DataGridView visual inheritance

Windows Forms Designer

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    - Change second form's selected tabPage in tabControl Hello, Any advice or suggestions are appreciated! I'm trying to change the selected tabPage in a tabControl in a second form depending on an option chosen in the main form. So far, I have this in the main form (and tabControlDetail is on the frmDetail form): frmDetail myForm = new frmDetail (); myForm.SelectNextControl( TabPage ); ... I know--not much. The tabControl.tabPage property doesn't appear in anything I've tried so far. I'd like to do something like: myForm.tabControlDetail.SelectedTabPage(1) where 1 (or n) is the selected tabPage. Thanks for any advice, Tess Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - text change colour?? thanks Gavin - unfortunately that font didn't change, nevermind though, i'm happy with what i have now... thanks for all your help! Poy Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - can't remove or stretch background image in visual basic 6 (sp6) i know this is prolly a big newbie question but... i can't seem to remove or stretch a background image on one of my forms in my visual basic 6 project. i added it via picture property in the form's properties and now it says (bitmap) and i can't make it say (none) to clear the picture. thanks in advance Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - MDI Client should manually register in menu without beeing instantiated I'm guessing you're looking for a way to dynamically add MDI forms to a parent that doesn't know about them. It is difficult to query a class for a property without instantiating it. Even more difficult if you don't know the class name. Reflection could help out. You can add a constant to a class and retrieve its value. Something like this: public partial class Form2 : Form { private const string FindMe = "nobugz"; public Form2() { InitializeComponent(); } } To search the available forms, you'd have to iterate through the types in the assembly. This code can find both the form and the "FindMe" constant: using System.Reflection; ... Assembly asm = Assembly.GetExecutingAssembly(); foreach (Type t in asm.GetTypes()) { if (t.BaseType == typeof(Form)) { FieldInfo fi = t.GetField("FindMe", BindingFlags.Static | BindingFlags.NonPublic); if (fi != null) { string value = (string)fi.GetValue(null); Console.WriteLine("Found form {0} with value {1}", t.Name, value); } } } Output is: Found form Form2 with value nobugz Use the string constant(s) to initialize your menu. Store the Type instance too, you'll need it later to create the form with Activator.CreateInstance(). If the forms are defined in a different assembly, you'll need to iterate through the assemblies returned by AppDomain.GetAssemblies. If those assemblies aren't loaded yet, you'll need to figure out a way to get them loaded before executing this code with AppDomain.LoadAssembly(). Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - updating window in multithreaded app okay im making a mesh viewer for my engine in c#. Now my engine runs in a window, parented to a window in my c# application. My engine runs in its own thread started by my c# application. When i've finished rendering i tell opengl to swap buffers, which would normally display the contents to window, however in my c# appliation it does not update the window. How ever, if i put a call to my engine's render function in the windows paint method, it will be displayed, but only when i resize the window. Any ideas how to get the window updated each frame in my seperate engine thread edit: okay i made some progress, i now open a thread which invalidates the window then sleeps for 20ms. This seems to work nicely. Is it the best way to go about it Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Leading And Kerning of the Text Hi Oleh, Thank you Very much,If u Dont mind,will u please send some Examples in c#. My Mail id is : vijay.bhaskar@greypad.com , Thanks and regards, Vijay. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - ComboBoxes again Hi, actually " this .comboBox1.SelectedText" gets the current highlighted text inside the combobox I suppose " this .comboBox1.Text " is the one that you were looking for Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Uninstallation program Is there any way to include an uninstallation program with my setup files, and if so; how Thanks in advance Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Determining when a bound business objects, or any of its children, have changed I have one main business object in an application, which is a container for various other business objects, themselves container other business objects. It is bound throughout various aspects of the user interface using a BindingSource and its Current property. The object can then be "processed" so to speak, any number of times. I would like to be able to tell if the object has changed in between successive processes. I have looked at these various options: 1. Since all my business objects implement INotifyPropertyChanged, I added a dirty flag in each object that gets set when a property changes. The problem is I have no way for this to be reflected to the parent object, and eventually my main object. 2. Event handlers for BindingSource::CurrentItemChanged. However this only detects changes based on the CurrentChanged event or when properties of the CurrentItem change, so it won't detect changes to child objects. 