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- Previous
  - 1
    - DataGridView custom column for- password add and edit Hi All, Please let me know how to impliment a custom datagridview column for a password add and edit functionality. TIA Nikila Tag: Domain Name Tag: 99791
  - 2
    - Win application freezes on datagrid scroll event Hallo, I'm experiencing an eerie trouble using datagrids on Windows application with .NET framework 2.0 Being concise, I say that my applications polls the serial port by means of a separate thread. When some information is found on the tool connected to the port (a GSM phone), such an information (SMS) is put in the db and then an event is raised. When such an event is raised, the delegate invokes an appropriate method that refreshes the datagrid: every row in the grid is one received SMS. The refreshing is made by the separate thread, so it is called the appropriate method that enables separate threads to interact with the objects and controls of the UserInterface belonging to the main thread, as it is meant to be. Ok, everything works fine but, say that the datagrid control can show 16 items before the vertical scrollbar appears, when the 17th item has to be shown, instead to visualize the vertical scrollbar, the whole application freezes. No errors are thrown: just freezes - not responding application. Need to kill and restart, and so it's ok: vertical scrollbar appear. I've to say that this behaviour doesn't happen always. Almost always. I mean, sometimes 20 or more SMS are found in the GSM and correctly shown in the datagrid with scrollbar, but the most of times when the 17th is shown, application freezes. I'd be glad if someone could shed some light upon this strange, and unpredictable, event. Many thanks, Paolo P Tag: Domain Name Tag: 99788
  - 3
    - Use MeasureString to determine required height I'm trying to create a label control in VB.NET2005 that will automatically change it's height to fit the content. To do that i'm using MeasureString to determine required height for a set width. What i found is that MeasureString sometimes returns the height which is smaller then it should be and it seems to depended on the width. So the question is am i doing something wrong or it's a bug. If it is a bug, can someone recomend a reliable workaround. Here is a code that used to test this. When width is set to 570, the last line is not visible. When it's set to 590 all is OK. Sub TestMeasureString(ByVal g As Graphics) Dim s As Size Dim f As Font = New Font("Arial", 11.25, FontStyle.Regular, GraphicsUnit.Point) Dim str As String = New String("W"c, 1000) & " END" s = g.MeasureString(str, f, 570).ToSize 's = g.MeasureString(str, f, 590).ToSize g.DrawRectangle(Pens.Black, New Rectangle(New Point(0, 0), s)) g.DrawString(str, f, Brushes.Black, New Rectangle(New Point(0, 0), s)) End Sub Tag: Domain Name Tag: 99783
  - 4
    - read guid I have a vb.net 2.0 project where I need to read a files guid. Is this even possible? I need to do this via CODE, no 3rd party app please. Can I generate guids all day long but I want to read what a dll file has already been assigned. I know I can painfully search the registry. But there must be a better way. They are vb6 dll's, so they have a type library file. Can that be used? i.e. file "testds.dll" = {000-....} Thanx. Tag: Domain Name Tag: 99779
  - 5
    - DataGrid View How do you set the width of row(-1) where the Row[x].HeaderCell are? Also how can you write something in the topleft most cell [-1,-1]? Tag: Domain Name Tag: 99777
  - 6
    - Question on Inheriting Controls I have a project which is a Windows Form "Wizard". Each "page" displayed in the main Wizard form will be a user control. Each of these user controls will share many similar attributes. So it seems natural for me to create a base user control class and have all my "pages" inherit from it. But it seems that VS2005 really isn't happy doing this unless the base class is compiled and put into an assembly other than the one containing my project. The visual designer get al hosed up and complains. I can force it all to work by hand-coding some changes but this seems way harder than it should be. Is there something I am missing here? Thanks. Tag: Domain Name Tag: 99776
  - 7
    - DataSet and Usercontrol TestContainer has a Problem I have a WebService that has a method that returns a Typed DataSet. I create a UserControl that calls this method. When the UserControl runs by "UserControl TestContainer" and calls the WebService's method which returns a Typed DataSet the error "There is an error in XML document (1, 220)." is thrown. I don't know what's is wrong. This problem only occurs when Typed DataSet is returned and running by "UserControl TestContainer". I'm using .Net Framework 2.0 and VS 2005. Could someone help me? Tag: Domain Name Tag: 99775
  - 8
    - MonthCalendar - Hot to retrieve the Month(s) displayed? How would I determine the first and last day, month and year of the currently displayed month(s)? Withoutout clicking on the day 1 box? Tag: Domain Name Tag: 99774
  - 9
