Disable Task Manager

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  - 1
    - Detecting idle time from a .Net application I'm having a lot of trouble finding a universal and stable solution to the problem of detecting a session's idle time. I have a .Net application that runs in the system tray, much like many of the messenger services out there. From what I've read in the newsgroups, there are several mechanisms that I can try, but the biggest problem is that I have to get it working on Win98, WinME, Win2K and WinXP. The options I've found are: 1) On a timer, use GetLastInputInfo to check the last input event No good. This requires Win2K and up - I need to run on 98 and ME 2) Add a low-level mouse and keyboard hook in my .Net application using SetWindowsHookEx specifying the hooks WH_MOUSE_LL and WH_KEYBOARD_LL Again, works great in XP, but WH_MOUSE_LL and WH_KEYBOARD_LL are incompatible with 98 andME 3) Add a global mouse and keyboard hook in an external DLL using SetWindowHookEx and WH_MOUSE and WH_KEYBOARD This work fine accross all platforms, but for some reason whenever the screensaver kicks in, my hook stops receiving events. So my question is, is there another solution I should try, or is there something I should be aware of that could get any of the above solutions to work? Tag: Disable Task Manager Tag: 77764
  - 2
    - delete selected rows from a datagrid I have a datagrid whose datasource is a datatable. I want the user to select (multiple) rows in the datagrid, press a button and have the selected rows deleted. Iterating through the rows in the datagrid and testing to see if each is selected and then deleting the associated datarow from the datatable is probably inefficient but nevertheless doesn't work because the selected rows in the datagrid are reset as soon as the first record is deleted from the datatable. Is there an obviously correct method for doing this? Tag: Disable Task Manager Tag: 77763
  - 3
    - Newbie: Dataset - ComboBox synchronization Hello, I have two questions involving Datasets and populating ComboBoxes and other controls with them. 1) Two cmbboxes are populated by two different fields of the same table and, of course, synchronized. However the second field is not required in the DB and missing contents sometimes. Ex: Field1 Field2 john 1990 mary paul anna mario 1967 james .....,etc. So when the user scrols through cmbField1 there is no problem, however if you want to scroll through the year there are big gaps that you go through because there is no contents there. Is there a way to get around that and STILL keep the cmb Boxes synchronized? 2) Now, after having the above from the same table and trying to get *Related* info from another table in my DB (of course still synchronized with the other two controls) I added a second table to the dataset with the INNER JOIN info. I access the new field by : Table1.field3. But field3 belongs to Table2 !!! not Table1! Is this normal? People say it's not a good idea to add more than one table in the same dataset. If this is true how can I get Relational information that is still synchronized? (i.e. fields 1 and 2 from Table1 and field 3 from Table 2) The fact that I get what I want is not enough. I need to know if it's the right way for my case and if there is s better way. Any help/feedback would be Greately appreciated. _steve_ Tag: Disable Task Manager Tag: 77762
  - 4
    - Combo Box Display Member is reset Context: setting a collection of business objects as the DataSourceof a ComboBox. The collection itself extends CollectionBase, and has public properties exposing the desired display and value members. In this particular case, the display and value member is "Value". Prior to setting the combo box datasource, the display member and value member properties are set, then the datasource itself is set. So, before setting the DataSource, the DisplayMember = "Value", but after setting the DataSource, the DisplayMember reverts to "". To put a twist on the issue, the second time that the DataSource is set, everything works as it should... Thanks for any and all input. -- Sancerre Tag: Disable Task Manager Tag: 77758
  - 5
    - User Control Hi All, Can I use user controls at windows forms??? if yes... Where I must search about it??? Tag: Disable Task Manager Tag: 77756
  - 6
    - user control ?!?!!?! basic questions ... Hi All, Can be user controls used in winforms ? if yes... Anibody knows how can I find any article about user controls to winforms... Tag: Disable Task Manager Tag: 77755
  - 7
    - How to: Programactically set the computers clock to the official time? My computer seems to loose seconds from day to day so I would like to have my app download the official time and set my computer's clock. What's the best way to do this? Is there an official time website that offers a library for getting the time? Any thoughts? Steve Tag: Disable Task Manager Tag: 77754
  - 8
    - how to run Excel menu options when shown inside a webBrowser control ????? hi all !!! I have a WinForms app that has a Internet Explorer component where I show information by using the "navigate" method. when I show an XLS file the Excel is embedded and the spreadsheet is correctly shown; the Excel menues are not displayed (that's fine). what I would like to do is to add a button in my WinForms application to pop up Excel's "Save as" dialog. is there any way to do it ? (remember that the XLS file is shown inside the webbrowser component) any hint will be greatly appreciated. thanks in advance, ant Tag: Disable Task Manager Tag: 77752
  - 9
