Controls Subclassing in .NET

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  - 1
    - Counting Connected Event Handlers I have a customer control that inherits from System.Windows.Forms.Control. Its not the worlds most complicated control but I have a problem. I'm trying to get a count of the number of events connected to base.click. Is this possible Thank Al Tag: Controls Subclassing in .NET Tag: 66408
  - 2
    - MDI App Timeout I have an MDI app that I need to timeout after a certain amount of time, say 30 minutes. I am looking for a way to make sure that if the user selects a childform or types something in the childform or selects a menu item or even just clicks on something in the app it will not timeout. But if the user minimizes the app and does nothing with it for the preset time or just walks away from their PC for that longer than the preset time that the app will give them a warning that the application is closing. So far I have looked at trying to do mouse clicks and keyboard presses but I can't seem to figure out how to do it without having to write something in every childwindow. I have also looked at Application.Idle but it seems that if something else is going on on the machine like I am working with another application the Applicaiton never seems to go idle until all typeing and mouse clicks have stopped all together. Has anyone come up with a way to do something like this? The timer part is easy of course my biggest issue is how to catch all mouse clicks within the parent form as well as keystrokes but ignore everything outside the app. TIA -Stanley Tag: Controls Subclassing in .NET Tag: 66402
  - 3
    - C# windows app Keyboard hook SetWindowsHook Hi I have to prevent user pressing Alt, Ctrl, Shift and Windows+M key combinations when the windows form created by the application is active. The main thread runs in background and the entire application is like a Wizard where user keeps on pressing Ok / Cancel and the next form is opened after closing the previous one I have to prevent user from pressing all special keys, user should not be able to minimise the app etc How do I do that I tried SetWindowHookEx(...) but that did not work Also in WinUser.h has #define WH_KEYBOARD 2 an #define WH_KEYBOARD_LL 1 The Hook can be created using WH_KEYBOARD but not WH_KEYBOARD_LL The hook created using WH_KEYBOARD does not work. Can some one help me in providing a small snippent of code Thanks in advance Tag: Controls Subclassing in .NET Tag: 66400
  - 4
    - Localized form name Hello All I want a form name to be changed depending upon the cultureInfo. Whenever one creates a form, its corresponding Form1.resx file is created. I created a file named Form1.fr-FR.resx, and added the string resource for form name. The application compiles fine, but even if I change the Thread.CurrentThread.CulturInfo property to fr-FR, the string is not taken from the new file. Is anything I'm missing Thanx Mahesh. Tag: Controls Subclassing in .NET Tag: 66398
  - 5
    - Localized form name Hello All I want a form name to be changed depending upon the cultureInfo. Whenever one creates a form, its corresponding Form1.resx file is created. I created a file named Form1.fr-FR.resx, and added the string resource for form name. The application compiles fine, but even if I change the Thread.CurrentThread.CulturInfo property to fr-FR, the string is not taken from the new file. Is anything I'm missing Thanx Mahesh. Tag: Controls Subclassing in .NET Tag: 66397
  - 6
    - Inherit TextBoxBase How do I inherit from TextBoxBase? It does not have a public,protected or friend constructor and yet Microsoft appear to be able to use inherit in the TextBox and RichTextBox. The TextBox IL displayed in ILDASM shows a TextBoxBase::.ctor. Tag: Controls Subclassing in .NET Tag: 66396
  - 7
    - When does the AutoScrollPosition value change? Hello! I have a panel with AutoScroll enabled. After Scrolling I read out the X and Y values from AutoScrollPosition but they are still 0. How come? I need to find out the position of the scrollbars so that I can correct the X and Y values I use in the MouseUp event to show a popup menu at the correction position. Thank you for helping. /David. Tag: Controls Subclassing in .NET Tag: 66395
  - 8
    - default directory c:\winnt\system32? Hello, I have a very simple C# WindowsForms app accessing a file. Framework 1.0 SP2. The filename is used without any path reference. On 99% of machines I tested, the file is correctly located in the applications startup directory. On one machine however, it looks for the file in c:\winnt\system32. I can of course reference the path by using Application.StartupPath, but I would like to know what is causing this, since the one machine is a production server... Any clues? Hans Tag: Controls Subclassing in .NET Tag: 66394
  - 9
    - UI testing Yo!: can anyone advice me about following topics (or to give me some links about them 1.How to test UI ? - i mean some unit tests for the applications U 2.Is there some tools for automated testing of applications UI 3.What kind of unit tests can be performed at all thanks in advance : Tag: Controls Subclassing in .NET Tag: 66393
