"Application settings" versus "Isolated Storage"

Windows Forms General

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    - DataGridView - Column/Cell Not Selectable Hi, I have a DataGridView with 5 columns but only want the user to be able to select cells in one column (prevent selection of the other cells) I have tried to find a property for a column to say you can't select it, but can't find anything. Surely you don't have to write a whole bunch of event handlers (cellclick, keydown, etc) and dynamically change the focus to the one columns cell you allow to select. Can anyone help me with this - even microsoft access has the ability to not allow selection of a particular column cell. Thanks in advance, Grant. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Email validation control or code for VB.Net 2005. I am developing a windows application using VB.Net 2005. One of my forms contains a textbox for entering email id. I want to validate its patterns i.e. It should have @, atleast one ".", etc. In asp.net we have validation control for this. But how to do it in VB.Net 2005. Tag: Windows Forms General "Application settings" versus "Isolated Storage" 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 General "Application settings" versus "Isolated Storage" 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 General "Application settings" versus "Isolated Storage" 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 General "Application settings" versus "Isolated Storage" Windows Forms
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    - Getting string from Text Box Hi, I have some code I'm updating from VB6 to VB .NET and am having an annoying problem. I'm trying to assign a public variable to a string coming from a text box. The first time through the sub there is no problem but when the sub is called again the variable is assign a zero length string, even though there is still text in the text box. I can get the correct string if I assign an intermediate variable in another sub then assing that to the first variable but this hardly seems efficient. Any ideas why this may be happening Thanks! Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Form closing preventing How can I prevent an user to close the form clicking on the (X) button Thnx! Kapalic Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - At runtime, what else controls windows controls' size/proportion besides windows' resolution? Hi, We have a Win form app written in VB.Net. One of the issues we have now is that the size/proportion of the win controls differ from workstation to workstation and that is NOT because of the windows resolution! (all the workstations have the same 1024x768 resolution). As result of this, about 70 percent of our workstations display the controls the way we want, but the rest 30 percent display smaller forms relative to the available spaces on the window. This makes some of our controls not functioning correctly. One example would be that we have a one-charactor field which works fine on those 70 percent workstations. But on those 30 percent machines, it becomes too small to hold the charactor typed in and therefore it always appear to be blank - even if there is a charactor in it! I tried everthing I can to track this down but am still out of luck so far. Like I said, it is not the resolution, not the widnow's font, not the operting system. What else could this be If anyone could shed some light on this one, it would be highly appreciated! Thanks in advance! Feng Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - how to disable row select in datagridview? how can disable the row select in the datagrid to prevent user from highlighting a row Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - multiple c# winforms I have two winforms one is parent form and other will open when user click button which place in parent form. I want when child form get display,parent form get close.means on that button event i want to close parent form and open child form... plz help me Thanks, Chetan S. Raut. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Capture keystrokes inside a UserControl Hi, I'm about to implement a UserControl that has several other controls inside. As soon as a control inside the my containing UserControl I want to react on keystrokes (like Ctrl+A to select all controls inside). How can this be accomplished Thanks in advance! Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Autocomplete in a combobox of a DataGridview As I can make a autocomplete in a combobox of a DataGridview. I observed that in the properties of the compo of the combobox has an AutoComplete = True, more no he/she works as of the combobox of the form that has the options autocompletemode = SuggestAppend and AutoCompleteSource = ListItems. and I don't Also get to type other thing not to be it that this in the box of listing of the combo of the same gridview changing the property DisplayStyle of Combobox for DropDownButton and also in the way as it is only research for the first letter of the box of listing of the combo of the datagridview. thank you at once. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - DownScope control on form Let me preface this by saying that I know downscoping is a bad thing to do in C# or any OO language, but here's the issue: We have a number of ComboBox controls on a form that get dynamically loaded. We've run into issues where the list has 65,000 entries and it takes to long so we change the DropDownStyle to Simple (essentially creating a textbox) and use a lookup mechanism in our application framework. The issue is that our developers have wired up to the SelectedIndexChanged event, and that no longer fires. So I'm wondering if we can have one of two solutions: 1. Transfer all the events from one event to another (SelectedIndexChanged to TextChanged) 2. Create an Inherited type like ComboLookupControl:ComboBox and attempt a downscope cast where the inherited class re-directs the events. The biggest challenge is that the combo can't be removed and re-created and I'm having casting issues (as expected) with solution #2. Does anyone have any other ideas or a method for successfully doing the items above Thanks, -Dan Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - start up logIn from then start up form windows I have problem with login form starta up and then after Buttn click do form start up Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Creating my own TabPage class I have a tabcontrol on a form. If I add tab pages and add controls to them in Visual Studio the controls become members of the main form and the main form will also handle all events from all controls on all tab pages. I want to create my own TabPage class that handles everything that happens in the TabPage to avoid having all code in the main form. I created MyTabPage class by adding a new Component to the project and changing the base class to TabPage. I am able to drag stuff from the Toolbox onto my TabPage in Design mode. In the designer for the main form I added another tab page to the tab control and changed the type from TabPage to MyTabpage in the main form code. However, I am not able to see any controls in the tab when I launch the application. If I set a background image it is shown, though. How am I supposed to handle the controls to make them visible There seems to be no design possibilities for MyTabPage other than dragging stuff from the toolbox. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Querying Errorprovider Hi all, Does anybody know if I can query errorprovider / control to check if it has an error So, if I set error on myControl like so: _errorProvider.SetError(myControl, errorMessage); Can I programmatically determine if myControl has an error associated with it Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - How Can I handle Mouse events over a Form with Trancperancy Key ? Hi : I had a Form and I put the property Transparency Key to "Control" so some of the form will be hidden .... but I still want to handle User Mouse Clicks on the hidden part of the form ... How Can I thanks ... Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Print Preview button on Print dialog box Hi, My application requirement is that I need a print preview button on my standard Print dialog box in C#.Net. (Which it does not have by default). Can I do that How regards, krunal Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - List box - flickering problem Hi, I'm using the listbox control to display colored messages. for that purpose i set DrawMode to be DrawMode . OwnerDrawFixed and added a listener for Draw item event as following: Code Snippet private void lbxLog_DrawItem ( object sender , DrawItemEventArgs e ) { if ( e . Index < 0) { return ; } string displayedItem = lbxLog . Items [ e . Index ]. ToString (); // If the string is larger than the largest string set extent property if ( displayedItem . Length > m_MaxDisplayedItemLength ) { m_MaxDisplayedItemLength = displayedItem . Length ; // Determine the size for HorizontalExtent using the MeasureString method . int hzSize = ( int ) lbxLog . CreateGraphics (). MeasureString ( displayedItem , lbxLog . Font ). Width + 5; // Set the HorizontalExtent property. lbxLog . HorizontalExtent = hzSize ; } // Draw the background of the ListBox control for each item. e . DrawBackground (); // Define the default color of the brush as black. SolidBrush myBrush = new SolidBrush ( Color . Black ); // Determine the color of the brush to draw each item based on the index of the item to draw. myBrush . Color = m_ColorManager . GetColor (e.Index ); // Draw the current item text based on the current Font and the custom brush settings. e . Graphics . DrawString ( displayedItem , e . Font , myBrush , e . Bounds , StringFormat . GenericDefault ); // If the ListBox has focus, draw a focus rectangle around the selected item. e . DrawFocusRectangle (); } Generraly it works fine, the only problem is that in hight message rate the control is flickering. I set a double buffered property of parent form but it doesn't