PropertyGrid

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  - 1
    - datagrid set cell value and move to next cell hello, i created myowndatagrid overriding the method processCmdKey the goal is to set an given value to an cell if the user hits ctrl-enter and move the cursor to the next cell. the problem is that after setting the value and sending the tab-key doesn't move the cursor to the next cell. the cursor is set to the next control on the form. any tips? my code: const int WM_KEYDOWN = 0x100; const int WM_SYSKEYDOWN = 0x104; if((msg.Msg == WM_KEYDOWN) || (msg.Msg == WM_SYSKEYDOWN)) { switch(keyData) { case Keys.Control | Keys.Enter: DataTable table = this.DataSource as DataTable; table.Rows[this.CurrentRowIndex]["myColoumnName"] = "myValue"; SendKeys.Send("{Tab}"); return true; } } thanks, best regards jochen Tag: PropertyGrid Tag: 103913
  - 2
    - Datagridview scrolling bug? due to invisible row's height adjust I have a datagridview, setting its datasource to a dataview which is over an datatable in memory. no filtering rules applied on dataview/datatable. AutoGenerateColumns = false; AllowUserToAddRows = false; EditMode = DataGridViewEditMode.EditProgrammatically; MultiSelect = false; AutoSize = true; SelectionMode = DataGridViewSelectionMode.FullRowSelect; RowHeadersVisible = false; AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCellsExceptHeaders; AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill; ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing; ColumnHeadersDefaultCellStyle.WrapMode = DataGridViewTriState.False; DefaultCellStyle.WrapMode = DataGridViewTriState.True; RowsDefaultCellStyle.WrapMode = DataGridViewTriState.True; The problem is: Assume displaying area can display 10 rows, and I having 30 rows, row 10 has a cell value which is too long and will be wrapped. this row's height will be bigger than normal. I select this row, then scroll further down until this row scroll up till invisible. Now click a button to edit the corresponding value of that cell in the datatable such that it is short and no more wordwrap. Since AutoSizeRowsMode applies to all cells, the row contain that cell will be updated with a smaller height. Then scroll up till top, Exception comes out: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index at System.Collections.ArrayList.get_Item(Int32 index) at System.Windows.Forms.DataGridViewRowCollection.SharedRow(Int32 rowIndex) at System.Windows.Forms.DataGridView.ScrollRowsByHeight(Int32 height) at System.Windows.Forms.DataGridView.set_VerticalOffset(Int32 value) at System.Windows.Forms.DataGridView.DataGridViewVScrolled(Object sender, ScrollEventArgs se) at System.Windows.Forms.ScrollBar.OnScroll(ScrollEventArgs se) at System.Windows.Forms.ScrollBar.DoScroll(ScrollEventType type) at System.Windows.Forms.ScrollBar.WmReflectScroll(Message& m) at System.Windows.Forms.ScrollBar.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) ************** Loaded Assemblies ************** mscorlib Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll ---------------------------------------- .... Now try to resize the datagrid , then this problem disappears. Looks like when a row's height is adjusted while it is not displayed, the scrollbar value is not updated. Feel like a bug. Any idea? Thanks in advance. Tag: PropertyGrid Tag: 103909
  - 3
    - UserControl Docking/Resizing Problems I have a UserControl (size = 800 x 600) that contains a TableLayoutPanel. The TableLayout Panel's Dock property is set to Fill. When I place this UserControl in the left panel of a SplitContainer and set its Dock property to Fill, it takes on the size of the panel (500 x 600), but the TableLayoutPanel remains 800 x 600. If I return to the design tab for the UserControl and change it's size manually to 500 x 600, however, the TableLayoutPanel resizes as expected. Note: I experimented with the AutoSize, AutoSizeMode, and Anchor properties but none of these made any difference. Another Note: If I change the size of the left panel of the SplitContainer to 900 x 600, the TableLayoutPanel *expands* to fill the extra 100 pixels. So, expanding works but shrinking doesn't. And this is true even if I set the AutoSizeMode to GrowAndShrink. Any idea what's going on here? Visual Studio bug or programmer error? :) Thanks, -Dan Tag: PropertyGrid Tag: 103905
  - 4
    - DataGrid Disable Ctr-A Ctrl-A selects all in the System.Windows.Forms.DataGrid. I am trying to disable this functionality and am having a heck of a time. I have a control that inherits from DataGrid I have tried to catch the Ctrl-A in the OnKeyDown and ProcessKeyMessage and it seems that something is getting to it bore I do. I am able to catch it in the OnKeyUp, but by then its too late. How can this be done TIA -- Howard Swope [hswopeATtrafficDOTcom] Software Engineer Media Development Traffic.com [http://www.traffic.com] Tag: PropertyGrid Tag: 103903
  - 5