    - MSComm doesn't fire OnComm event in a User Control Iâ??m developing a user control (in C#) that encapsulates the MSComm control. MSComm control is available as a COM component. So, Visual Studio.Net automatically prepares an Interop wrapper for this component. I want to use my user control in a C# windows application. Iâ??m able to send the data through this user control. But the problem is that my user control doesnâ??t catch the OnComm event. Iâ??m sure that there is no problem with the settings of MSComm control. This is because when I put an MSComm control in a separate windows application and then tried to catch the OnComm event, it worked fine and I got all the data from the Input property within the event handler. To Summarize: MSComm control doesnâ??t fire OnComm event in a User Control application. MSComm control does fire OnComm event in a Windows application. Problem: I want to catch OnComm event in my User Control Application. Tag: Disable Task Manager Tag: 77750
  - 10
    - Terminal Service: conocer la IP del cliente remoto? Utilizando .Net, como puedo obtener la dirección ip o el nombre del cliente remoto que está conectado por Terminal Service a un Servidor de Terminal ? En el Terminal Servide Manager me muestra el nombre del cliente remoto, o sea del equipo remoto, pero no se como obtenerlo utilizando C# .Net. gracias. Tag: Disable Task Manager Tag: 77746
  - 11
    - How to add ListBox as Row of DataGrid Hi Guys, How to add ListBox as a row (Sub row) of DataGrid... Please help me Tushar P. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.766 / Virus Database: 513 - Release Date: 17-Sep-04 Tag: Disable Task Manager Tag: 77744
  - 12
    - Problem with Creating User Profiles on Windows XP Hi all, Please ignore the other post.. The cat jumped on the machine and sent it before I could stop it!! Was wondering if anybody has expericence this problem.. I am writting an application in C# using windows forms, to create windows user profiles and then updating the registry information for the new profiles. I have managed to create the user successfully and thought that I was writting the registry information correctly. That was until I checked the 'C:\Documents and Settings' Directory, when I noticed that the new users directories did not reflect their names. But instead comprised of non printable characters!!! Here is the code sample in C# ////////////////////////////////////////// DirectoryEntry NewUser; DirectoryEntry AD = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer"); // delete user when existing try { // this throws when no such user NewUser = AD.Children.Find(strNodeName, "User"); MessageBox.Show("User already exists!!"); return; }// Catch not found exception catch(COMException cex) { Console.WriteLine(cex.Message); } // Add user using the user schema NewUser = AD.Children.Add(strNodeName, "user"); NewUser.Properties["description"].Add(this.txtFirstName.Text + " " + this.txtSurname.Text); // NewUser.Properties["PasswordExpired"].Add(1); // user must change password at next login // Set user flags sample here sets Account disabled, pwd can't change // this flag is different for LDAP accounts NewUser.Properties["userFlags"].Add( UF_NORMAL_ACCOUNT | UF_DONT_EXPIRE_PASSWD ); // invoke native method 'SetPassword' before commiting // for AD domain accounts this must be done after commiting NewUser.Invoke("SetPassword", new Object[] { this.txtPassword.Text }); NewUser.CommitChanges(); // Add user to guests alias DirectoryEntry grp = AD.Children.Find("Guests", "group"); if(grp.Name != null) { grp.Invoke("Add", new Object[] {NewUser.Path.ToString()}); } MessageBox.Show("Account Created Successfully"); AD.Close(); ////////////////////////////////////////// Then I proceed to update the users Registry information!! At this point their is no Directory for the user in "C:\Documents and Settings\" directory ////////////////////////////////////////////////// NativeMethods._PROFILEINFO profile; IntPtr hToken = IntPtr.Zero; hToken = NativeMethods.CreateLogonToken(UserAccount, UserDomain, UserPassword); if(hToken != IntPtr.Zero) { profile = new NativeMethods._PROFILEINFO(); profile.dwSize = Marshal.SizeOf(profile); profile.lpUserName = UserAccount; // Directory Still Not Created at this Point!! int ret = Win32.LoadUserProfile(hToken, ref profile); // This function Invokes if(ret != 0) { // Use WMI to get the SID of the user (this requires W2K3 or XP) using (ManagementObject account = new ManagementObject("Win32_UserAccount.Domain='" + UserDomain +"',Name='" + UserAccount + "'")) { account.Get(); // Get key wich is the root for the users hive loaded in HKU UserSID = account["SID"].ToString(); if(UserSID.Length != 0) { // Now update the registry information for this user!! UpdateRegistryInformation(); } } ret = NativeMethods.UnloadUserProfile(hToken, profile.hProfile); } } [DllImport("advapi32", CharSet=CharSet.Auto, SetLastError=true)] static extern int LogonUser(string lpszUserName, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref HANDLE hToken); [DllImport("userenv", CharSet=CharSet.Auto)] internal static extern int LoadUserProfile(HANDLE hToken,ref _PROFILEINFO lpProfileInfo); public static HANDLE CreateLogonToken(string name, string domain, string passwd) { HANDLE ret = IntPtr.Zero; HANDLE tok = IntPtr.Zero; System.Management.ManagementObject mo = new System.Management.ManagementObject(new ManagementPath()); mo.Scope.Options.EnablePrivileges = true; int result = LogonUser(name, ".", passwd, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref tok); if (result != 0) // If success { ret = tok; } else { string temp = "LogonUser Error: "; temp += Marshal.GetLastWin32Error().ToString(); MessageBox.Show( temp ); } return ret; } /////////////////////////////// So I stopped writting to the registry information and then physically logged in as the user via the windows login screen. This then created the directory correctly!! Any ideas? Thanks Wayne Tag: Disable Task Manager Tag: 77743