3. CurrencyManager::ItemChanged event. Get the CurrencyManager via the BindingContext for my BindingSource and attach handlers for the ItemChanged event. Again it seems to only detect changes to the parent object and not children. Anjo Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - how to trigger BindingCompleteState.DataError Hello, the BindingCompleteState that comes with a BindingComplete event has three possible values: Success, Exception, and DataError. The former two are quite clear. However, I have no clue under which circumstances the latter - DataError - could occur. If there is any chance to make use of it in the context of validation and data binding, particularly to custom object datasources, I would be very happy to learn how. Regards, Matthias Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Coloring TabControl. nahguam wrote: Yes, I have tried it and it did compile and the statement remained. Compiling should not actually modify anything you've written. It may throw a wobbly but not modify. Trying to find a straw to catch up and hang on: MSDN says that Control Class does not have BackColor property. It is not mentioned at all, however the TabControl Class does, it is overridden, but it "has no meaning" in TabControl. Sounds funny. Why did they even menton it at all. Building a CustomUserControl might be a tall order for me since I've never done it before. I looked at the class description. They give a simplistic example of putting together a few texboxes and labels. I do not know how I can take it from there. Thanks. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - BindingNavigator disappears from Container UserControl at Design Time Hi, I have made a Container UserControl (with "ParentControlDesigner" attribute "trick") with a BindingNavigator inside it (when the UserControl is dropped over a form, the BindingNavigator appears semi-transparent). When I put that usercontrol on a form and drop some controls inside it, it shows properly. After the first run, the BindingNavigator control disappears from the UserControl at Design Time. Only the dropped controls are shown. The BindingNavigator reappears if I close de form designer e reopen it. Anyone have any idea how to solve this problem I'm using Visual Studo 2005 with C# Thank you Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - How do I choose an event from a control using the designer (c#) Yes I am using the .NET Framework 3.0 extensions. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - How to avoid loops with handlers? Thx, for your reply. Indeed with #C it works. It does not work in vb.net, I cannot pinpoint the difference. Can you explain how the logic works And why there's no circulair update Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - is there a control to, create/edit/view reports? VS 2005 Standard edition or Express does not come with Crystal Reports (as far as I know). VS 2003 did come with Crystal Reports .Net. We are now switching from CR to Reporting Services. I am not sure if CR can read RDL. That is a good question. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Image on top of all windows Just put a PictureBox, Dock=Fill, inside a borderless form. Set the form's TopMost property to True. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Add check box to Binding Navigator control? Hi,Job To use this Custom CheckBoxStripItem at design time,you can take the following steps: 1. using the Design namespace as: using System.Windows.Forms.Design; 2. Add the following code in front of the CheckBoxStripItem: [ ToolStripItemDesignerAvailability ( ToolStripItemDesignerAvailability .ToolStrip | ToolStripItemDesignerAvailability .StatusStrip)] class CheckTextBoxToolStripItem : ToolStripControlHost { //see codes in my last post. } 3. Rebuild your project,.then switch to design mode, when the click on the smart tag on the BindingNavigator, you will see this custom ToolStripItem is added to the list. Hope it helps. Best Regards. Ye Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Need Help With SendKey Function Hi All, I am a new Visual Studios user and new C# programmer. Currently I am trying to figure out a way to automate a program install (hitting Next buttons, and then Finish basically) by the way of SendKeys, but I am running into problems. Right the program brings the install window to the foreground and sometimes sends the Enter key correctly. Not really sure why it only works sometimes, other times it does nothing. The big problem is that after the Enter key is sent it moves onto the next part of the installation, and none of my further keys get sent correctly. I thought it was a timing problem so I tried to insert a for loop in order to delay the code execution for a bit...didn't work either. Here is my code so far: Code Snippet using System; using System.Runtime.InteropServices; using System.Drawing; using System.Windows.Forms; namespace SimulateKeyPress { class Form1 : Form { private Button button1 = new Button (); [ STAThread ] public static void Main() { Application .EnableVisualStyles(); Application .Run( new Form1 ()); } public Form1() { button1.Location = new Point (10, 10); button1.TabIndex = 0; button1.Text = "Click to Automate Install" ; button1.AutoSize = true ; button1.Click += new EventHandler (button1_Click); this .DoubleClick += new EventHandler (Form1_DoubleClick); this .Controls.Add(button1); } // Get a handle to an application window. [ DllImport ( "USER32.DLL" )] public static extern IntPtr FindWindow( string lpClassName, string lpWindowName); // Activate an application window. [ DllImport ( "USER32.DLL" )] public static extern bool SetForegroundWindow( IntPtr hWnd); // Send a series of key presses to the Install application. private void button1_Click( object sender, EventArgs e) { // Get a handle to the Install application. The window class // and window name were obtained using the Spy++ tool. IntPtr InstallHandle = FindWindow( "InstallShield_Win" , "CYMDIST 4.5 Rev 