET Framework to interact with the user through Forms, Dialog Boxes and Controls. I managed to create all the forms that I need to interact with the user and they work very well together. But, now I want to use the first program that I made from conventional C++ with .NET Framework. In other words I want the user to input data (through Forms and controls) and then I want to manipulate the data mathematically (using the conventional C++ code) and out put the result (through other Forms and controls). So my question is how can I use the conventional C++ code with the managed code and which file(s) am I going to use? For example, I have the following files:- References: .. .. Source Files: AssemblyInfo.cpp Form1.cpp Form2.cpp Form3.cpp Stdafx.cpp Header Files: Form1.h Form2.h Form3.h Resource.h Stdafx.h Resource Files: .. .. .. ReadMe.txt Allen Tag: Controls Hide/Show display performance Tag: 111597
  - 8
    - How to tell if file is text based I want my application to load any file that is text based (php, txt, rtf, asp, etc) - - just not any binary file In the Open file dialog, that's easy, but I want users to be able to load the files by drag/drop - - so therefore, I will need to check for the types of files. I could go through the different filetypes if FILENAME.endswith(".txt"), etc, but that would end up being pretty ridiculous How can I check the file, as it comes in, as to whether it's text based or binary? Tag: Controls Hide/Show display performance Tag: 111595
  - 9
    - WPF Picture drag/scroll like Google Map Hi Guys, Just wondering if the WPF has a control to move picture on a form like google map? I know in .net 2 the picturebox doesn't have scroll function... Thanks James Tag: Controls Hide/Show display performance Tag: 111593
  - 10
    - PNG as Form background Hi, Do you know how to enable the use of a PNG as a form background and hence enable per pixel alpha transparency ? I have found some code on the code project but it either does not work with Visual Studio 2005 (the form editor stops working because I need to inherit from a Form derivate) or I get a completely transparent application. Thanks for the help. Tag: Controls Hide/Show display performance Tag: 111587
  - 11
    - Help with loaidng image into STATUSSTRIP item I need to load an image from my resource file into my STATUSSTRIP item. Please correct this... Me.stiConsole1.Image = My.Resources.mts_stbr_ico_service_offline_16.ToBitmap TIA John Tag: Controls Hide/Show display performance Tag: 111583
  - 12
    - How to get mouse button state at any time? I mean, to know if mouse button is pressed, especially, at any time. thx. Tag: Controls Hide/Show display performance Tag: 111582
  - 13
    - How to completely prevent captured mouse from getting grabbed by others? If one control has already captured the mouse, how to completely prevent the mouse from getting captured by any other controls (objects), even if a dialog popups, for example. thx. Tag: Controls Hide/Show display performance Tag: 111581
  - 14
    - MaskedTextBox with negative double numbers I am trying to use a MaskedTexBox to accept positive and negative DECIMAL/DOUBLE numbers. I tried by setting the Mask to a custom mask of "0000.00" but that allows for no negatives. I tried with "+00000.00" but the same problem. According to the documentation there is a design variable ValidatingType. But at least in VC# Express 2005 such property does not appear in the list of properties at design time! So what I did was to manually set the ValidatingType to typeof(double) in the constructor. But the same problem persists. Any ideas? or was this some great half-baked idea? Tag: Controls Hide/Show display performance Tag: 111580
  - 15
    - TreeView control Hi, I need bind a Treeview control in my windows form with xml file and also,,, display icons for each tree node.... how can I acheive it? Tag: Controls Hide/Show display performance Tag: 111579
  - 16
    - Changing the focus rect of a button Hi, Is it possible to change the appearance of the focus rect of a button. More specifically when the button is flat the focus rect is different then in other style (a straight rectangle instead of a striped line) and i would like it to be striped as well. Can it be done without painting whole the button by myself? If not - is it possible to just remove the focus rect? Thanks, Toby. Tag: Controls Hide/Show display performance Tag: 111574
  - 17
    - Value in ListBox.Items.Add Hi, How do I add items in ListBox in VB.NET with the value; ListBox.Items.Add("Text") only assign the text instead of the values. Thnx Tag: Controls Hide/Show display performance Tag: 111572
  - 18
    - MDI Child Window Toolstrip does not go away Hi, I have an MDI child window with a toolstrip contained in a ToolStripContainer. The MDI parent also has a Toolstrip contained in another ToolStripContainer. If I drag my ToolStrip onto the parents ToolStripContainer and then close the child window, the toolstrip does not go away. This is not a merge issue. I am not using merge. What is the usual way to handle child window toolstrips in an MDI? regards, T Tag: Controls Hide/Show display performance Tag: 111570