help at all. Any idea how to solve this problem Thanks Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Hai friends...I have user controls on panel. I have to delete those controls using ToolStripMenuItem, named, "delete" Hai my dear friends, I have different usercontrols on panel. I have defined context menu for Panel which contains user controls. so dat i can delete variety of different user controls by using the same menuitem. I am unable to recognize those controls n deleting by using my toolstripmenuitem from the panel. Plz provide me with good soln to my issue. //Form1.Designer.cs It consists of 2 panels and 2 buttons, named, panel1, panel2, button1, button2. I have written code for button1 which resides on panel1 to do drag and drop onto panel2. // Form1.cs using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D; namespace DragingButton { public partial class Form1 : Form { public Form1() { InitializeComponent(); } int i = 1; bool Dragging; int mousex; int mousey; private void button1_MouseDown( object sender, System.Windows.Forms. MouseEventArgs e) { if (e.Button == MouseButtons .Left) { //button1.SelectAll(); //panel2.Capture = false; button1.DoDragDrop(button1.Text, DragDropEffects .Move | DragDropEffects .Copy); } } private void panel2_DragEnter( object sender, System.Windows.Forms. DragEventArgs e) { if (e.Data.GetDataPresent( DataFormats .Text)) { //If CTRL was pressed to a copy else move if ((e.KeyState & 8) == 8) { e.Effect = DragDropEffects .Copy; } else { e.Effect = DragDropEffects .Move; } } else { e.Effect = DragDropEffects .None; } } private void panel2_DragDrop( object sender, System.Windows.Forms. DragEventArgs e) { float dropX = e.X; float dropY = e.Y; Point dropLocation = new Point (( int )dropX, ( int )dropY); Point dropPoint = new Point (); dropPoint = panel2.PointToClient(dropLocation); // MessageBox.Show(dropPoint.ToString()); UserDef. UC SelButton = new UserDef. UC (); this .SuspendLayout(); SelButton.textBox1.Text = "UserControl" + i; SelButton.BackColor = Color .Gray; SelButton.Location = dropPoint; //Button str = Convert.ToString(SelButton.Name); //str.AllowDrop = false panel2.Controls.Add(SelButton); //SelButton.Location = new Point(cursorPosition.X-230, cursorPosition.Y-33); //panel2.Controls.Add(SelButton); panel2.ResumeLayout( false ); i++; SelButton.MouseDown += new MouseEventHandler (selectMouseDown); SelButton.MouseMove += new MouseEventHandler (selectMouseMove); SelButton.MouseUp += new MouseEventHandler (selectMouseUp); } private void button2_Click( object sender, EventArgs e) { Button SelButton = new Button (); SelButton.Text = "Query" + i; SelButton.Name = "QuerySelect" + i; SelButton.BackColor = Color .Red; Point cursorPosition = Control .MousePosition; SelButton.Location = new Point (cursorPosition.X,cursorPosition.Y); panel2.Controls.Add(SelButton); i++; } private void Form1_Load( object sender, EventArgs e) { //foreach (Control ctrl in panel2.Controls) //{ // ((Control)ctrl).Click += new EventHandler(displayControl); //} //foreach (Control ctrl in panel1.Controls) //{ // ((Control)ctrl).Click += new EventHandler(displayControl); //} //foreach (Control ctrl in this.Controls) //{ // ((Control)ctrl).Click += new EventHandler(displayControl); //} foreach ( Control ctrl in panel2.Controls) { Control ctr = ( Control )ctrl; ctr.MouseDown += new MouseEventHandler (selectMouseDown); ctr.MouseMove += new MouseEventHandler (selectMouseMove); ctr.MouseUp += new MouseEventHandler (selectMouseUp); } } void displayControl( object sender, EventArgs e) { MessageBox .Show( "controls are" + sender.ToString()); } private void textBox1_MouseDown( object sender, MouseEventArgs e) { if (e.Button == MouseButtons .Left) { Dragging = true ; mousex = -e.X; mousey = -e.Y; int clipleft = this .PointToClient(MousePosition).X - textBox1.Location.X; int cliptop = this .PointToClient(MousePosition).Y - textBox1.Location.Y; int clipwidth = this .ClientSize.Width - (textBox1.Width - clipleft); int clipheight = this .ClientSize.Height - (textBox1.Height - cliptop); Cursor .Clip = this .RectangleToScreen( new Rectangle (clipleft, cliptop, clipwidth, clipheight)); textBox1.Invalidate(); } } private void textBox1_MouseMove( object sender, MouseEventArgs e) { if (Dragging) { Point MPosition = new Point (); MPosition = this .PointToClient(MousePosition); MPosition.Offset(mousex, mousey); textBox1.Location = MPosition; } } private void panel2_Paint( object sender, PaintEventArgs e) { } bool flag = false ; Point p; private void selectMouseDown( object sender, MouseEventArgs e) { if (flag == false ) { flag = true ; p = MousePosition; } } private void selectMouseUp( object sender, MouseEventArgs e) { if (flag) { flag = false ; } } private void selectMouseMove( object sender, MouseEventArgs e) { if (flag) { Control ct = ( Control )sender; ct.Left += MousePosition.X - p.X; ct.Top += MousePosition.Y - p.Y; p.X = MousePosition.X; p.Y = MousePosition.Y; } } } } // UC.cs using System.Diagnostics; using System; using System.Windows.Forms; using System.Collections; using