15" ); // Verify that Calculator is a running process. if (InstallHandle == IntPtr .Zero) { MessageBox .Show( "Calculator is not running." ); return ; } //SetForegroundWindow(InstallHandle); IntPtr InstallHandle2 = FindWindow( "#32770" , "CYMDIST 4.5 Rev 15" ); // Make Install the foreground application and send it // a set of instructions. SetForegroundWindow(InstallHandle2); //SendKeys.SendWait("{TAB}"); SendKeys .SendWait( "~" ); for ( int i = 0; i == 100000000; i++); SendKeys .SendWait( "~" ); SendKeys.SendWait("~"); } // Send a key to the button when the user double-clicks anywhere // on the form. private void Form1_DoubleClick( object sender, EventArgs e) { // Send the enter key to the button, which raises the click // event for the button. This works because the tab stop of // the button is 0. SendKeys .Send( "{ENTER}" ); } } } Any help is appreciated. Thanks! Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Tapping the Enter Key VB is not good with type casts, so try using the conversion class. if e.KeyChar = Convert.ToChar(Keys.Enter) Then btnSave.Focus() End If Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Text Box Entry Finished Although this isn't full proof. The user can be done typing but still leave focus to the textbox. As said in a previous post, the only true way is if you have a character limit (which is still not full proof). Maybe make a button that the user must click when they are done typing, just a suggestion. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - using me.validate Hi Luc, Thanks for your help. Well if you can imagine a databound form with 10 fields. The Database will not allow a null value for the Name and Phone number field needs to be correctly formatted but the others can have pretty much anything. When someone creates a new record, but doesnt fill in the name field before saving the record, the event fails with a "database doesnt accept nulls" sort of error. I want to check the hame field has something in it and the phone field has the right entry, showing a response to the user using the ErrorResponse (cant remember it's proper name) control, when the user navigates away from the current form. Many thanks John Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Problem with ToolStripDropDown in DataGridViewCell Here is no way to disable a ComboBox while retaining the color of the textarea and the dropdown button. But we can use owner draw to solve the problem. 1:Change combox DrawMode property 2:Handle MeasureItem and DrawItem events, and the ItemHeight property You can refer MSDN Library topic: http://msdn2.microsoft.com/en-us/library/system.windows.forms.combobox.measureitem.aspx Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - DataSet with internal visibility When creating a typed DataSet using the VS2005 designer is it possible to specify that the generated DataSet classes should have internal visibility Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - DotNetrix question HI Alex, You'd be better off contacting me via the Contact link on my site, I respond much quicker to email as I check them more often. I don't use Vista as VS2003 is not supported. I don't use VS2005 because it doesn't handle custom collections or custom typeconverters very well. By this I mean that when building custom Controls, if the control has either of these then the Control will fail in the IDE after every rebuild (Have a look at the SelectedPanel property in PanelManager or look around for the various reports of "object of type xtype cannot be converted to object of type xtype"). These issues do not arise in a compiled dll, but if you add the source to an existing solution then you will see them all the time. I do have the express versions of VB2005 and C#2005 installed, but don't use them unless I have no custom typeconverters in my project, which is very rare since I basically just write custom controls. Since I'm not using Vista, the following assumptions may be incorrect. TabControlEx is a Framework 1.1 Control. Although it works just fine in VS2005, there were some changes made to the System.Windows.Forms.TabControl in Framework 2.0 which directly affect it. The main problem that you seem to be encountering is that the Framework 2.0 TabPage will automatically set the TabPages new UseVisualStyleBackColor property to true when Appearance is Normal. What this does is set the TabPage BackColor to Transparent. A much better solution would have been to Draw the Visual Style Texture, but I have no control over what MS does. You should reset this property to it's default in order for the texture to be drawn by TabPageEx. The Issue of oversized tabs is caused by the System.Windows.Forms.TabControl not recieving WM_FONTCHANGE messages. This is due to the control being ownerdraw. I believe that this behavior is deliberate as there are no native methods in the Win32 TabControl to modify the size of an individual tab. Since the control uses GDI to measure the tab text, a GDI+ rendered string will not always fit into the same area. We can post the missing messages, but we must use GDI to draw the tab text rather than GDI+. This is fine for top and bottom aligned tabs, but becomes a major headache when we need to rotate the text for vertical tabs. Due to the way in which TabControlEx is written, it is not so easy to correct these issues (it was not originally intended to be the control that it has become). I am currently working on a Framework 2.0 subclass of TabControl and am hoping to have it finished soon. This will correct the tabsize issues seen in TabControlEx. The DrawMode property will also be restored. It will primarily only support the 3 standard appearances (although slightly modified), but will correct Visual Styles for alignments other than top as well as keep Visual styles when Drawmode is set to OwnerDrawFixed. It will also support Disabled Tabs and M nemonics which is the main reason for it to exist in the first place. It may be further enhanced in the future, but for now I'll just keep it simple, although if you saw how much work was involved you might not agree that it's simple . Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - how to save the content of richTextBox as jpg file? Hey, timvw, I figure it out, that method is not visible from the editor, however we can use it according to the reference. Thanks for the web page that you provided. I read it before, but didn't understand it so well. I update the code a little bit, since it is required to define the rectangle(). Bitmap _bitmap = new Bitmap(this.richTextBox.Width, this.richTextBox.Height); this.richTextBox.DrawToBitmap(_bitmap, new Rectangle(0, 0, this.richTextBox.Width, this.richTextBox.Height)); _bitmap.Save(_dlgsave.FileName, ImageFormat.Jpeg); However, I got one jpg file with totally black, i.e. there is nothing except for black. Does it the complier error you mentioned Thanks for your comments! B.W B-D Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - DataGridView - Column/Cell Not Selectable Hi: we can use selected=false to deselect the cell in GDV as: private void dataGridView1_CellBeginEdit( object sender, DataGridViewCellCancelEventArgs e) { if ((( DataGridView )sender).CurrentCell.ColumnIndex == 1) e.Cancel = true ; } private void dataGridView1_CellEnter( object sender, DataGridViewCellEventArgs e) { if ( this .dataGridView1.CurrentCell.ColumnIndex==1) this .dataGridView1.CurrentCell.Selected = false ; } but if you want to cancel the tab key, maybe we need overried the class method as follow public class myDgv : DataGridView { protected override void OnKeyDown( KeyEventArgs e) { if ( this .CurrentRow.Index == 0) { if (e.KeyCode == Keys .Tab) { return ; } } base .OnKeyDown(e); } } Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Email validation control or code for VB.Net 2005. Hi I tried to use following code - Imports System.Text.RegularExpressions In one of my functions- If txtEmail_1.Text <> "" Then Dim rex As Match = Regex.Match(Trim(txtEmail_1.Text), "[a-z0-9._]*@[a-z0-9_]*(\.[a-z0-9_]{2,4}){4}" , RegexOptions.IgnoreCase) If rex.Success = False Then MessageBox.Show( "Please Enter a valid Email-Address 1" , "Information" , MessageBoxButtons.OK, MessageBoxIcon.Information) txtEmail_1.Focus() Exit Function End If End If But it is always giving rex.success as false. I entered correct email also still it is false. Please tell me whether the compare condition is correct or not Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - round buttons Hello i have made my one version off the musicplayer butt i don't like the way it looks for now. Different colors is nice butt i want different buttons like round ones or triangle ones i already try the codes i can find butt always erors is it because i am ussing VISTA or something else i don't no inheritance properties am not so good. can't find video to see and learn like with SQL Sever video works better than most text (seeing better than reading) i use VB 2005 Express Edition + updates butt all the codes are not working drives me grazy help me. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Memory Leak using FlowLayoutPanel? I have a problem with a possible memory leak in my WinForms app. I finally was able to figure this out and reproduce by doing the floowing. Add a FlowLayoutPanel to a form and have a process that adds (multiple) Buttons at runtime. Then i have a method that is called from an event (button click) that removes the controls like this: Code Snippet Me.FlowLayoutPanel1.Controls.Clear() then call the method to re-add them back using: Code Snippet Me.FlowLayoutPanel1.Controls.Add(New Button...) This works except for the Mem Usage on the machine. This goes thru the roof after loading 30 controls over and over again. I have tried all of the following without luck: Code Snippet For Each ctrl As Control In Me.FlowLayoutPanel1.Controls ctrl.Dispose() ctrl = Nothing Next GC.Collect() Me.FlowLayoutPanel1.Controls.Clear() Any ideas Thanks in advanced. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Form doesnt return after ShowDialog when runs standalone. C# 2.0 If I run app from IDE it works fine. When I run it standalone from command string one particular dialog window hangs on 2nd (sometime 3d) time you closing it. The sequence of events I could manage to trace so far: - when it is OK a. Cancel button clicked event b. form Closed event c. form HandleDestroyed event d. ShowDialog returns to the parent e. form Disposed method called - when it hangs a. Cancel button clicked event b. form Closed event -- here it hangs -- any idea will be appreciated (either solution or direction how to dig further as I am out of ideas). Thank you Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Getting string from Text Box the code is in the form. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms
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    - Form closing preventing Your form closing code should never be in any event other than the Form_Closing or Form_Closed event. Otherwise your closing code will never be executed if the application is closed indirectly, such as through Task Manager or Windows shutting down. The first thing to do is to put or call your closing code only from one of these events. In both you can use e.CloseReason to determine where the close message came from and in Form_Closing you can use e.Cancel = True to prevent the form from closing. Tag: Windows Forms Designer DataGridView visual inheritance Windows Forms

