Form.Dispose vs. Form.Close

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
    - ListView SubItems In VB 6 I could assign a .Tag value not only to the ListItem, but also to each of its subitems. I can't seem to find a way to do this in VB.NET ListView Control/ListViewItem. Is this possible? Any Examples? Thanks Tag: Form.Dispose vs. Form.Close Tag: 71588
  - 2
    - Recommend a c# forms book please I see three choices for C# Windows.Forms. 1. Petzold - Programming Microsoft Windows with C# 2. Sells - Windows Forms Programming in C# 3. Brown - Windows Forms Programming with C# Can anyone recommend a best book for a VB guy moving to C#? Patrick Tag: Form.Dispose vs. Form.Close Tag: 71585
  - 3
    - smart client, problem with a space in filename hi, i have a windows forms smart client, the executable name is "my app.exe". running win server 2003 enterprise. when i set a shortcut on the desktop to "http://localhost/exec/my app.exe", the shortcut is reset to http://localhost/exec/my and when i put quotes around it, windows adds a http in front of the quotes, which is an invalid url. i tried %20 instead of the space, but i get a fileNotFoundException for my%20app.exe. i can obviously choose a one-word file name, but it seems strange that IExec wouldn't be able to handle it. many thanks for any help tim mackey. --------------------------- 67d0ebfec70e8db3 Tag: Form.Dispose vs. Form.Close Tag: 71580
  - 4
    - what's the best way to detect click in child controls? If I have ControlX that contains ControlY, and the user clicks on ControlY, I want to catch that in ControlX. I know I could use the OnControlAdded override to add a click event handler to every control added to ControlX, but that only works one level deep unless I recurse through all the children and also handle every child's ControlAdded event, which is kind of ugly. Is there a better way? TIA, Bob Tag: Form.Dispose vs. Form.Close Tag: 71577
  - 5
    - Win form pops up with no reason Hi, I am using C#. I have a form (form1) with multiple controls on it. There is a button and when it is clicked it opens a different form (form2). When form2 is closed a method of form1 is run and form1 becomes active. On form1 there are multiple text fields. The problem is that when the form1 becomes active (after form2 was closed) and the focus is in a textbox and I hit the enter key, the second form (form2) pops up without any reason. For the text box I handle the keypress event but when this happens the event is not captured. I do not understand why form2 shows up without any reason. This happens only after form2 was opened and closed. If the form2 was not opened and I hit enter in the textboxes everything is working fine. Thank you. Tag: Form.Dispose vs. Form.Close Tag: 71575
  - 6
    - Tabpage Dynamically adding controls I am completely frustrated trying to control the order that dynamically created controls appear in a TabPage. I have tried tp.Controls.Add(myControl) in a loop which does not work. I then added my controls to a Control array Control[] oConts and tried tp.Controls.AddRange(oConts); which does not work Then I tried, in addition to the above, looping through and explicitly seting the childindex with tp.Controls.SetChildIndex(myCont,iIndex); which still does not work Is this a known bug or am I overlooking something very simple??? Tag: Form.Dispose vs. Form.Close Tag: 71574
  - 7
    - Suppressing paint event on forms Hello I need a way to disable form re-painting until I am done enabling and disabling all controls on the form. The problem I am having is that we have multiple objects (a security component and the specific business UI object) that will indepently enable and disable controls based on a user's role and the business rules of an object (for example, the user may have the rights to enter interview results, but if the applicant hasn't yet been invited, the Interview Results control will be disabled). We are using an Edit button on all our forms, so when that button is pressed, all the controls flicker on and off as the different objects run through their routines. What we want to do then is suspend form painting at the start of the various evaluations, let all the objects enable and disable the various controls, and at the end allow the form to paint the final state of all the controls. We looked into SuspendLayout, but it doesn't seem to cover our problem, plus it is too granular, applying only to the control it is called on. We would like to tell the form to suspend all re-drawing until we give the signal Any help would be appreciated Thanks -Tod Tag: Form.Dispose vs. Form.Close Tag: 71573
