how to trigger BindingCompleteState.DataError

Windows Forms Data Controls and Databinding

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    - Hiding the UI Hello, I have two modes of running my application, one is UI mode and the other is non UI mode, I have a flag to check whether the operator is in UI or Non- ui mode., In non ui mode i try not to show the UI, private void App_Load(object sender, EventArgs e) { if (!m_fUI) { //In non ui mode check for the Source mode XML or LDAP this.Visible = false; this .WindowState = FormWindowState .Minimized; this .Hide(); this .ShowInTaskbar = false ; } } but as soon as i change the mode the UI goes of and again pops up... Can some pls suggest how to go about Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Setup file. Man Mark my post as Answer and close this thread. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - messagebox.show strange behavior Thanks for your replies, No, it doesnt show at any point in my app. Ive tried a messagebox command on a new test project, and that works fine. Im baffled Regards Chris Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Creating a form with Scroll Bars?? Hello, Fairly new at Windows Forms... I can make forms that contain controls that will fill the form no matter what size it is. Now I need to know how I can create a form that has a predefined window size, but allows the user to scroll down to enter values in the underlying controls. Can anyone guide me through this Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Load MHT files open as stream/string in WebBrowser contol For the "one file" requirement, you probably want to add the mht to your executable as a resource. This can be done by viewing the project's properties on the Resources tab. Click Add Resource, Add Existing File. Choose the file. After doing this, I would recommend changing the FileType on the Properties window to Binary. You could now use System.IO.Path.GetTempFileName and System.IO.File.WriteAllBytes(tempFileName, Properties. Resources .MyResourceName ) to write it to a temporary file. Then use the WebBrowser.Navigate method on that temporary file. If you really do not want to write the temp file, I think the only alternative is to implement a "temporary protocol handler" (i.e., a special prefix such as custom:// instead of http://). This is entirely COM interop and involves the IInternetSession::RegisterNameSpace method. It requires you provide classes implementing the IInternetProtocol and IInternetProtocolRoot interfaces. This may well be too much work for your scenario. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Localization using .resx or Database Hi I am looking in to writing a c# application in .NET 3.0 and localization has been highlighted as an issue. I haven't really written a localized app but I am aware of using resources and dotnets ability to choose the correct localized assembly when required. However, someone has suggested to me they would like to use a database in order to provide the localized strings. My first thought though would have been to use .NET resources. I can see the db approach would be more accessable to someone who didn't have any kind of resx editing tool (if there is such a thing), but I see that there is more to localization than just providing translated strings. Because of these conflicts of interest I wanted to ask everyones opinion: Is there a best practice doc anywhere Has anyone localized an app using a database to provide the string and run in to problems Are there tools out there to allow a non dev to manipulate .resx files when localizing Any finally, the big question would have to be; does the current localization recommendation change if I target WPF Regards Graham Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - populate DataGridView from Stored Procedure ok.. can i ask the question this way.. what is the best way to populate data from SQL Server into DataGrid using Stored Procedure Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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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 Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - text change colour?? Hi,you can try following code Code Block Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If Me.TextBox1.Text = "yes" Then Me.Label1.ForeColor = Color.Blue Me.Label1.Font = New System.Drawing.Font(Label1.Font, FontStyle.Bold) End If End Sub Hope it helps Gavin Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - can't remove or stretch background image in visual basic 6 (sp6) Hi, The simplest way to achieve what you require is the following: Create an 'image' control from the toolbox. The image control allows you to select a picture and then specify "Stretch" to true or false using the properties panel. Lets assume that the 'image' control were named Image1 (by default). It is important to note that the 'image' control is different from the 'picture' control. Double-click your form and select the 'Resize' event and add the following code. Private Sub Form_Resize() Image1.Left = 0 Image1.Top = 0 Image1.Width = ScaleWidth Image1.Height = ScaleHeight End Sub In Visual Basic, ScaleWidth and ScaleHeight represent the dimensions of inside the form itself (i.e. excluding the sizes of the blue caption bar and window frame. This should achieve your requirements. Glad I could be of help! Lea Hayes Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - MDI Client should manually register in menu without beeing instantiated I see what you want to do. While the typical approach to this is to just hardcode the list of available MDI forms, you want a more dynamic approach - you want your program to populate the menu with possible MDI children at runtime. Do I have it about right It sounds to me like what you're looking for is a plugin-based approach, or, if you'll only ever be using the MDI children you build into your own application, you could use Reflection to discover all types in your project's namespace that implement a particular interface or inheritance structure. (of course, that would beg the question - why not just hardcode the list). If you want a plugin-based approach, there are some good articles on TheCodeProject on how to create a plugin system. What are your thoughts on that Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Leading And Kerning of the Text Hi Vijay, You can control both values using Text Object Model .