System.Drawing; using Microsoft.VisualBasic; using System.Data; using System.Collections.Generic; using System.ComponentModel; namespace UserDef { public partial class UC : UserControl { #region "Declarations" private Guid mUniqueID; internal TextBox textBox1; private TextBox textBox2; private Label label1; private Point mLocation; #endregion public UC() { InitializeComponent(); Guid newGuid = Guid .NewGuid(); this .mUniqueID = newGuid; } public UC( Guid theId, Point theLocation) { InitializeComponent(); mUniqueID = theId; this .Location = theLocation; } #region "Properties" public Guid ID { get { return mUniqueID; } } private void InitializeComponent() { this .textBox1 = new System.Windows.Forms. TextBox (); this .textBox2 = new System.Windows.Forms. TextBox (); this .label1 = new System.Windows.Forms. Label (); this .SuspendLayout(); // // textBox1 // this .textBox1.Location = new System.Drawing. Point (15, 12); this .textBox1.Name = "textBox1" ; this .textBox1.Size = new System.Drawing. Size (100, 20); this .textBox1.TabIndex = 0; // // textBox2 // this .textBox2.Location = new System.Drawing. Point (15, 66); this .textBox2.Name = "textBox2" ; this .textBox2.Size = new System.Drawing. Size (100, 20); this .textBox2.TabIndex = 1; // // label1 // this .label1.AutoSize = true ; this .label1.Location = new System.Drawing. Point (49, 44); this .label1.Name = "label1" ; this .label1.Size = new System.Drawing. Size (62, 13); this .label1.TabIndex = 2; this .label1.Text = "UserControl" ; // // Query // this .Controls.Add( this .label1); this .Controls.Add( this .textBox2); this .Controls.Add( this .textBox1); this .Name = "Query" ; this .Size = new System.Drawing. Size (134, 94); this .ResumeLayout( false ); this .PerformLayout(); } //public Point MyLocation //{ // get // { // return mLocation; // } // set // { // mLocation = value; // } //} #endregion } } // USerControl1.Designer.cs namespace DragingButton { partial class UserControl1 { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel. IContainer components = null ; /// <summary> /// Clean up any resources being used. /// </summary> /// <param name="disposing"> true if managed resources should be disposed; otherwise, false. </param> protected override void Dispose( bool disposing) { if (disposing && (components != null )) { components.Dispose(); } base .Dispose(disposing); } #region Component Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this .textBox1 = new System.Windows.Forms. TextBox (); this .textBox2 = new System.Windows.Forms. TextBox (); this .listBox1 = new System.Windows.Forms. ListBox (); this .SuspendLayout(); // // textBox1 // this .textBox1.Location = new System.Drawing. Point (31, 42); this .textBox1.Name = "textBox1" ; this .textBox1.Size = new System.Drawing. Size (24, 20); this .textBox1.TabIndex = 0; // // textBox2 // this .textBox2.Location = new System.Drawing. Point (34, 6); this .textBox2.Name = "textBox2" ; this .textBox2.Size = new System.Drawing. Size (21, 20); this .textBox2.TabIndex = 1; // // listBox1 // this .listBox1.FormattingEnabled = true ; this .listBox1.Location = new System.Drawing. Point (61, 6); this .listBox1.Name = "listBox1" ; this .listBox1.Size = new System.Drawing. Size (69, 56); this .listBox1.TabIndex = 3; // // UserControl1 // this .AutoScaleDimensions = new System.Drawing. SizeF (6F, 13F); this .AutoScaleMode = System.Windows.Forms. AutoScaleMode .Font; this .Controls.Add( this .listBox1); this .Controls.Add( this .textBox2); this .Controls.Add( this .textBox1); this .Name = "UserControl1" ; this .Size = new System.Drawing. Size (149, 89); this .ResumeLayout( false ); this .PerformLayout(); } #endregion private System.Windows.Forms. TextBox textBox1; private System.Windows.Forms. TextBox textBox2; private System.Windows.Forms. ListBox listBox1; } } Prem boyapati hyd. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Starting at "My Documents" in FolderBrowserDialog I'm presenting the user with a FolderBrowserDialog, and I'd like the initial SelectedPath to show up as "My Documents". In my case, "My Documents" maps to a folder on a server. The FolderBrowserDialog correctly shows the location of the folder on the server, but I'd rather the user not see My Network Places\Entire network\Microsoft Windows Network\MyNetwork\MyServer\Users\Dave\My Documents as the starting point in the tree. Is there a way to pass SpecialFolder.Personal (or something similar) to the FolderBrowserDialog so that the user sees the simple and familiar My Documents as the starting point in the tree Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Funky text / polygon-shaped text Hey All, I would like to create a very psicodelic screen saver for my computer. This screen saver will display a string and it will shape the string to a randomly generated polygon, like this: EEE L H H E L L OO HHH EE L L O O H H E L L O O EEE L L L OO LLL LLLL H H L O H H L L O O HHHH EEE L L O O H H Ee L L O O H H EEE L LLL O LLLL So basically "hello" pulled and pushed in all directions. (For those who have watched Futurama and