  - 13
    - how to prevent duplicated in combobox.... How do i prevent duplicated in combobox ? Private Sub ComboBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ComboBox1.KeyPress If Asc(e.KeyChar) = Keys.Enter Then AxWebBrowser1.Navigate(ComboBox1.Text) Dim bFound As Boolean bFound = False For i As Integer = 0 To ComboBox1.Items.Count - 1 If ComboBox1.SelectedItem = ComboBox1.Text Then bFound = True Exit For End If Next If bFound = False Then ComboBox1.Items.Add(ComboBox1.Text.ToString) End If End If End Sub Tag: Disable Task Manager Tag: 77738
  - 14
    - CollectionEditor Hello everybody. How can I call CollectionEditor from the code, not by click on visual buttons in PropertyGrid? I suppose I have to inherit UITypeEditor, set my custom CollectionEditor as default CollectionEditor for my Collection, override EditValue method and call EditValue? Can anybody send example? Max Tag: Disable Task Manager Tag: 77737
  - 15
    - How to display the Progress (%) in the middle of a Progress Bar... Hi Everyone Can anyone tell me how can I display the progress in percentage in the middle of the progress bar with "invert color" using VB.NET, this is very common and available with most of the applications, like at the begining the text "0%" is shown in black text and the background color of the progress bar is white and at the end, when the progress bar is filled with blue color then the "100%" text is in white color when the progress is in the middle that is "50%" then "5" appears in white color and "0%" appears in black color I want to have this type of effects Thanks Tag: Disable Task Manager Tag: 77734
  - 16
    - Flexible layouts with WinForms I´d like to know if there is something like GridBagPanel under Java in WinForms. I have to organize controls in my dialogs flexible. The Dock/Anchor-Stuff is not enough for me. Can you help me? Thorsten Tag: Disable Task Manager Tag: 77733
  - 17
    - Desktop client and web services - Object reference not set to an instance of an object Hello, I have a desktop client application which calls web services. The application works perfectly. But if I leave application intact about 30 minutes, and after a call a web method an exception is thrown which said: "Object reference not set to an instance of an object". Does anyone get this error? Thanks, Ruslan Tag: Disable Task Manager Tag: 77731
  - 18
    - endcurrentedit / haschanges / always true I have found that the haschanges method always returns true after endcurrentedit, even if the user did not make any changes to any of the controls. //called regardless if a current edit is occuring or not! bindingcontext[dataset,tablename].endcurrentedit if (dataset.haschanges()) dataadapter.update(dataset.getchanges()) I figured one of my controls was changing something, so I compared the original column, to the current column (after the endcurrentedit is called) - and all columns match exactly. Does endcurrentedit always create a changed rowstate, regardless if any of the bound controls were changed or not? Thanks in advance for your time. Richard Tag: Disable Task Manager Tag: 77727
  - 19
    - Looking for FREE components I am looking for free instrumentation type components for C# .NET. gauges, dials, meters, LEDs, etc. Thanks Tag: Disable Task Manager Tag: 77726
  - 20
    - Get current page index in tab control I'm writing a winforms app in vb.net 1.1 and have a tab control on one of the forms. each time a different page is selected in the tab control I need to run code in the form for that particular page. how can I determine which tab or page was selected. I tried using the TabIndexChanged event, but it doesn't fire when I click on a different tab. any ideas? Thanks -- moondaddy@nospam.com Tag: Disable Task Manager Tag: 77725
  - 21
    - unable to obtain SCROLLBARINFO in XP I am trying to get some information regarding a scrollbar on a control...specifically on a system.windows.forms.form control (but ultimately any old control). So I want to use SCROLLBARINFO struct from win32API via GetScrollBarInfo...my definitions are as follows: public struct RECT { public int left, top, right, bottom; } public struct SCROLLBARINFO { public int cbSize; public RECT rcScrollBar; public int dxyLineButton; public int xyThumbTop; public int xyThumbBottom; public int reserved; [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=6)] public int[] rgstate; } [DLLImport("user32.dll", CharSet=CharSetAuto)] static public extern int GetScrollBarInfo(IntPtr hWnd, long idObject, ref SCROLLBARINFO sbi); Now that I have my definitions...I call will the following code in a custom input control: SCROLLBARINFO sbi = new SCROLLBARINFO(); GetScrollBarInfo(hWndRef, 0xFFFFFFFA, ref sbi); this call throws error code 986 out everytime (wether there is a scrollbar present on the ref control or not) and sbi return as an emtpy struct. Any thoughts? thanks in advance, dec. Tag: Disable Task Manager Tag: 77720
  - 22
    - Implenting Keyboard support in windows forms (Type your message here) I need to implement functionality to support function= keys(F1=2E=2EF12) and shortcut keys(example Ctrl R) in windows= forms=2EUser will use just the key board to access and navigate= the forms, User will not use mouse=2EIf any one has any= suggestions can you please let me know=2E Note:I tried KeyPressed events=2E it seems i can't capture the= function keys or the modifier keys with this event=2E Note: i tried to use ProcessCmdKey=2E I am not able to capture the= combination key strokes like "Ctrl F") Thanks -------------------------------- From: Tech Student ----------------------- Posted by a user from =2ENET 247 (http://www=2Edotnet247=2Ecom/) <Id>6xNnxnozP0usVg/wS3rmRQ=3D=3D</Id> Tag: Disable Task Manager Tag: 77717