    - RichEditBox speed Is there anyway to speed up the selecting and coloring of text in a richedit. The parsing of the text is nothing in comparison with how long it takes these two calls to take place (over many lines): rtb.Select(currentPos, myLine.Length); rtb.SelectionColor = myColor; From my research, there are a few ways to speed up the richedit but none of them help speed up the coloring process: 1) Inherit from the RichEdit and in an overloaded WndProc, ignore WM_PAINTs while updating 2) Use SendMessage to pause redraws/events (EM_SETEVENTMASK, SETREDRAW)while updating 3) Hide the RichTextBox while updating (seems to work the best...but it is still slow) Does anyone else out there have any better suggestions? I want to color the entire richeditbox in one sweep...so I don't have flickering or other noticeable side-effects caused by scrolling. I'm not looking to use a 3rd party control either for a number of reasons. TIA! sb Tag: Domain Name Tag: 99769
  - 10
    - State of MdiClient Hi, I'm developing an MDI application and i am having a problem: how do i know the state of MdiClient; what i mean is: when i maximize a MDI child, then close it and then open a new MDI child, it will open maximized, then if i change it's state to Normal and close, then next opened MDI child screen will have state Normal. So i assume that MdiClient keeps state of MDI child windows even if none of child forms exists at the moment. How do i find that? Thank you, MuZZy Tag: Domain Name Tag: 99764
  - 11
    - Adding 'object' to Treeview? I have a bunch of related classes that I want to add into a Treeview with a hierarchy. However, Treeview doesn't support the insertion of the root 'object' type into the nodes, which surprises me. I just wanted to add them in and have the mouse events fire back with the reference to the object clicked on. I figured I'd have to override ToString in my classes to have them show up in the treeview in the right way and that would be that. But to my surprise it doesn't seem to work like that and it seems like I have to start messing with data binding... which just seems so overkill for the task that it must be the wrong thing to do. Can't I just add 'object' types like I can to the collection classes? What should I be doing instead? Thanks for any help! Tag: Domain Name Tag: 99761
  - 12
    - Is the computer locked? Is there a way using the .NET framework to find out if the machine a service is running on is locked by the user? Tag: Domain Name Tag: 99760
  - 13
    - How to Package and Deploy Windows Installer 3.0 I have made setup project (VS 2005) that includes setup of my app and Framework 2.0 How can I check if there is installed Windows Installer 3.1 and if not to install it? I know that I have to add launch condition, but don't know what to type in properties. Thanks Tag: Domain Name Tag: 99756
  - 14
    - ReportViewer - Multiple forms or Single form I have finally got the hang of this ReportViewer control. The one question that I have is dealing with multiple reports. If I have, lets say, 10 rdlc reports should I have 10 WinForms to put them on, or put them on one form and programmatically choose which rdlc to use. I have been doing the second option but have been running into some weird data binding sharing issues. Any thoughts/suggestions? Tag: Domain Name Tag: 99754
  - 15
    - Notification Icon Hi group, is there a way to make a Notification Icon object available for the entire application?? because, for example, if i have a MDI form (i'm using VS 2005) with a Notification Icon object, and display a modal dialog, the click event on the notification object will not fire while the modal is active. Any suggestions? Thanks in advance Tag: Domain Name Tag: 99752
  - 16
    - Serialization hello, i want to do the following: I have an extender provider which is serialized correctly. the vs designer generates the following code for a button for example: myButton.SetMyProvider(this, new MyItem()); Now what I want to do is that he creates a new class first. this class called MyItem has a collection. so i want that the code is generated like the following MyItem Item1 = new MyItem(); Item1.MyCollection.Add(new MyChildItem()); Item1.MyCollection.Add(new MyChildItem()); myButton.SetMyProvider(this, Item1); Is it possible to get the objects serialized a way like that? Tag: Domain Name Tag: 99750
  - 17
    - Using System.Web.Mail.MailMessage in Windows Forms Hi, I've written a small proof of concept application to show we can send emails in VB.NET and it works a treat using this piece of code: Dim myEmail As System.Web.Mail.MailMessage = New System.Web.Mail.MailMessage() myEmail.From = txtFrom.Text myEmail.To = txtTo.Text myEmail.Body = txtBody.Text SmtpMail.SmtpServer = "" SmtpMail.Send(myEmail) But if I specify a mailserver in SmtpMail.SmtpServer I get this error: Could not access 'CDO.Message' object. Why does setting SmtpMail.SmtpServer = "" send the email? Does this mean that using System.Web.Mail.MailMessage is reliant on having Outlook or Outlook Express installed (Currently I have Outlook 2003 installed)? Thanks Darren Tag: Domain Name Tag: 99748
  - 18
    - Slow Rendering on Windows Forms when I am using graphics as backgr Hello, I am trying to build a KIOSK application, where all windows forms are filled with graphics images and a lot of buttons. The major bproblem is that when the application is running and the forms are ready to display on the screen I see a lot of cuts... for example when I show a form that has a background image (800x600) and about 20 buttons on it, which each of the button has a background image, the render on the screen is not the recomended....! Is there any technique that I could do the rendering smoother and faster??? Many thanks George Barbagiannis P.S. Computer 2.4G 1GB 128MB VGA Tag: Domain Name Tag: 99741
