Simple Data Grid DataSource Problem

TheMSsForum.com: The Microsoft Software Forum

The MSS Forum ‹ Winforms
- Archive
  - Biz
  - MCSE
  - CRM
  - Drivers
  - Framework
  - ADO
  - ASP
  - Compact
  - Forms
  - Dotnet
  - C#
  - VB
  - FontpageGen
  - Excel
  - WorkSheet
  - Exchange
  - Setup
  - Fox
  - Fontpage
  - ASP
  - IIS
  - Entourage
  - Money
  - Messanger
  - PocketPC
  - Powerpoint
  - Project
  - Publisher
  - Excel
  - VB
  - Security
  - Portal
  - Services
  - SQLServerDev
  - SVCS
  - SQLServer
  - VB
  - VC
  - MFC
  - ExcelGen

- Previous
  - 1
    - CollectionEditor: How to turn on "description" panel? If I use a PropertyGrid directly, the "description" panel is available and can be turned on and off and resized, etc. But if I use a CollectionEditor, the property grid displayed there doesn't appear to honor the request to display the "description" panel even though the properties of the items in my collection all have description attributes. How can I get the description panel for the property grid portion of the CollectionEditor to be displayed? Thanks! -- TB Tag: Simple Data Grid DataSource Problem Tag: 82161
  - 2
    - CollectionEditor: How to specify arbitary list of values for prope I have a collection of items that I allow the user to edit by bringing up a CollectionEditor. The editor conveniently displays all the properties of my item class and works pretty well. However, I am changing one of the properties from being of an enumerated type to being a string value that should be set from a list of possible values determined at runtime. The enumerated value is automatically handled by the PropertyGrid as a dropdown list. How can I override this behavior to supply the list of allowed values at runtime? I have been successful at plugging in my own derivation of a UITypeEditor for this property but I cannot figure out how to supply the instantiated type editor the list of values to display in the dropdown. Thanks! -- TB Tag: Simple Data Grid DataSource Problem Tag: 82160
  - 3
    - WinForms question... Hi! How do I determine the windows standard vertical scrollbar width in pixels (set from the display properties) from c# code? Peeter. Tag: Simple Data Grid DataSource Problem Tag: 82155
  - 4
    - Scrolling during a Drag Operation Hello all, I have a UserControl that is in a Panel. The Panel's AutoScroll is set to true. When the user drags data over the Panel and hits the edges, I want the control to scroll. I've managed to get this all to work. But I have a few questions: - Is there a standard distance from the edge of the window that the mouse should be before scrolling starts? - How much does one scroll each instance? I've tuned mine to match the speed of the machine I'm doing development work on... Obviously this may not work for others. And one technical question. To do the scrolling I adjust the AutoScrollPosition property while handling the OnDragOver event. If I do this every time the OnDragOver event is fired, my scroll bars move, but nothing is re-drawn (until the scroll bars go as far as they can). On the other hand, if I update the auto scroll position every other time OnDragOver is fired, then everything works as expected: the scroll bars move and the panel is updated. This seems odd, and I find no details on this in the documentation or in a search of the newsgroups. One other question. What is DragDropEeffects.Scroll used for? Is there any point to it? Or is it just there in case you want to change cursors. Finally -- I'm doing my scrolling in OnDragOver. Should I do it in GiveFeedback instead? I'm a little unclear how the framework expects me to seperate the tasks (currently, since I have no special cursors, I do implement GiveFeedback). Cheers, Gordon. Point mouseCurrent = PointToClient(new Point (drgevent.X, drgevent.Y)); /// /// Is it time to scroll (if possible)? Skip every other call to give /// the rest of the update framework a chance to catch up. /// //// _lastDidIt switches from true to false on each call, it is a method variable. int dragboarder = 20; int dragscrolldist = 5; if (mouseCurrent.Y > Height-dragboarder) { if (_lastDidIt) AutoScrollPosition = new Point (-AutoScrollPosition.X, -AutoScrollPosition.Y+dragscrolldist); } if (mouseCurrent.Y < dragboarder) { if (_lastDidIt) AutoScrollPosition = new Point (-AutoScrollPosition.X, -AutoScrollPosition.Y-dragscrolldist); } if (mouseCurrent.X > Width-dragboarder) { if (_lastDidIt) AutoScrollPosition = new Point (-AutoScrollPosition.X+dragscrolldist, -AutoScrollPosition.Y); } if (mouseCurrent.X < dragboarder) { if (_lastDidIt) AutoScrollPosition = new Point (-AutoScrollPosition.X-dragscrolldist, -AutoScrollPosition.Y); } _lastDidIt = !_lastDidIt; /// /// Make sure everything is re-drawn. /// Invalidate(); Tag: Simple Data Grid DataSource Problem Tag: 82150
  - 5
    - Scrolling in DataGridView in Visual Studio 2005 Microsoft has confirmed that this is bug with VS 2005. So we can keep our fingers crossed till they give us the solution. Refer the link for more details http://lab.msdn.microsoft.com/productfeedback/viewfeedback.aspx?feedbackid=2ce60503-bf84-44d0-af9f-ee26b6f1ad21 -- Thanks Arvind Tag: Simple Data Grid DataSource Problem Tag: 82148
  - 6