  - 8
    - combobox items, no tags? how come combobox items have no tags? they do in win32 api, Am I missing something or do combobox items really have no tags? how is one supposed to identify items other than by strings? Tag: Form.Dispose vs. Form.Close Tag: 71572
  - 9
    - Resize columns in a datagrid. Anyone know how to resize the columns in a datagrid, I ve tried setting the PreferredColumnSize, Invalidating and Updateing but to no avail. Im sure it is pretty easy? -- -- Br, Mark Broadbent mcdba , mcse+i ============= Tag: Form.Dispose vs. Form.Close Tag: 71571
  - 10
    - Network Detection When a user disconnects their wire to the network or those who use RAS disconnects - I need for my Winforms app to be informed the moment it happens. What is the best way to code this in C# ? Any examples or code snippets? Tag: Form.Dispose vs. Form.Close Tag: 71566
  - 11
    - Setting focus in OnLoad not working Hello I have a few forms where I want to set the focus to a specific control thats not the first one in the taborder. Ive tried to do that in OnLoad but that doesnt work, the focus reverts to the first control. In one form where I just want the focus to change from a tabcontrols tabs to the first real control I managed to get it to work by setting the focus in the VisibleChanged event. But in another one that I reuse for questions to the user (so the control will be shown and hidden many times) that doesnt work either. In what event should I be doing this? I cant change the taborder, it just wont work with the controls (you cant set a tabcontrol to be selected after its pages). Thanks in advance, Dan Tag: Form.Dispose vs. Form.Close Tag: 71559
  - 12
    - slow transparent panel Hi, I have a form with a background picture on it. In this form there are several panels with a transparent background. The paint of the panels is very slow. Is there a way to speed things up? Thank's Perry Tag: Form.Dispose vs. Form.Close Tag: 71557
  - 13
    - Language attribute for exe and dll files I have build my application (it's consist of 2 assemblies) and gets 2 files app.exe and app2.dll So when I open Windows Explorer and click (right button :)) on any of those files then select "Properties" from popup menu and than select Version tab the Language attribute value is always "Language Neutral". It need to put there "English (United States)" but can't! (it's company rules) Using of [assembly: AssemblyCulture("")] [assembly: NeutralResourcesLanguageAttribute("")] at AssemblyInfo.cs file gives no result. Always - Language Neutral The application has no Multilanguage support. Only English. Can someone help me? We make several builds per day and I need automatic way to set this attribute. (I know that I can open exe or dll files at VS and change Language attribute manually but I need automatic way) P.S. All assemblies distributed from Microsoft have setted Language attribute to "English (United States)". Hey, guys, how are you do this? Thanks, Alex Tag: Form.Dispose vs. Form.Close Tag: 71555
  - 14
    - Save & Restore Object Hello I wrote a little dialog-form and now I want to do something like this When the user opens the form the actual state of the complete form and all its controls is saved into a variable of the form itself. The user probably manipulates some controls but then the user clicks on the "Cancel"-button. Now the old state should be restored How can I achieve this type of serialization. (I don't want to save the state to a file) Tag: Form.Dispose vs. Form.Close Tag: 71551
  - 15
    - background logo image in MDI application i've designed windows application in VB.NET using MDI forms. I actually like to have a logo image in the background of MDI parent. how can I achieve it?. Tag: Form.Dispose vs. Form.Close Tag: 71550
  - 16
    - Windows Performance hi, I have a windows application that will be having abt 25 - 30 forms open. I needed some performance stats regarding: 1. if i close the form, do i close it or just hide it. is there any gain in hiding the form ? 2. Is it better to keep the form in memory or cache the data and re-populate the form when it is again called for. Any help is appreciated. TIA :) Tag: Form.Dispose vs. Form.Close Tag: 71542