  - 19
    - Windows forms Datagrid cell text Hi, I am trying to write some code that will return the text from a datagrid cell when you click on it. So far I have the following code (which maybe completely the wrong way to go about this), which returns the row number, and the column number, but I am not sure how to get the contents of the cell from this. /// Private Sub dg1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Dg1.MouseUp 'Returns the room for the datagrid row that has been clicked Dim pt = New Point(e.X, e.Y) Dim hti As DataGrid.HitTestInfo = Dg1.HitTest(pt) If hti.Type = DataGrid.HitTestType.Cell Then MsgBox(hti.Row & " " & hti.Column) Endif /// Thanks Richard Tag: Domain Name Tag: 99736
  - 20
    - How to get mouse event when using DesignSurface? Hi all, When I use DesignSurface and DesignSurface Manager to build a Designer, I only can use SelectionService's SelectionChange event to know which component is selected. But I don't know how to get mouse click in the component. Becuase I want to show a contextmenustrip in each component. Thanks, Tag: Domain Name Tag: 99733
  - 21
    - Email and .NET Hello, I am trying to format an email and have a .net application open up Outlook or Outlook Express so that the user can simply click Send and have the formatted email send from their email account. I am currently doing this the following way: Dim sParams As String Dim TheTo, TheSubject, TheBody As String TheTo = txtEmail.Text TheSubject = "" TheBody = "" sParams = "mailto:" & TheTo sParams = sParams & "?subject=" & TheSubject sParams = sParams & "&body=" & TheBody System.Diagnostics.Process.Start(sParams) The problem this is that it creates a new instance of Outlook every time the event is fired to create the email. All I want is for a new email to appear and add the data that I want. After about 6 or 7 emails are created this way, Outlook freezes up and stops working. Any suggestions will be greatly appreciated, This is vb .net. Chuck Tag: Domain Name Tag: 99730
  - 22
    - Edit different data types in a DataGrid in the same column on different rows Hi All Hopefully someone out there can answer this. I have a data source that displays a set of property names and values (each name/value pair will be displayed on a different row). I want to be able to enable the data source to be edited through the grid, but each of the values on different rows may be a different data type. I know I can apply a column style to set a whole column to display a ComboBox for a selection, a DateTimePicker, etc., but I'd like to know if there's a way to apply the style on a row-by-row basis. In doing this I should be able to display all the property name/value rows and have a different edit mode control appear for the value in each row depending on its data type. I should not neglect to mention that the data type of the value column can be defined programatically, as it's also held in the data source to describe the type of data in the value column. Can anyone please advise if this is possible, or if you'd like more information to clarify the problem. Thanks in advance, Sam. Tag: Domain Name Tag: 99728
  - 23
    - clicking MDI child does not activate form... Clicking an mdi child form will not activate the form unless I click on the sizeable border or title/caption bar. Sometimes it works correctly and I can click anywhere on the underlying child form and it pops to the front. Other times, I can type in text boxes of the child for, drop down combox boxes, etc, while the child form remains behind other forms. Gotta love .NET, right? I have noticed countless other posts on this topic going back to 2001, but no resolution. Has anyone been able to track down the cause for this behavior? Tag: Domain Name Tag: 99725
  - 24
    - studio deleted my resx file, and now it won't rebuild it properly! I'm using Visual Studio 2003. I have a C# Forms app with several forms. While working, Studio asked to check the .resx file of a particular form out of SourceSafe. It then completely erased the .resx file, leaving the form empty in the Designer. However, all the code is still in the .cs file! Most solutions I've found say to delete the offending .resx file, and Studio will rebuild it for you. Unfortunately, that's not happening here. I close the form, delete the file, and try to reopen the form, but it comes up with a blank form again. This is EXTREMELY frustrating. Does anybody know how to fix this? Lee Crabtree Tag: Domain Name Tag: 99724
  - 25
    - CheckedListbox and CheckOnClick I am working with the CheckedListBox and trying to get it to perform functionality similar to the Windows Explorer Choose Details window. The one thing I can't get to work is with the clicking on the checkbox part to autocheck. I can set the CheckOnClick to true, but I don't want it to autocheck if I click on the text part. Only if I click on the checkbox part. Anybody have any ideas on this? Lance Tag: Domain Name Tag: 99722
- Next
  - 1