    - Problem with databinding and RowChanging event I created a method to handle the RowChanging event to validate some data in a databound form. I am using BindingManagerBase.EndCurrentEdit to trigger the RowChanging event. If the data cannot be validated then an exception is raised in the RowChanging event and catched after the call to EndCurrentEdit. The problem I am having is that after calling EndCurrentEdit and raising the exception inside the RowChanging handler, the values in the controls in the form that are not modified again are not fetched again. For example... I have a form with 2 edit boxes which are data bound. Edit1 and Edit2. The original values for each are "mary" and "smith" respectively. If I modify Edit1 to contain "John" and call EndCurrentEdit, the RowChanging event is fired. If I check the Current version of the column it contains "Mary" and the proposed version contains "John". If I raise an exception within the event handler then the data is not saved to the dataset as expected. At this point I still have the edit boxes containing "John" and "Smith"... I am not calling CancelCurrentEdit because I don't want to roll back to the current values... I am simply letting the user know that the data entered is incorrect. If at this point I edit the Edit2 to "Roberts" and call the EndCurrentEdit method, the RowChanging event is fired... but if I check the proposed version of the Edit1 bound column, it contains the Current value "Mary" and NOT the value currently in Edit1. If the user does not edit the Edit1 control directly, the value is not reflected when EndCurrentEdit is called. Thanks, Jeronimo Tag: Simple Data Grid DataSource Problem Tag: 82147
  - 7
    - Design-time control options Hi all, How can I show checkbox for bool properties of my custom control in design-time. The usage of DesignerVerb shows just plain MenuItem. I am wondering how TextBox control shows a CheckBox for MultiLine option. (See a TextBox control and its MultiLine option in VS.NET 2005 Windows Form Design Mode) Yongkee Tag: Simple Data Grid DataSource Problem Tag: 82146
  - 8
    - Webbrowser control + MDI + Disable ctrl-n I am using the Webbrowser control in a MDI application. The Webbrowser control is in a User Control which is loaded into a form. I have implemented IDocHostUIHandler for the User Control and have set the SetUIHandler to the User Control (this). I have also disabled ctrl-n by implementing TranslateAccelerator.The problem is, as the mdi form is loaded initially, I can do ctrl-n and it will popup a new IE browser. Once I click anywhere on the browser, then disables ctrl-n. Any ideas? Tag: Simple Data Grid DataSource Problem Tag: 82145
  - 9
    - Hosting .NET Windows forms UserControl in IE Hello, I need to host .NET Windows forms UserControl in Internet Explorer. I do it by including <OBJECT> tag in my aspx page: <OBJECT id="mycontrol1" classid="MyControl.dll#MyControlNamespace.MyControl" width=800 height=300 style="font-size:12;" VIEWASTEXT> </OBJECT> everything works fine, MyControl.dll gets downloaded into the download cache and IE displays the control. The problem however is the fact that the browser needs to download MyControl.dll file. Our clients will block downloads of .DLL and .EXE files. I would like to use CAB file instead, for example, I tried codebase attribute as in the following: <OBJECT id="mycontrol1" codebase="MyControl.cab" classid="MyControl.dll#MyControlNamespace.MyControl" width=800 height=300 style="font-size:12;" VIEWASTEXT> </OBJECT> but it does not work. Is there a way of making IE to download a CAB file, just as it does for an ActiveX components, and extract contents into the download cache, so that no DLL file needs to be downloaded? Thank you, Slava. Tag: Simple Data Grid DataSource Problem Tag: 82143
  - 10
    - Combo Control array - Selection hello , I have created a Control array for a ComboBox to populate on a tabPage . My concern is that I 'm using a List to populate the Combo Box like this .. ComboArray[i].Items.Add(List[i)]; ComboArray[i].DataSource = List; The Combo Box gets populated with all the values in the List ( Thats what I wanted ) But when i select a value in the First Combo box the Changes reflects in all the boxes created Example if if there were 6 values from 1,2,3 ..6 in the all Combo Dropdown list . when I select 5 in the 3rd all the Combo's selected value changes to 5. How do I get specifice values in different Combo According to my selection ? Thanks Sylesh Nair Tag: Simple Data Grid DataSource Problem Tag: 82140
  - 11