  - 17
    - resizing Hi All, I have in my windows form, a set of controls which is Label, Edit, Label and another edit. These are lined up horizontally. When I resize the form horizontally, I want both the edit controls to grow by an equal amount. which means label 1 stays where it is edit1 stays where it is but increases in width label 2 moves horizontally but retains the size edit 2 moves horizontally and increases in width. Can this be easily achieved in the designer or do I have to write code for it ? TIA, --Saurabh Tag: Form.Dispose vs. Form.Close Tag: 71540
  - 18
    - Printing in .NET redundant? Every article or piece of information about printing a Windows Form in .NET suggests that I have to draw each control myself But when a Windows Form is refreshed the Form::OnPaint(e) method is called, where e is of type PaintEventArgs The OnPaint() base method ***DRAWS*** the controls and their contents into the graphics context (e.Graphics So it seems to be very silly and a downright waste of time that I have to basically reverse engineer th OnPaint() method to draw a form into the print handler's graphic context Is there no way to just print what is already drawn by the OnPaint() method Or is the necessary API purposely withheld by Microsoft Thanks for any help here Tag: Form.Dispose vs. Form.Close Tag: 71530
  - 19
    - Dynamic UserControls not rendering After creating a custom web user control in a ascx file I can dynamically add an instance of this control to the web forms Controls collection at runtime, but it won't render. Anybody know why? Tag: Form.Dispose vs. Form.Close Tag: 71528
  - 20
    - Using PropertyGrid to display a struct type attribute I am using PropertyGrid to display some attributes, one of them is a key/value pair struct. When you click on the attribute, a standard dialog box will popup that I can edit the values. My question is how can I access this dialog box? For example, there is a help button on this dialog box and I'd like to link some help information to. Appreciate any advice. Thanks, -Jinlin Tag: Form.Dispose vs. Form.Close Tag: 71525
  - 21
    - TextWidth In VB6 there was a function for the WindowsForm called TextWidth. This function when called passing a string you would return the width of the string as it will be displayed on your screen. With this I was able to appropriately set the controls width property with the contents of its text property. Making the text to be displayed in its entirety without being cutoff. Is there a VB.NET equivalent? I looked around for this function and it no longer exists. Is there a system class that would do the same for me Thanks... Tag: Form.Dispose vs. Form.Close Tag: 71523
  - 22
    - forcing form to resize upon load Hi! I am experiencing a peculiar problem with some old Active X control I am using in my C# winform. Once the form loads, the control layout position withing the form is incorrect. As soon as I manually resize the form, the control's layout becomes as intended. I need to either fix the control (I am not sure if possible) or force the form to resize just a bit upon load. Is it possible If yes, what can I do to do that? Any ideas are greatly appreciated Thank you in advance --Sam D.. Tag: Form.Dispose vs. Form.Close Tag: 71521
  - 23
    - DataGrid Sorting returns wrong values from dataTable Hello, I have a datagrid in my C# application. The Grid has 4 columns, one is a Boolcoluumn, other 3 are string columns. Out of which bool column is editable & the last column is editable too. Using DataGridColumnStyle i've allowed Sorting to true for the whole Datatable. At a time the user is allowed to Enable only one bool column for the whole Grid. I've handled this using CurrentCellChanged event for that column by disabling all the row's bool value & enabling the selected one.Whenever the user clicks the column header to enable sorting either Ascending or Descending, it sorts accordingly based upon the clicked column header. The real problem is after sorting, when the user selects a particular bool column, in the CurrentCellChanged Event it gives the correct Row Number according to the selection, but using the Rownumber if i enable that selected row, it selects a different one rather than the currently selected row. The