    - translucent panel... i need to be able to adjust the opacity of a Windows Forms 'Panel' control. currently, this is available on Forms, but not on Panel controls. can someone please show me a trick to make this happen with panels or any other control that i can use without having to display another Window/Form? much appreciated, ben Tag: Domain Name Tag: 99721
  - 2
    - Multithreading in Form Hi All, I am new to C# thread programming. I got one issue. I appreciate if anybody can point what i am doing wrong here. I have created one C#.NET application (VS.NET 2003 and 1.1 Framework). It contains two forms. (Form1 and Form2) Form1 contains only one button. On click of this button two threads will be created. This thread will just display the Form2. Form2 contains only one ActiveX control(Created by me, Works fine in single thread app for last 3-4 years). When i excute this application, if i click on the Button on Form1, Threads are created and it shows the Form2 and ActiveX control. So far its fine. When i close the Forms created by the thread it crashes. When i use the Debuger it says "User Break Point Called" and Call Stack shows following : NTDLL! 7c901230() _CrtDbgReport(int 2, const char * 0x5f4d0cf0 THIS_FILE, int 374, const char * 0x00000000, const char * 0x00000000) line 353 AfxAssertFailedLine(const char * 0x5f4d0cf0 THIS_FILE, int 374) line 39 + 20 bytes AfxWndProc(HWND__ * 0x0141056a, unsigned int 8, unsigned int 16057944, long 0) line 374 + 21 bytes AfxWndProcDllStatic(HWND__ * 0x0141056a, unsigned int 8, unsigned int 16057944, long 0) line 57 + 21 bytes USER32! 77d48734() USER32! 77d48816() USER32! 77d4c63f() USER32! 77d4c665() SYSTEM.WINDOWS.FORMS! 7b823b1e() SYSTEM.WINDOWS.FORMS! 7b823a2b() SYSTEM.WINDOWS.FORMS! 7b896ca4() SYSTEM.WINDOWS.FORMS! 7b82291b() 0096453a() USER32! 77d48816() USER32! 77d4b4c0() USER32! 77d4b50c() NTDLL! 7c90eae3() USER32! 77d48734() USER32! 77d5418d() USER32! 77d53fd9() USER32! 77d5b82a() USER32! 77d54e28() USER32! 77d561b3() USER32! 77d6a92e() USER32! 77d6a294() USER32! 77d95fbb() USER32! 77d96060() USER32! 77d80577() USER32! 77d8052f() __crtMessageBoxA(const char * 0x032fb9c8, const char * 0x102579a0 `string', unsigned int 73746) line 65 CrtMessageWindow(int 2, const char * 0x5f4d0cf0 THIS_FILE, const char * 0x032fcafc, const char * 0x00000000, const char * 0x032feb20) line 520 + 22 bytes _CrtDbgReport(int 2, const char * 0x5f4d0cf0 THIS_FILE, int 969, const char * 0x00000000, const char * 0x00000000) line 419 + 76 bytes AfxAssertFailedLine(const char * 0x5f4d0cf0 THIS_FILE, int 969) line 39 + 20 bytes CWnd::DestroyWindow() line 969 + 21 bytes COleControl::OnFinalRelease() line 358 CCmdTarget::InternalRelease() line 223 CCmdTarget::ExternalRelease() line 234 COleControl::XQuickActivate::Release(COleControl::XQuickActivate * const 0x03356630) line 69 OLE32! 7750de71() OLE32! 7750dbd2() OLE32! 77554a4f() OLE32! 77554a30() OLE32! 77564daf() OLE32! 7750221e() OLE32! 77502171() OLE32! 774ff221() OLE32! 774fee88() OLE32! 775131f0() OLE32! 774fd141() OLE32! 774fd0e9() NTDLL! 7c9011a7() NTDLL! 7c919213() KERNEL32! 7c80cce7() KERNEL32! 7c80b511 My C#.Net app source code looks like this: /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } void MyThreadFunction() { Form frm = new Form2(); //Show the Form which contains the SymFacX. Here "using" is the keyword which will release the frm object(Form2) once its job is done. //If we didnt release this frm object. ActiveX will throw an excetion. As SymFacX will try to delete itself but still frm object contains the reference. using(frm) { frm.ShowDialog(); } //frm.Dispose(); //GC.Collect(); } private void button1_Click(object sender, System.EventArgs e) { //Create Thread newThread1 = new Thread(new ThreadStart(MyThreadFunction)); //Start the Thread newThread1.Start(); //Create Thread newThread2 = new Thread(new ThreadStart(MyThreadFunction)); //Start the Thread newThread2.Start(); } private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e) { newThread1.Join(0); newThread2.Join(0); Environment.Exit(0); } Tag: Domain Name Tag: 99720
  - 3
    - Setting combo box items property? I am building a user control that has a combo box (comboBoxMain) as a constutient control. The user control has an Items property, which will set the items of the combo box. I want the user control Items property to be browsable at design-time, so the user of the control can click the properties, enter a list of items in the String Collection Editor and have them appear in the combo box. Here's the code I'm using now: [Browsable(true)] [EditorBrowsable(EditorBrowsableState.Always)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] [Editor("System.Windows.Forms.Design.StringCollectionEditor,System.Design", "System.Drawing.Design.UITypeEditor, System.Drawing")] [Description("The list of objects in the combo box")] public ComboBox.ObjectCollection Items { get { return comboBoxMain.Items; } set { comboBoxMain.Items = value; } } The Editor attribute brings up the String Collection Editor, but it isn't retrieving any items I place in the combo box. And nothing that I enter in the editor is making it back to the combo box. What do I need to do to complete the connection between the user control Items property and the combo box Items property? Thanks. -- David Veeneman Foresight Systems Tag: Domain Name Tag: 99716