  - 23
    - Stack Trace Fails To Report Line Of Exception? Greetings, I have been capturing and logging exceptions in an application I developed. I've noticed for some time now that certain exceptions track back to the Application.Run method and provide no other line number useful for identifying the actual line throwing the exception. For example: at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow) at System.Windows.Forms.Control.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.ShowDialog(IWin32Window owner) at System.Windows.Forms.Form.ShowDialog() at System.Windows.Forms.ThreadContext.OnThreadException(Exception t) at System.Windows.Forms.Control.WndProcException(Exception e) at System.Windows.Forms.ControlNativeWindow.OnThreadException(Exception e) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageA(MSG& msg) at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at Clarity.Cashflow.Interface.TransactionForm.Main(String[] args) in c:\documents and settings\mlanza\my documents\visual studio projects\clarity.cashflow.satellite\interface\transactionform.cs:line 369 Line 369 appears below: TransactionForm frm; try { frm = new TransactionForm(); Application.Run(frm); //line 369 } catch(System.Exception ex) { Core.ErrorLog.AddEntry(ex); } As you might guess, this is not very useful. Of course, I know the exception was thrown somewhere within the context of my whole application, just not the actual line number. Yes, there are a number of clues provided in the stack trace, but nothing half as useful as an actual line number. My guess is that for this to happen, the actual line number must not be wrapped in a try-catch block. Now, for the most part, I have try-catch blocks everywhere throughout my application. Upon recent review I discovered I was doing something unusual -- I have try-catch blocks wrapping calls to events that are handled in turn by the even subscriber. When I wrote this logic it was my understanding that such a try-catch block would still do the trick. For example: try { RequestInputEventArgs ri = this.OnRequestInput("Enter Transaction Remarks", prompt, cdt, false, String.Empty); } catch(System.Exception ex) { Core.ErrorLog.AddEntry(ex); } The subscriber method: private void TransactionManager_RequestInput(object sender, RequestInputEventArgs e) { InputBox input = new InputBox(e.Caption, e.Prompt, e.DefaultText, e.ValidDataType, e.AllowEmptyString); input.ShowDialog(this); e.Cancel = input.Cancel; if (!e.Cancel) e.InputText = input.InputText; } As you can see, there in no error handler in the subscriber. I am assuming the error handler in the class raising the event is still in effect for catching errors, even those thrown in the subscriber. Is this true? If so, does anyone have an other ideas why my stack traces aren't pinpointing the actual line numbers? Mario T. Lanza Clarity Information Architecture, Inc. 2004.09 Tag: Disable Task Manager Tag: 77715
  - 24
    - Newbie: Aligning Labels and TextBoxes on form Hi, When I design forms, I frequently have a lower-right aligned Label to the left of a TextBox. For example, I might have a Label with the Text property set to "Name:" and a TextBox to the immediate right where the user types his name. It's very hard to get the bottom of the label to align with the bottom of the text box. I discovered that VS.NET will perform the alignment for me if I select both items and use Format | Align | Bottoms. When dealing with long forms containing dozens of Label-TextBox pairs, I run into problems when I try to select ALL of the controls and, for example, move them all down an inch or two. I might do this if I realize that I forgot to include a particular label-textBox pair at the top of the form. When I move everything down (or up), I lose my alignment. The Labels and TextBoxes no longer have aligned bottoms. They are close, but not a match. This means I have to re-select each of the pairs and align them one by one EACH and every time I decide to change the form in a way that moves these pairs around. This is getting frustration for me. Is this a bug? Is there a workaround? Thanks. Sal B. Witness Protection Program ID#19730127 Tag: Disable Task Manager Tag: 77714
  - 25
    - newbie question: how to set a launched process (by Process.Start methods) as Modal I am using C#.NET WinForm. The scenario I have is: a WinForm child form launches a process using Process.Start(app_name). Other than checking the HasExited property and waiting, is there a way to forced a launched process (a third party application) as Modal (i.e. user has to respond to that process before get back to the WinForm application)? Thanks in advance for the help. MichaelJ Tag: Disable Task Manager Tag: 77711
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  - 1
    - Object's Form Text or Name? Hi All, I am trying to figure out how to get an object's Form Name or Text value. If I have a ListView object called LV1, I want it's Parent Name/Text. Using the Parent Object will not do because the ListView may be contained within other objects such as Panels, Groups, or Tab Objects. Any ideas would be appreciated, John. Tag: Disable Task Manager Tag: 77705
  - 2