    - Getting ToolTip from a control.. In a control it is usefull in some cases to know if it is included on a toolTip, HelpProvider etc. How do you access this information? I have the code below which uses reflection to pickup the IContainter named "Components" that the windows designer uses and this seem to work but I am wondering if there is a way to do this without using reflection? Anyone else have a better way of doing this??? /// <summary> /// Method: This gets the ContainerControl and then looks for an /// IContainer field named "components" /// used by the windows designer. It uses reflection. /// /// (can be used to look for ToolTips, ErrorProviders, HelpProviders etc) /// </summary> /// <returns></returns> public IContainer GetContainerComponents(Control control) { IContainer components = null; try { if (control.Container != null) { components = control.Container; } Object containerControl = control.GetContainerControl(); if (containerControl != null) { //Using Reflection to get components... BindingFlags binding = BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public; FieldInfo componentField = containerControl.GetType().GetField("components",binding); if (componentField != null) { components = (IContainer)componentField.GetValue(containerControl); } } } catch {} return components; } //Eg: Deactivates toolTips for a Control in private void DeactivateControlToolTips(Control control) { IContainer components = GetContainerComponents(control); foreach (Component child in components.Components) { if (child is System.Windows.Forms.ToolTip) { if ( ((System.Windows.Forms.ToolTip)child).GetToolTip(this).Length > 0) { ((System.Windows.Forms.ToolTip)child).Active = false; } } } } Tag: Simple Data Grid DataSource Problem Tag: 82134
  - 12
    - Winform scrollbars and Maximize I have an MDI application that has 4 child windows. When my application opens, it initialially opens all of the forms un-maximized. When I then choose to maximize all of the windows and then in my code switch the app to one particular window, that one window does not appear maximized. Instead, I have to double-click on the title bar and then in the control box I see the option to maximize. Otherwise the control box shows what appears to have 'restore' capability. Not sure if this explaination makes sense. I have the autoscroll set to true on the window because the controls on the window go down farther than the height of the window. Is there something to do with the autoscroll that could be causing this behaviour? Thanks. STom Tag: Simple Data Grid DataSource Problem Tag: 82133
  - 13
    - How to hide form without hiding its control? Hi .. How to make form invisible without hiding control on the form. Thanx.. Tag: Simple Data Grid DataSource Problem Tag: 82129
  - 14
    - Need to retrieve font name instead of Typeface name Dear Readers, I need to retrieve the font name of a TTF file. When I use the following code I retrieve the Typeface name but not the name I see on the top of the preview screen when I doubleclick the TTF file. Does anyone know how I can retrieve that name? Dim _PrivateFontCollection As New _ System.Drawing.Text.PrivateFontCollection _PrivateFontCollection.AddFontFile("C:\MyFont.TTF") Dim FontName as String FontName =3D _PrivateFontCollection.Families(Index).Name Many thanks, R=E9my Samulski Tag: Simple Data Grid DataSource Problem Tag: 82128
  - 15
    - How to handle WM_NCPAINT event in C#? Hi All, I need to draw on Non client area for that i need to handle WM_NCPAINT event. Please help me and send demo code if possible. thanx Amar Tag: Simple Data Grid DataSource Problem Tag: 82123
  - 16
    - Inherited User Control not showing in designer I have a user control that inherits from another user control. The base user control works fine in the designer, I can see all of the controls, etc... However when I open the derived control in the designer, all I see is a grey square with no controls. I have tried attaching to the IDE with another instance's debugger, but no exceptions are being thrown when the control is open. Here is how the constructors are setup: Base Control: public class MyBase : System.Windows.Forms.UserControl { [Browsable(false)] protected AnotherObject _oObject; [Browsable(false)] public AnotherObject oObject { get{ return _oObject; } set{ _oObject= value; } } public MyBase() { _oObject= new AnotherObject (); } public MyBase (AnotherObject oObject) { InitializeComponent(); _oObject= oObject; } } Derived Control: public class MyDerived: MyBase { public MyDerived(AnotherObject oObject) : base(oObject) { InitializeComponent(); } public MyDerived() : base() { } } Please help! Tag: Simple Data Grid DataSource Problem Tag: 82118
  - 17
    - Prompt if changes for databinding Hi, I am writting a data navigator where if the user edits a form and tries to move to a different record on the dataset without saving the current record, he is prompted to save it before the BindingManagerBase position is changed. I created a navigator class that includes a dirtyRow flag to check when the user selects to move to a different record. I am trying to keep track of changes by adding events to TextChanged on the edit boxes of my form. If a textbox changes then the dirtyRow flag is set. However I am encountering some problems since the TextChanged event is also fired when text is changed due to the databinding for the control. I added an event for PositionChanged on the BindingManagerBase that sets dirtyRow to false and in general this works because when the position is changed, the databinding sets the dirtyRow to true on the TextChanged event but the PositionChanged event is called after the TextChanged event and therefore the newly visited row is not considered dirty until the user changes the text on the edit boxes. However this does not work the first time the form is created because in that particular case, the TextChanged event from the databinding is called AFTER the PositionChanged event. My question... 1- Is there any way of knowing IF the EndCurrentEdit will actually modify the underlying dataset? I noticed that RowState for a row changes to Modified after EndCurrentEdit if there are changes. I want to prompt the user to keep or save changes only if changes exist. 2- Is there an event that I can use to know that databinding for the form on the current position has completed so I can set the dirtyRow flag to false? Thanks, Jeronimo Tag: Simple Data Grid DataSource Problem Tag: 82116