  - 19
    - BeginInvoke failing when executed in a form that was created in a worker thread... I previously posted this in the VB.General forum, but thought that this one might be a better place for it...sorry about the double post. I have created a simple form with code that looks like this: '****************************************************************************************** Public Class FEventRaiser Inherits System.Windows.Forms.Form Event MyEvent(ByVal eventName as string) Private Delegate Sub EventRaiserDelegate(ByVal eventName As String) Public Sub New() ...other code removed for clarity. 'Force the creation of the form's handle. While Not IsHandleCreated Dim temp As IntPtr = Handle End While End Sub Public Sub RaiseAnEvent(ByVal eventName As String) If Me.InvokeRequired Then 'Call made on thread different from the thread this form was created on...BeginInvoke. Me.BeginInvoke(New EventRaiserDelegate(AddressOf RaiseAnEvent), New Object() {eventName}) Else 'Call made on same thread as this form was created on...raise the event. RaiseEvent MyEvent(eventName) End If End Sub End Class '****************************************************************************************** If I create an instance of this form from within another form, and then make calls to 'MyRaiseEvent' from within a threaded timer, it works as I would expect: Public Class Form1 Inherits System.Windows.Forms.Form ... Private WithEvents mEventRaiser as FEventRaiser Private WithEvents mTimer as System.Timers.Timer ... mEventRaiser = New FEventRaiser mTimer = New System.Timers.Timer(1000) mTimer.Enabled = True ... Private Sub mEventRaiser_MyEvent(ByVal eventName As String) Handles mEventRaiser.MyEvent 'This event is handled on the same thread that this form's message pump is running on. Debug.WriteLine("Event processed on thread: " & AppDomain.GetCurrentThreadId) End Sub Private Sub mTimer_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs) Handles mTimer.Elapsed mEventRaiser.RaiseAnEvent("This Works") End Sub End Class Even though the timer event handler is firing on different thread IDs than the main thread, the call to the mEventRaiser.RaiseAnEvent ends up performing the necessary BeginInvoke, which results in mEventRaiser raising an event back on the main thread...this is the behaviour I would expect (and want). If I then modify this code somewhat so that the mEventRaiser is actually created once in the timer event handler, then it all stops working (please ignore the hack method I used for instantiating the CEventRaiser object...the real way it's done is in a worker thread created at the same time the threaded timer is created). Here's the new timer event handler: Private Sub mTimer_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs) Handles mTimer.Elapsed If mEventRaiser Is Nothing Then 'One-time creation of event raiser. It used to be created in the main thread, but now it's created in 'the context of the timer's first-time-firing thread. mEventRaiser = New FEventRaiser End If 'As before...ask event raiser to raise event. This no longer works. The BeginInvoke in the RaiseAnEvent call 'does nothing. mEventRaiser.RaiseAnEvent("This doesn't Work") End Sub End Class I hope you can makes sense of this code, and any insight you can provide would be greatly appreciated. Tag: Controls Hide/Show display performance Tag: 111565
  - 20
    - Dbl-Click to load a file when app is already running I'm using the GetCommandLineArgs (VB.Net 2005) in my form load event GetOutsideFile(Environment.GetCommandLineArgs()) so that, when I have files associated with my app, and double click on a file, they will run the app and load the file in it. However, when the app is already loaded, double-clicking on a file will not load it, since the application is already running, and the only reference is in the frmMain's load subroutine. What do I need to do inside my app, to make this possible? Tag: Controls Hide/Show display performance Tag: 111554
  - 21
    - ListBox crash when accessing SelectedIndex property. Can anyone please tell me how it is possible to get the following crash when accessing ListBox.SelectedIndex property: Message: Index was outside the bounds of the array. Stack Trace: at System.Windows.Forms.ListBox.ItemArray.GetEntryObject( Int32 virtualIndex, Int32 stateMask) at System.Windows.Forms.ListBox.get_SelectedIndex() It is not possible to use the ListBox.SelectedIndex = <some bad value> to put a bad value in there (I've tried and this causes an immediate exception), so I just can't see how the above crash is possible. The list box is sometimes set to be SelectionMode of MultiExtended, but the documentation does not say SelectedIndex is invalid with this mode. Can anyone please help? Thanks in advance, Valerie Hough Tag: Controls Hide/Show display performance Tag: 111549