    - AD Authentication From Windows Forms This is a multi-part message in MIME format. ------=_NextPart_000_0014_01C6C12B.FCE63E60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable If I want to authenticate a user against AD from a WinForms app, how do = I go about it? I want a user to have to re-authenticate after a timeout = period. I will assume the user is the currently logged on user, but I = want to prompt for a password and authenticate them against AD. What's = the best (and secure) way to do this. Thanks. Jerry ------=_NextPart_000_0014_01C6C12B.FCE63E60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.5346.5" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>If I want to authenticate a user = against AD from a=20 WinForms app, how do I go about it?  I want a user to have to=20 re-authenticate after a timeout period.  I will assume the user is = the=20 currently logged on user, but I want to prompt for a password and = authenticate=20 them against AD.  What's the best (and secure) way to do = this. =20 Thanks.</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Jerry</FONT></DIV></BODY></HTML> ------=_NextPart_000_0014_01C6C12B.FCE63E60-- Tag: PropertyGrid Tag: 103897
  - 6
    - form that returns a value what is the best way to call a form from another and then return some value to the original form? Tag: PropertyGrid Tag: 103895
  - 7
    - Combobox autocomplete I'm working with C# in Visual Studio 2005. I have a combobox with AutoCompleteSource = ListItems and DropDownStyle = DropDown. I want users to be able to type in the combobox and the control to autocomplete (Append AutoCompleteMode), but have their options limited to the control's ListItems. Right now the autocomplete works fine, but they can type anything that isn't in the list. Is there an easy way to set the control to do this or am I going to have to write code to verify what was typed during TextUpdate or another event? Tag: PropertyGrid Tag: 103893
  - 8
    - WinForms Drop Down List Hi- Hopefully this is a simple one. I need a "Drop down list" - kind of like a Combo Box but without the ability to type arbitrary text. I tried a list box, but I want to only show one item in the list, unless the user selects the "drop" arrow, it which case the list expands and the user can select a single item. I am using .net c++ winforms and have done this before, but can not find the right magic to make it work under .net / winforms. Thanks for the help! Tag: PropertyGrid Tag: 103884
  - 9
    - How to hide a textbox in the main form from another Class Hello, does anyone know how to hide/show a textbox field in the main form from another class? I named the main form frmMain and it has a textbox field called txtOrderName. I then have a public class named clsProcessData. I would like to create a procedure in this class that will hide the textbox in the main form. How do I reference the text field from the new class? I know that the answer will be quite simple, but I can't seem to find it. Thanks. Tag: PropertyGrid Tag: 103883
  - 10
    - adding designtime support for property of usercontrol (InitializeComponents) I have a very simple UserControl (derived from System.Windows.Forms.UserControl) that contains several ListViews. The UserControl exposes a single public property: public ListView.ColumnHeaderCollection Columns { get {...} }; When I use VS2005 designer's proprtygrid for that UserConrol to add new Colums to the Collection everything works fine: The form that contains the UserControl gets new members ( private System.Windows.Forms.ColumnHeader columnHeader1, ...) in the UserControl.Designer.cs also initializes each ColumnHeader inside InitializeComponets(). There is one thing though that the designer fails to do: it does not add the necessary: this.userControl1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {this.columnHeader1,this.columnHeader2,...}); into the InitializeComponent() Method in the UserControl.Designer.cs. What do I need to do to make that happen ? Tag: PropertyGrid Tag: 103882
  - 11
    - Newbie and 2005 Concurrecny Hi All, Hope you all fine? Can I ask you all a quick question? I`ve been trying to get concurrency to work for my project in VB2005. I have the following code, which to be fair i`ve got so lost with but here it is: Private Sub BTADSL_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.MasterDBDataSet.EnforceConstraints = False Me.M_BTAnalogueLinesTableAdapter.Fill(Me.MasterDBDataSet.M_BTAnalogueLines) Me.S_LocationsTableAdapter.Fill(Me.MasterDBDataSet.S_Locations) Me.M_BTADSLTableAdapter.Fill(Me.MasterDBDataSet.M_BTADSL) 'USERS M_BTADSLDataGridView.DataSource = MasterDBDataSet.M_BTADSL BTAnalougeLinesIDcomboBox.DataBindings.Add("TEXT", MasterDBDataSet.M_BTADSL.BTAnalougeLinesIDColumn, "TelephoneNumber") BTAnalougeLinesIDcomboBox.DataSource = MasterDBDataSet.M_BTADSL BTAnalougeLinesIDcomboBox.DisplayMember = "M_BTADSL.S_Locations.TelephoneNumber" BTAnalougeLinesIDcomboBox.ValueMember = "M_BTADSL.BTAnalougeLinesID" LocationsIDcomboBox.DataBindings.Add("TEXT", MasterDBDataSet.M_BTADSL.LocationsIDColumn, "Location") Dim cmBTADSL As CurrencyManager cmBTADSL = Me.BindingContext(MasterDBDataSet, "BTADSL") cmBTADSL = DirectCast(BindingContext(MasterDBDataSet.M_BTADSL), CurrencyManager) 'USER Im so confused with the concurrency thing i just don`t know where to go now. Could anybody have a look and tell me what a mess i`ve made and how to solve it? If poss maybe some links? Many Thanks A very Comfused Newbie Tag: PropertyGrid Tag: 103881
  - 12
    - Control Focus Does anybody know why when a form is shown within a client region it takes two clicks of the mouse to activate a clicked control, even though this "sub form" as focus? Tag: PropertyGrid Tag: 103880