  - 10
    - Datagrid.color Hi, Good Day! I've a 2 datagrid in my windows form. The 2nd datagrid will update the 1st datagrid. I'd like to set the color of the datagrid to light blue only if the records is updated during runtime. Can someone help? Thanks in advanced. rgds, Phoebe. Tag: Controls Subclassing in .NET Tag: 66385
  - 11
    - Anchor/dock property I have a forms application which has many controls such as buttons,labels,listviews,text boxes etc. If you set the window size to maximum size so that it would expand to the size of the screen the controls tend to move without any proposion. So then I used anchor and the dock property. I could get some or most of them to appear correctly, but say you have to list boxes in the middle of the screen one after the other vertically how could you use anchor or dock property. Tag: Controls Subclassing in .NET Tag: 66384
  - 12
    - Serializing/DeSerializing System.Windows.Forms.Cusrsor object looses the hotspot Hi All, We are trying to Serialize a System.Windows.Forms.Cursor object and Deserialize it. Before serializing the cursor behaves correctly but when we serialize and use a deserialized object, the hotspot (the cursor pointer) is not where it is expected to be. We tried both binary and soap formatters. TIA Sankar Nemani Tag: Controls Subclassing in .NET Tag: 66381
  - 13
    - Can I "Invoke" a Property? I know how to 'invoke' a method......but now... I have a control that has a property "Selected" I would like to change it from different thread... how can I invoke it? thx Tag: Controls Subclassing in .NET Tag: 66378
  - 14
    - Designtime turns to Runtime when copy-pasted... This is a really bad behavior of the design time, but I am not sure if it can be avoided in some way. Basically: I created a custom LicenseProvider that checks the context for the UsageMode (DesignTime or Runtime). Depending on that it uses a design time algorithm or a runtime one to get the license. However, if you select a control and then use copy + paste (either by keyboard or context menu) the pasted control has the context set to Runtime... This is really bad... Here's how to replicate: create a user control and a LicenseProvider. In the license provider's GetLicense method put a message box to display the context.UsageMode. Add the control to the toolbar, drag and drop it on the design surface. Then select it and press Ctrl+c and then Ctrl+v. You will see that the second control will show "Runtime"... Unfortunately I didn't find a way yet to go around this... Perhaps someone has an idea thanks iulia Tag: Controls Subclassing in .NET Tag: 66377
  - 15
    - Rich TextBox Text input I am trying to read text input from a rich text box control. For example if there are 10 rows of text in the text box and the user moves the cursor(or caret,by the way there is no mouse interaction)to a certain row and then say press Key "A" the text on that row should be extracted. Anybody know how to do this. Thanks in advance Tag: Controls Subclassing in .NET Tag: 66373
  - 16
    - custom design UI I am currently working on an application where we decided to have a customized look and feel (as opposed to the standard Windows UI). I took an approach using graphics to define windows borders and buttons, etc... but I'm not satisfied at all with the performance. Windows take a long time to display making this interface less than friendly. The graphics for the windows borders are placed on the form using PictureBox controls. Graphics are GIFs ranging from 1K to 5K with 90% of graphics between 1k and 2K. Am I taking the wrong approach? What would be a better way to go about this? Thanks a lot for your input Ben Tag: Controls Subclassing in .NET Tag: 66370
  - 17
    - How do I force an autotab to the next textbox I have textboxes with unambigous field-lengts, such as single character. When a valid value is entered into one of these, I would like to autotab to the next textbox. What is the best way to do this? Tag: Controls Subclassing in .NET Tag: 66369
  - 18
    - How do I set focus on a specified textbox at load? I am attempting to set the focus on a calculated textbox during the forms Load event, however it seems to want to go to the default location instead. Is there some way I can do this in a way that gurantees it will go where I want it to go when the form is made visible? Tag: Controls Subclassing in .NET Tag: 66368
  - 19
