Validation controls are not working

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  - 1
    - Maximize and resize Windows Dear all, I am a newby of .NET programming and I have a general question. If I put some controls on a windows form (say with size 300,400), when I resize the Window (enlarging it) or if I Maximize it, the controls remain in the top left corner in the rectangle 300,400 making the whole form look very bad. If I resize Notepad, the multiline textbox within resizes too... I'd like my applications do the same. Are there techniques, articles, tutorials or something like that, that can explain me how to handle this? Thanks in advance. JC Tag: Validation controls are not working Tag: 95232
  - 2
    - FormView / GridView Connection If someone could help... My goal is to attach a FormView control to a GridView control such that clicking the Select link on a record in the GridView will cause that record to be displayed in the FormView control. So far I've got the GridView displaying all the correct records, and the FormView populating on the page's initial load. The FormView has its own data source - it points to the same table the GridView uses, but has a 'where' clause that refers back to the GridView control on two fields. The datasource has default values for those two fields, and the data that is displayed on the initial page load reflects the record whose keys equal the default values. So far, so good. When I click another line's Select link, the page repaints, but the FormView control is empty. Viewing the source I can see its skeleton, but no content. I've breakpointed at the control's PreRender function, and the DataItem is populated on the initial page load, but is null on the postback. I'm sure I'm missing something fairly basic. Can I get a point in the right direction? Thanks, Ben -- bf001removethis@abovetheline.biz Tag: Validation controls are not working Tag: 95231
  - 3
    - Problem creating controls from other thread w/ invoke Hi, I have a form which acts as monitor for a service. The form and the monitor communicate via remoting. Because it takes some time for the service to startup some controls are added to the form when a certain event is raised by the service. However, when handling this event I do the following: --------- snip --------- private void EventProxy_Initialized(object sender, EventArgs e) { MethodInvoker invoker = new MethodInvoker(this.CreateCommunicatorControls); this.Invoke(invoker); } private void CreateCommunicatorControls() { // create controls and add them to a panel on the form this.panelCommunicator.Controls.Add(newCommCtrl); [...] } --------- snip --------- The panel on the form is created from the main UI thread of the form., but I still get the exception "Controls created on one thread cannot be parented to controls on a different thread" when adding the new control to the panel. Does anybody know what the problem is? Regards, Michael Tag: Validation controls are not working Tag: 95226
  - 4
    - Getting the list of colors! Hi, I want to retrieve the list of Colors available and display them in a drop down combo. But the Color strcture doesnt seem to have a method that returns the list of colors. Is there an enumerator that I can use? Sinex Tag: Validation controls are not working Tag: 95217
  - 5
    - How to show transparaent label in window forms Hi, I try to add a label to a windows form, but as background is image, the label need to be transparent, but it seems no transparent property available, I found a one in web tab, but it does not work. Help Thanks Jessie Tag: Validation controls are not working Tag: 95213
  - 6
    - How to show fields from related tables in same datagrid I run VS .Net 2003. I have a distributed application with sql server 2000 and windows front end, written in c#. I have a number of tables in a dataset with relations between them. In one single read-only datagrid I would like to display child rows from a child table as well as one column from the parent table. How can I fix this in an easy way? I thought I could handle this via dataviews and dataviewmanager as source for the datagrid, but I have not found any good article. I need a detailed explanation as I am a novice on this. I realize I could produce a new table on the windows client from the two related tables, but as I consider the data structure to be well designed this is not what I would like to do. Regards Tore Tag: Validation controls are not working Tag: 95208
  - 7
    - How to draw a 1 pixel long line using Graphics.DrawLine? I am writing a Windows Forms application graphing routine using VS.NET 2003, Visual C# and .NET Framework 1.1. The Graphics.DrawLine(Pen,int,int,int,int) method seems to work okay unless the desired line being drawn is only one pixel long (horizontally). I have not found a way to get a horizontal line of only one pixel to be drawn. I either get no line or a two pixel line. Example method calls: Graphics.DrawLine( Pen, 20, 50, 21, 50 ); // Results in two pixel long line. Graphics.DrawLine( Pen, 20, 50, 20, 50 ); // Results in no pixels being drawn. So how do I get a one pixel long line? Thanks, Dave Tag: Validation controls are not working Tag: 95205
  - 8
    - Playing File Progress AVI Is there a way in VB.NET 2005 to play the file progress avi file on a Winform? I know there use to be a control in VB6 but there does not seem to be one for .NET. I would rather not use external DLL's that I have to send along with my EXE. Thanks, David ====================================== David McCarter www.vsdntips.com VSDN Tips & Tricks .NET Coding Standards available at: www.cafepress.com/vsdntips.20412485 Tag: Validation controls are not working Tag: 95202
  - 9