  - 18
    - Tabbing Into a Custom DatagridColumnStyle at ColIndex(0) This is a duplicate post. I wanted to be sure to post in the managed group to take advantage of my subscription. Sorry for the initial mispost. JT Hello, I am literally banging my head against the wall trying to figure out how to use the tab key to move from the last column in a datagrid row to the first column in the next row when that first column is a Custom DataGridColumnStyle (in this case, as combobox). I have seen George Shepherd's suggestion on subclassing the embedded control, and have tried three different ways of doing this, as shown below. NONE of them work. I think I know why... After having tabbed through my datagrid, when I then look at the trace for "Debug.WriteLine(keyData.ToString)", I see Tab for every move I made from one column to the next ON THE SAME ROW. But when my tab key cause a new row to become current, my debug trace shows nothing at all. Question is, how to solve this problem. Can anyone enlighten me as to exactly how the datagrid moves to a new row in response to the tab key? Maybe if I can understand that, I can achieve what I am trying to achieve. Thanks. Public Class DataGridComboBox Inherits ComboBox Public Sub New() MyBase.New() End Sub Public isInEditOrNavigateMode As Boolean = True Protected Overrides Function ProcessDialogKey(ByVal keyData As System.Windows.Forms.Keys) As Boolean Dim dG As DataGrid = DirectCast(Me.Parent, DataGrid) Dim curCell As DataGridCell = dG.CurrentCell With curCell Dim cNum As Integer = .ColumnNumber Dim colIndex As Integer = dG.TableStyles(0).GridColumnStyles.Count - 1 Debug.WriteLine(keyData.ToString) If keyData = Keys.Tab Then 'No more columns in row --> go to nbew row If cNum = colIndex Then dG.CurrentCell = New DataGridCell(.RowNumber + 1, 0) Return True 'More columns in current row Else 'Tab normally dG.CurrentCell = New DataGridCell(.RowNumber, .ColumnNumber + 1) Return True End If End If End With Return MyBase.ProcessDialogKey(keyData) End Function 'Private WM_KEYUP As Integer = &H101 'Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) ' If m.Msg = WM_KEYUP Then ' Return ' End If ' MyBase.WndProc(m) 'End Sub 'Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) ' If m.WParam.ToInt32 = CInt(Keys.Tab) Then ' Return ' End If ' MyBase.WndProc(m) 'End Sub 'Private Sub DataGridComboBox_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown ' If e.KeyData = Keys.Tab Then ' e.Handled = True ' End If 'End Sub End Class -- John Expand AllCollapse All -- John Tag: Simple Data Grid DataSource Problem Tag: 82114
  - 19
    - Tabbing Into a Custom DatagridColumnStyle At ColIndex(0) Hello, I am literally banging my head against the wall trying to figure out how to use the tab key to move from the last column in a datagrid row to the first column in the next row when that first column is a Custom DataGridColumnStyle (in this case, as combobox). I have seen George Shepherd's suggestion on subclassing the embedded control, and have tried three different ways of doing this, as shown below. NONE of them work. I think I know why... After having tabbed through my datagrid, when I then look at the trace for "Debug.WriteLine(keyData.ToString)", I see Tab for every move I made from one column to the next ON THE SAME ROW. But when my tab key cause a new row to become current, my debug trace shows nothing at all. Question is, how to solve this problem. Can anyone enlighten me as to exactly how the datagrid moves to a new row in response to the tab key? Maybe if I can understand that, I can achieve what I am trying to achieve. Thanks. Public Class DataGridComboBox Inherits ComboBox Public Sub New() MyBase.New() End Sub Public isInEditOrNavigateMode As Boolean = True Protected Overrides Function ProcessDialogKey(ByVal keyData As System.Windows.Forms.Keys) As Boolean Dim dG As DataGrid = DirectCast(Me.Parent, DataGrid) Dim curCell As DataGridCell = dG.CurrentCell With curCell Dim cNum As Integer = .ColumnNumber Dim colIndex As Integer = dG.TableStyles(0).GridColumnStyles.Count - 1 Debug.WriteLine(keyData.ToString) If keyData = Keys.Tab Then 'No more columns in row --> go to nbew row If cNum = colIndex Then dG.CurrentCell = New DataGridCell(.RowNumber + 1, 0) Return True 'More columns in current row Else 'Tab normally dG.CurrentCell = New DataGridCell(.RowNumber, .ColumnNumber + 1) Return True End If End If End With Return MyBase.ProcessDialogKey(keyData) End Function 'Private WM_KEYUP As Integer = &H101 'Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) ' If m.Msg = WM_KEYUP Then ' Return ' End If ' MyBase.WndProc(m) 'End Sub 'Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) ' If m.WParam.ToInt32 = CInt(Keys.Tab) Then ' Return ' End If ' MyBase.WndProc(m) 'End Sub 'Private Sub DataGridComboBox_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown ' If e.KeyData = Keys.Tab Then ' e.Handled = True ' End If 'End Sub End Class -- John Tag: Simple Data Grid DataSource Problem Tag: 82113