selected row happens to be the one which i've constructed in the begining. After sorting it hasn't updated the DataTable. I tried calling AcceptChanges() to the DataTable before selecting doesn't seem to work. I'm not sure is this a bug or a limitation with respect to DataGrid using DataTable & Dataset. Here's my sample code. private void CreateDataGrid() { myDataSet = new DataSet("myDataSet"); myDataTable = new DataTable("myDataTable"); DataColumn Parameter_cEnable,Parameter_cDefaultName,Parameter_cParameterInst,Parameter_ cParameterAssign; Parameter_cEnable = new DataColumn("Select", typeof(bool)); Parameter_cDefaultName = new DataColumn("DefaultName",typeof(string)); Parameter_cParameterInst = new DataColumn("Parameter",typeof(string)); Parameter_cParameterAssign = new DataColumn("AssignedName",typeof(string)); myDataTable.Columns.Add(Parameter_cEnable); myDataTable.Columns.Add(Parameter_cDefaultName); myDataTable.Columns.Add(Parameter_cParameterInst); myDataTable.Columns.Add(Parameter_cParameterAssign); myDataSet.Tables.Add(myDataTable); DataGridTableStyle myDataGridTableStyle = new DataGridTableStyle(); myDataGridTableStyle.MappingName = "myDataTable"; myDataGridTableStyle.RowHeadersVisible = false; myDataGridTableStyle.ColumnHeadersVisible = false; myDataGridTableStyle.AllowSorting = true; myDataGrid.SetDataBinding(myDataSet,"myDataTable"); } PPLCols.DG_Selection is the bool column private void __ParmVar_DT_CurrentCellChanged(object sender, System.EventArgs e) { DataGrid dgLocal = (DataGrid)sender; if (dgLocal.CurrentCell.ColumnNumber == (int)PPLCols.DG_Selection) { foreach(DataRow myRow in this.__ParmVar_DataTable.Rows) { myRow[(int)PPLCols.DG_Selection] = false; } myDataTable.Rows[dgLocal.CurrentRowIndex][(int)PPLCols.DG_Selection] = true; __CurrentRowIndex = dgLocal.CurrentRowIndex; } } Any help will be appreciated. Thanks, Vijai Tag: Form.Dispose vs. Form.Close Tag: 71520
  - 24
    - DataGrid - Tab skips my custom column If you take the combobox column style from somewhere like the datagrid faq at syncfusion.com and replace the combobox with a button or another textbox and then fix up the code to compile and run, there will be a problem. When tabbing into the column in question, the focus will enter the column on the tab key press, and move on to the following column on the tab key up. This is obviously not what is desired. The reason I ask is that I wrote my own databound combobox control (because the Winforms one stinks - can't turn off the border,...), but when I use it in the grid like is done with the combobox example in the syncfusion datagrid faq, I get the behavior described above. Further investigation shows that I get that behavior with just about any control (button, textbox) except the raw combobox. Any ideas? Tag: Form.Dispose vs. Form.Close Tag: 71519
  - 25
    - Sharing stuff amoung forms Hi all ! Is there a way to share components among forms. I think especially about ImageList which should be created once and reused in every form. Database connecions is another example. TIA Best wishes Kai Bohli kaiboeNO_SPAM@online.no Norway Tag: Form.Dispose vs. Form.Close Tag: 71514
- Next
  - 1
    - User Interface Process Hi I'm using the UIP Application Block and I'm having difficulties when using a view that's modal and wanting the view to close when navigation is passed to another view I'm starting a new task via OnStartTask which luanches a set of forms we are using as a wizard to guide users through a use case. The first form opens correctly as a modal form but when I navigate to the second form via Navigate() the first form stays open. If I choose modal = false then the first form closes OK but I must have a modal form when launching the first form The UIP documentation within the "Creating the Views Section" states that if openModal is set to true, then stayOpen should be set to false but this does not seem to work. Any ideas would be appreciated Regard Mike Tag: Form.Dispose vs. Form.Close Tag: 71504
  - 2
    - problem with windows caption bar text... hi there, i have come across a problem with the caption bar in my vb.NET windows application. the main form is being used as a MDI form, which has an english caption, but one of my forms has a eastern european (macedonian) title. When the 2nd form is loaded, the MDI client shows the english caption, but the macedonian caption in brackets is shown as ?????? ?????? any help here? thanks, P. Tag: Form.Dispose vs. Form.Close Tag: 71491