    - ClickOnce I have today gone to production with my first .net 2.0 Windows forms app. I distributed it using click once. I was impressed with the .net framework 1.1, 2.0 looked even better from a developer point of view (generics are brilliant). But I have to say click once is the best thing microsoft has ever done. I published the app to my webserver, sent everyone a link, sat back and grinned. It felt so good I even built a quick enhancement just so i could do an update in the afternoon. The last software distribution i did was a vb6 app and involved sending ~20Mb of install set around to 100+ people, so you can imagine how good this felt. Well done microsoft! If you havent played with this technology then i would definitely suggest you have a go. Desktop Apps are back! Cheers -- David Steele Recent VB6 - Dot net convert Tag: Validation controls are not working Tag: 95200
  - 10
    - Painting Problem Hello, I am currently using VB 2005 and having a problem I hope that some one can help me with. Currently in my project, I create and add a panel at run time and on this panel, I draw a gradient along with several text strings. This panel is docked at the top of the form and I also create another that is docked at the bottom of the form. The problem I am experiencing is that whenever I hover over the min/max button or bring up any shortcut menus like clicking on the control box, where ever the tooltip or pop up menu was will leave nothing but the background color of the panel instead of refreshing the the gradient and any strings drawn in that section as well. However, this only happens when the first one pops up, if any more pop up after that, the panel seems to paint correctly in that area when the popup/tooltip disappears (although the previous area will remain blank). If I minimize the form and then bring it back up, the entire form is correctly drawn, but the problem happens exactly as it did before where the first popup causes a problem and the rest do not. The second part of the problem is when tabbing over to another control... all of a sudden both panels drawn will go completely blank to whatever the default background color is and will only come back if minimizing the form and bringing it back up again. Below is the code I am using in my form (the panels uxHeader/uxFooter are simply added during the form_load event with all their defaults aside of dock and height), hopefully someone can see my problem or suggest a resolution to it, thanks in advance: Public Class form_main Private Sub form_main_Paint( _ ByVal sender As Object, _ ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint DrawGradient( _ 0, 0, uxHeader.Width, uxHeader.Height, _ Color.Black, Color.LightSlateGray, uxHeader, Drawing.Drawing2D.LinearGradientMode.Vertical) DrawGradient( _ 0, 0, uxFooter.Width, uxFooter.Height, _ Color.LightSlateGray, Color.Black, uxFooter, Drawing.Drawing2D.LinearGradientMode.Vertical) DrawString( _ uxHeader, "Data Copy Setup", Brushes.SteelBlue, 11, 48, _ New Font("Trebuchet MS", 14, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Data Copy Setup", Brushes.White, 10, 47, _ New Font("Trebuchet MS", 14, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Citizens Bank", Brushes.SteelBlue, 306, 10, _ New Font("Trebuchet MS", 12, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Citizens Bank", Brushes.White, 305, 9, _ New Font("Trebuchet MS", 12, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Wintel Services", Brushes.SteelBlue, 306, 23, _ New Font("Trebuchet MS", 24, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Wintel Services", Brushes.White, 305, 22, _ New Font("Trebuchet MS", 24, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Migration Data Copy Tool", Brushes.SteelBlue, 338, 48, _ New Font("Trebuchet MS", 12, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxHeader, "Migration Data Copy Tool", Brushes.White, 337, 47, _ New Font("Trebuchet MS", 12, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxFooter, "version 1.0.0", Brushes.SteelBlue, 416, 21, _ New Font("Trebuchet MS", 10, FontStyle.Bold, GraphicsUnit.Pixel)) DrawString( _ uxFooter, "version 1.0.0", Brushes.White, 415, 20, _ New Font("Trebuchet MS", 10, FontStyle.Bold, GraphicsUnit.Pixel)) End Sub '--------------------------------------------------------------------------------------------------------------------------------- ' Sample Call: ' ' DrawGradient( _ ' 0, 0, uxHeader.Width, uxHeader.Height, _ ' Color.Black, Color.Gainsboro, uxHeader, Drawing.Drawing2D.LinearGradientMode.Vertical) '--------------------------------------------------------------------------------------------------------------------------------- Private Sub DrawGradient( _ ByVal x As Integer, _ ByVal y As Integer, _ ByVal w As Integer, _ ByVal h As Integer, _ ByVal color1 As Color, _ ByVal color2 As Color, _ ByVal ctrl As Control, _ ByVal mode As System.Drawing.Drawing2D.LinearGradientMode) Dim a As New System.Drawing.Drawing2D.LinearGradientBrush(New RectangleF(0, 0, ctrl.Width, ctrl.Height), color1, color2, mode) Dim g As Graphics = ctrl.CreateGraphics g.FillRectangle(a, New RectangleF(x, y, w, h)) g.Dispose() End Sub '--------------------------------------------------------------------------------------------------------------------------------- ' Sample Call: ' ' DrawGradientString( _ ' "Sample", Color.Blue, Color.Firebrick, _ ' Drawing.Drawing2D.LinearGradientMode.Vertical) '--------------------------------------------------------------------------------------------------------------------------------- Private Sub DrawGradientString( _ ByVal text As String, _ ByVal color1 As Color, _ ByVal color2 As Color, _ ByVal mode As System.Drawing.Drawing2D.LinearGradientMode) Dim a As New System.Drawing.Drawing2D.LinearGradientBrush(New RectangleF(0, 0, 100, 19), color1, color2, mode) Dim g As Graphics = Me.CreateGraphics Dim f As Font f = New Font("verdana", 16, FontStyle.Bold, GraphicsUnit.Pixel) g.DrawString(text, f, a, 10, 100) g.Dispose() End Sub '--------------------------------------------------------------------------------------------------------------------------------- ' Sample Call: ' ' DrawString( _ ' Me, "Wintel Operations", Brushes.Black, 12, 102, _ ' New Font("Trebuchet MS", 24, FontStyle.Bold, GraphicsUnit.Pixel)) '--------------------------------------------------------------------------------------------------------------------------------- Private Sub DrawString( _ ByVal ctrl As Control, _ ByVal text As String, _ ByVal b As Brush, _ ByVal x As Integer, _ ByVal y As Integer, _ ByVal f As Font) Dim g As Graphics = ctrl.CreateGraphics g.DrawString(text, f, b, x, y) g.Dispose() End Sub End Class Tag: Validation controls are not working Tag: 95199