  - 20
    - How do you get a 2 day response from Microsoft I posted a question on "MDI Client Problem" on 12/22/04 and I'm still waiting for a response. -- tsiGeorge Tag: Simple Data Grid DataSource Problem Tag: 82108
  - 21
    - Resource Files Hi All - Happy Holidays I'm struggling to understand how to make resource files work in a multi-lingual vb.net windows app - and feel real stupid. I've read MCSD books and Visual Studio Help articles, but just don't get it. Duh. The ResourceManager class and resource files within a project should be able to communicate. Any help or reference to examples greatly appreciated Regards, SC Tag: Simple Data Grid DataSource Problem Tag: 82104
  - 22
    - Resizing a form by client height/width Hi, I just wonder if anyone can help me with this: I need to be able to resize a form by setting the size of its client area. Say, in Delphi i would do so: Form1.ClientHeight = 10; Form1.ClientWidth = 20; And the form will adjust its size so that client area will be as set. In .NET Form class there is a ClientRectangle property but it's read-only and trying to change any of it's properties causes a compile error: //----------------------------------------- Form1.cs(78): Cannot modify the return value of 'System.Windows.Forms.Control.ClientRectangle' because it is not a variable //----------------------------------------- Any ideas? Thank you, Andrey Tag: Simple Data Grid DataSource Problem Tag: 82100
  - 23
    - WindowEnumerator My application has regular document windows and floating windows above them. I want to iterate through all windows in z-order. I would have thought this capability would be built-in to the .net framework, but everything I can find on the archives says no - you need to use GetWindow(), thus: [DllImport("user32", EntryPoint="GetWindow")] private static extern int GetWindow(int hwnd, int wFlag); And the most logical thing seems to me to be to create a class that implements the IEnumerator interface. I suspect I need an additional external function - maybe GetTopWindow? to get a starting point; call that in .Reset() and GetWindow() in .MoveNext(). Am I on the right track? Can anyone provide examples of how to call these functions, eg what arguments to pass to them, how to coerce their result types into System.Windows.Forms, how to tell when I've reached the end? Thanks in advance. Peace, --Carl Tag: Simple Data Grid DataSource Problem Tag: 82096
  - 24
    - Updating a windows forms control from a thread I've gotten this question a couple of times in interviews and I don't know what they are looking for: How do you update a control's property, such as a textbox.text property, from a thread, in .NET? It seems to me you just update it normally. What are the interviewers looking for here? Thanks. - W Tag: Simple Data Grid DataSource Problem Tag: 82091
  - 25
    - Window Not Responding when running external programs I have a windows form application (C#) that launches multiple external batch files to do various installation tasks. I want to show some status on the win form, say simply update the text on a Lable control, "task 1 starting...", "Task 1 completed.", etc. However, the text for the label is not being updated/showed. I understand that the window is not responding to the Paint event anymore, How do I work around this? I see programs like InstallShield can do this, how did they do it? Tag: Simple Data Grid DataSource Problem Tag: 82088
- Next
  - 1
    - updating forms? my program draws a form and when you click the start button another form is drawn with a progress bar as it runs through a function. my issue is that when you click on another progrem then try to go back to the progress bar form it doesn't redraw itself. i tried using a: if(num%100==0) this.Update(); where num is just to count each time it runs through the loop. the program still works and finishes, but i can't seem to get the progress bar form to redraw itself. the this.Refresh() and Update() did not work either. any suggestions? btw...it's for an installer, so as it's uploading the database the progress bar goes, all of it works fine, just need the form to redraw itself if it loses focus. Tag: Simple Data Grid DataSource Problem Tag: 82086
  - 2
    - Corrupt resx with inherited forms Hi I have a bunch of corrupted resx files. My Cs files are okay. The code stil compiles and I can still show the forms. They still work, but I cannot edit them anymore. When I try to edit, the editor is convinced it are plain cs files and not forms. How can I recreate the whole design thing? VisStud 2003 kind regards Alexander Tag: Simple Data Grid DataSource Problem Tag: 82080
  - 3
    - Application Data Where do people put application data that is not user specific? For example, what if I have a xml file containing r/w data for a forms application, and the application may be used by users with limited rights. I cannot do any user management, and there is no reason to expose the user to the fact that these files even exist. Documents and Settings\All Users\Application Data\... is out because it is not available to restricted users. Application directory is out for the same reason. LOCAL_MACHINE hive in registry is out for the same reason. Confuzed Tag: Simple Data Grid DataSource Problem Tag: 82079