  - 22
    - weird problem with ComboBox - DataSource contains data, but the Items collection stays empty I created a custom control which simply is a data-bound ComboBox. It has a custom property that causes an ArrayList of KeyValuePair elements to be passed to the DataSource property. It also sets the DisplayMember and ValueMember properties. What's weird, is the fact that my control sometimes works fine and sometimes it doesn't. I have no idea why, but when I put on Form1 everything is fine, while on Form2 the Items collection stays empty, although the DataSource property contains data and it is exactly the same data (pulled from the database in the same way) that I use in case of Form1. I tried to use a DataTable instead of an ArrayList, but it changed nothing. Does anybody have any suggestions? Tag: Controls Hide/Show display performance Tag: 111546
  - 23
    - decimal separator, regional settings Hello there! Here is my problem, in the simplest scenario: - an Access 2000 format database (created with Access 2003) - a simple table that contains one single field defined as Number, Decimal, 18,2 - VS2005 standard, C# - a data source / dataset that cotains that simple Access table - a DataGridView, created by drag and drop, with all the helper objects (adapter, navigator etc) that edits that simple table - WinXPSP2 with ***Regional Options in Control Panel set to Romanian*** , with no other customization And here's the problem: what magic do I have to do to enter decimal numbers in that grid and save them in the database? Because as long as I type in 1,23 (given that the decimal separator in Romanian Regional Options is the comma), the grid displays it correctly, I can save it to the daabase, but when I reload the data by reopening the form, my number is 123 (and it really IS 123 in the database!). Thanks in advance. pax Tag: Controls Hide/Show display performance Tag: 111545
  - 24
    - How can I copy to the clipboard the contents of cells in a DataGri Hi, I have a DataGridView from Windows.Forms and need to be able to copy the contents of the current cell to the clipboard, yet have not found the way to do so. Any pointers will be very appreciated. -- Thanks in advance, Juan Dent, M.Sc. Tag: Controls Hide/Show display performance Tag: 111544
  - 25
    - HttpWebRequest and Vista Business I am using the following code to send a request to a web site. It works fine on XP and Vista Home, but on a machine running Vista Business it gives the error, ConnectFailure. I can browse to the site in IE7 on the same laptop with no problem. This code works fine on other computers on the same network. There is a firewall there, but no proxy. Are there any know issues for this scenario? -Dave HttpWebRequest req; req = (HttpWebRequest)WebRequest.Create("https://" + Global.WebServer + Global.WebPath + serverUrl); req.AllowWriteStreamBuffering = true; req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; req.Timeout = Global.InetTimeout * 1000; req.SendChunked = true; req.Proxy = HttpWebRequest.DefaultWebProxy; ASCIIEncoding encodedData = new ASCIIEncoding(); byte[] btPostData; btPostData = HttpUtility.UrlEncodeToBytes(encodedData.GetBytes(postData)); Stream reqStream = req.GetRequestStream(); reqStream.Write(btPostData, 0, btPostData.Length); reqStream.Close(); HttpWebResponse resp = (HttpWebResponse) req.GetResponse(); Tag: Controls Hide/Show display performance Tag: 111542
- Next
  - 1
    - Expired certificates in the clickonce manifest. My VB apps written in Visual Studio 2005 are starting to have their certificate expiration date older than the current date. If I create or use a newer certificate I have to uninstall the app and reinstall. Is there a way to fix an expired certificate without uninstalling? Tag: Controls Hide/Show display performance Tag: 111541
  - 2
    - No more type ahead searching for treenodes in VS 2005? In Visual Studio 2003 one of the default treeview behaviors I relied on was the ability to do type ahead searching for treenodes. Like if my treeview had nodes for the fifty states, typing "ark" would make the treeview select the Arkansas node. But, now that I've upgraded my project to VS 2005, typing "ark" makes the treeview select Alabama, then Rhode Island, then Kansas. Has anyone else noticed this? I'm hoping there's some property I haven't found yet to get that functionality back.. Thanks! Kevin Tag: Controls Hide/Show display performance Tag: 111540
  - 3
    - Show Datasource for all pivot tables Does any one know how to show all datasouces for each of the 15 pivot tables in my spreadsheet? I have 15 pivot tables and want quickest way to find what the datasource is for each one Tag: Controls Hide/Show display performance Tag: 111538
  - 4
    - Installing VS 2003 after VS 2005 Hey guys, Is it possible to install VS 2003 on a machine that already has VS 2005 installed? I am not sure what the ramifications would be. Would VS 2003 overwrite newer components that VS 2005 installed or mess up file associations, etc.? Are there any other things that I need to look out for? Any tips are greatly appreciated. Thanks. Tag: Controls Hide/Show display performance Tag: 111537