  - 11
    - Multi-page configuration with TreeView. How is it done? Hi there, I need to do something like the Visual Studio "settings" window, i.e., having a TreeView on the left side and some kind of multi-panel (or multi-page) control on the right side. What should I use on the right side? I thought it was a TabControl, but I can't find a way to make the TabPage headers invisible. Thanks in advance for any ideas, -Benton Using VS 2005. Tag: Validation controls are not working Tag: 95195
  - 12
    - Derived DataGrid not displeyed correctly Hi! I derived a new class from a DataGrid control and added some functionality to it. Among other things a method that autosizes the columns displayed. When I change the data source and data member of the datagrid after having updated some data in it, it sometimes does not display correctly. What happens is that some cells from the old view is visible in the new view. I do not know what is the problem, but my guess is that it has something to do with the repainting of the derived datagrid. Do I need to do something in the derived data grid to get the painting to work correctly? -- / ScubaD Tag: Validation controls are not working Tag: 95194
  - 13
    - Screen Savers: How do I spawn a process... I have a machine that will be used to demo some Excel spreadsheets at a convention. Because I did not author the spreadsheets and attendees will be allowed to play with the spreadsheets, I needed a way to periodically restore the original versions. In addition to the "always-on-top click this button to reset demo" application I wrote, I chose to use screen saver code to reset the demo after a period of inactivity in the event an attendee just walked away. I chose the screen saver method because I was unsure how to capture the system traps since my reset-app will not always have focus and so using the screen saver method seemed to be the quickest/easiest solution. So... I can spawn a new process from an application and that process remains running after the application is closed. This is good. Using the same code in a screen saver and running it while its an .EXE (prior to renaming it .SCR & relocating it to the system directory), the new process remains running after the screen saver application is closed. This is good. I rename the screen saver to .SCR, relocate it in the system directory, right-click the Desktop background, select Properties / Screen Saver / etc., click the Preview button to execute the screen saver and the new process remains running after I select Ok or Cancel to cancel the screen saver. This is good. Now I allow the system to kick off the screen saver at whatever inactivity timeout. The screen saver executes, the new process executes but it closes when the screen saver closes. This is bad. Here is the code being used: private void ScreenSaverForm_Load(object sender, System.EventArgs e) { string InstallPath = (string)Registry.LocalMachine.OpenSubKey(@"SOFTWARE\MyApp").GetValue(@"Path"); ProcessStartInfo startInfo = new ProcessStartInfo(InstallPath + @"\MyFile.xls"); startInfo.WindowStyle = ProcessWindowStyle.Maximized; Process.Start(startInfo); Close(); } I have also tried including "startInfo.UseShellExecute = true;" but results were the same. Unless I am totally off then obviously the operating system is handling/executing screen saver code differently at the final stage. Other than basic skeleton code required for a screen saver, I am unable to find any 'real' documentation on screen saver programming. For example, through trial & error I discovered that the screen saver filename must follow the 8.3 naming convention - unless I'm doing something wrong there as well? Anyway... 1. Most importantly, what is the code for spawning a new process from within a system activated screen saver such that the new process remains running after the screen saver closes? 2. Is a screen saver filename in fact limited to the 8.3 naming convention? 3. Where is the screen saver application name set or read from? For example; if your filename is 'ssMyDemo.scr' then the system will drop the prefix of 'ss' and display 'MyDemo' in the screen saver list. If there is no 'ss' then the filename, excluding extension, will display in the screen saver list. But if you examine a default OS provided screen saver you will see that the filename 'ss3dfo.scr' displays as '3D Flying Objects' in the screen saver list. How is this accomplished? 4. Is there a "Everything you ever wanted to know" type source on screen saver programming; net, book or otherwise? TIA, -Jeff Tag: Validation controls are not working Tag: 95193
  - 14