    - Possibly strange behavior with ToolTip. I have a .NET application that seems to have a really strange bug. The following code represents a form that adds a control (in this case, a label) to a form every few seconds. The code is similar to the application I'm working on. As my application receives data, it will add or remove user controls which represents the data on the fly When I create the control I set its tool tip. When the control is added to the form, the form takes focus on the screen. This is a really annoying feature as I don't want the user to work with another application and have my application pop up in the foreground every time my application receives new data. The really strange part is that this behavior goes away when I remove the code to set the control's tool tip. Does anyone have any ideas why this is happening using System using System.Drawing using System.Collections using System.ComponentModel using System.Windows.Forms using System.Data namespace WindowsApplication /// <summary /// Summary description for Form1 /// </summary public class Form1 : System.Windows.Forms.For private Timer timer private int yOffset = 0 private int i = 1 private System.Windows.Forms.ToolTip toolTip1 private System.ComponentModel.IContainer components /// <summary /// Constructo /// </summary public Form1( InitializeComponent() StartTimer() /// <summary /// Clean up any resources being used /// </summary protected override void Dispose( bool disposing if( disposing if (components != null) components.Dispose() base.Dispose( disposing ) #region Windows Form Designer generated cod /// <summary /// Required method for Designer support - do not modif /// the contents of this method with the code editor /// </summary private void InitializeComponent( this.components = new System.ComponentModel.Container() this.toolTip1 = new System.Windows.Forms.ToolTip(this.components) // // Form // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13) this.ClientSize = new System.Drawing.Size(292, 273) this.Name = "Form1" this.Text = "Form1" #endregio /// <summary /// Start the timer to dynamically add components /// </summary private void StartTimer( timer = new Timer() timer.Interval = 5000 timer.Tick += new EventHandler(OnTick) timer.Start() /// <summary /// Called each time the timer's interval has passed /// </summary /// <param name="sender"></param /// <param name="args"></param private void OnTick(object sender, EventArgs args SuspendLayout() Label label = new Label() label.Text = "Label" + i label.Size = new Size(200, 15) label.Location = new Point(0, yOffset) Controls.Add(label) toolTip1.SetToolTip(label, "Label" + i) ResumeLayout() yOffset += label.Height i++ /// <summary /// The main entry point for the application /// </summary [STAThread static void Main() Application.Run(new Form1()) } Tag: Controls Subclassing in .NET Tag: 66366
  - 20
    - TreeView display refresh. Hello I have a tree view control on a form with some nodes in it. When I add/remove/change nodes, the tree disappears and then repaints. I have used the BeginUpdate and EndUpdate methods, but this makes no difference. Is there any way I can stop the application from clearing the treeview from the screen before repainting it Cheers. Tag: Controls Subclassing in .NET Tag: 66365
  - 21
    - How can my application determine when the system is shutting down? I am currently developing a taskbar-icon based program which normally has no open windows. I understand that there is a Microsoft.Win32 event that is supposed to notify the application, but this event fails to fire when the computer is shut down. I have Windows XP. By not knowing when the computer is shutting down, my application stays in memeory when the computer tries to shut down, so all proccesess except the app close. To avoid this, you must manually close the program before shutting down the computer. I hope that I can find a way to make my program more user-friendly in this respect. I would apprectate any information on this subject. Tag: Controls Subclassing in .NET Tag: 66364
  - 22
    - Applicaiton Timeout I am looking for a way to see if the user has done anything within my app for about 30 ins. I figure I could probably add a hander for the mouse clicks and for the keystrokes but I am not sure this is the best idea. Is there a better way? Also how would I capture all keyboard and mouse clicks? -Stanley Tag: Controls Subclassing in .NET Tag: 66361
  - 23
    - SQL queries on Dataset in memory Is there an easy way to run SQL queries on a dataset that's in memory. I've loaded up data from an XML text file, and would like to run some update queries on the tables that are created in the dataset, and then write them back out as XML Anyone know if this is possible without writing the data back out to a database table in Access or some other db format Thanks, Tag: Controls Subclassing in .NET Tag: 66360
  - 24
    - Hide / alter columns Datagrid (Web Service & Dataset) I'v seen others asking how to do this. This is how I got it done ' call Web Service for Datase Dim DataSetName As DataSet = SearchDeal(par1, par2 'test that you have a dataset with value Dim strTest As String = DataSetName.GetXm If Not (strTest = "<NewDataSet />") The 'create tablestyl Dim tableStyle As New DataGridTableStyle( ' set to table dataset nam tableStyle.MappingName = "TabelName 'get element count from datase Dim numCols As Intege numCols = DataSetName.Tables("TableName").Columns.Coun Dim i As Integer = ' loop thru dataset to create column Do While (i < numCols Dim myDataCol As New DataGridTextBoxColumn( myDataCol.HeaderText = DataSetName.Tables("TableName").Columns(i).ColumnNam myDataCol.MappingName = DataSetName.Tables("TableName").Columns(i).ColumnNam tableStyle.GridColumnStyles.Add(myDataCol i = i + Loo 'set Header background color and font colo tableStyle.HeaderBackColor = System.Drawing.Color.MidnightBlu tableStyle.HeaderForeColor = System.Drawing.Color.WhiteSmok ' for colums you wish to hide, set width value to 0 or - tableStyle.GridColumnStyles(44).Width = "0 tableStyle.GridColumnStyles(45).Width = "0 DataGrid1.TableStyles.Clear( DataGrid1.TableStyles.Add(tableStyle 'bind dataset to Gri DataGrid1.DataSource = DataSetName.Tables("TableName" End If Tag: Controls Subclassing in .NET Tag: 66352