  - 3
    - Bring To Front of a Process/Other application Hi, I want my application to bring another application to the Front. I thought best way to do this was by the Process-model: Dim c As Process = Process.GetCurrentProcess() Dim p As Process For Each p In Process.GetProcessesByName("EXTRA") If Left(p.MainWindowTitle, 4) = "Appl" Then 'Here I should be able to Bring the Process to the Front!!! Exit Function End If Next p Does anybody nows how to do this? Or another solution? Thanks! Pieter Tag: Form.Dispose vs. Form.Close Tag: 71484
  - 4
    - How to capture current cell address in a datagrid Hi How to capture the current cell address in a datagrid on vb.net ? In which event? I just want to store the current cell address in a global variable. This global variable should get an update everytime the user changes the control in the datagrid to a different cell which becomes current cell Note: I found that most other queries here talked of currentcell as a property. But for the datagrid name i have created, i do not find any such thing as eg. datagrid1.currentcell. In fact, for datagrid1, i dont find events such as currentcellchanged etc that all of you seem to be talking of Since i am literally a novice, i would appreciate if you can explain in detail where i am going wrong and how to go abt it in the right way Regards Giri Tag: Form.Dispose vs. Form.Close Tag: 71481
  - 5
    - Free Extensions Library Simplify application development with this free .NET framework extensions, which includes: + Straight-forward data access with in-memory databases: No need to manage connections, adapters, commands etc. + Soft XML rules + Extended controls library: Data control, progress bars, image buttons, explorer + Multilingual support with a single line of code + Intuitive data binding + Samples and utilities included Fully documented. Requires .NET framework 1.1 or later. You will be allowed to use the libraries in any application - private or commercial, and distribute them as part of your application, royalty-free. E-mail me for you free copy: ori@s-e-a.com.au Your acceptance of the license agreement will be required. Thank you -- Ori Millo Solutions Consultant SEA Software Ever After http://www.s-e-a.com.au Tag: Form.Dispose vs. Form.Close Tag: 71480
  - 6
    - Changing Application color to follow Change of System Color Hi Folks, I wrote a custom control with custom drawing. What I want to detect is when user change their system-wide color scheme, the custom control reflects that change as well. Does anybody know how to do this? -toni Tag: Form.Dispose vs. Form.Close Tag: 71479
  - 7
    - CurrencyManager.AddNew - Cancel ?? Hey Gang, I posted this on .DataBinding, but that is a dead group (no activity) so I retracted it. I am actively overcoming my fears and prejudices toward DataBindinding, and have come across another issue. My setup is like this: 3 textboxes bound to a table in the dataset (tbl1). A listbox that shows all records in the table. 3 more textboxes bound to tbl2 in the same dataset, the child table of tbl1. I have 2 currency managers, one for the Parent, and one for the Child tables. The AddNew button for the child calls cmChild.AddNew I need to havdle the case where a user then clicks another record in the listbox. I get an error thrown about tbl2 fields not allowing nulls. This occurs before any events on the CurrencyManager, and After my Listbox's Click event. How would I handle this (what event), and do I just call 'CancelCurrentEdit'? Thanks! Kevin Tag: Form.Dispose vs. Form.Close Tag: 71476
  - 8
    - ActiveX Control property missing I've placed an ActiveX control on my Form and that all works OK. The one problem I'm having is that the property Location is needed, but when it's converted to a windows forms control, the Location property is now meant for the location on the form. How can I use the property from the ActiveX control? Lance Tag: Form.Dispose vs. Form.Close Tag: 71471
  - 9
    - Populating ListBox with Attributes from XML Hello I have attribute-based XML that I have put into a DataSet. Ultimately, I want to dynamically put items in the list box where DataMember equals an attribute in the XML For example <Data><Classmates><Classmate Name="Sam" ID="2" /><Classmate Name="Sue" ID="4"/></Classmates></Data I want two items in the ListBox in this case: Sam and Sue What is the best way to accomplish this Thanks in advance -Sarah Tag: Form.Dispose vs. Form.Close Tag: 71470