(it's available only for rich text) Leading will be font height + line spacing - it could be set using ITextPara.SetLineSpacing method. Kerning - using ITextFont.SetKerning method. Regards, Oleh. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - ComboBoxes again That depends of how you use the ComboBox control. It can work in connected or disconnected mode. If you set DataSource property, then it work connected, and if you fill it manually, then is working in so called 'disconnected' mode. From this will depend what are you reading, Text in disconnected or SelectedText(i would always use SelectedValue because that is what matters) in connected mode. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Coloring TabControl. 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. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - How do I choose an event from a control using the designer (c#) Are you using the Visual Studio 2005 Extensions for .NET Framework 3.0 Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - How to avoid loops with handlers? Hi Koppen, Try something like this: Code Snippet namespace CBO { public partial class Form4 : Form { public Form4() { InitializeComponent(); } private void Form4_Load( object sender, EventArgs e) { DataTable dt = new DataTable (); dt.Columns.Add( "aa" ); dt.Columns.Add( "bb" ); for ( int i = 0; i < 20; i++) { dt.Rows.Add(i.ToString( "00" ), "bb" + i.ToString( "00" )); } this .comboBox1.DisplayMember = "bb" ; this .comboBox1.ValueMember = "aa" ; this .comboBox1.DataSource = dt; this .comboBox1.SelectedIndex = -1; this .comboBox1.SelectedIndexChanged += new EventHandler (comboBox1_SelectedIndexChanged); this .comboBox2.DisplayMember = "bb" ; this .comboBox2.ValueMember = "aa" ; this .comboBox2.DataSource = dt.Copy(); this .comboBox2.SelectedIndex = -1; this .comboBox2.SelectedIndexChanged += new EventHandler (comboBox2_SelectedIndexChanged); } void comboBox2_SelectedIndexChanged( object sender, EventArgs e) { if ( this .comboBox2.SelectedIndex != -1) this .comboBox1.SelectedIndex = -1; } void comboBox1_SelectedIndexChanged( object sender, EventArgs e) { if ( this .comboBox1.SelectedIndex != -1) this .comboBox2.SelectedIndex = -1; } } } Hope this helps. Regards Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - is there a control to, create/edit/view reports? hi, can crystal reports read and edit RDL files thanks Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Image on top of all windows You have to set the forms TopMost property to true. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - DataGridView visual inheritance 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. Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Add check box to Binding Navigator control? Hi Zhi-Xin Ye - MSFT Thanks for the post and it really helped. Another question though, how can I make use of this custom CheckBoxToolStrip item at design time How can i add custom item to the drop down menu of BindingNavigator Thanks Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Tapping the Enter Key Dave, what will be the vb version of the code I use the following code - If e.KeyChar = Char (Keys.Enter) Then btnSave.Focus() End If and it says - "Char is a type, and can not be used as an expression. Thnx! Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Text Box Entry Finished You can try either LostFocus event or Leave event, Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - using me.validate John, You normally wouldn't have to validate ALL controls, as each control will normally validate itself when losing focus (by default). The only problem remaining is when you have "lite controls", such as the BindingNavigator buttons who, as was explained, don't cause "heavy controls" to lose focus, thus not validating. Unless you have a very specific use case that can't use the standard scenario, I wouldn't worry about it. Maybe you could explain your situation in more details Luc Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - Problem with ToolStripDropDown in DataGridViewCell Yes, you can! The main work steps are 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError 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 Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - DotNetrix question OK, I fixed that. VS2005 had a desktop link and in the property==>Compatibility over there I checked the box "run in 256 colors" for some reason earlier, sort of an idiotic experiment. This is why it would set the whole OS back to stone age. OK, now my first form is back to normal and the second one is back to abnormal . Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms
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    - how to save the content of richTextBox as jpg file? But are you developing Windows Forms http://msdn2.microsoft.com/en-us/library/system.windows.forms.richtextbox.drawtobitmap(VS.80).aspx Tag: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError Windows Forms

Matthias

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

Re: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError

Zhi-Xin Ye - MSFT

The BindingCompleteState.DataError occurs when being able to push the value into the property but the value failed validation.

Re: Windows Forms Data Controls and Databinding how to trigger BindingCompleteState.DataError

Matthias

Thanks for the reply!

However, this reads for me somehow like "... occurs when there is Christmas in July". How can I set up a binding to a datasource (object datasource, if possible by any means) so that setting the property in the model works, but a validation error is reported I mean - Parse can fail only with an exception, the same holds for a TypeConverter, and if I set Cancel=true in the Validating event BindingComplete isn't even called.

Let's have for example a Person object with a property "Age" of type int. How could I bind a text box to Person.Age so that I get BindingCompleteState.DataError whenever I enter a negative integer into the text box There is no problem pushing a negative integer into the Age property, but I don't see where I could implement a validation so that a DataError would be reported.