  - 4
    - How to draw image on form's title bar? Hi .. I wanted to repace form's default title bar with new One. So Can I draw Image on title bar. Pleae help Amar Tag: Simple Data Grid DataSource Problem Tag: 82075
  - 5
    - Validation problem I have a form that contains a TabControl. A tabpage on the control contains a TextBox that is bound to a field in a DataTable. The textbox is readonly. When the user clicks an Edit button, the field becomes editable. The user then has the choice of clicking the Cancel button, to discard any changes, or Update to finish the editing mode. Because the field cannot be NULL, when the user clicks Update the field should be validated. The textbox and the update button both have CausesValidation set to True, while the cancel button does not. For some reason however, the Validating event gets called when the user clicks the cancel button! Tag: Simple Data Grid DataSource Problem Tag: 82073
  - 6
    - Panel Hello, I have a panel on a form that holds a large number of controls. When I scroll the panel down and leave the form and then come back, the panel is still in the last position I left it. Is there a way to make the panel go back to the top position. I have tried the following with no success. Dim APoint as Point APoint = New Point(0, 0) frm1Main.Panel1.AutoScrollPosition = APoint Any Suggestions will be greatly appreciated, Chuck Tag: Simple Data Grid DataSource Problem Tag: 82072
  - 7
    - Question re Migration of VB6 App to .NET Our company develops and markets a client/server application which is written in VB6 as a rich Win32 Client/Server application. For a variety of technological reasons we are looking to migrate toward the .NET environment. However, a number of business factors make it impractical to accomplish this through an abrupt termination of the VB6 product and complete rewrite. Instead, we are looking to perform new development in .NET and slowly over time migrate existing code to .NET. At this time, we are looking to add a brand new module to our product. Obviously, the new module has some connection to the rest of the application in general. Be that as it may, it is sufficiently encapsulated unto itself that we are contemplating developing this new module in .NET. I'm interested in any advice which you can offer about how we might 'plug in' a module written in .NET into our VB6 application, specifically at the UI layer. We must provide the user with a seamless UI interface to our application, regardless of whether the user is interacting with a VB6 Form or with a .NET WinForm. Thanks very much for any advice which you can provide. - Joe Geretz - Tag: Simple Data Grid DataSource Problem Tag: 82071
  - 8
    - Huge Memory Usage Hello all, I am writing an application in C#, VB.NET which basicaly has a form with a few pictureBoxes on it and a TabControl with 3 tab pages - in each one a treeView and a ListView. In addition it loads a few other dll's as a reference which should not be memory consuming since each have a few simple classes. The thing is - this application can take up to 40,000KB of memory!!! Any idea where to start checking? How can I debug and see what part of my application is responsible for such memory usage? One more thing: I did some tests and noticed that even a simple form with nothing on it can take up to 15,000KB , am I doing something wrong??? Thanks, Haim. Tag: Simple Data Grid DataSource Problem Tag: 82069
  - 9
    - Problem with time in access HI In Access the date is like 21/12/2004 08:57:17 a.m. I need to update the record only if it was not created more than five minutes ago cmd = "UPDATE Sales SET Status = 'A' WHERE Mid(SalesDate,13,20) > #" & Mid(Microsoft.VisualBasic.DateAdd(DateInterval.Minute, -5, DateTime.Parse(DateTime.Now.ToShortTimeString, myFormat)), 13, 20) & "#" e.g When the time is 2:07:00 p.m. I can see the query goes to ADO like this "UPDATE Sales SET Status = 'B' WHERE Mid(SalesDate,13,20) > #2:02:00 p.m.#" but there is a syntax error, any idea thks Tag: Simple Data Grid DataSource Problem Tag: 82066
  - 10
    - Load event in user control Hi Gurus. I'm doing my first steps in the Winforms realm (I dealt mainly with ASP.NET until now), and I've stumbled across issue I really cannot solve and that seems extremely stupid to even ask about, so please forgive me... I need to execute some logic in the Load event of the control. Problem is - I can't find that event for user controls! This logic cannot be executed in the control's constructor, because its properties are not set yet. I don't want to modify the InitializeComponent method code, as I understand it is strongly un-recommened. In ASP.NET, there is a Load event for every control, which enables me to do just that. What is its equivalent in Winforms controls? Thanks! Tag: Simple Data Grid DataSource Problem Tag: 82062
  - 11