  - 25
    - Single Instance of App Per User I have been asked to make sure that a WinForm app can only have one instance and this would not be an issue if that was the only part. I could simply loop through the processes and see if the process name is already in the collection. However, the second part of the request was to make sure that if someone is running the app and someone else does the quick login or uses Terminal Services that they be able to run the app under their network ID. So I need to find a way to look at processes under a particular user or to compare the processes users. Anyone know how this could be done? TIA -Stanley Tag: Controls Subclassing in .NET Tag: 66348
- Next
  - 1
    - Changed dataset values mystery This, to me, screams 'Bug!!!!', but before I get into support calls to Microsoft type stuff, does anyone have any suggestions about how the following can happen.... VS 2003 using VB.Net. I have a Windows form that is used for displaying data from a dataview. The dataview sorts a dataset, and also filters it so that only records relating to the current user get shown. In the particular situation where I know I can recreate my problem, the dataview contains 4 records. There is a field called Nominee. For the record with the reference AG 11 (i.e. the key field), the nominee is NMS. So... DealDS1.Tables("Main").Rows.Find("AG 11").Item("Nominee")="NMS" I now want to import data into the dataset (...fields are set so that the data will also fall into the dataview as well....). I read the first line of data from a spreadsheet, add a new row onto DealDS1.Tables("Main"), set the values of the fields, and then add the datarow onto the dataset. Fine. No problem (normally). Again going back to the spreadsheet that I know makes it go wrong, this works up until the 6th row. Then this happens.... Read the 6th row of the spreadsheet. Add a new row onto the dataset.... newrow = DealDS1.Tables("Main").NewRow Set the values of the fields. newrow.Item("Blah")="Whatever" for various fields Stepping through this code I now look at the value of DealDS1.Tables("Main").Rows.Find("AG 11").Item("Nominee") and it's NMS Next line of code adds the row onto the dataset.... DealDS1.Tables("Main").Rows.Add(newrow) (the new row as a key value of AG 26) And after that line DealDS1.Tables("Main").Rows.Find("AG 11").Item("Nominee") is now NMA I have no code that I can see that is getting triggered by adding the new row. So that just can't possibly happen. Can it? Tag: Controls Subclassing in .NET Tag: 66346
  - 2
    - Cut, Copy, & Paste Menu Does anyone have a link where I can get code for the cut, copy, and paste menu of a MDI application? Or the basic features of most Edit menus? Thanks, Greg Tag: Controls Subclassing in .NET Tag: 66345
  - 3
    - How to determine single click vs. double click? I have a windows forms application that needs to do one thing for a single click and another thing for a double click event. However, the forms click event gets fired whenever a double click event occurs and I don't want to perform the single click event plus the double click whenever the user double clicks on the form. What is the best (standard) way to handle this? IMHO it seems like there should be three Click events for a form: Click - Gets fired on first mouse down mouse up MouseDown Click MouseUp SingleClick - Gets fired after click if no double click MouseDown Click MouseUp SingleClick DoubleClick - Gets fired after second mouse down mouse up MouseDown Click MouseUp MouseDown DoubleClick MouseUp Am I missing something? Thanks. Gregg Walker Tag: Controls Subclassing in .NET Tag: 66344
  - 4
    - Setting the length of datagrid columns I am binding a datatable to a datagrid in VB.NET I then want to change the width of the first column. I am unable to get the right syntax. Here is the code I tried Dim mydataset As DataSet gclodatabase.GetDataSetJobs("Select * from qryJobs", mydataset) Dim Mydatatable As DataTable = mydataset.Tables(0) dtgSelect.DataSource = mydataset.Tables(0) dtgSelect.TableStyles(0).GridColumnStyles("JobId").Width = 10 ? this fails with an error An unhandled exception of type 'System.NullReferenceException' occurred in Proposals.exe ?Additional information: Object reference not set to an instance of an ?object. dtgSelect.TableStyles(0).GridColumnStyles(1).Width = 10 ? this fails with error ?An unhandled exception of type 'System.ArgumentOutOfRangeException' ?occurred in mscorlib.dll ?Additional information: Index was out of range. Must be non-negative ?and less than the size of the collection. dtgSelect.Refresh() Tag: Controls Subclassing in .NET Tag: 66342