  - 4
    - No touch deployment - internet cache full We have had a few instances in our organization that the user was unable to run a no-touch deployment exe from our intranet. Clearing their full internet cache corrected this problem. This happened in 2 scenarios: 1. When trying to run the no touch .exe over the intranet would do nothing. 2. When trying to run the .exe over the intranet the user would run their old cached copy of the application and not download the latest from the server. In both scenarios clearing their internet cache and launching the application again corrected this problem. I thought the idea with internet cache is First In, First Out... in thus... cache would be cleared to accomodate new temporary internet files. Is this correct or is there an issue with no-touch deployment in this regard. Has anyone else ran into this problem, and if so what solutions have you come up with. Remember we have a large organization and no touch deployment applications are being used by 100+ individuals. One way I know would be to write a login script to clear the internet cache... of course.. not every user will reboot their PC every night... and isn't ideal for other reasons. Thanks in advance... Tag: Domain Name Tag: 99715
  - 5
    - ConfigurationManager app.config Dear Friends, I have been trying to get the following to work properly, but with little luck. I have created a class that inherits from ConfigurationSection. I then added a <configSections> ... <section name="test"> in a new app.config (which I added manually to my project). It seems to be able to read the app.config, but not write back to it. I seem to have a partial/temporary working config file that is created in the bin\debug directory called XXX.vshost.exe.config. It seems to temporarily store the proper values when I save the settings, but seeing that it is rebuilt dynamically everytime the application is run, I lose all settings. What gets to me is that the settings are not written to the app.config file. I get no errors when I execute .Save method. Just no info is written. Does anyone have an example in VB.NET or a guide/tutorial, etc... In essence, I want to use my ConfigurationSection derived class to be able to load and save a custom section in the app.config file as I have seen others do, but can't get it to work myself. Also, any help on how to properly set up an app.config file with the <configSections> etc... properties. Regards, Giovanni Tag: Domain Name Tag: 99713
  - 6
    - Data binding a ListBox to a List<T> I have 2 list boxes on the form. Each listbox is bound to a different List<T>. My goal is for the user to select an item in ListBox1, click a button, and have that item moved to ListBox2. The way I approached this was to have a populated List<T1> bound to ListBox1. I set the DataSource, DisplayMember, and ValueMember properties of ListBox1 and the items in the List<T1> were correctly shown in the listBox. I bound ListBox2 to List<T2>. Since List<T2> had nothing in it, ListBox2 correctly showed no items. I thought that if I removed an item from List<T1>, that ListBox1 would update to reflect that but it doesn't seem to work that way. Similarly, I thought that by inserting an item into List<T2>, that the ListBox2 would update to reflect the addition. It does not seem to work that way. How can I get the ListBoxes to update and show the current contents of their respective List<T> objects? Is there a way to "rebind" them? Thanks, Chris Tag: Domain Name Tag: 99712
  - 7
    - Create something of ContextMenuStripItem type ???? f I can declare a menu item as : Dim mnuItem As MenuItem then why cant I declare something of ContextMenuStripItem type. There is a collection of items for a contextmenustrip.!! I have a method : private void NewLoad(object sender, System.EventArgs e) { //I need to do something like MenuItem mn = (MenuItem)sender; } In debug when I hover my mouse over "object sender" I get "[System.Windows.Forms.ContextMenuStrip], Name: contextMenuStrip1, Items: 6}" I am baffled Tag: Domain Name Tag: 99704
  - 8
    - Disable ArrowKey Hello, I have a datagrid and I would that if I press an arrow key (up and down) the cursor don't move up and down on the datagrid. There is a solution for my problem? I have used keypress and keyup but don't capture the arrow keys. Only KeyDown capture ArrowUp and ArrowDown but e.Handler = True don't avoid the event "press arrow key" and the cursor move in the datagrid. Thank you Marco Tag: Domain Name Tag: 99703
  - 9
    - Move Files I have directory say C:\d1. It has a file say f1. I have to move this file to a sub directory under c:\d1. i.e., I have to move f1 into C:\d1\d2. I use fileSystemInfo.move for this but I get an error as follows - {"The process cannot access the file because it is being used by another process."} how do I move. I tried to copy the file and then delete...same problem. any solutions? Tag: Domain Name Tag: 99701
  - 10
    - Is there any slide show control for win-form? Is there any slide show control for win-form? Tag: Domain Name Tag: 99700
  - 11