  - 5
    - Settings for Windows Service I have a requirement to create a windows service application that will need have settings (e.g. list values, connection settings, etc.) stored externally (i.e. not hard coded). To allow administrators to manage the settings I'll be creating a windows form application, very simple one, that will run in the system tray and when a setting needs to change (once in a blue moon) the administrator can right click and change/add a setting through a dialog window. The dialog will give the user the ability to restart the service so the settings can be read by the service at start up again. Here is my question. To store the settings i'm inclined to add an app.config to the windows service and have the windows form app read/save settings to the config file. What is the most appropriate and proper way to handle something like this? -- -Demetri Tag: Controls Hide/Show display performance Tag: 111535
  - 6
    - Teredo tunnelling pseudo interface I just checked in 'Device Manager' to see if everything was OK, and saw a question mark against Teredo tunnelling pseudo interface. When I clicked on properties I got the message - 'Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)' When I clicked on 'check for solutions online, it appears to check, then nothing happens. Any advice or help would be appreciated, Thanks, John. -- John McGoldrick Tag: Controls Hide/Show display performance Tag: 111529
  - 7
    - UserControl inheritance and the designer I've created a base class from which many usercontrols will inherit. The base class contains declarations for controls and event handlers. A derived user control contains the actual form controls (labels, textboxes, etc.). Everything seems to be working fine at run time but at at design time, the designer cannot display the derived control unless I place declarations for the various form controls in the designer code. See the code below for an example. Note that if I remove the comment from the line 'Friend Shadows Label1 As Label in the derived control, the designer is happy and works fine but of course this effectively breaks the link between the controls and their handlers in the base class. If I retain the comment, the designer gives the error "The variable 'Label1' is either undeclared or was never assigned." How do I overcome this? Is there a way that I can fool the designer without commenting/uncommenting code? Am I simply doing this all wrong? Bill E. Hollywood, FL '--------- Base Class --------------- <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ Public Class basecontrol1 Inherits UserControl 'Required by the Windows Form Designer Protected components As System.ComponentModel.IContainer Protected WithEvents Label1 As System.Windows.Forms.Label Public Sub New() 'Instantiate End Sub Protected Overridable Sub Form_Load(ByVal obj As Object, ByVal e As EventArgs) Handles Me.Load If Not (Label1 Is Nothing) Then Label1.Text = Me.Name End If End Sub Protected Overridable Sub Label1_Click(ByVal obj As Object, ByVal e As EventArgs) Handles Label1.Click MsgBox("Hello") End Sub End Class '---------- Derived UserControl ----------- <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ Partial Class control1 Inherits basecontrol1 'Friend Shadows Label1 As Label <System.Diagnostics.DebuggerStepThrough()> _ Private Sub InitializeComponent() components = New System.ComponentModel.Container() Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.SuspendLayout() ' 'Label1 ' Me.Label1 = New System.Windows.Forms.Label Me.Label1.AutoSize = True Me.Label1.Location = New System.Drawing.Point(12, 16) Me.Label1.Name = "Label1" Me.Label1.Size = New System.Drawing.Size(66, 13) Me.Label1.TabIndex = 0 Me.Label1.Text = "This is a test" Me.Controls.Add(Me.Label1) End Sub End Class Public Class control1 'Inherits basecontrol1 Protected Overrides Sub Label1_Click(ByVal obj As Object, ByVal e As EventArgs) MsgBox("I've been overridden") End Sub End Class Tag: Controls Hide/Show display performance Tag: 111528
  - 8
    - seems pretty simple but.. maybe not. (if this is the wrong ng, plz point me to the right one).. i'm trying to add simple text find capability to a tool at work and am having problems. i want it to work just like Notepad - that is the Find dialog remains in focus after clicking the Find button and at the same time, the found text in the edit control is hilited and remains so even while the edit control does not have focus. i can get the text to hilite alright but it's only visible if i set focus to the edit control just after calling the Find method. this is totally opposite of what Notepad is doing. does anybody have any idea how Notepad accomplishes this? Tag: Controls Hide/Show display performance Tag: 111523
  - 9