know who Hypnotoad is, the effect I want to achieve is the same as its eyes) I am right now looking at Graphics.Transform but I am lost there. Your help will be appreciated. Cheers, Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Strings with bounded value in a textbox. (To recipient box in Outlook Mail) Can you please help me to find a textbox control which support strings with bounded values; For example Name1 ; Name2 ; Name3 (Content in the text box ) and each name is bounded with a value. Something like To recipient box in Outlook Mail Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - How to change the selected rowIndex of DataGridView How to change the selected rowIndex to an already selected row i.e. if we have selected 5 rows with ctrl key & the row index is pointing to the 5th row. Now i want to point to the first row that has been already selected whie clicking on the 1st row, the rowindex is showing to that of the 5th one instead of 1st row that we are clicking on. But it is changing for another clicking on the 1st row,why not on the first click With regards Tapan Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Input Method Editor (IME) Isn't Working! I'm trying to support multi-language input in my game. The game does not use any controls other than its own form. How can I invoke an IME dialog to pop-up when the user enters a character Inaddition, is it an IME dialog that I want to use -- as a I believe a mod here said that IME will not work on the Japanese version of Vista. If this is true, what should I be using instead Text Services Framework Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - How to allow resizing in one direction only? Hi, I have created a Line control (in C#) that draws a line on a Form. (Almost like in good old VB6...) It can be set to orient the line horizontally, vertically and in both directions diagonally. When horizontal or vertical, the height/width of the Line control is determined by the line width and should not be allowed to be changed. It's the same as with a TextBox that isn't Multiline. There doesn't even appear a resizing grip at the top/bottom edge and at the corners. How can I do that I tried to override the Size property (for some reason, I can only define a 'new' property with that name), it works for manually entering the Size in the property grid, but not for the interactive form designer. I looked for a SizeChanging or Resizing event, but there is none. I couldn't find anything on the web or in this forum. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - MCTS Moc2547 Application Settings question Hello, Are there some guys that also do study MCTS Moc2547 C# If so: it's about the resource toolkit book C# example code snippet, page 132. can someone tell me where 'Settings' in: public Color BackColor{ get{return (Settings["BackColor"]);} } applies to I get a compile error: 'myApplicationSettingsExperiment02.Settings' is a 'type' but is used like a 'variable' I search/read everything but cannot find it or is it a typo Or what object is ment by 'Settings' regards, Henk Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - getting rid of restore/down? hi, i have a problem, when you look at your form just like on the internet page you have the minimize restore/down and close. now iv set the restore/down to false in the designer properties of the form but im still able in runtime to double click on the top of the blue bar and change the size of the screen, what i dont want, all i want is the minimize and the close form, i dont want the restore/down button (the one in the middle with two boxes). how would i get around this situation many thanx Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Scrollable region I want to create a form that contains a scrollable region that I can make as long as I like and put controls on to display information. Much like a browser grows based on what it contains. The form window itself stays the same but a vertical/horizontal scroll bar open when necessary to provide access to information further down. Can anyone tell me the best way to deal with this situation in Visual Studio 2005 Thanks, glenn Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - Two way databinding doesn't work? Hi guys I have a class which has a Dob (date of birth) property with validation rule (If user select a date early than 1920/01/01, reset the value to 1920/01/01. If user select a date later than .... ) inside it. Then I bind it to a Windows.Forms.DateTimePicker control and found out that the validation rule works but the new value won't be displayed on the DateTimePicker control until I manually call Form.validatechildren or Bindsourse.ResetItem method in Validated event of the DateTimePicker control. What do you guys think By the way, Yes, I do have INotifyPropertyChanged interface in the class and it works very well except the above problem. And also I know I can use the MaxDate/MinDate properties of DateTimePicker control instead of using validation rule inside the class. But in that way, I guess end users will have a little bit of unhappy experience.For example, MaxDate is Jan-01-1980, the current value is Jan-01-1980 and the user want to change it to Feb-01-1960. Clicking on the Jan to change it won't work until 1980 is changed. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - paintbox Hi! I am trying to create a 18x18 map in a paintbox. But what i need is to reach every square individually . s there any way to reach them Can get their adress I want to change color of 324 square dynamically. So creating a square and then coloring them costs me a lot of time. I want to create a 18x18 map and then only changigng their color without drawing a new square. Thanks for your helps! Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms
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    - ClickOnce Deployment Issue - File Has Different Computed Hash Than Specified In Manifest - Urgent! Hello, originally posted this in the VB General forum - didn't get much response, so I thought I would post it here. I'm trying to deploy a ClickOnce Windows app. I have successfully installed it in the past. I made some changes to the .mdf file I have referenced in my application (I made the changes in SQL Server). When I published the app on another machine, I started receiving the error message "File ....mdf, has a different computed hash than specified in manifest". I tried a number of different suggestions that people have made on these forums, but no luck - I tried building the app twice, then deploying; I tried manually updating the revision number; I tried creating a new Test Certificate; I tried signing the assembly; I tried making a change to the .mdf file from within the app, and re-publishing; etc. Can someone please assist We have a client install coming up very soon, so I need to get this resolved as soon as possible. Thanks in advance. PLATFORM VERSION INFO Windows : 5.1.2600.131072 (Win32NT) Common Language Runtime : 2.0.50727.42 System.Deployment.dll : 2.0.50727.42 (RTM.050727-4200) mscorwks.dll : 2.0.50727.42 (RTM.050727-4200) dfdll.dll : 2.0.50727.42 (RTM.050727-4200) dfshim.dll : 2.0.50727.42 (RTM.050727-4200) SOURCES Deployment url : file:///E:/Install/NewDueDiligence.application Application url : file:///E:/Install/NewDueDiligence_1_0_1_78/NewDueDiligence.exe.manifest IDENTITIES Deployment Identity : NewDueDiligence.application, Version=1.0.1.78, Culture=neutral, PublicKeyToken=c153f4632af735c0, processorArchitecture=msil Application Identity : NewDueDiligence.exe, Version=1.0.1.78, Culture=neutral, PublicKeyToken=c153f4632af735c0, processorArchitecture=msil, type=win32 APPLICATION SUMMARY * Installable application. ERROR SUMMARY Below is a summary of the errors, details of these errors are listed later in the log. * Activation of E:\Install\NewDueDiligence.application resulted in exception. Following failure messages were detected: + File, DueDiligence.mdf, has a different computed hash than specified in manifest. COMPONENT STORE TRANSACTION FAILURE SUMMARY No transaction error was detected. WARNINGS There were no warnings during this operation. OPERATION PROGRESS STATUS * [10/23/2006 10:08:58 PM] : Activation of E:\Install\NewDueDiligence.application has started. * [10/23/2006 10:08:59 PM] : Processing of deployment manifest has successfully completed. * [10/23/2006 10:08:59 PM] : Installation of the application has started. * [10/23/2006 10:08:59 PM] : Processing of application manifest has successfully completed. * [10/23/2006 10:09:01 PM] : Request of trust and detection of platform is complete. ERROR DETAILS Following errors were detected during this operation. * [10/23/2006 10:09:07 PM] System.Deployment.Application.InvalidDeploymentException (HashValidation) - File, DueDiligence.mdf, has a different computed hash than specified in manifest. - Source: System.Deployment - Stack trace: at System.Deployment.Application.ComponentVerifier.VerifyFileHash(String filePath, Hash hash) at System.Deployment.Application.ComponentVerifier.VerifyFileHash(String filePath, HashCollection hashCollection) at System.Deployment.Application.ComponentVerifier.FileComponent.Verify() at System.Deployment.Application.ComponentVerifier.VerifyComponents() at System.Deployment.Application.DownloadManager.DownloadDependencies(SubscriptionState subState, AssemblyManifest deployManifest, AssemblyManifest appManifest, Uri sourceUriBase, String targetDirectory, String group, IDownloadNotification notification, DownloadOptions options) at System.Deployment.Application.ApplicationActivator.DownloadApplication(SubscriptionState subState, ActivationDescription actDesc, Int64 transactionId, TempDirectory& downloadTemp) at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState subState, ActivationDescription actDesc) at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut) at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state) COMPONENT STORE TRANSACTION DETAILS No transaction information is available. Tag: Windows Forms General "Application settings" versus "Isolated Storage" Windows Forms