    - Open SDI form from MDI Parent I have an application that has a main mdi parent window to navigate and perform basic function. I need the mdi window to accomplish everything I need in there. I also need to be able to open up records in a new SDI window. When I attempt to open the form it is not given focus and is opened behind the mdi parent form. How do I give it focus and have it be opened on top. I do not want it always on top. Just when it opens. Here is my code. Dim exists As Boolean = False For Each f As Form In My.Application.OpenForms If f.Tag = nodeTag.Substring(1) Then exists = True f.Activate() End If Next If Not exists Then Dim act As New frmActivities act.Tag = nodeTag.Substring(1) act.Show() act.Activate() End If Tag: Domain Name Tag: 99695
  - 12
    - Cannot print a PrintDocument Hi, I not beeing able to print a document created using PrintDocument. I can preview it, but when I try to print it, I receive an "Invalid Parameter" exception in a "DrawString" method execution. I tried changing the default printer and the printer settings but it didn't work. What can I do to make it print? Thank you, Roby Eisenbraun Martins Tag: Domain Name Tag: 99691
  - 13
    - deriving DataGridTextBoxColumn - behaviour on new rows Hello I have derived a class from DataGridTextBoxColumn and am getting some behaviour which I do not understand and I would like to know where I am going wrong. The problem is like this. I have a datagrid, lets say with four columns. Two columns have my derived style and two have the default DataGridTextBoxColumn. When you make changes to the datagrid there is a button to press to validate and then send the changes back to the database to be written. The problem comes when you click in the "new row" at the bottom of a datagrid (the blank row with the star in the header). If you click into and then straight off the default DataGridTextBoxColumn in the new row, the UI indicates that no new row has been created, and if you then save the changes, no new rows are added to the database. However when you click on and then away from the derived class, the UI performs in the same way - it appears as if there are no new rows added, but when you click save changes you get a new row written to the database - with all the row default values. This implies that the row was created in the underlying DataTable, but that fact was not reflected in the UI of the datagrid. For reasons that I shall not go into this is a big problem for my application. What I would really like to know is what I need to do to get my derived column style to behave in the same way in this situation as the DataGridTextBoxColumn. I.e. click on and away - the UI implies that no row has been created and that is in fact the case when writing changes to the database. Thanks in advance for any light that can be shed on this issue! I've been reading lots of articles on MSDN but none that I have found seems to cover this situation! Best Regards David Smith Tag: Domain Name Tag: 99688
  - 14
    - Fereshing an open form Hi I want to refresh the data in an open form from another form by calling a procedure. Is this possible? thanks Jonathan -- =============== Jonathan Crawford jc@tgsi.net =============== Tag: Domain Name Tag: 99687
  - 15
    - Hi Hi, I have made setup project in my solution. I would like to include Windows installer 3.1 (since it is needed for installations) and runtime of Framework 2.0. How to do include runtime of Framework and and Windows Installer in setup package? I don't want when installing my program to connect to internet and download this components. .NET Framework Launch Condition In help says: if you are distributing your application on CD-ROM, you should include the redistributable file on the CD and change the InstallUrl property to a relative file path. If my solution is in folder C:\MySolution , what should I write in InstallUrl property, so that it is a relative path. Thanks in advance, John Tag: Domain Name Tag: 99686
  - 16
    - ClickOnce Install returns XML I have deployed an application with ClickOnce Publish wizard to a web site. But when I click web page Install button the web server just returns the content of the .application file as XML to the browser on my own client. I made a quick try on two other clients and it seems that they are capable to interpret the web page correct ..... it is really a strange issue. trying the following command line in cmd.exe: rundll32.exe dfshim.dll,ShOpenVerbApplication http://www.xxxx.com/ConfigurationTest/ConfigurationTest.application Note: replace "http://www.xxx.com/ConfigurationTest/ConfigurationTest.application" with your clickonce application's deploy manifest URL. With this we can determine if the client side's dfshim.dll works well with the *.application files. However, even with dfshim.dll information, it is still hard for us to troubleshoot out this issue. Maybe we need re-install the Win2000 machine... This works.... Ok, I think you may first download the *.application file to the local disk, then double click this application file to do a test. Once your file association is correct, it should display the clickonce checking dialog. This works... I think there is more of a problem here. I am getting the same results on windows xp pro machines. I tried it on 3 different machines. The only machine that is able to install the application from the publish.htm is windows 2003 server that the application was publish from. But not an any (at least the 4 i've tried) xp pro machine... Ideas? Tag: Domain Name Tag: 99684