    - Running ReportViewer report in another thread using BackgroundWorker Hi: I'm trying to give user something to look at while a ReportViewer based report runs. It takes a while because app connects to data over the internet. Problem is report locks-ups when launched in DoWork event. Backgoundworker seem to work with non-visual stuff. Is the problem because report renders in a Window? A simpler approach is just pop-up a nonmodal form and release after report finishes. That works, but controls look transaparent. Thanks, Charlie Tag: Controls Hide/Show display performance Tag: 111521
  - 10
    - Get window's taskbar coordinate Hello all, I found it very difficult to find out how to get that taskbar's coordinates so here it goes...if it can help some of you save some time then it is worth sharing it! :-) --> See the VB function below <-- Cheers! ---- Sylvain Audet Senior .NET developer Shopping-Quebec.com -------------------------- BEGINNING OF FUNCTION ----------------------------- Private Function GetWindowsTaskBarRectangle() As Rectangle Try Dim pt As Point = Cursor.Position ' Where the NotifyIcon is located Debug.WriteLine(pt) Dim ps As Screen = Screen.PrimaryScreen ' Total screen size Debug.WriteLine(ps.Bounds) ' Working area, excludes taskbar, MS Office bar, etc. Debug.WriteLine(ps.WorkingArea) Dim taskBar As Rectangle If ps.WorkingArea.X > 0 Then 'Taskbar is left-docked taskBar = New Rectangle(ps.Bounds.X, ps.Bounds.X, ps.WorkingArea.X, ps.Bounds.Height) ElseIf ps.WorkingArea.X = 0 AndAlso ps.WorkingArea.Y = 0 And ps.WorkingArea.Width = ps.Bounds.Width Then 'Taskbar is bottom-docked taskBar = New Rectangle(ps.Bounds.X, ps.WorkingArea.Height, ps.Bounds.Width, (ps.Bounds.Height - ps.WorkingArea.Height)) ElseIf ps.WorkingArea.X = 0 AndAlso ps.WorkingArea.Y = 0 Then 'Taskbar is right-docked taskBar = New Rectangle(ps.WorkingArea.Width, ps.Bounds.Y, (ps.Bounds.Width - ps.WorkingArea.Width), ps.Bounds.Height) Else 'Taskbar is top-docked taskBar = New Rectangle(0, 0, ps.Bounds.Width, (ps.Bounds.Height - ps.WorkingArea.Height)) End If Return taskBar Catch ex As Exception MessageBox.Show(ex.Message) End Try End Function -------------------------- END OF FUNCTION ----------------------------- Tag: Controls Hide/Show display performance Tag: 111519
  - 11
    - Application type question Hi My vb winform app updates between site sql server and in house access db. The app needs to always run and is in the start-up of client's sbs 2003 (windows 2003) server. Problem is if client restart server and forget to login the app does not run. I am resisting doing it as a service as a service has some development restriction as well as installation complications making it difficult to debug too among other things. What is the best solution to this situation? Should I go the service route? In which case is there an easy way to convert a winform app (with a visible form - for monitoring purpose) to service type app? Thanks Regards Tag: Controls Hide/Show display performance Tag: 111512
  - 12
    - Dynamic Control Example for 2.0? Could someone provide a quick example for .NET 2.0 WinForms of how to dynamically add a control "btnDynamic" to a form when button "btnStandard" is clicked. I don't want to hardcode "btnDynamic" to the form and make it simply visible, I don't want it to exist at runtime until "btnStandard" is clicked, but when "btnDynamic" is created and instantiated, it participates in the form's full event cycle and has its own click event and etc. Thanks. Tag: Controls Hide/Show display performance Tag: 111511
  - 13
    - ListView CheckBoxes hello everybody, I had a problem with a ListView - Object.. I want to list some stuff in a ListView, I created some columns and startet to fill it. In the properties of the ListView I set "VirtualMode" to "true" .. so I could define the values for the columns. I want to select each entry by an checkbox, but the ListView didn't draw the checkbox. If I set the ListViewItem.Checked = true, then I will see the Checkboxes .. but if I don't set it to true, then there will be only the entries without the Checkboxes. I tried the "DrawMode=Own" .. but the result is the same.. could anyone help me? thanks a lot, Ben Tag: Controls Hide/Show display performance Tag: 111510
  - 14
    - ListBox SelectionMode None ?? I have a ListBox only to display list of data and do not want user to select anything. I set the SelectionMode to None. It worked as expected. But, when I close the window. The generated Dispose method raises an ArgumentException: Cannot call this method when SelectionMode is SelectionMode.NONE.\r \nParameter name: SelectedIndex How can I avoid this? Thanks John Tag: Controls Hide/Show display performance Tag: 111501
  - 15