    - Event question I have a component (Say Component1 )which has two public functions and one event(Say Func1 and Func2 and event is MyEvent) This component is being used by a second component(Say Component2) Here is the flow of events 1) Component2 intantiates Component1 2) Component2 registers for the event MyEvent 3) Component2 calls function Func1 4) In Func1 of Component1 the event MyEvent is raised. Func1 has to do more work but event is raised in the middle of Func1. 5) Component2 receives event and calls Func2. In this test case I just want to know is there a way to detect/prevent Component2 from calling Func2 until the call to Func1 ends. It is kind of reentry problem of the Component1. Because the Component1 is not thread safe. The Func2 changes the state of the Component2. In this case after executing Func2 the code will fall back to Func1 which will see a changed state. Is there a way to stop it or making Component2 not to be re-entrant. Thanks in advance Tag: Validation controls are not working Tag: 95192
  - 15
    - ProfessionalColors class cheat sheet I'm looking for a visual cheat sheet for using the ProfessionalColors class with the 2.0 framework controls. Sean Lively Tag: Validation controls are not working Tag: 95191
  - 16
    - Sample from MSDN on <ApplicationSettingsBase Class> has a Resize Hello, I have a problem with the sample from the following article: http://msdn2.microsoft.com/en-us/library/system.configuration.applicationsettingsbase.aspx When the form is resized from the left side, or top, it will change the location to the point where it was resized to and keep the original size. I am assuming that this is not the default behavior in this case. Is there a workaround? Thanks. Regards, Genadij. Tag: Validation controls are not working Tag: 95188
  - 17
    - Disable Sorting in VB.NET I thought the only thing I had to do to disable column sorting in VB.NET was to set datagrid.AllowSorting = False. Unfortunately this has never worked for me. I discovered another set of code that seems to work for 99% of the cases where I need to disable datagrid column sorting: Private Sub datagrid_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles datagrid.MouseDown Dim pt As New Point(e.X, e.Y) Dim hti As DataGrid.HitTestInfo = dgACE.HitTest(pt) If hti.Type <> DataGrid.HitTestType.ColumnHeader Then MyBase.OnMouseDown(e) End If End Sub However, this code does not work when my datagrid resides on a user control. The datagrid_MouseDown event is triggered but sorting still occurs for the column. It's critical that I disable sorting in the datagrid due to the other things I am trying to do with the datagrid. I'm about ready to pull my hair out trying to figure this one out so any suggestions on how to resolve this issue would be greatly appreciated! Thank you! Joy Tag: Validation controls are not working Tag: 95186
  - 18
    - FlowLayoutPanel - Move Control (.NET 2.0) Is there a way of changing the position of a control in a FlowLayoutPanel? The only ways I can see is by systematically calling BringToFront on each control in the right order or by pulling all the control out and ading them back again in the correct order. Both these ways seem to me to be kludges. TIA Tag: Validation controls are not working Tag: 95185
  - 19
    - How to combine AutoScroll and virtual content scroll I am a .NET newbie and started working on al user control, where one scroll dimension -- say horizontal -- moves the contained controls (like AutoScroll) and the other dimension leaves the controls sticky and updates the virtual content of the contained controls -- lets say some text boxes -- with .NET 2.0. I tried to use AutoScroll by setting ScrollableControl.AutoScrollMinSize.Height to the virtual content size and updating the content of my text boxes by using a Scroll event handler. But this also moved my text boxes vertically and I was not able to reset their location without introducing flickering. Question: Is there a way to make some contained controls remain sticky or is there a way to make to movement of the controls invisible? My second approach was to use manual scrolling. Besides that this approach introduces a lot more code and I had to do the layout manually, it introduced flickering of the scroll bars when resizing. I assume that this is introduced by the timig of layouting and control-repainting. With my first approach by using AutoScroll there was no flickering when resizing the control. Question: Is there a flicker save way to do layouting and painting of contained controls. Thanks in advance for any hints. But I want to do it purely using platform independent .NET code, so overriding WndProc or using P-Invoke is not an option for me. Tag: Validation controls are not working Tag: 95183
  - 20
    - Fonts and Labels in a Windows Form Messed Up? I'm converting a .NET 2.0 Beta project to the final version using Visual Studio. In doing so, I've come across a strange problem with the fonts in my labels. To see the problem, I have an empty form with 2 labels, one "Timing Details:" and one "Package Details:" - each one Bolded. When viewing the form in design mode within Visual Studio, everything looks good - as expected. But when I run the form, the word "Details" in each of the two labels looks different. The second one looks scrunched up. Here's the guts of my form code - nothing out of the ordinary as far as I can tell: partial class Form1 { private void InitializeComponent() { this.packageDetailsGroupLabel = new System.Windows.Forms.Label(); this.timeDetailsGroupLabel = new System.Windows.Forms.Label(); this.SuspendLayout(); // // packageDetailsGroupLabel // this.packageDetailsGroupLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.packageDetailsGroupLabel.Location = new System.Drawing.Point(12, 47); this.packageDetailsGroupLabel.Name = "packageDetailsGroupLabel"; this.packageDetailsGroupLabel.Size = new System.Drawing.Size(163, 13); this.packageDetailsGroupLabel.TabIndex = 22; this.packageDetailsGroupLabel.Text = "Package Details:"; // // timeDetailsGroupLabel // this.timeDetailsGroupLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.timeDetailsGroupLabel.Location = new System.Drawing.Point(12, 9); this.timeDetailsGroupLabel.Name = "timeDetailsGroupLabel"; this.timeDetailsGroupLabel.Size = new System.Drawing.Size(163, 13); this.timeDetailsGroupLabel.TabIndex = 21; this.timeDetailsGroupLabel.Text = "Timing Details:"; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(220, 79); this.Controls.Add(this.packageDetailsGroupLabel); this.Controls.Add(this.timeDetailsGroupLabel); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); } private System.Windows.Forms.Label packageDetailsGroupLabel; private System.Windows.Forms.Label timeDetailsGroupLabel; } If you have any ideas, or would like to see a screenshot of what I'm talking about, please let me know. Thanks, Chris Tag: Validation controls are not working Tag: 95181