    - cancelling an asynchronous web method call This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C4A18E.941DB7A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi,=20 I have a windows forms app, and a web service that can take a long time = to complete, so i use it asynchronously with the proxy generated = Begin/End methods. =20 However, i want the user to be able to cancel the operation. i = understand that the request has already been sent off, and the next = thing we'll hear back is when the result is received, so an actualy = cancel will be difficult to achieve. I have tried calling = webService.Abort() but this throws a ThreadException. I have worked out = the following crude work-around, which is simply to ignore the result = when it comes in, by means of a simple bool variable which gets set to = 'true' (meaning ignore) when btnCancel is clicked. =20 I would be interested to hear if anyone else has a better solution. my = code fragment is below.=20 many thanks tim mackey.=20 private bool ignoreResult =3D false; private ws.Service1 webService; ... private void btnStart_Click(object sender, System.EventArgs e) { AsyncCallback callBack =3D new AsyncCallback(Callback); IAsyncResult result =3D webService.BeginHelloWorld(5, callBack, null); }=20 public void Callback(IAsyncResult asyncResult) { if(ignoreResult)=20 return;=20 this.label1.Text =3D webService.EndHelloWorld(asyncResult); } private void btnCancel_Click(object sender, System.EventArgs e) { ignoreResult =3D true; this.label1.Text =3D "Cancelled } \\ email: tim at mackey dot ie // \\ blog: http://tim.mackey.ie // 67d0ebfec70e8db3 ------=_NextPart_000_0008_01C4A18E.941DB7A0 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 6.00.2900.2180" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2><FONT color=3D#000000>Hi, </FONT> <DIV><FONT color=3D#000000>I have a windows forms app, and a web service = that can=20 take a long time to complete, so i use it asynchronously with the proxy=20 generated Begin/End methods.  </FONT></DIV> <DIV><FONT color=3D#000000>However, i want the user to be able to cancel = the=20 operation.  i understand that the request has already been = sent off,=20 and the next thing we'll hear back is when the result is received, so an = actualy=20 cancel will be difficult to achieve.   I have tried calling=20 webService.Abort() but this throws a ThreadException.  I have = worked out=20 the following crude work-around, which is simply to ignore the result = when it=20 comes in, by means of a simple bool variable which gets set to 'true' = (meaning=20 ignore) when btnCancel is clicked.  </FONT></DIV> <DIV><FONT color=3D#000000>I would be interested to hear if anyone else = has a=20 better solution.  my code fragment is </FONT><FONT = color=3D#000000>below.=20 </FONT></DIV> <DIV><FONT color=3D#000000>many thanks</FONT></DIV> <DIV><FONT color=3D#000000>tim mackey. </FONT></DIV> <DIV><FONT color=3D#000000></FONT> </DIV> <DIV><FONT color=3D#000000>private bool ignoreResult =3D = false;</FONT></DIV> <DIV><FONT color=3D#000000>private ws.Service1 webService;</FONT></DIV> <DIV><FONT color=3D#000000>...</FONT></DIV> <DIV><FONT color=3D#000000>private</FONT><FONT size=3D2> </FONT><FONT=20 size=3D2>void</FONT><FONT size=3D2> btnStart_Click(</FONT><FONT=20 size=3D2>object</FONT><FONT size=3D2> sender, System.EventArgs e)</DIV> <DIV>{</DIV> <DIV>  AsyncCallback callBack =3D </FONT><FONT color=3D#0000ff=20 size=3D2>new</FONT><FONT size=3D2> AsyncCallback(Callback);</DIV> <DIV>  IAsyncResult result =3D webService.BeginHelloWorld(5, = callBack,=20 </FONT><FONT color=3D#0000ff size=3D2>null</FONT><FONT size=3D2>);</DIV> <DIV>} </DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>public</FONT><FONT size=3D2> = </FONT><FONT=20 color=3D#0000ff size=3D2>void</FONT><FONT size=3D2> = Callback(IAsyncResult=20 asyncResult)</DIV> <DIV>{</DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>  if</FONT><FONT=20 size=3D2>(ignoreResult) </DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>    = return</FONT><FONT=20 size=3D2>; </DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>  this</FONT><FONT=20 size=3D2>.label1.Text =3D webService.EndHelloWorld(asyncResult);</DIV> <DIV>}</DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>private</FONT><FONT size=3D2> = </FONT><FONT=20 color=3D#0000ff size=3D2>void</FONT><FONT size=3D2> = btnCancel_Click(</FONT><FONT=20 color=3D#0000ff size=3D2>object</FONT><FONT size=3D2> sender, = System.EventArgs=20 e)</DIV> <DIV>{</DIV> <DIV>  ignoreResult =3D </FONT><FONT color=3D#0000ff = size=3D2>true</FONT><FONT=20 size=3D2>;</DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>  this</FONT><FONT=20 size=3D2>.label1.Text =3D "Cancelled</DIV> <DIV>}</DIV> <DIV> </DIV> <DIV> </DIV> <DIV> </DIV></FONT> <DIV><FONT style=3D"FONT-SIZE: 10pt; FONT-FAMILY: verdana">\\ email: tim = at mackey=20 dot ie //<BR>\\ blog: <A = href=3D"http://tim.mackey.ie">http://tim.mackey.ie</A>=20 //<BR></FONT><FONT style=3D"PADDING-LEFT: 100px; FONT-SIZE: = 5px">67d0ebfec70e8db3=20 </FONT></DIV></FONT></DIV></BODY></HTML> ------=_NextPart_000_0008_01C4A18E.941DB7A0-- Tag: Disable Task Manager Tag: 77701
  - 3
    - Opening new WebForm Hello, I have a web-application. After pressing the button special form should be opened in a new browser window. How can I achieve that? Please, give a simple example. Thank you VS.NET C# Tag: Disable Task Manager Tag: 77697
  - 4
    - How to Filer DataSet on DateTime type. Hi Friends, I want to filter dataset on DateTime column... I am getting filetred output.... Please give me the way to give fillter qry for dateTime type column... Thanking You Tushar P. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.766 / Virus Database: 513 - Release Date: 17-Sep-04 Tag: Disable Task Manager Tag: 77696
  - 5
    - Can I create a PDF using VB code? I want to create a VB.NET program to create a PDF. Is it possible? I have Acrobat 6 Pro and think I need to use it somehow. Does anyone know a starting place for me to look into how to do this? Any help is appreciated. Tag: Disable Task Manager Tag: 77695