  - 17
    - reading data from a datagridview How can I read data rows from a datagridview and insert it into the database. Tag: Domain Name Tag: 99683
  - 18
    - window size and position - FixedToolWindow Hi, I'm using C# in VS2003 with .Net Framework 1.1 sp1 installed. I have a tool window that is sized and positioned to cover a certain part of another window. On my desktop machine this works perfectly however when I run it on my laptop the window is neither the correct size or position. If I close it and open it again it is moved slightly dwon and to the right each time. The size seemingly has nothing to do with the size the window is set too, all the controls appear in the correct place and size though. So I thought I must be using a different version of the framework on both machines so I spent ages making sure everything was the same version and as far as I can tell they are. If I take the version compiled on the laptop and run it on the desktop it works so it would appear that it is something to do with versions rather than the code but I'm clueless. My window uses FixedToolWindow and I've noticed that even at design time on the laptop its not showing a short title bar like a tool window should have. Has anyone come across this before? Please help!! I'm so annoyed because I thought I'd do this project in C# because it would be quick and easy but now I'm left wondering why if I cant give my client something that works identically on different machines why I didnt just do it in C++. I'm sure I wouldnt be having this problem then! Regards Josh Tag: Domain Name Tag: 99678
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    - Keydown Event A tab control receives all Keydown events when a key is pressed in any of the controls on the Tab control. Is it normal behaviour? Tag: Domain Name Tag: 99677
  - 20
    - Blank DataGrid Hello: This must be quite simple! But I couldnt figure out whats wrong: I have this following code, and I still see a blank datagrid: Imports System.Data Imports System.Data.SqlClient Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim conn As New SqlConnection("****") Dim da As New SqlDataAdapter("Select * from tblNote where CDID = 55", conn) Dim ds As New DataSet Dim dt As New DataTable da.Fill(ds) If (ds.Tables(0).Rows.Count > 100) Then dt = Get100Rows(ds.Tables(0)) End If dt.AcceptChanges() Dim dv As New DataView(dt) Try DataGridView1.DataSource = dv Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub Private Function Get100Rows(ByRef dt As DataTable) As DataTable Dim dt1 As New DataTable Dim i As Integer For i = 0 To 99 dt1.ImportRow(dt.Rows(i)) Next dt1.AcceptChanges() Get100Rows = dt1 End Function End Class I can see that the DataTable dt has 1000 rows. The datagrid does get populated if I were to have Tables(0) of the DataSet ds as the DataSource. TIA. Skandy Tag: Domain Name Tag: 99671
  - 21
    - DataGridView Columns Collection Editor Hello I am creating a UserControl that has a DataGridView control as a member. I want to expose the column collection of the DataGridView, as a property of my control. in my code I have: [Browsable(true)] public DataGridViewColumnCollection myDGVCC {... but I get the generic collection editor, not the editor the normally is invoked when modifying the columns of a DatGridView control. Is there any way I can set the Columns property of my UserControl to use the proper editor. Thanks in advance (Sorry for cross posting, not sure for the best place, and my english to) Tag: Domain Name Tag: 99670
  - 22
    - VB6-MDI child in .NET application Is it possible to integrate a VB6 MDI child form into a .NET application? How is it done? Thank you Karl-Heinz Tag: Domain Name Tag: 99668
  - 23
    - How to catch clicks on contained controls in the form. I would like to capture, in my form, any mouse clicks on controls contained in the form. I know I can do this using a mouse hook, but that has a few problems with catching clicks on dialogs the form owns that I have not been able to work out. I want to catch the click, so I can lock the data source, and then let the click go on its merry old way. Any simple solutions that I am overlooking? Thanks, /ken Tag: Domain Name Tag: 99666
  - 24
    - Open Non-Modal Form from MDI Application I have an application that has an MDI main page. I would like to open up multiple non-modal forms for some of the items within that MDI application. Essentially, I want to open SDI forms from and MDI main application. I have the forms open, but they don't open up on top and with focus. I need to know how to have them open on top with focus. Here is the code I have. Dim exists As Boolean = False For Each f As Form In My.Application.OpenForms If f.Tag = nodeTag.Substring(1) Then exists = True f.Activate() End If Next If Not exists Then Dim act As New frmActivities act.Tag = nodeTag.Substring(1) act.Show() act.Activate() End If Tag: Domain Name Tag: 99661
  - 25
    - Adding Control to a Form from another thread In the background I want to load some control after form loaded. I tried threading but it does not allow me to add control because current thread have not created the form. Also please tell me what BackGroundWorker control suppose to do. How do I do it. Please advise me. Thanks, Dan Tag: Domain Name Tag: 99658