  - 13
    - Desktop Application Culture Setting hi guys! i've got one interesting problem. one of my utility is generating data machine specific, i mean the data is generated in the culture that the machine has. my problem is with the numerical data, especially with double values. the numeric data fetched from the database and saved on the machine is in non english culture. i want data in only english culture but i dont know how to set it. The application is Windows Desktop Application. can anyone tell me how can i set culture for my application so that it can always you english culture(US or UK) for Datetime and numeric data? Tools c#.net 2005 (VS.NET 2.0) ms sql server 2000 thanks, Lucky Tag: PropertyGrid Tag: 103877
  - 14
    - Reset DropDown ASP.NET 2.0 webapplication DropDown list and button on same page DropDown_SelectedIndexChanged - redirect to selected item value Button_Click - redirect to another location Select item from dropdown correctly goes to selected location. Back arrow returns to my page. Selected item is shown as selected. Selecting button transfers to previously selected item Url and not the Url in the Button_Click handler. How do I "reset" the DropDown to its original value (displaying item[0]) for subsequent selections? What was the source of you information? -- -- Thom Little -- www.tlanet.net -- Thom Little Associates, Ltd. -- Tag: PropertyGrid Tag: 103875
  - 15
    - Defaults for data bindings Update Mode When you bind a data source to a control the binding data source update mode defaults to "OnValidation". I find this a pain and I would prefer the default to be "OnPropertyChanged". Does anyone know if this default could be changed or how I could go about overriding this behaviour. e.g. using descendant controls. I only want to change the default (I might need to change it back to "OnValidation" if needed. Thanks -- Andrew Cutforth - AJC Software - www.ajcsoft.com The best folder synchronize and directory compare tool available. AJC Active Backup instantly archives every file you edit giving you unlimited undo and automatic revision control. Never lose your data again. Tag: PropertyGrid Tag: 103872
  - 16
    - Disabling Datagrid column Hi I have Datagrid with three columns pulled from database, I have edit functionality in which only one column should be editable, how do i make other two columns readOnly next is Add New functionality in which the user should be allowed only to add a new record and not edit any other record how do i do this, if anyone has any idea thanks shreelekha Tag: PropertyGrid Tag: 103868
  - 17
    - DataGridView Hello what's the best to clear (delete) the content of a DataGridView ? I didn't find any methods to do this. Thanks for your help Philippe Tag: PropertyGrid Tag: 103867
  - 18
    - load resources (string-table) from database hi, i like to load the resources (specially the string-table) from a database table. is this possible ? e.g. with a custom resource-loader i know there is such a concept in asp.net (resource provider factory) but i have nothing related found for winforms. thanks, stefan Tag: PropertyGrid Tag: 103865
  - 19
    - Max form size I have simple form and i try to make it realy big but even when i set max size for example 1200;1200 and i try set my size of my form 1100;1100 it automaticly change it to 1036; 780. I cant make it bigger than this! Can any1 help me? Tag: PropertyGrid Tag: 103859
  - 20
    - NumericUpDown select contents I am having a hard time trying to select thet contents of a NumericUpDown control when it gets focus. When the control gets focus I want all the contents to be selected so that the user would per default overwrite it when she enters data. Basically I overrode OnEnter and did this.Select(0, this.Value.ToString().Length); (seems a bit cumbersome, but I haven't found a better way of doing it). Nothing happens. MSDN documentation states NumericUpDown should have a Text property, I can't see that it does. It does not have a Selection property either, so if I needed the actual selected numbers I don't see how I would get that. When you TAB into the control the contents is selected (as I want it) so I know this must be possible to do when I select it with the mouse also. Thanks. Tag: PropertyGrid Tag: 103857
  - 21
    - Prevent form loosing focus How can I get that my form always have focus? TIA Drasko Tag: PropertyGrid Tag: 103855
  - 22
    - Urgent Help - SMTP mail I have created the send mail application in console application of c#.net 1. When I set my smtp server as some ip address which is a smtp server and when the smtp runs in my local machine where my exe resides, the mail is sent perfectly. 2. When i specify the ip address of some amtp server in my intranet and when the smtp server is not configured in my local machine whre my exe resides, the send mail fails. My doubts: 1. Eventhough i sent it to the correct ip address of local intranet which is having amtp server , why it is not working? 2. Does it expect to run smtp service in the local machine? 3. Whether smtp has to be configured in local machine. But logically it should not be the case. It should work eventhough the smtp is not configured in the local machine and if it is configured in any other machine which is having amtp server 4. some of the sites specified that the smtp server should be hard coded as "localhost". Is it so? Please help me ASAP. Its urgent Tag: PropertyGrid Tag: 103852