    - cross-thread UI updating? hello, i am a long time asp.net developer, but new to winform programming. in the application ive been assigned, the mainform spawns a new thread to fetch a bunch of data from a method. this takes time, which is why its been placed into its own thread, allowing the rest of the ui to be usable: Private m_getDashboardDataThread As Thread ... 'this is the method that gets the data and *currently* binds it to UI m_getDashboardDataThread = New Thread(AddressOf GetDashboardData) 'not sure if this check is needed If Not m_getDashboardDataThread.ThreadState = Threading.ThreadState.Running Then m_getDashboardDataThread.IsBackground = True m_getDashboardDataThread.Start() End If problem: how & where do i properly bind this data? currently its doing the databind in the thread-method. but thats not going to work when i move the DA method to the real DAL. plus, ive heard allowing a spawned thread access to the main form UI is a Bad Thing (tm). this true, btw? anyway... what is the proper way to do this? the app needs to spawn a thread to get the data, get it back somehow and update the UI. thanks for your help, sm Tag: Controls Hide/Show display performance Tag: 111500
  - 16
    - Drag and drop image? Environment: VS05, C# I'm trying to come up with a good way to create and handle drag and drop images like those that are created by the File Explorer. My first attempt was to use ImageList but this only seems to work within a single control. Drag images are limited to the control in which the drag begins. Would someone be so kind as to suggest a better way to create and show a drag image that will be created by the control in which the drag begins but will still be visible in other controls? Better yet, visible when off the application's client area, too? -- Richard Lewis Haggard www.Haggard-And-Associates.com Tag: Controls Hide/Show display performance Tag: 111498
  - 17
    - Creating Files / PDFs I am not sure where to post this (I think this is appropriate). I have an application that loops through a dataview, and opens a PDF template, and populates the fields of the PDF, and saves the files on a network drive. Ih yeah, the application is a network app. Anyways, when the app runs, it will loop through the dataview (employee records) and create the files. For some users the app will only create 1 employee PDF, however for other users the app will create all 20 employee pdfs. I thought it may be issues with the creation routine, however it works some times, and not others for select users... Any ideas? I am mainly looking for debugging suggestions. I thought it may be the dataset size, however sometimes it works... And it works 100% in our staging environment... Thanks Tag: Controls Hide/Show display performance Tag: 111496
  - 18
    - Confusing Error - Please Help!!! I have a line like resources.ApplyResources(this.label1, "label1"); in Form1.Designer.cs. But because of this line my form load event is not firing. When I comment this line, everything works fine. Any idea why this is happening and what happens if I comment this line? Thanks! Tag: Controls Hide/Show display performance Tag: 111494
  - 19
    - C# / WinForms / CAB architect and developer needed in Houston, TX This is a multi-part message in MIME format. ------=_NextPart_000_004E_01C79D26.05CA4A90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Looking for a C# / WinForms / CAB architect and one developer to help us = develop a GUI framework on top of CAB. Experience in all of the above = is a MUST, knowledge of SOA, Remoting, n-tier architecture, Windows = Communication Framework, ADO, Oracle, DeveloperExpress, Infragistics, = extreme/agile programming would be helpful. =20 One position is for an architect, another for a developer/senior = developer. Contract or Contract to hire. Project start is ASAP, please send questions or resumes to = jeggers[at]tetrix.com Thanks J. Eggers ------=_NextPart_000_004E_01C79D26.05CA4A90 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.6000.16441" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2> <DIV><FONT face=3DArial size=3D2>Looking for a C# / WinForms / CAB = architect and one=20 developer to help us develop a GUI framework on top of CAB.  = Experience in=20 all of the above is a MUST, knowledge of SOA, Remoting, n-tier = architecture,=20 Windows Communication Framework, ADO, Oracle,=20 DeveloperExpress, Infragistics, extreme/agile = programming would=20 be helpful.</FONT></DIV> <DIV><FONT face=3DArial size=3D2>  </FONT></DIV> <DIV><FONT face=3DArial size=3D2>One position is for an architect, = another for a=20 developer/senior developer.  Contract or Contract to = hire.</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Project start is ASAP, please = send questions=20 or resumes to jeggers[at]tetrix.com</FONT></DIV> <DIV> </DIV> <DIV>Thanks</DIV> <DIV> </DIV> <DIV>J. Eggers</DIV> <DIV> </DIV></FONT></DIV></BODY></HTML> ------=_NextPart_000_004E_01C79D26.05CA4A90-- Tag: Controls Hide/Show display performance Tag: 111490
  - 20
    - regarding robohelp Hi all , can any body tell me what is robohelp and how to use it in asp.net for displaying it like some help file. Its very urgent. Regards, kamal. Tag: Controls Hide/Show display performance Tag: 111489