  - 21
    - Listen event on different thread and update data on UI thread Hi, I have a class in which I am receiving a event continuously at a great speed. I need to listen to that event and show it on the grid in the GUI. The problem is that the event is very very fast. How can I listen to this event in a separate thread. Then take the data and put it in the DataTable. I can send this DataTable back to the GUI thread where I have a windows form on which I have applied the grid control. Please let me know if I am not clear. Please help. Regards, Rajat. Tag: Validation controls are not working Tag: 95179
  - 22
    - Form and a MCppCodeDomParser error: Hello. Every time I try and change the design or layout of the form I receive this error. MCppCodeDomParser error: However, the code will compile and run fine. Any ideas? -- www.integrated-dev-sol.co.uk Remove 123 from email address to reply. Anti spam and virus measure. Tag: Validation controls are not working Tag: 95177
  - 23
    - Visual Studio macro running as a STA thread Dear All, We have written a small set of dlls that contain some WinForms...we lauch these forms in Visual Studio using a macro. By default the macro thread is a MTA thread. Are there any issues if we make this thread an STA thread? I need this as an STA thread as the user wants to copy some elements from the grid in the clipboard. I don't want to create a separate STA thread for the copy functionality. Why is the macro thread an MTA thread? Is MS planning to change it back to STA thread? Please help Thanks in advance... Many regards Jack Tag: Validation controls are not working Tag: 95171
  - 24
    - Is IMessageFilter only for .net windows? Hi; (I am trying to figure out the best way to intercept Word's message pump in a .net app.) It looks like an IMessageFilter object can only be attached to the message pum of a .net Application so it could not be used with Word. Is this correct? -- thanks - dave Tag: Validation controls are not working Tag: 95163
  - 25
    - NativeWindow.ReleaseHandle Hi; I want to use NativeWindow to wrap the hwnd of Word (which is already running and so the window exists). I need to release the handle and dispose my NativeWindow object when the window goes away. As Word is not a .net app, it does not have .net windows and therefore I can't have it call an event. Do I just watch for the WM_DESTROY message in the message pump? -- thanks - dave Tag: Validation controls are not working Tag: 95162
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  - 1
    - Where is MyNativeWindowListener and MyNativeWindow? Hi; The VS 2005 documentation (release) for the NativeWindow class discusses the samples MyNativeWindowListener & MyNativeWindow. But I cannot find the actual samples anywhere. Where are they? -- thanks - dave Tag: Validation controls are not working Tag: 95161
  - 2
    - Take over screen. I need to write an app where I use the entire screen. This includes getting rid of the task bar. How do I do that? TIA - Jeff. Tag: Validation controls are not working Tag: 95154
  - 3
    - Databound ListBox Won't Update on Clear? I have a ListBox control bound to an ArrayList: m_expressionFilters = New ArrayList m_expressionBindingManager = BindingContext(m_expressionFilters) lstboxFilters.DataSource = m_expressionFilters When I add an Item to the ArrayList, that change is immediately reflected in the ListBox: m_expressionBindingManager.SuspendBinding() m_expressionFilters.Add(CurrentFilter) m_expressionBindingManager.ResumeBinding() However, when I call the Clear method of the ArrayList, the changes are not reflected in the ListBox: m_expressionBindingManager.SuspendBinding() m_expressionFilters.Clear() m_expressionBindingManager.ResumeBinding() At this point, the m_expressionFilters ArrayList has a Count of zero, but the Items formerly held in the ArrayList are still listed on the form in the ListBox. I have tried calling the Refresh and Update methods on the ListBox, but that produced no visible changes at all. Any help or advice would be greatly appreciated. Carl Tag: Validation controls are not working Tag: 95151
  - 4
    - crystal integration Using v1.1 of the .Net Framework, I added a Crystal Report item to my solution as an embedded resource. My problem is that when I drop a ReportDocument component onto my form, the window that prompts me to select a typed reportDocument does not include in its drop-down the embedded report that I added, and so I can't integrate the report into the form thru the crystalReportViewer. Any idea why I wouldn't see the report show up in the drop-down? Thanks! Tag: Validation controls are not working Tag: 95147
  - 5