Parker Lewis

Hello everybody

Could someone explain me when you'd typically use the new. .NET 2.0 "Application settings" feature and when you would use the "Isolated storage" Both support a user scope, thus what's the real difference Any links to continuative articles would be appreciated.

Kind regards

Re: Windows Forms General "Application settings" versus "Isolated Storage"

nobugz

Application settings are more geared toward automatic binding of properties to simple preserved values, ones that could also easily be modified by an administrator. They rarely require coding. Isolated storage has none such features but allows you to preserve much more intricate data. Start by using settings, you'll know when you're ready to use IS when you hit a wall.

Re: Windows Forms General "Application settings" versus "Isolated Storage"

Parker Lewis

Ok, I see. Property binding is surely a good cue. Thanks for your answer.

So, if you'd have a logon dialog which typically consists of controls for the user name and the password and maybe a remember logon data checkbox, would you save these properties into the application settings (user scope) Unnecessary to say that the password has to be encrypted.

Or would you go for the isolated storage in this case (password)

Best regards

Re: Windows Forms General "Application settings" versus "Isolated Storage"

nobugz

As a simple string, Setting without a doubt. That's what the IDE does when you use the DataSource wizard (or whatever it is called). Encryption is an entirely different matter, neither a Setting nor IS would give you a ready solution to that one. IS would be just a bit more obscure but just as breakable. A hack0r would need 5 minutes with a setting, less than an hour with Reflector if you use IS. A connection string shouldn't contain any sensitive data, SQL server readily supports that with the Windows Authentication logon option. Post at one of the SQL server forums if you need to find out more.