HI, I have questation about computer domain . How I simpli get this
information from computer ? I want use systeminformation , properties
userdomainname , but this is user domain ...
thanx
marek

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RE: Domain Name by AMercer

AMercer
Fri Apr 07 08:13:02 CDT 2006

> HI, I have questation about computer domain . How I simpli get this
> information from computer ? I want use systeminformation , properties
> userdomainname , but this is user domain ...

How about the environment variable USERDOMAIN?

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RE: Domain Name by Marek

Marek
Fri Apr 07 08:59:01 CDT 2006

the user domain is domain for user , or computer ?

"AMercer" wrote:

> > HI, I have questation about computer domain . How I simpli get this
> > information from computer ? I want use systeminformation , properties
> > userdomainname , but this is user domain ...
>
> How about the environment variable USERDOMAIN?

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RE: Domain Name by AMercer

AMercer
Fri Apr 07 10:28:02 CDT 2006

> the user domain is domain for user , or computer ?
>
> "AMercer" wrote:
>
> > > HI, I have questation about computer domain . How I simpli get this
> > > information from computer ? I want use systeminformation , properties
> > > userdomainname , but this is user domain ...
> >
> > How about the environment variable USERDOMAIN?

Sorry, I misunderstood your question. You may want environment variable
COMPUTERNAME, or you may want to use api IADsWinNTSystemInfo to get the
primary domain controller name. I'm not sure, and I'm on shaky ground here.

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