  - 23
    - Add money to your Paypal account with OPRAH 1#B]L Read this message until the end, and you will find out how the money flows in easy !!!!. Follow the steps and it WILL work. Trust me !!!!!. It's NOT illegal and it is NOT a scam !!!!!. PROVEN ON OPRAH! Reported in the Wall Street Journal!!!! The only thing you need is : - E-MAIL ACCOUNT - PREMIER (FREE) or BUSINESS PAYPAL ACCOUNT - $6 on this account (The only investment) - 30 minutes of your time There is no limit on how much money you can recieve, and you haven't got anything to lose with this Business program. I will explain how it works !!!!!. Follow these 4 easy steps and it WILL work !!!!!. STEP 1 : SIGN UP FOR A FREE PAYPAL ACCOUNT !!!!!. Paypal is a free and safe way to pay and receive money on the Internet. Creating a account is as easy as creating a MSN account. Copy and paste the next line in your Internet browser and sign up. HTTP://WWW.PAYPAL.COM Be sure to sign up for a FREE Premier or Business account and not for a Personal account. You cannot receive CREDITCARD payments with a Personal account and we can't have that. Do we !!!!!. STEP 2 : SENT $6 TO YOUR PAYPAL ACCOUNT This is your only investment to receive the money with ease. With your Paypal account, send $1 to each e-mailadres listed below. !!!!! IMPORTANT !!!!! Be sure to use this SUBJECT : *PLEASE PUT ME ON YOUR EMAIL LIST* when you send the money. 1) martine@pilote.net 2) dexxatol@netcourrier.com 3) armygirl8568@hotmail.com 4) comjii@starband.net 5) sinnek@bellsouth.net 6) nsi@nelasat.com STEP 3 : PUT YOUR E-MAIL ADDRESS ON THE BOTTOM OF THE LIST After you have send $1 to each e-mail address, put your e-mail address on the 6th place. Remove e-mail address number 1, and move each e-mail address 1 step up the ladder. !!!!! IMPORTANT !!!!! BE SURE THAT THE E-MAIL ADDRESS YOU USE IS THE SAME AS YOU USED TO SIGN UP AT PAYPAL. Remember that this is LEGAL. You are creating a service : an e-mail servicelist. STEP 4 : UPLOAD OR COPY THIS MESSAGE TO NEWSGROUPS, FORUMS ETC AND EMAIL IT TO ALL YOUR FRIENDS! There are 32,000 newsgroups. Upload or copy this message to at least 200 newsgroups or forums etc, but ........ remember that the more your upload the more people will see your message and the MORE MONEY WILL FLOW IN. How to upload to newsgroups and forums? : After you have followed step 1,2,3 and 4, save this message (and copy so you can use it again). Use your Internet browser and Outlook Express or another newsreader and try to find FORUMS, NEWSGROUPS, BULLETIN BOARDS, DISCUSSION GROUPS, CHAT SITES and ONLINE COMMUNITIES. Use GOOGLE or use a NEWSERVER. Use every option to post this message. Download PostXpert to send 1 message to more NEWSGROUPS at the same time. !!!!! REMEMBER !!!!! The more you post this message the more MONEY WILL FLOW IN. Why does this Business program work so well !!!!!. Lets asume that from the 200 (or more) messages that you have posted, only 5 people respond, you will have your $6 back that you have invested. Those 5 people will each send at least 200 messages with your e-mailadres on number 4. That's 6 x 6 x $1 = $36. The next 25 people will also send 200 messages with your adres on number 3. That's 36 x 6 x $1 = $216. The next 216 people also send 200 messages with your name on number 2. That's 216 x 6 x $1 = $1296!. Those 1296 people again also send 200 messages with your name on number 1. That will give us a total of 1296 x 6 x $1 = $7,776. Now the last tier! 7776 x 6 x $1 = $46,656!!!!!! This is only a EXAMPLE with 6 reactions. You WILL get MORE responses than that. Remember that most newsservers will leave the posted messages on there servers for about 2 weeks. If you will post your message again, it WILL again start from the beginning. So you can repeat this over and over again. Everyday MILLIONS of people are ONLINE and reading these messages, JUST LIKE YOU RIGHT NOW. I also was sceptical in the beginning and have read a lot of these messages. I also thought that it was bullshit. Until I thought : What the hell!, only $6. What's $6 and a couple of minutes of my time to solve my money problems. !!!!! REMEMBER !!!!! Follow every step, and IT WILL WORK, TRUST ME. !!!!! !!!!! BEST WISHES AND GOOD LUCK !!!!! w)O>+;)<9UVS;F>qaGL<Uq#v`V6(F]- rM;$g+!4IIQ*827?H4 Tag: PropertyGrid Tag: 103851
  - 24
    - Windows App Freezing I have a muti-threaded windows app that creates child forms in a separate thread which then invoke a delegate on the MDI parent form. I have put all time-consuming tasks on separate background workers like running stored proc, poppulating data grid, etc. I am running VB.Net 2005 on Windows 2000 SP4 and on XP SP2. After a period of inactivity in the app (15-30 minutes), it freezes. The task manager says its running but I cannot switch to it. I tried using the DoEvents method on a timer but that had very strange results - the app was responsive but all the functionailty errored out. I read up on message pumps and STA model. Even though its should be an MTA, when I try and do application.run - it forces me to create the MDIFrm as STA or a Treeview control on it will not register drag-drop events. I am not using application.run but have set the MDIForm as startp form (and not set it to run as single instance so it should be STA). I am not using any COM but am using Infragistics 3rd party grid control and dock manager. Both are .Net components and don't require registering. The MDIForm as a treeview, dockmanger and a tablelayout panel prior to opening child forms. Any ideas why this freezing is occurring? It was much more frequent (even if there was activity) on XP with SP1 but with SP2, it was much less. Please advise. Thanks Anita Tag: PropertyGrid Tag: 103849