    - Handling System Shutdown in a WindowsForms App Hi. I have an application that runs as a Tray Icon app with no visible window (most of the time) and right now, the system will not shut down while that app is running. I think I need to handle "SystemEvents.SessionEnded" or something to properly deal with that but I don't understand how, inside the code for my Main Form for the application, I set up a handler for the event and then what I actually DO with the event once it comes (though I assume I just do whatever I would normally do to exit my application grcefully). Can someone help me with a sample? Alex Tag: Validation controls are not working Tag: 95141
  - 6
    - Detect any kind of activity in a window. I need to write a function so if the user doesn't do anything in 15 minutes, it will log them out. I've got the timer set up fine I'm just looking for an easy way to detect people doing anything. What's the easiest way to do it? It looks like it may be mousemove on the windows. Is this reasonable? TIA - Jeff. Tag: Validation controls are not working Tag: 95140
  - 7
    - ListView.tag lost object Hi, I have a Form with two ListViews; The ListViews are diplayed on the Design surface, but I progmatically adding the items to each ListView. When adding the items to the list view I am iterating through and setting the following: ... With myListViewItem .Text = drArticles("Title").ToString .ToolTipText = drArticles("Summary").tostring .Tag = CType(drArticles("ID"),Guid) End With myListView.Items.Add ... This works fine and the items are displayed. The problem arises when I respond to a SelectedIndexChanged event I can retrieve the .ToolTipText and .Text values from then SelectedListViewItemCollection but the .tag property is always empty (it knows the object type is GUID but does not have the value. I know the value is being set as I can set the ToolTipText to same ID as the TAG and it is stored correctly. Any ideas? Many thanks in advance Tag: Validation controls are not working Tag: 95138
  - 8
    - ListView.tag loast object Hi, I have a Form with two ListViews; The ListViews are diplayed on the Design surface, but I progmatically adding the items to each ListView. When adding the items to the list view I am iterating through and setting the following: ... With myListViewItem .Text = drArticles("Title").ToString .ToolTipText = drArticles("Summary").tostring .Tag = CType(drArticles("ID"),Guid) End With myListView.Items.Add ... This works fine and the items are displayed. The problem arises when I respond to a SelectedIndexChanged event I can retrieve the .ToolTipText and .Text values from then SelectedListViewItemCollection but the .tag property is always empty (it knows the object type is GUID but does not have the value. I know the value is being set as I can set the ToolTipText to same ID as the TAG and it is stored correctly. Any ideas? Many thanks in advance Tag: Validation controls are not working Tag: 95137
  - 9
    - Close all windows in a VB.Net program I've got a VB.Net program where under a condition I want to close all of my windows (logging out the user due to inactivity). Is there a way to close all of the currently open windows without going through each one to check if it exists? TIA - Jeff. Tag: Validation controls are not working Tag: 95136
  - 10
    - General Windows Forms and Memory Question I am seeing an interesting memory issue with a winform in my application. I've noticed everytime I show a form in my application, the memory usage increases. When I close the form, the memory isn't released. The only time the memory is released is when I "minimize" the application. Eventually, overtime, my application consumes a good amount of memory. Has anyone experienced this? Thanks, Yosh Tag: Validation controls are not working Tag: 95135
  - 11
    - ClickOnce returns XML instead of starting application Hi I just deployed a ClickOnce Application to a Windows 2000 Server, which only has .NET 1.1 installed. When I launch the application via the auto generated html page I get the .Application XML back. I was expecting the application to launch. If I deploy the same SmartClient to my local XP machine with .NET 2.0, the applications installs and starts just fine. Am I missing something? Do I need to install .NET 2.0 on the Windows 2000 server, or do I need to register some MIME types on the server? If so, could you please provide a link (I can't find anything in the documentation... but I found place that said that I should be able to deploy to any HTTP 1.1 compliant web server). Please help. Thomas Tag: Validation controls are not working Tag: 95132
  - 12
    - .NET 2.0: ToolStripTextBox with Caption? In a Winforms 2.0 application, I have a StatusStrip which hosts a ToolStripDownDown item to display a small menu. The menu consists of two checkable menu items and one ToolStripTextBox . Now I want to display a simple caption on the left of the textbox. I cannot seem to find an easy possiblity to do this, altough this seems a very common scenario to me. After all, which programmer wants to just display a textbox without any caption? Can somebody help me? Do I really have to bake my own control inherited from ToolStripControlHost just for this? Thanks for any help Urs Eichmann Tag: Validation controls are not working Tag: 95129
  - 13
    - propertygrid hosting in IE I am not able to get properties in propertygrid with custom TypeConverter working properly when hosted in Internet Explorer. Please help Tag: Validation controls are not working Tag: 95128
  - 14