  - 21
    - RadioButton and TabStop Any idea how to prevent selecting a checked RadioButton? TabStop is false, TabStop of the parent is false but when tabbing, the Checked RadioButtn is getting focus. MH Tag: Controls Hide/Show display performance Tag: 111485
  - 22
    - Windows Application Deployment Issues Hi, I want to run a sql script that create a database during the setup process and to include both the .net framework libraries and the crystal reports merge modules as well. I have no idea how to do it. I'm looking for help that provide me with online guiding resources, tips and suitable scenario to do this task. Thank you . Tag: Controls Hide/Show display performance Tag: 111483
  - 23
    - Event Log Sorry if this appears twice ... I sent it two hours ago and nothing appears in the newsgroup ... I'm trying to write to the eventlog but unfortunately I keep getting the error at the bottom of this post. The code snippet is as follows: string source = "My Program"; // Create the source, if it does not already exist. if (!EventLog.SourceExists(source)) { EventLog.CreateEventSource(source, "Application"); } // Create an EventLog instance and assign its source. EventLog myLog = new EventLog(); myLog.Source = source; // Write an informational entry to the event log. myLog.WriteEntry("message"); The error occurs at the second line of code [ if (!EventLog.SourceExists(source))]. This should be simple, shouldn't it? I'm new to .NET 2.0/ VS 2005 and would be grateful for any hep you can provide. Regards Mike System.Security.SecurityException was unhandled Message="The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security." Source="System" StackTrace: at System.Diagnostics.EventLog.FindSourceRegistration(String source, String machineName, Boolean readOnly) at System.Diagnostics.EventLog.SourceExists(String source, String machineName) at System.Diagnostics.EventLog.SourceExists(String source) at EventTest.Form1.button1_Click(Object sender, EventArgs e) in C:\Users\Matthew\Documents\Visual Studio 2005\Projects\EventTest\EventTest\Form1.cs:line 29 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.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.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoopInt32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContextRunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at EventTest.Program.Main() in C:\Users\Matthew\Documents\Visual Studio 2005\Projects\EventTest\EventTest\Program.cs:line 17 at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() Tag: Controls Hide/Show display performance Tag: 111482
  - 24
    - Using EventLog I'm trying to write to the eventlog but unfortunately I keep getting the error at the bottom of this post. The code snippet is as follows: string source = "My Program"; // Create the source, if it does not already exist. if (!EventLog.SourceExists(source)) { EventLog.CreateEventSource(source, "Application"); } // Create an EventLog instance and assign its source. EventLog myLog = new EventLog(); myLog.Source = source; // Write an informational entry to the event log. myLog.WriteEntry("message"); The error occurs at the second line of code [ if (!EventLog.SourceExists(source))]. This should be simple, shouldn't it? I'm new to .NET 2.0/ VS 2005 and would be grateful for any hep you can provide. Regards Mike System.Security.SecurityException was unhandled Message="The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security." Source="System" StackTrace: at System.Diagnostics.EventLog.FindSourceRegistration(String source, String machineName, Boolean readOnly) at System.Diagnostics.EventLog.SourceExists(String source, String machineName) at System.Diagnostics.EventLog.SourceExists(String source) at EventTest.Form1.button1_Click(Object sender, EventArgs e) in C:\Users\Matthew\Documents\Visual Studio 2005\Projects\EventTest\EventTest\Form1.cs:line 29 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.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.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at EventTest.Program.Main() in C:\Users\Matthew\Documents\Visual Studio 2005\Projects\EventTest\EventTest\Program.cs:line 17 at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() Tag: Controls Hide/Show display performance Tag: 111480
  - 25
    - Had a question about the menustrip Alright, here goes...When I put a menu strip on the windows form I can double click the exit button to go to the source page and it takes me to the on click exit blah blah blah and you would put Application.Exit(); Alright well what would I put for the print preview and the print and Save and saveas and open and new? I can't find anything for these. I am new at this and I am sure I am not going in the correct order to learn this stuff but I like jumping around and learning things before I should. Anyways can anybody help me out? I hope everybody could understand that correctly. Tag: Controls Hide/Show display performance Tag: 111478