  - 25
    - Installing Windows XP x64 I bought and built a new couputer a few months ago. Part of it was a copy of Windows XP x64 Professional. Every time I have installed the windows I have run into a problem during the Finalizing Installation phase of the installation. During the Saving Settings the installation locks up and stops with a time of 8 or 9 minutes remaining. I have tried switching the CDRom thinking that maybe it was bad. If I just leave it there and see if it will get past it and is just running slow, eventualy the screen saver and eventualy sleep mode kick in and the installation just stops. I am out of ideas as to what it might be. Tag: PropertyGrid Tag: 103846
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  - 1
    - Retrieving the connection string from app.config in VS 2005 How can I retrieve the following connection string from (app.config) using a routine similar to the one I have (at the bottom of the app.config) <connectionStrings> <add name="Coda_Desktop.My.MySettings.CodaConnectionString" connectionString="Data Source=hisqlprod001;Initial Catalog=Membership;Persist Security Info=True;User ID=malpha;Password=password" providerName="System.Data.SqlClient" /> </connectionStrings> <system.diagnostics> <sources> =========================================== Imports System.Data Imports System.Data.SqlClient Imports Microsoft.VisualBasic Imports System.Configuration Public Class Coda_CNN Public Shared Function GetConnection() As SqlConnection Return New SqlConnection(GetConnectionString) End Function Public Shared Function GetConnectionString() As String ' Dim sCon As String = ConfigurationManager.ConnectionStrings("CodaConnectionString").ConnectionString Return sCon End Function End Class Tag: PropertyGrid Tag: 103844
  - 2
    - WebBrowser control and clearing/deleting cookies I have an application that uses an instance of the WebBrowser control. This WebBrowser instance stays active and is never closed while the application runs. I need advice on how to delete the cookies used by the WebBrowser control. The plan is for the application to "timeout" after a short time (30 seconds) and return to a clean state -- with all cookies from the prior session deleted or cleared, regardless of the expiration dates set on those cookies. I need to clear the cookies used by the WebBrowser instance. I have tried the following with no success: 1. webBrowser1.Document.Cookie = ""; 1.a. webBrowser1.Document.Cookie = null; For both of these, webBrowser1.Document.Cookie was unaltered, it did not change. 2. Parse webBrowser1.Document.Cookie into a System.Web.HttpCookieCollection, then iterate through the cookie collection, setting cookie.Expires to a date prior to today. Then write these cookies back to webBrowser1.Document.Cookie. This resulted in webBrowser1.Document.Cookie having duplicate cookie items, but without expires. One idea may be to delete the cookies via the file system. Tag: PropertyGrid Tag: 103843
  - 3
    - ClickOnce App Won't Start I've got a client with a computer on which no ClickOnce app will start when run with a URL command line. The OS is Win 2003 Server. If I try to run an app directly from the user's cache (<user dir>\Local Settings\Apps\2.0) it will work. My first thought was a permissions issue. So I added the URL to the 'Trusted Computers' list and upped the permissions for all apps on that list to Full Trust. Still no luck. No error message, nothing in the event logs, just nothing. I've tried uninstalling the apps as well - and I can't uninstall them. Nothing happens when I try. I've also uninstalled/reinstalled the .NET 2.0 runtime. Until recently, the machine had no problems running these apps. I've enabled CLR logging, but it doesn't appear to contain any useful info: -------------------------------------------------------------- CLR Loading log for C:\Program Files\Internet Explorer\iexplore.exe Log started at 4:15:06 PM on 8/15/2006 ----------------------------------- Host supplied values (usually set via CorBindToRuntime) ----------------------------------- ----------------------------------- Default version of the runtime on the machine: v2.0.50727 Decided on runtime: v2.0.50727 -------------------------------------------------------------- Any help would be greatly appreciated. Kelly Harrison Small Business Software Shop Tag: PropertyGrid Tag: 103842
  - 4
    - yes/no If i want to add a checkbox and store the answer in my SQL Express database, do i just ad it as an integer to the database and check the value say 0 for no 1 for yes? or is there an easier way? Tag: PropertyGrid Tag: 103841
  - 5