    - TabControl.OnDrawItem Hello ppl! I am manually drawing tab items in a TabControl by using a handler attached to the DrawItem event on such control. I am using rectangles inside the Item's region for the background and drawing strings for text using the graphics object provided in the DrawItemEventArgs. I al also painting the aread just to the right of the last tab with another rectangle in the same DrawItem event. The form runs just fine and I can see the tabs asd intended on the initial load. However, as I move the form to either the left or right just beyond the screen, my painted rectangle simply dissapears or gets smeared. If the form is moved beyog the screen's upper or lower boundaries the rectangle gets painted again. This also happens if another window is on top of the tabcontrol. I tried timers for refreshing the control and the form. Tried also a refresh on the form on a Move event and managed to eliminate the problem is the form moves beyond the right screen boundary but still the same problem on the left boundary. Anyway I can work around this? Thanks in advance sampe code of the event handler: private void tabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e) { Graphics g = e.Graphics; int lastTabIndex = this.tabControl1.TabPages.Count-1; System.Drawing.StringFormat textFormat = new StringFormat(); textFormat.Alignment = StringAlignment.Center; textFormat.LineAlignment = StringAlignment.Center; textFormat.Trimming = StringTrimming.None; textFormat.FormatFlags = StringFormatFlags.NoWrap; Rectangle tabRect = this.tabControl1.GetTabRect(e.Index); Rectangle lastTabRect = this.tabControl1.GetTabRect(lastTabIndex); //filler rectangle beyond last tab g.FillRectangle(new SolidBrush(Color.Blue), lastTabRect.Right, lastTabRect.Top, this.tabControl1.DisplayRectangle.Width, lastTabRect.Height); //tab Item background g.FillRectangle(new SolidBrush(Color.Red), tabRect); //Item text g.DrawString(this.tabControl1.TabPages[e.Index].Text, e.Font, new SolidBrush(Color.White), tabRect, textFormat); } Tag: Validation controls are not working Tag: 95127
  - 15
    - Splashscreen disappears I added a Splashscreen to my Windows Forms project. I specified it in Project - Application Tab - Splash screen. When I launch the project the splash screen turns up, which is fine. BUT then a NullReferenceException is thrown! I turned on "Break when an Exception is thrown" but it will not stop on a code line that is visible to me. My application uses a frmMain as start form. The frmMain code is enclosed by a Namespace. When I enclosed the SplashScreen code in the same Namespace and modified Project - Application Tab - Splash screen to point out the new full name, then the problem disappears, but so does the SplashScreen .......! As far as I can see there are no more settings I should have set to get it working. Tag: Validation controls are not working Tag: 95126
  - 16
    - Control to graphically connect listviews (or treeviews) Hello. I'm lookin for a way to have two listboxes whose some elements can be connected graphically by an arrow. The arrows should 'move' as the listboxes scroll, 'following' the elements they are attached to. It should be similar to the relations fields in graphic representation of SQL queries (as in Visual Studio's Query Designer) I'd like to have a similar effect with two treeviews (whose element can connected by arrows, as in Biztalk Mapper) Does anyone know if there is a third party control that allow this? Thank you. Tag: Validation controls are not working Tag: 95125
  - 17
    - Smart Client Offline Application Block in .NET 2.0? Hi, Couple of questions: 1. Does anyone know whether Microsoft have plans to redevelop the SCOAB for .NET 2.0? 2. Has anyone had experience using the existing release of SCOAB with .NET 2.0? We have recompiled the block in 2.0, and there are lots of warnings and a couple of compile errors (to do with Win32 calls using unsafe code within the caching component) in the release build. Thanks, Chris Tag: Validation controls are not working Tag: 95124
  - 18
    - persist a DataGridView's selected row after a sort The current row is not automatically persisted when sorting? Tag: Validation controls are not working Tag: 95122
  - 19
    - Run Time Controls hi, I'm adding 5 Text box controls during runtime in my windows application. I'm adding those in a for loop. But i got only one text box as result in my form. Why like this? And what i have to do for displaying all 5 text boxes? Regards, Gomathi Tag: Validation controls are not working Tag: 95117
  - 20
    - guide to design a custom/ flashy windows application I did developed a windows application which mainly does the function of displaying data and updating the data changed by the user using visual studio.net 2003 Now I want to improve the look and feel of the user interface of the application. I tried embedding some pictures onto the forms and then making the labels to have transperent color. But this change throwed an 'Invalid Value' error. Any suggestions for my issue resolving or regarding the development of user interface is greatly appreciated. Thanks in advance arun Tag: Validation controls are not working Tag: 95108
  - 21
    - Serializing/Deserializing from a Modal UI Editor I created a control that I derived from Windows Forms Control. I added one string property, which is the name of a file. This property is a Modal UI Editor property for which I provided a form named ShapeEditor. When the user presses the ellipsis in the Properties window of the control in the IDE, ShapeEditor is displayed and enables the user to draw shapes. The shape objects are collected in an ArrayList and then serialized to a file using a BinaryFormatter as follows. FileStream sw = new FileStream(ShapesFileName, FileMode.Create); ArrayList Shapes = new ArrayList(); // Create shapes and populate Shapes. .... Shapes.Add(ShapeObject); ..... // Then serialize bf.Serialize(sw, Shapes); // Deserialization is the reverse: Shapes = new ArrayList(); sr = new FileStream(ShapesFileName, FileMode.Open); BinaryFormatter bf = new BinaryFormatter(); Shapes = (ArrayList)bf.Deserialize(sr); // Use objects foreach (ShapeObject s in Shapes) Here is the problem. When I invoke ShapeEditor from the properties window foreach (ShapeObject s in Shapes) fails with an invalid cast exception even though Shapes[0].GetType() returns a ShapeObject. However, if I invoke ShapeEditor from a running program, everything works fine(the same code is executed). It is as if the IDE is somehow interferring with the deserialization. Any help greatly appreciated. Tag: Validation controls are not working Tag: 95107