PL01

Hi,

can I visually inherit DataGridView, as described in:

http://msdn2.microsoft.com/en-us/library/aa288147(vs.71).aspx

I have a custom form with some controls (including DataGridView) which I would like to inherit other forms from.

My aim is to have the ability to change DataGridView (DGV) properties like columns, databinding, etc. on derived form.

Even when set DGV Modifiers to Protected, the Dgv is locked on derived form and I cannot change any of it's properties. It will work with other controls, with DGV will not.

Or am I missing something

Please help.

Re: Windows Forms Designer DataGridView visual inheritance

PL01

Hi,

I do not know why this answer cannot be seen in the forums, so copy-paste it from e-mail notification, because I find it helpful.

Thanks Rong-Chun Zhang !

Re: DataGridView visual inheritance
Posted by Rong-Chun Zhang - MSFT in Windows Forms Designer

HI PL01,

It is because that the derived form cannot get access to the columns which have been added to the DataGridView. The columns are still private though you have set the DataGridView's modifiers to protected. If you leave the DataGridVIew's columns blank in the parent Form or modify them to protected or public, you can edit it in derived form.

Hope this helps.

Regards

Re: Windows Forms Designer DataGridView visual inheritance

Rong-Chun Zhang - MSFT

Hi PL01,

I test it, it does not solve the problem on my machine, so I delete it. Thanks.

With regards

Re: Windows Forms Designer DataGridView visual inheritance

Rong-Chun Zhang - MSFT

Hi PL01,

This is a known issue about DataGridView. Check the following page.

https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx FeedbackID=284335&wa=wsignin1.0

Also, these is a workaround on the page, you can give it a try.

With regards.