  - 10
    - Webclient and Gzip Hey, I'm trying to set up a webclient to download a couple of DLL's and an .exe file. I know my server will be set up properly to accept gzip request and deliver the content gzipped... I know how to add the accept-encoding header to the webclient. What I don't know is if i have to decode the content coming back or if the webclient takes care of that for me... thanks in advance, Patrice. Tag: Form.Dispose vs. Form.Close Tag: 71467
  - 11
    - Datagrid Automatic Format Hi, I am populating datagrid with user defined queries, so I do not know, what table(s) the user will query. I want to automatically resize the column width as wide as (at least) the column name is. I didn't find any solution within the knowledge base for that problem. Any Ideas welcome ... thx Klaus Tag: Form.Dispose vs. Form.Close Tag: 71465
  - 12
    - Richtextbox Find problem Hi, The following function is a sample from the online documentation for VB.NET ---code--- Public Function FindMyText(ByVal searchText As String, ByVal searchStart As Integer, ByVal searchEnd As Integer) As Integer ' Initialize the return value to false by default. Dim returnValue As Integer = -1 ' Ensure that a search string and a valid starting point are specified. If searchText.Length > 0 And searchStart >= 0 Then ' Ensure that a valid ending value is provided. If searchEnd > searchStart Or searchEnd = -1 Then ' Obtain the location of the search string in richTextBox1. Dim indexToText As Integer = RichTextBox1.Find(searchText, searchStart, searchEnd, RichTextBoxFinds.WholeWord) ' Determine whether the text was found in richTextBox1. If indexToText >= 0 Then ' Return the index to the specified search text. returnValue = indexToText End If End If End If Return returnValue End Function ---code end--- the member function .Find gets a start parameter (int) and an end parameter, the documentation states, that if the end parameter is set to -1, the find is done backwards. It does not do it that way, or did I misunderstand ? I want to automatically select complete words that were entered, using the KeyUp Event and looking for the previous blank or CRLF (which should be the character preceeding any word. The start parameter I do set to RichTextBox1.SelectionStart -1 (remeber, the last character entered was a blank, which triggerd the event, so the last word entered ends at SelectionStart -1. Can anybody please hlep me in this ? thx Klaus Tag: Form.Dispose vs. Form.Close Tag: 71464
  - 13
    - Getting Strongly Named Flash Shockwave dlls for use with No-Touch Deployment Smart Client I am attempting to a Windows Forms application running as a Smart Client (e.g. No-Touch deployment). I found that unless I strongly named my application assembly, IEexec used by No-Touch deployment would load multiple copies of application in the download assembly cache (which would cause InvalidTypeExceptions in my application). However, my application has a Flash movie in it. The Shockwave dll's I have are not strongly named so I get the following error: "Unable to emit assembly: Referenced assembly 'AxInterop.ShockwaveFlashObjects' does not have a strong name" Strongly named assemblies cannot contain non-strongly named dll's. Does anyone know how to get or make strongly named versions of AxInterop.ShockwaveFlashObjects and Interop.ShockwaveFlashObjects? I tried using the tlbimp.exe utility, but it gives the following error: TlbImp error: The input file AxInterop.ShockwaveFlashObjects.dll' is not a valid type library. I tried using tlbexp to make a type library, but I couldn't use tlbimp to convert it back after that. Tag: Form.Dispose vs. Form.Close Tag: 71463
  - 14