    - OnStartTask in UIP v 2.0 Hi, I'm using UIPAB v 2.0 in a Windows application. Following the UIP documentation I'm trying to "nest" two tasks. As I need to pass data between those two tasks, I;m using the OnStartTask method. This is what the documentation say about nesting tasks, using that method: "When the Add New Shipping Address process is ready to return, retrieve the TaskId for the Purchase Product process, which is stored in the current task's state, and invoke the OnStartTask method, passing the name of the navigator, the new address, and the original TaskId. If the task state for the specified task is found, the current view for that task is displayed." The problem is that the OnStartTask method requires an Itask implementation as its third argument and not plainly the TaskId. Should I implement the ITask just for the sake of resuming a suspended task? Thanks, Gwenda Tag: Simple Data Grid DataSource Problem Tag: 82061
  - 12
    - Adding Expand functionality to menus Hi, I'm trying to make an office-like expand menu, kind of like windows personalized menus. Right now, I've made my own custom menuItem, but the problem is when you click it, it will automatically close the menu interface. Is there a way to avoid this? Tag: Simple Data Grid DataSource Problem Tag: 82059
  - 13
    - set the listview highlight one line hello how can i set up the listview to high-light one line that is selected by mouse.now only the first column can be selectable. thank you. Tag: Simple Data Grid DataSource Problem Tag: 82055
  - 14
    - inherited forms Hi I seem to have a lot of problems with inherited forms in VS2003. Problem 1: Form1 has a txtEdit1. Form2 inheriteds from form1. But for some reason I would like to be able to access form1.txtEdit. When I put his modifier to protected instead of the default private. The control just disappears. IT IS GONE. (as in not longer their or very much away). Problem2: Form1 has a panel docked to the bottom, and a central panel docked to fill. Form2 needs a panel docked to top. For some sick reason this Form2.PanelTop always overlaps the central panel. It doesn't move the central panel down, making my first edit box INVISIBLE (as in not longer able to see it.) Anybody can confirm these issues? Please tell me that I'm doing something wrong here. Otherwise I have to assume that form inheritence doesn't work in C# VS2003. Kind regards Alexander Tag: Simple Data Grid DataSource Problem Tag: 82053
  - 15
    - Animated GIF Hi All, I want to show animated GIF on form. I used ImageAnimator class to Animate and StopAnimate method to stop the animation. But my client says that if he stops the animation in between then it should not stop at that postion, but it should complete its remaining rotation and then stop. e.g. if image starts rotating from its default postion and it goes till half cycle, at that moment if user stops it then it should complete the remaining half rotation and then stop. I am developing windows application using C#. Can anybody guide me regarding this problem. TIA Jaydeep Tag: Simple Data Grid DataSource Problem Tag: 82052
  - 16
    - Pass Values from .NET Windows App to Open IE Form I need to pass several values from a .NET Windows app into an EXISTING, OPEN IE form. I found the following code snipped for VB6 elsewhere on the forums--it's close: Dim IE As Object Set IE = CreateObject("InternetExplorer.Application") IE.Visible = True IE.navigate "http://www.kbb.com" Do Until IE.readyState = 4 DoEvents Loop IE.Document.emailsignup.email.Value = "MYEMAIL" But... * I need to do with a .NET Windows app, not VB6 * The IE window will already be open (the user must sign on and display it first--code cann't do that) * Once items on the IE form have been filled, the IE Window needs to be brought in focus so the user can fill in other form elements before submitting. Ideas? THANKS! Tag: Simple Data Grid DataSource Problem Tag: 82050
  - 17
    - Help on design decision with Tree structure data I have some data organized in a tree structure saved in an XML file and I want to display it in a TreeView control (the XtraTreeview of DevExpress). Each data item I would like to store in a class so that I can attach to it some logic (for example to each data is associated an Execute method). I wonder what is the best solution: subclass the TreeView Node and extend it adding all the logic I need or create a completely detached tree structure that contains my data and then link it somehow to the TreeNode component (probably this way is nicer since I don't match and mix business logic with the interface). One thing to notice is that the data will change (the user can modify it) so I'll have to take care of updating the data structure. Thanks a lot for any suggestion. Andrea Tag: Simple Data Grid DataSource Problem Tag: 82048
  - 18
    - Docking Toolbars In Windows Forms I have a main Toolbar and I also have a control that contains a toolbar. Is there a way of docking the control's toolbar besides the main toolbar? Or just docking the control's toolbar in the main Window's form (not just docking it within the control but outside of it in the main form)? Thanks in advance, Tom. Tag: Simple Data Grid DataSource Problem Tag: 82047
  - 19