  - 5
    - How to add new line to TextBox How do i add a new line to the TextBox (Multiline=true) With out making a copy of the whole array. Thanks. George. Tag: Controls Subclassing in .NET Tag: 66340
  - 6
    - Toolbar dropdown button problem My vb.net form was using a toolbar control with no problems. I needed to modify the toolbar to add a dropdown button showing a menu. After that, the images of my toolbar won't appear at runtime, though they appear at design time. I am not using XP styles and also tried to edit the automatic generated code to make the imagelist control to be the first to load. The problem remains. Can anyone help me with this problem? Thank you. Julian Tag: Controls Subclassing in .NET Tag: 66337
  - 7
    - Gui-framework Which gui Frameworks do exist for .net c#? Myself just found SharpLibrary Version 1.37 http://24.199.8.122/ Maybe people who know other frameworks could reply ? thx Dulo Tag: Controls Subclassing in .NET Tag: 66335
  - 8
    - Question about DataTable and DataGrid Hi, - I have created a table that has 4 columns (type System.String) - called myDataTable. The table is created during the Form_Load function. - I have created a DataGrid, called dataGrid1. Now, to my problem: Each time my user clicks on the "search" button, a search is performed, the table is cleared with myDataTable.clear() and filled with the new data. Then I want to bind the DataGrid to the table, using dataGrid1.DataSource = myDataTable -- which contains the new results each time. But - I am getting an exception. Since I have tried to debug this, I am almost positive that the problem is related to the binding. Can someone offer help? or shed some light on how to bind the Grid to a table? Actually I would love to know if there is a way to fill the DataGrid control without messing around with tables or datasets... BTW - I am using C# Thanks Tag: Controls Subclassing in .NET Tag: 66329
  - 9
    - Textbox.OnValidating event does not trigger Hello, Here is the problem, My code exits out of the TextBox.OnValidating event cleanly because the user has clicked on a menu that allows the user to load another screen, when that screen is unloaded and the cursor is back on the TextBox, I am able to tab off the textbox without it running my OnValidating event again, how do I get .Net to force the validating event to be triggered as soon as I tab off in ALL cases. Please note the CauseValidated property is set to the default value of true so I know that it should be triggering in all cases but it does not in this case. Please help, Tag: Controls Subclassing in .NET Tag: 66326
  - 10
    - Can I create another form in another thread? hi, everybody I want to create another form in another thread. But if I do this, the form will be created and closed immediately Can I create another form in another thread The purpose I want to do is that before the application is started, I want to display a starting form. So I create the starting form in another thread in the form() handler. Or can I use another method to achieve this thanks Tag: Controls Subclassing in .NET Tag: 66325
  - 11
    - IIS ports I have a winform control that works when called from a html page when IIS is running on port 80 but if i change the port(which i need to do) then it never is displayed ? anyone seen this ? do i have to alter any .net config files or anything ??? Tag: Controls Subclassing in .NET Tag: 66324
  - 12
    - Update current row in Datagrid Hello! When running dataadapter.update current row in my datagrid is not updated. I want the current row to be updated without having to move to another row in my datagrid. Any ideas? Regards Magnus Tag: Controls Subclassing in .NET Tag: 66318
  - 13
    - PeekMessage(), GetMessage() Hello All Is there an alternative of Win32 API's PeekMessage() and GetMessage() functions in .NET What I want is to peek in the message queue for a message and if it is some specific message, I need to discard it from being dispatched to the form Can this be achieved in .NET? I couldn't find any method in System.Windows.Forms.Form class Thanx in Advance Mahesh. Tag: Controls Subclassing in .NET Tag: 66317
  - 14
    - Set source of Datagrid with query Hi Does anyone know how to set the source of a dtatagrid by means of a query and that the datagrid only shows the columns from the query. I have some code like this Me.OleDbSelectCommand1.CommandText = "SELECT X, Y " & "FROM TABLE " & "WHERE TABLE.[X] = 2 Me.OleDbSelectCommand1.Connection = Me.OleDbConnection Me.Dataset1.Clear( Me.OleDbDataAdapter1.Fill(Dataset1 Me.DataGrid1.SetDataBinding(Dataset, "TABLE" Now the problem is that the datagrid shows all columns of TABLE instead of just the columns X and Y. I'm getting the columns of the complete table. Is it possible to show only the columns X,Y Thanx.... Tag: Controls Subclassing in .NET Tag: 66314
  - 15