    - MenuStrip not showing when form opens Hi, When I run my app, the MenuStrip at the top of the form does not show (actually it's transparent) until I move the form (drag it by at least 1 pixel). Is it a bug? Is there a solution to this behavior? I looked at the menu's events and the form's events, but nothing suspicious, so it must be from a property or a bug... There's no user pointing on the form except from 2 user controls that draw themselves and nothing else so I don't think they can be the source of the problem. So, a known bug? a solution? Thanks ThunderMusic Tag: PropertyGrid Tag: 103840
  - 6
    - ClickOnce updates and Data folder Hi, I am settings up my application to work with ClickOnce deployment. However, after instlling installing an update, the database doesn't get copied. I tried everything I could think of. It is a SQL Server Express database created in ClickOnce data folder (ApplicationDeployment.CurrentDeployment.DataDirectory). I use User Instances, that is, I connect directly to the database file. So, I install version 0.7.0.0, run it, it creates a new database, I add data to it. Then, I update to version 0.7.1.0. The database doesn't get copied so I loose my data. I made sure the database is detached before updating but it doesn't help. Any ideas? I'm clueless on this one. This is the database that *should* get copied: C:\Documents and Settings\Etienne\Local Settings\Apps\2.0\Data\W596OLLL.TL5\5YR6XOT1.HHP\form...app_dafda4b6e62d7a1b_0000.0000_422f5ed55aef8e45\Data\FormanaDB.mdf (and log file) Also, I create manifests manually using Mage tool because of Visual Studio limitations. btw, I can't find much on google about ClickOnce issues, anybody know of active ClickOnce forums or something? Thanks, Etienne Tag: PropertyGrid Tag: 103836
  - 7
    - Refresh Binding Hi, I have a Typed DataSet that is bind to some winform controls. TextBox, Labelx etc.... At some point, my dataSet values are updated being the scene. The probleme is that my binded controls are not updated automatically when DataSource is updated. What I have to do to force the rebind of my controls ? ..Etienne Lefrancois Tag: PropertyGrid Tag: 103835
  - 8
    - ComboBox onSelectedIndexChanged Event Hello, I am working on three comboboxes Country, State and City. When Country is filling with database its onSelectedIndexChanged event fires for each binding, why? I fill State combobox for the selectedvalue of country. for the matter above of onSelectedIndexchanged, first time in SelectedValue of Country combobox is "System.Data.DataRowView". Nest time it shows balnk value and through and exception of zero based index. I am very worry about it. Please as soon as possible. Regards, Ather Ali Shaikh Tag: PropertyGrid Tag: 103833
  - 9
    - Form to COM Hello, I have a Form derived class (in a class library project), and I want to use this class in an MFC application (via COM). How do I do it? I'll appreciate a step by step tutorial. Thanks, Janiv Ratson. Tag: PropertyGrid Tag: 103832
  - 10
    - Creating a Windows App version of a Web App I have a fully functional web app that I created in Visual Studio 2003. I've even managed to translate it to a functional working 2005 version. What are the best steps to creating a Windows based form version in a manner that I can preserve a lot of the routines that I have written? For example, I have a connection string in a WebConfig file that I refer to in my Data Access Layer. I didn't use the graphical objects to do this, I wrote most of the code and I would like to use this setup to take a lot of business logic along for the ride: For example, this routine fils a DataGrid on a Patient Screen with Lab results Public Shared Function GetLabs (ByVal lMRN as integer) as dataset Dim conMembers as SqlConnection = GetMembershipConnection() Dim strLabsSQL as string strLabSQL = "SELECT Proc_Name as [Lab Procedure], Comp_Name " _ & "as Component, Result " _ & "FROM tbl_Lab " _ & "WHERE MRN = @MRN " _ & "ORDER BY Result_Date desc" Dim cmdGetLab as new sqlCommand(strLabSQL, conMembers) cmdGetLab.CommandType = CommandType.text Dim daLab as New SqlDataAdapter daLab.SelectCommand = cmdGetLab Return dsLab End Function '============================= I know there are new graphical ways to do this, but to save time, I would like to use the types of tools I have already created, and not spend time trying to learn about a more simple redesign using the new graphical tools. Unless their is a simple way of illustrating how I could change the above sample. The majority of my tools are setup this way. We are trying to quickly migrate into a stand-alone desktop version which connects to a subscribed replicated SQL Express version. A replacement for my connection reference in WebConfig setup using the AppConfig tool would be very valuable. Thanks! Tag: PropertyGrid Tag: 103827
  - 11
    - Context menus on TextBox and RichTextBox Hi, I am using a RichTextBox and I would like to have the standard context menu (RightClick menu) that the standard TextBox control has (i.e. if you use TextBox instead of RichTextBox, there is a standard context menu with Cut, Copy, Paste and few other selections right out of the box, you don't need to do anything). However, this is not available (at least not right out of the box) for the RichTextBox. I tried to find a property or a method to enable this but could not find anything - it looks like I need to implement the context menu. Not that it is a big deal, but all I need is exactly what's in the TextBox context menu, and I wonder if there is an easier way to enable it. Thanks, Ivan Tag: PropertyGrid Tag: 103825