    - Richtextbox.find Method does not work as described, or am I stupid ? Hi The following function is a sample from the online documentation for VB.NE ---code-- Public Function FindMyText(ByVal searchText As String, ByVal searchStart As Integer, ByVal searchEnd As Integer) As Intege ' Initialize the return value to false by default Dim returnValue As Integer = - ' Ensure that a search string and a valid starting point are specified If searchText.Length > 0 And searchStart >= 0 The ' Ensure that a valid ending value is provided If searchEnd > searchStart Or searchEnd = -1 The ' Obtain the location of the search string in richTextBox1 Dim indexToText As Integer = RichTextBox1.Find(searchText, searchStart, searchEnd, RichTextBoxFinds.WholeWord ' Determine whether the text was found in richTextBox1 If indexToText >= 0 The ' Return the index to the specified search text returnValue = indexToTex End I End I End I Return returnValu End Functio ---code end-- the member function .Find gets a start parameter (int) and an end parameter, the documentation states, that if the end parameter is set to -1, the find is done backwards It does not do it that way, or did I misunderstand I want to automatically select complete words that were entered, using the KeyUp Event and looking for the previous blank or CRLF (which should be the character preceeding any word The start parameter I do set to RichTextBox1.SelectionStart -1 (remeber, the last character entered was a blank, which triggerd the event, so the last word entered ends at SelectionStart -1 Can anybody please hlep me in this th Klau RichTextBox1.Find(searchText, searchStart, searchEnd, RichTextBoxFinds.WholeWord) Tag: Form.Dispose vs. Form.Close Tag: 71462
  - 15
    - UI Standards for .NET Hi, I am looking for any UI standards for .NET applications. I'm concerned with both Windows and web apps (we have an application suite that will be available on both platforms). Any pointers would be greatly appreciated. TIA, Derrick Tag: Form.Dispose vs. Form.Close Tag: 71461
  - 16
    - MeasureCharacterRanges inconsistent Hi If I make subsequent calls to MeasureCharacterRanges, specifying a rectangleF already determined by MeasureCharacterRanges, and the same Font and StringFormat, shouldn't it repeatedly determine the same bounds Example Dim f As New Font("Arial", 10 Dim sf As StringFormat = StringFormat.GenericDefaul Dim s As String = "test string Dim r As RectangleF =r.FromLTRB(100, 100, 200, 200 Dim g As Graphics = Me.CreateGraphic Dim ranges As CharacterRange() = {New CharacterRange(0, s.Length) Dim regions() As Regio sf.SetMeasurableCharacterRanges(ranges regions = g.MeasureCharacterRanges(s, f, r, sf r = regions(0).GetBounds(g Debug.WriteLine(r.ToString regions = g.MeasureCharacterRanges(s, f, r, sf r = regions(0).GetBounds(g Debug.WriteLine(r.ToString regions = g.MeasureCharacterRanges(s, f, r, sf r = regions(0).GetBounds(g Debug.WriteLine(r.ToString This code outputs {X=102,Y=101,Width=59,Height=15 {X=104,Y=102,Width=52,Height=14 {X=106,Y=103,Width=45,Height=13 My problem is this. If the first call to MeasureCharacterRanges returns proper bounds, then I should reasonably expect that subsequent calls would agree! My problem is that what I actually do in my project is call DrawString after a single call to MeasureCharacterRanges. Unfortunately, it too does not agree with the already determined bounds, and wraps my text unexpectedly Does anyone have the answer to this Thanks Brett. Tag: Form.Dispose vs. Form.Close Tag: 71460
  - 17
    - InvalidOperationException (The object is currently in use elsewhere) Hello. I ´ve got a picturebox that fills the whole screen and displays a "background-" image. Using the picturebox Graphics object, the user can draw lines, circles and so on onto that image. But unfortunately I sometimes get an exception like this: System.InvalidOperationExceptionSystem.InvalidOperationException: The object is currently in use elsewhere at System.Drawing.Graphics.EndContainer(GraphicsContainer container) at System.Windows.Forms.DibGraphicsBufferManager.ReleaseBuffer(GraphicsBuffer buffer) at System.Windows.Forms.GraphicsBuffer.Dispose() at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) I am using a GraphicsPath to represent the different shapes drawn by the user. I´ve now tried several hours to get rid of this error but no chance. Has anyone an idea? Thanks for help! Greetings, Tim. Tag: Form.Dispose vs. Form.Close Tag: 71456
  - 18
    - How to get normal state size of a maximized form? Is there a way to get a normal state size of a form when it is in maximized or minimized state? Tag: Form.Dispose vs. Form.Close Tag: 71450
  - 19
    - Customizing Label control Using VB.NET - I have a label on a form. The label.Text is "Test Label". Is there a way to make the word "Test" bold and the word "Label" not bold? Overriding OnPaint worked, but I am having trouble with the rendering out of the text. Can this be done? Thanks, Jason. Tag: Form.Dispose vs. Form.Close Tag: 71446