    - Tooltips on a PropertyValueUIItem I've successfully enabled PropertyValueUIItem use on a PropertyGrid by making a Container that implements IPropertyValueUIService, and then adding the PropertyGrid to it. As a result, you get nice tiny icons that sit on the property name, and you can double-click on them to invoke a handler. However, the MSDN documentation seems to think you can also associate a tooltip with the PropertyValueUIItem. I've done so, but no tooltip comes up. I've plowed through ILDASM on several .NET DLL's and don't see any fetching of the ToolTip property -- so question is: is this actually implemented? And if not, is there a suitable workaround? (Say like 10 lines of code that will automagically re-enable tooltips in property grids...) Cheers, Glen Low, Pixelglow Software www.pixelglow.com Tag: Controls Subclassing in .NET Tag: 66313
  - 16
    - Use ComboBox to create a function which like the "find in files" of VS .Net hi, everybody I want to use ComboBox to create a function which like the "find in files" of VS .Net. The problem I meet is that when the user select a item of the ComboBox the selected item will become the first item. I want to do this in the SelectedIndexChanged handler. But when the selected item is moved to the first item the SelectedIndexChanged event will be fired. And it will become recursive fired. Is there any method to avoid this? Or is there other event I can fire in thanks Tag: Controls Subclassing in .NET Tag: 66310
  - 17
    - DataGrid's CurrentRowIndex doesn't show new row's index. I've got a strongly typed dataset with three tables. Call them parent, child, and grandchild. There are relationships between parent and child, and between child and grandchild, using fields parentId and childId respectively. parentId and childId are autoincrement, with seed = 0 and step = -1. On a form I've got a DataGrid (with the most important fields) and some textboxes (with more details) at each level. That is: dgParent.DataSource = ds dgParent.DataMember = Parent dgChild.DataSource = ds dgChild.DataMember = Parent.Parent_Child dgGrandchild.DataSource = ds dgGrandchild.DataMember = Parent.Parent_Child.Child_Grandchild txtParentDetail.DataBindings.Add(New Binding("Text", ds, _ "Parent.ParentDetail")) txtChildDetail.DataBindings.Add(New Binding("Text", ds, _ "Parent.Parent_Child.ChildDetail")) txtGrandchildDetail.DataBindings.Add(New Binding("Text", ds, _ "Parent.Parent_Child.Child_Grandchild.GrandchildDetail")) Viewing data from the database, everything is cool. I can change existing data and update it fine. I can create new grandchildren. The problem arises when I click in the last (empty) row of the Child DataGrid, wanting to create a new Child of the current parent. I enter some data, tab to the next field, and the data I entered vanishes. Furthermore, the Child-level textboxes continue to display the data of the last Child record I was looking at (before I clicked into the last row of the Child DataSet). I expected them become blank, showing that data has not yet been entered for the new Child row. Thinking perhaps the Child DataGrid and Child textboxes had somehow got different CurrencyManagers. I took a look at this: BindingContext(dgChild.DataSource, dgChild.DataMember) Is _ txtChildDetail.DataBindings("Text").BindingManagerBase. But it was true, which I think is as it should be. Then I put some code into the dgChild's CurrentCellChanged event, to display the DataGrid's current row and the CurrencyManager's position in the status bar. MyStatBarPanel.Text = "DG: " & dgTktGrp.CurrentRowIndex.ToString & _ " CM: " & BindingContext(dgTktGrp.DataSource, _ dgTktGrp.DataMember).Position.ToString What I found here was that the DataGrid's CurrentRowIndex and the CurrencyManager's Position were always the same as each other, which is good. BUT, neither of them changed when I clicked into the last (empty) row of the DataGrid. Which doesn't seem right, does it? If anyone can explain either (a) what I might be doing wrong to cause this oddness or (b) why this behavior is perfectly natural and what is the proper way to add new records at the Child level, I will be very grateful. Thomas Berg Tag: Controls Subclassing in .NET Tag: 66309
  - 18
    - Error '33' in the paint routine... This is one of those weird errors that probably nobody knows of, but I will try anyway, maybe somebody knows... I designed a datepicker as a drop-down control. When the control drops the floating form calendar is displayed. One can press the year and a numeric up-down appears where you can change the year. All controls are inherited and I override the WndProc and handle all mouse message so that no one of the controls gets focus, in this way the main form never looses focus when the control is dropped-down. All is fine except for the following situation: when the application starts the control is not focused. The control is then either clicked or tabbed to. If you click the year the numeric up down appears. Here is what happens: one of the buttons of the numeric up down generates an error in the WndProc on the WM_PAINT message. The error is the windows error #33: ERROR_LOCK_VIOLATION. What is extremely weird is: both buttons (up and down) are of the same exact type and they both created and dealt with in the same manner. Still only one has this strange behavior. Also, if one presses the tab key a few times and the focus goes away from the control and then returns to it... no error occurs... What can be the problem?? The floating form is a form with a custom control on it who owns the numeric up-down. The form is shown using the SetWindowPos api... If anybody has any idea, or suggestions? thank you, iulian Tag: Controls Subclassing in .NET Tag: 66308