  - 12
    - Treenode - line through it I have a situation where there is stuff in the database that I want to display but make sure the user know's it's been disabled. Ideally I'd like to draw a line through the item. Is there a way to do this? TIA - Jeff. Tag: PropertyGrid Tag: 103823
  - 13
    - How to host CHM help viewer in an MDI child form? I am writing a Windows Forms application using VS.NET 2003 and C#. The application uses the Multi-Document Interface (MDI) style. Our customer education team requires that the application display context-sensitive help using the common CHM file format. We are currently using P/Invoke as follows to display the help file: [DllImport( "HHCtrl.ocx" )] public extern static int HtmlHelp( int hwnd, string pszFile, int cmd, int data ); protected const int HH_HELP_CONTEXT = 0x000F; virtual protected int DisplayHelp( int helpID, string fileName, string helpName ) { // Open the HelpViewer window. int res = HelpControlBase.HtmlHelp( 0, fileName, HH_HELP_CONTEXT, helpID ); return res; } This launches a new form in a child process. We now need to have the CHM help content be hosted in an MDI child form so that the child form can be managed like all of the other child forms. I have searched without success for information on how to do this. How can I display the CHM help content in an MDI child form? Is there a .NET solution for this? Thanks, Dave -- Dave Leach Agilent Technologies, Inc. Tag: PropertyGrid Tag: 103821
  - 14
    - TextBox OnKeyUp/Down, ProcessCmdKey acting up... a lot I'm writing a hotkey selection control, which inherits from a TextBox. It seemed to work fine for a while, but I ran into a huge bug today. The KeyCode/KeyData values are completely whack, I get the same results with KeyUp/KeyDown event handlers and overriding ProcessCmdKey(). Lets say I press "7" (not the numpad 7), and examine the KeyCode/KeyData values on the first line of ProcessCmdKey. I get this... keyData = LButton | RButton | MButton | ShiftKey | Space That's when I press and quickly release a single "7". Numpad 7 gives 0x67, looks sensible... The caret key, next to return (on a Swedish keyboard) gives: RButton | Back | ShiftKey | Space | F17 What the hell is going on? Anybody with a clue? Some keystrokes (such as most letters) work just fine. Thanks in advance /Thomas Tag: PropertyGrid Tag: 103820
  - 15
    - Which is the sequence of events when using ShowDialog()? Hi all, I'm having troubles with a Symbol 9000 device (Compact Framework v 1.1) when activating the barcode scanner from a window. The problem is related to the Activated event of the form which carries the task of the initializing the scanner. It looks like this event is not called after the creation of one of the forms. Let me describe shortly the sequence of form creation. The app first call a browsing form by using ShowDialog(). This browsing form (modal dialog) calls a data input form that uses the scanner device using ShowDialog(). It works as expected. On the Activated event it captures the scanning device and on Deactivate releases it. This forms is also a modal dialog. From this data input I call a third data input form also by using ShowDialog(). Note it is the third on the "stack" of called modal dialogs. The Deactivate event is called for the second form and the scanner is released, but the Activated event is not called for this third form then the scanner is not activated. To get the Activated event called I should make a trick: The three modal dialogs are represented on the taskbar as buttons. I can click the button of the second form. It is displayed but is blocked for input. But in this click the Deactivate event is called for the third form and the Activated is called for the second. Then I click the button on the taskbar for the third form and voila! the Activated event is called for the first time for the third form, resulting in the scanner device being activated. I should note that the handlers for these events are registered in the Load event handler. The Load event handler is registered on InitializeComponent as normally it is created from the Visual Studio 2005. I fear the Activated event is called before the Load when the handler is not registered yet. What can be wrong? Which is the sequence of events when using ShowDialog()? Any hint is welcomed Thanks in advance Sammy Tag: PropertyGrid Tag: 103817
  - 16
    - Finding text from a single cell in a datagridview Hi, I have a datagrid view that I have manually bound with a dataset. It has a column displayed as checkboxes, what I want to do is update the database when a checkbox is checked. To do this I need to find a value at cloumn index = 0 that corresponds to the row in which the checkbox has just been checked. Here is what I have: private void dgErrorLog_CurrentCellDirtyStateChanged(object sender, EventArgs e) { int row = dg.CurrentCell.RowIndex; int col = 0; string loc = // Text in cell (0, row); } So when the checkbox value changes, i find the row index of it. The problem is now that i don't know how to set the text in cell (0, row) to a useable string. Any ideas? Thanks. Tag: PropertyGrid Tag: 103814