  - 6
    - MouseEnter MouseLeave BUG - form caching? Hi all, I have been told of a mouseEnter mouseLeave BUG, that I have experienced (wich I can't find in the KB). For a brief introduction I'll explain it: The first time you show a form, mouseEnter/mouseLeave events of child controls fire correctly. When you close the form and show it the next time, only the first mouseEnter event (for the controls that had previously fired it) works, then no more mouseEnter/mouseLeave events are fired, no matter if you close the form and show it again. I have experienced this the first time with a picturebox, but lookig for other ways to do what I wanted to, I notice that the problem is at least with labels, buttons and pictureboxes. So I guess it is a bug of the framework for windows forms. My question is... I want to cache objects that include forms. I don't want to instantiate them all the time... is there a way to "clear" event wiring/messages of the form (remember that the first time the form is showed everything works fine)? Also, will that be the same overhead of destroying/recreating the object? Any other ideas for form caching are welcome... TIA, Pucara. Tag: Disable Task Manager Tag: 77693
  - 7
    - theme and scheme My XP desktop theme is set to "Windows XP (Modified)" and the "Appearance" is set as: Windows and buttons: Windows XP style Color scheme: Silver This shows correctly in my .Net 2005 Beta 1 IDE but when I run the application it seems to revert back to a 'classic' style. Any ideas how to set the running app to display as it does in the IDE? Paul Tag: Disable Task Manager Tag: 77692
  - 8
    - Sorry if this is oin the wrong place I am not getting any feed back at all. Is this a really stupid question or is it just that knowone has an answer? Hi All, I not sure where to ask this question so I will start here. I have a piece of wireless hardware that streams music from my PC to my HiFi. Running on the PC is a windows service that the wirelss device talks to. I would like to find out how they communicate with one an other. When I select an album on the wireless device and press play it must send a message or raise an event which the aforementioned service traps or responds to by looking in its database and streaming my selection. I would like to knock up a little catch all app which I could use to try and track what was going on and any pointers would be much appreciated (VB6 or VB.NET). Sorry if this is vague but its way of my normal path. Thanks for any help. Geoff. Tag: Disable Task Manager Tag: 77689
  - 9
    - Flat progressbar? Help needed to create a flat progressbar! // Mats Tag: Disable Task Manager Tag: 77687
  - 10
    - How can I suppress ScrollActiveControlIntoView? I have developed a control which contains two other controls (much larger than itself) and scrolls over them. When one of the child controls has focus, and I resize the window, the scroll bar in the containing window jumps to the top. This is unacceptable...I want to keep a particular part of my control (where the selection is) visible. By intercepting WM_MOVE in my WndProc, I have been able to determine that this is happening in an undocumented Framework method called ScrollActiveControlIntoView. Apparently when you resize a ContainerControl, it thinks the active control should be visible, and it also appears that it thinks 'making it visible' means making the TOP of it visible. I tried changing the base class of the container from UserControl to Panel, so that it wouldn't inherit from ContainerControl, and doing my own focus management. It didn't help. There is another window (further out) that is a container control, and it apparently digs down through the hierarchy, finds the active control, and forces it to be visible (i.e., changes the scroll position of its container to show its top). By default this also happens when my control gets focus. I was able to defeat this by overriding WndProc and not calling the base method for WM_SETFOCUS. (Is this dangerous?) However, a similar override for WM_SIZE does not prevent the unwanted scroll when the window is resized. Can anyone tell me how to fix this? Tag: Disable Task Manager Tag: 77685
  - 11
    - Crystal Reports for .NET is crashing, can you help me out? I have a multi-threaded C# desktop application that is run 8 hours a day under fairly heavy load. It prints hundreds of reports to a printer and to pdf files. The application is CTDing several times a day with no error message. The crashes appear consistently during the generation of reports to either the printer or a PDF file. Because the reports can be quite extensive and time consuming I run the reports in a background thread. I use invoke to signal the main thread on progress. I have monitored the memory and CPU on the machines and have not noticed any problem there. Environment: Windows XP SP 1, .NET Framework 1.1 SP 1, most recent Crystal .NET patch, SQL Server 2000 My questions are as follows: 1. Has anyone seen this problem and do you have any suggestions? 2. Is there a way to generate a log within the managed crystal reports object so I can see internal errors? 3. Is there a more stable option for reporting than Crystal reports? Tag: Disable Task Manager Tag: 77684
  - 12
    - System Beep on Return, Escape, etc. in TextBox If I have a TextBox where MultiLine=false, an Escape key-press or a Return key-press causes a system beep. I'm handling those keys manually fron the KeyUp handler of the TextBox. How can I keep this beeping from happening? Tag: Disable Task Manager Tag: 77683
  - 13