  - 19
    - How to sort DataGrid using code? I guess I could change the SELECT statement to ORDER BY, but that won't show the little sort arrow on the DataGrid's column header. What is the code to sort a Windows' DataGrid column? Simulate a user clicking on a particular column header. In my case, I want to sort by "Last Name" by default. Thanks in advance. Tag: Controls Subclassing in .NET Tag: 66306
  - 20
    - Version resource for C# Hi, Is there a way to add a traditional C++ style version resource to a C# Windows forms-based application? The version resource is what gets displayed on the Version tab when you bring up the property sheet for the .exe or .dll file in Windows Explorer. In the documentation I see a version resource editor for C++, but it looks like resources for C# and managed C++ are done differently. I do not need to read this resource from inside the code, it is just that this is our first .NET-based product and we have an internal standard that all released products need to have correct version information in all modules. This is so tech support can have the customer bring up property sheets in Explorer to figure out exactly which versions of everything the customer is running. Thanks for your help. -Vance Gloster Tag: Controls Subclassing in .NET Tag: 66305
  - 21
    - How to make all buttons in toolbar the same size? Hi, I'm having some trouble making all the buttons in the toolbar the same size. My toolbar property TextAlign is set to "Underneath" and all the icons in my ImageList have a width of 48 but the actual buttons' size varies from 48 to around 60 depending on the corresponding text. What I would like is to have all buttons in my toolbar have a width of 64. I tryed changing the ButtonSize property but it didn't help. Thanks in advance for any help. Luis Tag: Controls Subclassing in .NET Tag: 66302
  - 22
    - InitializeComponent question Hi. What is the exact purpose of <System.Diagnostics.DebuggerStepThrough()> in the InitializeComponent routine? If I delete this attribute the form continues to run without problems and I can step into it. Regards, Chris Leffer *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Controls Subclassing in .NET Tag: 66299
  - 23
    - Hosting winform Controls question. Hey all, I have created a tiny web page to host my winformcontrol. When running this by default on IIS port 80 it works fine however I want to run IIS on port 90 and it doesnt seem to work correctly. I changed the IIS port the webserver listens to, and also changed the html so the port is included in the CLASSID part of the object tag but my browser does not render the control correctly. It seems to be able to locate the control as I dont get the usual little graphic in the top left corner which indicates broken link but an empty box with a disabled scrollbar. Anybody seen this before ? Is there some other confiuration change i have to make ? Tag: Controls Subclassing in .NET Tag: 66298
  - 24
    - Controls not refreshed using object databinding Hi I have a simple object Person with two properties ForeName, SurName The object is initialised in the form constructor and its properties are bound to two text box controls. This works fine. However if I change one of the object properties the text box controls arenâ??t updated with the new values Many thank Exmaple private Person _currentPerson public frmEmployees( // Required by VS.NE InitializeComponent() // Init _currentPerson objec _currentPerson = new Person() _currentPerson.ForeName = "Fred" _currentPerson.SurName = "Flintstone" private void frmEmployees_Load(object sender, System.EventArgs e // Databind form to current person objec txtForeName.DataBindings.Add("Text", _currentPerson, "ForeName") txtSurName.DataBindings.Add("Text", _currentPerson, "SurName") private void butChangeName_Click(object sender, System.EventArgs e _currentPerson.ForeName = "Pink" _currentPerson.SurName = "Panther" } Tag: Controls Subclassing in .NET Tag: 66293
  - 25
    - List tables and columns in designer I have a control that I am working on that interacts with a DataSet to display data. I want to be able to use the designer with this control in the same way as with the DataGrid control, where once a DataSet is associated with the control, I can then select tables and columns from the DataSet for displaying (assuming of course that the DataSet is stingly typed). Can anybody provide any pointers? So far I have only managed to associate the DataSet in the designer (well, that bits not exactly difficult is it!). Thanks. Tag: Controls Subclassing in .NET Tag: 66292