Hi

I have a quite complex GUI in C#, where i save space by using many
Panels, Pictures which hosts controls.

When the user needs a function, i hide the "olds" panel, pictures..
then show the necessary ones.

All these visible=true/false are killing my app in terms of display
performance and give vey bad impression.

Can someone help me how to improve ?

Thanks
Jonathan

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Re: Controls Hide/Show display performance by Marius

Marius
Wed May 30 07:03:14 CDT 2007

What about

to hide:

myControl.Enabled = false;
myControl.TabStop = false;
myControl.Top = -20000;

and to show do the opposite.

MH

PS. Remember, nothing is free.

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Re: Controls Hide/Show display performance by jweizman

jweizman
Wed May 30 07:32:26 CDT 2007

How TabStop relates to performance ?

Also i was wondering how the Tab Control, was displaying the Tabpages
correctly without redrawing impression .

On 30 mai, 14:03, "Marius Horak" <nob...@eu.con> wrote:
> What about
>
> to hide:
>
> myControl.Enabled = false;
> myControl.TabStop = false;
> myControl.Top = -20000;
>
> and to show do the opposite.
>
> MH
>
> PS. Remember, nothing is free.

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Re: Controls Hide/Show display performance by Marius

Marius
Wed May 30 07:46:54 CDT 2007

jweizman wrote:

>
> How TabStop relates to performance ?

No idea. Maybe TabStop = false is not needed if Enabled = false.

MH

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Re: Controls Hide/Show display performance by Mehdi

Mehdi
Wed May 30 08:00:56 CDT 2007

On Wed, 30 May 2007 05:46:54 -0700, Marius Horak wrote:

> jweizman wrote:
>
>>
>> How TabStop relates to performance ?
>
> No idea. Maybe TabStop = false is not needed if Enabled = false.

I suppose that whoever put this TabStop = false did that to avoid your
hidden control to gain focus when the user uses the Tab key to switch
between controls.

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