    - Insert unbound item in bound listbox I have a form with several listboxes that I want to use as a query. The listboxes are bound to DataTables in my DataSet. I want to add an item called 'All' to each listbox and make it the first item in each list. This item would represent the selection of all criteria in the box, and it would be selected by default. Is it possible to add an unbound item to a bound control? Tag: Disable Task Manager Tag: 77682
  - 14
    - focus event sequence In my app I have an MdiForm which displays various child forms. each of the child forms has event handlers for Activate, Deactivate, GotFocus and LostFocus. When the MdiForm creates the child and displays it eg: Public Sub cmdShow(...) handles cmdShow.Click Dim frm as New frmChild frm.Show End Sub the child form processes the Activate event shortly followed by the LostFocus event. It never seems to process GotFocus Even if I create a second child form and then switch between the two using the mouse it is still not triggered. Any Ideas please. Tag: Disable Task Manager Tag: 77681
  - 15
    - Fixed width in Listview ColumnHeader In my application I want to fix the size of all columns in a listview. The user is not allowed to change the size, but the column header is visible (HeaderStyle = clickable). There are 2 ways to get the coorect result: 1. (preferable) the user is not allowed to resize the column 2. if I can't lock the resize of the column, I want to reset the width. How can I either lock the resize or in the second case, which event can I use to listen to the resize of the column width? I use C# in .NET 1.1 framework Tag: Disable Task Manager Tag: 77680
  - 16
    - How to ignore appearance change for windows control? A windows user control is attached on a web page, when user changes his client side PC's System Display Properties - Appearance Setting, the windows control appearance also is changed. It looks like a windows application, but not a web application. Is there a simple way to ignore the client side system appearance change, or to set the windows control appearance as "Windows Standard Scheme", instead of setting the control's all appearance properties? Thanks, FD Tag: Disable Task Manager Tag: 77678
  - 17
    - Ineritance form but no content in .resx file Hi all, I got some preoblem when inherit form in the same project and I use VB .net to develop my application. The problem occured when I try to add a new Form class and I insert code like this: ' assume my ParentForm class is work well Public Class ParentForm Inherits System.Windows.Forms.Form ' ' ther are lots of code here ' End Class Public Class MyForm Inherit ParentForm ' somthing like this #Region "..." #End Region End Class After that I try to open MyForm form design but it appear white color and error message "blah blah blah ...", but it is no problem with ParentForm form design. There is something go wrong with .resx file of MyForm class, it dose not have content inside this file (see with .NET IDE). Is there anyone know what's happen with my form and how can I solve this problem because I need to add some control to MyForm class. Thanks, KPH Tag: Disable Task Manager Tag: 77676
  - 18
    - Keyboard Remap I want to remap the ENTER key on the numeric keypad to the TAB key for the duration of my application. I realise I can do this globally using Scancode Map in the registry but can it be done within an application? I have also tried using SendKeys within the KeyDown event but this has the folloiwng problems... 1. Cannot diffrentiate between the QWERTY ENTER key and the numeric keypad key. 2. If a textbox has focus, it will beep before moving to the next field. ie. Textbox validation occurs prior to the KeyDown event. 3. If a form has an AcceptButton defined and is displayed as a dialog, the event is not fired. Tag: Disable Task Manager Tag: 77675
  - 19
    - Showdialog hangs My application has 3 forms - form1 invokes form2 via showdialog - form2 then invokes form3 via showdialog. Form3 hangs, however if I place a timer in Form3 to delay its execution slightly, Form3 runs as expected. Does anyone have any ideas why or how to fix the problem? Public module data is referenced by all 3 forms. -- KenC Tag: Disable Task Manager Tag: 77674
  - 20
    - Screen Keyboard Hi I have a question thatÂ´s make me donÂ´t sleep. In my company we're development a .net application that emulate a keyboard. The aplication is a System.Windows.Forms.Form with some System.Windows.Forms.Button inside. When click the button we use a function api to send the focus to the previus windows and put the key on the system. If we do this we have a inconvenience, some textboxes like IE URL when it lost the focus and return to it, the text is automatically selected. We need to make that our application work like the windows XP keyboard on screen. This app don't capture the focus when do click on his keys and we need do the same. Â¿Can we do this on .Net? or Â¿We need some different like C or C++ with no managed code?. Thanks in advance. -- David Romero Hernandez _________________________ david@compucaja.com.mx ComputaciÃ³n XXI S.A. de C.V. Tag: Disable Task Manager Tag: 77673
  - 21
    - set scrollbar middle slider This must be a really obvious question but I cant find the answer. How do you control the height of the middle bit of a (vertical) scrollbar, ie the bit that you slide up and down? Adam Tag: Disable Task Manager Tag: 77672
  - 22