  - 22
    - Custom Control ClipRegion Question In a few of my custom controls, I need to ensure that when the control goes from a partially obscured state to a fully exposed state, that the entire ClientRectangle control is re-rendered, rather than just the portion that was exposed. This seems like a simple thing, yet my simple mind hasn't come up with a solution that works in all cases... I've tried Graphics.SetClip, btw, and it didn't do anything. Perhaps I haven't interpreted the black box correctly... Any ideas appreciated... Tag: Validation controls are not working Tag: 95106
  - 23
    - BindingSource vs. old binding I'm getting myself confused about the new BindingSource. In the old days I'd bind a combobox like this to show the "productName" field: DataSet ds = getDS(); cboX.DataSource = ds.Tables["Products"]; cboX.ValueMember = "productID"; cboX.DisplayMember = "productName"; Now I guess I can do this: BindingSource bs = new BindingSource(getDS(), "Products"); which sets the bs.DataSource and the bs.DataMember (ie the table within the dataset). But, how do I tell it what field to display when the table has multiple fields? There is no longer any DisplayMember or ValueMember property. Tag: Validation controls are not working Tag: 95105
  - 24
    - Problem changing the size property in the Resize event I am trying to preserve the aspect ratio of a form when it is resized. To simplify the problem, I'm starting with a square form, and trying to keep it square when either the width or height is changed. My code is based on the example found in MSDN, July 2005, for the Control.Resize Event. Here is the relevant code: public class Form1 : System.Windows.Forms.Form { private Size _previousSize; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public Form1() { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // _previousSize = this.Size; } private void Form1_Resize(object sender, System.EventArgs e) { Control control = (Control) sender; System.Console.WriteLine( "Height={0}\tWidth={1}", control.Size.Height, control.Size.Width); Size newSize; // Ensure the Form remains square (Height = Width). if (control.Size.Height != _previousSize.Height) { System.Console.WriteLine( "Height changed: oldSize={0}", _previousSize.ToString()); newSize = new Size(control.Size.Height, control.Size.Height); System.Console.WriteLine("newSize={0}\n", newSize.ToString()); _previousSize = newSize; // save new value for previous size control.Size = newSize; } else if (control.Size.Width != _previousSize.Width) { System.Console.WriteLine( "Width changed: oldSize={0}", _previousSize.ToString()); newSize = new Size(control.Size.Width, control.Size.Width); System.Console.WriteLine("newSize={0}\n", newSize.ToString()); _previousSize = newSize; // save new value for previous size control.Size = newSize; } } } My code writes some debugging data to the console. Here is the debugging data that is produced when I execute the Size command from the control menu of my form, and press the right arrow key three times. Height=300 Width=311 Width changed: oldSize={Width=300, Height=300} newSize={Width=311, Height=311} Height=311 Width=311 Height=300 Width=322 Height changed: oldSize={Width=311, Height=311} newSize={Width=300, Height=300} Height=300 Width=300 The first press of the right arrow key just starts the resize operation. On the second press of the key, the code changes the Height from 300 to 311. But on the third press of the key, the Height has changed back to 300 on entry to the Resize event. That is the problem. On the screen, the form alternates between increased sizes and its original size. Does anyone know what's causing this problem? Tag: Validation controls are not working Tag: 95104
  - 25
    - Problems with Fonts in Visual Studio .NET I am trying to build a Windows applications with some special fonts (DIN). However, after installing the fonts, the fonts appear in almost all editors except Visual Studio .NET. Infact, the font even appears in the dropdown list box to select a font in the Tools | Options | Environment | Fonts and Colors dialog box... but for some reason, I cant use it in building applications... I dont see the the font listed in the drop down for Labels, Button Names, Form Names and such. Any help would be greatly appreciated. Thanks. Tag: Validation controls are not working Tag: 95100

hi,
I'm developing a website using .net faramework version 1.1 the issue i'm
facing is I put validation controls on my pages they all are working fine
here localy but when i upload them on webserver they all stop working , I
hosted my site at www.7host.com I dont understand what is the issue. Kindly
help me out
Regards
Noorali

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Re: Validation controls are not working by Herfried

Herfried
Thu Dec 08 17:02:07 CST 2005

Hi,

"nooali" <nooralichagani@hotmail.com> schrieb:
> I'm developing a website using .net faramework version 1.1 the issue i'm
> facing is I put validation controls on my pages they all are working fine
> here localy but when i upload them on webserver they all stop working ,

Note that this is a group dedicated to .NET Windows Forms. ASP.NET-related
groups can be found in the "microsoft.public.dotnet.framework.aspnet[.*]'
hierarchy. "microsoft.public.dotnet.framework.aspnet.webcontrols" is maybe
the best choice for your question.

Good luck!

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

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