Does anyone has such expirience?Share it please:
thanks

Re: Controls Subclassing in .NET by hirf-spam-me-here

hirf-spam-me-here
Tue Feb 10 14:29:05 CST 2004

* "=?Utf-8?B?U2xpbSBTaGFkeQ==?=" <LordDaemon@softhome.net> scripsit:
> Does anyone has such expirience?Share it please:)

Are you referring to "listening" to the WindowProc of a specific
control? You can do that by overriding its 'WndProc' method.

--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>

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Re: Controls Subclassing in .NET by LordDaemon

LordDaemon
Wed Feb 11 01:21:06 CST 2004

actually not exactly - i want to be attached to a specific resource, in example an MDI Applciation and to monitor and track all user events on all the controls that application contains , toolbars , menus ..etc
is overriding of WndProc can be useful in this approach - i mean can i from inside to track which control from the tracked applicaiton was active and what message was passed

* "=?Utf-8?B?U2xpbSBTaGFkeQ==?=" <LordDaemon@softhome.net> scripsit
> Does anyone has such expirience?Share it please:

Are you referring to "listening" to the WindowProc of a specifi
control? You can do that by overriding its 'WndProc' method

--
Herfried K. Wagner [MVP
<http://www.mvps.org/dotnet

Does anyone has such expirience?Share it please:
thank

Top