  - 20
    - What is the best way to guarantee data is saved? I have a grid and a "save" button to persist data to a local DataSet XML file, but am concerned that users may modify data and then attempt to exit the application without having committed their changes. What is the best way to handle this? Tag: Form.Dispose vs. Form.Close Tag: 71442
  - 21
    - Treeview Flickering Hi, My treeview is flickering whenever I change the text property of a node. I was searching the newsgroups on how to resolve this problem, and found the following solution: Inherited from a treeview and added the following code to its constructor: this.SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | ControlStyles.DoubleBuffer | ControlStyles.ResizeRedraw, true ); However, when I try this nothing at all is drawn! What am i missing? I am using C#.NET with VS2003 Thanks for helping me out! Tomas Tag: Form.Dispose vs. Form.Close Tag: 71431
  - 22
    - Compatibility with various Windows Media Player versions Hi to all, I'm developing a C# windows form project that will use the Windows Media Player 6.4 ocx (via the automatically generated .NET Wrapper). My question is...when I will deploy the application on many different pc, will she function also if the target pc(s) have a more recent version of Windows Media Player (for example the 9). Thanks a lot Dev Tag: Form.Dispose vs. Form.Close Tag: 71430
  - 23
    - printdialog extra copies when pointing to framework 1.1 from 1.0 I ran into a framework 1.0 printdialog problem where you always get 1 copy, no matter how many copies of print are requested. I heard that there was a fix in framework 1.1 for this problem. I used the 'supportedRuntime version="v1.1.4322' tag in my app.config file to point to framework 1.1 from my vb.net application, which was assembled under framework 1.0. I then started getting the number of copies squared. I you enter 2 copies, you get 4. If you enter 3 copies, then you get 9 copies and so on. I'm pretty new to vb.net, so does anyone have any ideas about this problem? I have both .net framwork 1.0 and 1.1 installed on my development PC. Thanks. Tag: Form.Dispose vs. Form.Close Tag: 71425
  - 24
    - datagrid sort order i have a win form w/ a datagrid inside while the app is running many instances of this form r created and closed how can i ensure that the sort user used last time is kept until the whole app is closed TIA Tag: Form.Dispose vs. Form.Close Tag: 71420
  - 25
    - Datagrid CurrentCellChanged Event I'm using the datagrid CurrentCellChanged event to track the last selected cell for doing checks after it is updated. The problem is that occasionally I need to modify the old cell, which causes another CurrentCellChanged and a refocus to the old cell I'm hoping for a clean solutions such as.. Is there a way to modify a non current cell without causing a CurrentCellChanged event to trigger Is there a way to selectively ignore an event (supress its trigger) Thanks in advanc Steven W Tag: Form.Dispose vs. Form.Close Tag: 71413

What is the difference between: Form.Dispose and Form.close. They both seem
to destroy the object. Or should both be called when closing a form? if so,
in what order?

Thanks

Top

Re: Form.Dispose vs. Form.Close by Paul

Paul
Thu May 13 01:08:19 CDT 2004

"T Cordon" <tcordonb@hotmail.com> wrote in message
news:#hZAx1GOEHA.1608@TK2MSFTNGP12.phx.gbl...
> What is the difference between: Form.Dispose and Form.close. They both
seem
> to destroy the object. Or should both be called when closing a form? if
so,
> in what order?
>
> Thanks

Hi!

The difference between Form.Dispose and Form.Close is large:

Dispose destroy the object, and
Close simply close the form (send message - WM_CLOSE), without destroy.

Top

Re: Form.Dispose vs. Form.Close by Justin

Justin
Thu May 13 01:41:38 CDT 2004

> Dispose destroy the object, and
> Close simply close the form (send message - WM_CLOSE), without destroy.

WM_CLOSE translates to WmClose() method on Form, which calls Dispose
under some circumstances. So the differences really aren't that large unless
you
are using validation and closing event cancellation logic.

--
Justin Rogers
DigiTec Web Consultants, LLC.
Blog: http://weblogs.asp.net/justin_rogers

Top