    - Sharing a DataSet between two forms I've made a form to display the contents of a rather large database. A friend of mine has made a form that will act as a query. It consists of several listboxes from which you can choose criteria for the query. But the dataset, the connection, and all the data adapters are declared in my form and I can't use them in his form to bind the list boxes to my dataset. If I change the type of DataSet11 (which is declared in my form) from Friend WithEvents to Public Shared WithEvents, the compiler says DataSet11 is either not declared or never assigned, and it disappears from the Form Designer. I don't want to have to create the dataset, the data adapters, etc. in the other form because that seems redundant. I can declare a DataSet12 in the second form and it looks like it inherits all of DataSet1's tables and relationships, but the tables are empty, of course, because that form has no data adapters. It seems that what I need to do is fill the DataSet in my form (Form1) upon loading Form2 (which obviously needs to load first), and let Form2 access the DataSet to fill its listboxes. Is this logic correct, and how do I do this? Tag: Disable Task Manager Tag: 77671
  - 23
    - binding combobox Hello, I'm sure a lot of you can help... I have the following function: **************** string sSQL = "SELECT CountryId, Country FROM Countries ORDER BY Country"; string sConnectionString = "SERVER=FGMCSQL;DATABASE=Web;USER ID=sql123;PASSWORD=qwerty;"; SqlConnection sqlCon = new SqlConnection(sConnectionString); sqlCon.Open(); SqlCommand sqlCom = new SqlCommand(); sqlCom.CommandType = CommandType.Text; sqlCom.CommandText = sSQL; sqlCom.Connection = sqlCon; SqlDataAdapter da = new SqlDataAdapter(sqlCom); DataTable dt = new DataTable(); da.Fill(dt); cboDTCountry.DataSource = dt.DefaultView; cboDTCountry.ValueMember = "CountryId"; cboDTCountry.DisplayMember = "Country"; sqlCon.Close(); *********** Can anyone tell me why I'm getting an error when my sql string is changed to: string sSQL = "SELECT * FROM Countries ORDER BY Country"; The error happens in this line: cboDTCountry.ValueMember = "CountryId"; It says it cannot bind to it. I know asp.net doesn't generate this error when this same concept is applied. Can anyone explain why using an asterisk (*) generates this error? Must I instead select individual fields from the database? While your reading this, I'm very open to any suggestions on improving this simple function. Please have a shot at it! Thanks, Edward Tag: Disable Task Manager Tag: 77669
  - 24
    - problem with datagrid bound to arraylist I have and arraylist bound to a datagrid which on the whole works fine, however if i select a row then as soon as I leave the grid i get "Error when commiting row to backing datastore" I cant seem to trap this, The data in the grid matches that in the arralist I then get "Index was out of range Must be non-negative and less than the size of the collection" stack trace reveals the problem is at System.Collections.Arraylist.get_Item(int32 index) any ideas? guy Tag: Disable Task Manager Tag: 77668
  - 25
    - Suppress serialization for Controls property of UserControl I have this UserControl which is just like the TabControl with two private (to the usercontrol) panels, the header and the detail. I have the appropriate designer classes for my control. (I needed the two panels for docking purposes inside the usercontrol) Custom buttons are added into the Header panel and custom tabpages are added to the Detail panel. I have an eventhandler on my usercontrol which handles the adding, removing of the buttons and tabpages from the header and detail panels whenever there is a change in the collection property of the two (buttons and tabpages). My question is, when the control is used in a form, there is a problem with serialization. I believe this is so since the designer tries to serialize the objects in the Controls collection of the two private panels (Header and Detail) because controls were added to them. How will I suppress my designer to prevent the said serialization since I do not need the such lines because the controls are already added to the two panel's control collection by my usercontrol's eventhandler. If I ever have to design a custom designerserializer for my control, how should I code it? I've seen Shawn Burke's ButtonArray example but his custom serializer just appends additional lines after the base class' serializer. Please help, thanks a lot! Tag: Disable Task Manager Tag: 77667

I'm trying to figure out how to PROGRAMMATICALLY disable the Task Manager
while logged in as a "non-administrator" user (only belongs to the "Users"
group).

I know I can programmatically disable the Task Manager by having my app
write a 1 to the registry key
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System.
Unfortunatley this only works, though, if the user who is running the app is
logged in as an Administrator. When I try to run the app as a just a regular
"non-administrator" User I am not able to write to the registry!

So... Is it possible to do this? If so how?

Top

Re: Disable Task Manager by Sijin

Sijin
Sun Sep 26 10:14:07 CDT 2004

I sure hope not, and if it is possible i hope MS releases a hotfix
immediately :)

Sijin Joseph
http://www.indiangeek.net
http://weblogs.asp.net/sjoseph

Jeff Bell wrote:
> I'm trying to figure out how to PROGRAMMATICALLY disable the Task Manager
> while logged in as a "non-administrator" user (only belongs to the "Users"
> group).
>
> I know I can programmatically disable the Task Manager by having my app
> write a 1 to the registry key
> HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System.
> Unfortunatley this only works, though, if the user who is running the app is
> logged in as an Administrator. When I try to run the app as a just a regular
> "non-administrator" User I am not able to write to the registry!
>
> So... Is it possible to do this? If so how?
>

Top