    - datagrid wrapped textbox column Hi, I have a database table with long text fields. I use datagrid to display the data. For long text fields I build custom column which inherits from DataGridTextBoxColumn so I can wrap text in the datagrid cell. Custom TextBoxColumn is able to determine the column height. I overrided GetMinimumHeight and Paint methods. To edit row data I launch dialog window. My problem is : when I finished with dialog window text fields will be changed and I want datagrid/my custom column recalculate the height. But datagrid doesn't ask my custom column to do this (call GetMinimumHeight on custom column). Unless I manually resort datagrid - click on column header. Is there any solution to force datagrid to call GetMinimumHeight in custom column Thanks, Rynad Tag: Simple Data Grid DataSource Problem Tag: 82045
  - 20
    - Improving Performance I have a table called tblOrg in a SQL Server 2000 database. It has PK = Org_ID and a field called ParentOrg_ID so an Organization can have 0, 1 or many children but only one parent. I have a recursive function that builds a tree view of this and populates a tree control with Org_ID as the key and OrgName as the Text. Everything works great and performance is great as long as the data base and the application are on the same machine. But performance is unacceptable on a remote machine connected via a LAN. This is to be expected because the application is using sqlcommands to build the tree in the recursive function. Thus, the same sqlcommand is executed once for each organization. Obviously to get the most update version of the data you have build it from the database. But what other ways are there, that once built, one can reuse it rather that rebuild the tree? For example, the user selects OrgType from a dropdown (College, High School, Middle School) which populates the tree control with organization of that type, he then can select the Organization and populate the form with the details of the selected organization. When changing the OrgType, the control is completely rebuilt via the recurisive function which goes to the database. Instead, it would be nice to persist the previously clicked OrgTypes in memory so that the tree control is populated from memory if that OrgType is reselected. Since this tree control is used in other places in the application, it might be better to populate a dataset in memory so that all projects within the application can reference and populate the tree control that way or, better yet, all instances of the application can use it. For example, a user A opens his application which causes the Tree to be built. But user B opens his application but the application has access to the already populated tree because of User Aâ??s work (This organization structure does not change often). How can I do this? Any VB or C# code examples would be nice? WR Tag: Simple Data Grid DataSource Problem Tag: 82044
  - 21
    - IPC Hi, Is there a simple way of getting the text of a TextBox from one application, to another, on the same machine ? Tag: Simple Data Grid DataSource Problem Tag: 82043
  - 22
    - Merging Toolbars Hi, I have my main Windows Forms Application and a control that contains a context menu and a toolbar. Now I was able to merge the control's context menu with the application's main menu no problem by using the MergeMenu functions. I cannot find anything similar for merging toolbars. Is there a way for merging toolbars so that the control's buttons will be incorporated into the main application's toolbar and yet their functionality will be accessed from the control (just like when the menus are merged)? Thanks for your help in advance, Tom. Tag: Simple Data Grid DataSource Problem Tag: 82040
  - 23
    - How to generate Dynamic UI (similar to an HTML page) in wondows application Hi, I am developing an application which is similar to any pricing application (such as on Dell site where you customize your computer and get the price). The difference is -its not web application. Its Windows application. How can I dynamically generate UI Page from Database settings. The options will be radio controls or check boxes - enabled or not enabled - etc. The text associated with control may vary. Based on number of controls - it may vary the If some body have data model for this pricing application - could you please post it. Mallikarjun Tag: Simple Data Grid DataSource Problem Tag: 82039
  - 24
    - Xp style Title Bar Hi I wanted to replace my form title bar with xp style looking title bar. I am desgning applocation which will run on window 2000. Please help me how should i do that.. thanx.. Tag: Simple Data Grid DataSource Problem Tag: 82038
  - 25
    - Hide TabPages Hi I have made a custom TabControl and a Custom TabPage to go with it. The custom TabControl has a collection of custom Tabpages, which shows in the property editor. What I need to do now, is to hide the TabPages property inherited from TabControl. I whant the developer to only use my collection. Is this possible? TIA spif2001 Tag: Simple Data Grid DataSource Problem Tag: 82036

I want to use a data grid in a MFC Project.
After adding the grid to an empty dialog, I did not find a way to connect to
a data source: The DataSource textbox stays empy (I added all kind of
Connections and Commands). The help systems says that ADO is to use, but if
found only Microsoft ADO Data Control 6.0 (SP6.0) (OLEDB) and if I add this
to the dialog I get: "File or assembly name AxInterop.MSadodclib.dll or
dependency was not found".
What can I do?

Top