  - 17
    - Re: Slow drawing speed of WinForms (esp via COM interop) - SOLVED On Tue, 18 Jul 2006 15:57:37 +0100, in microsoft.public.dotnet.framework.windowsforms you wrote: >Hi, > >Has anybody experienced severe slow-down with the drawing speed of >WinForms? It's not fast at the best of time, but the particular >scenario I am having problems with is via COM interop and Excel. > >The structure is: > > > Excel VBA macro > | > V > instantiate and call a COM wrapper class exposed > by my assembly using ComVisible(true) > | > V > Wrapper class instantiates the WinForm > and displays it > > >The forms don't do anything special, they contain maybe 10-20 >controls, including one or two grids, but you can sit there and watch >them paint themselves control-by-control. > > Phil I finally got chance to take an indepth look at this problem this morning, and much to my surprise, I have actually solved it without too much trouble. The problem was not related to Debug vs Release mode, order of form painting events, in process vs out of process COM servers, BeginUpdate()/EndUpdate, SuspendLayout()/ResumeLayout(), SuspendBinding()/ResumeBinding() or any other "usual suspect". It was purely a problem within the WinForms engine when it comes to painting forms. I proved this by creating a simple form and dragging about 20 controls onto it. Display this form via a COM interface and the painting speed is terrible (checked list boxes are particularly bad), run it by double clicking the EXE from within Windows Explorer and the painting speed was great. So what's the difference? It turns out that the problem is related to these 2 magic lines that VS2005 puts at the beginning of the Main method in every Windows Forms application: Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); You know, the 2 lines that you mentally tune out because they are always there and you never need to edit them and they run first before anything happens because Main is the entry point for your application... However, if you are allowing callers to display forms via a COM interface then you have multiple potential entry points to your assembly, and Main is actually unlikely to be the first method to run. For example, here is a COM interface in a test app I wrote: [ComVisible(true)] [Guid("33F6DDA9-0D4D-4276-AC8D-C66E315649F2")] [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)] public interface IShowForms { void ShowForm(); } [Guid("3649EC0C-8F49-4844-B2F0-EF154E2D10AF")] [ClassInterface(ClassInterfaceType.None)] [ProgId("COM.ShowForms")] [ComVisible(true)] public class ShowForms : IShowForms { public void ShowForm() { using (Forms.frm1 f = new Forms.frm1()) { f.ShowDialog(); } } } You can instantiate and run this from VBA using the following: Dim f As COM.IShowForms Set f = New COM.ShowForms f.ShowForm If you do this, then those magic 2 lines don't get called and the painting performance is pathetic. So to solve the slow painting problem we need to ensure those 2 lines are run (the WinForms engine also requires that the 2 lines are run before any forms are displayed and that they are only called once). My quick and dirty solution is to add a static variable and method to the Program class: private static bool m_VisualStylesHaveBeenSet; public static void SetVisualStyles() { if (!m_VisualStylesHaveBeenSet) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); m_VisualStylesHaveBeenSet = true; } } Then adjust Main to call this method, and ensure that the constructor of every class which is exposed via COM also calls it: static void Main() { SetReferenceToConfigFile(); SetVisualStyles(); Application.Run(new frmMain()); } public ShowForms() { Program.SetVisualStyles(); } This is a tolerable solution at the moment because I only have about 5 COM-exposed classes, but a better solution might be to try and call it when the assembly is loaded. By the way, it's actually the call to EnableVisualStyles() which is the one which gives the performance boost, the other line doesn't seem to make any difference. I have had a look at the code for the EnableVisualStyles() method in Reflector, and it doesn't seem to do much so the reason for the poor performance is still unknown to me. I suspect it is hidden deep in the WinForms engine, and may be operating system related (I am on XP Pro SP2). Happy interopping! -- Phil Tag: PropertyGrid Tag: 103813
  - 18
    - PropertyGridInternals.MergePropertyDescriptor returns null value I've specialised a System.ComponentModel.TypeConverter class to handle a bespoke object which I need to display on a PropertyGrid. I override the GetStandardValues fnt and retrieve the currently displayed object using -- myObj = context.PropertyDescriptor.GetValue(context.Instance) as myObjType; This works great if only one item is added to the propertyGrid eg. myPropertyGrid.SelectedObject(myPropsToDisplay); But, if I add multiple objects to the propertyGrid eg. myPropertyGrid.SelectedObjects(myPropsToDisplayArray); the context.PropertyDescriptor.GetValue(context.Instance); returns null. Is this a bug or am I missing something? Thanks for any help. Tag: PropertyGrid Tag: 103812
  - 19
    - How to set ImeMode for the datagridviewtextboxcolumn? How to set ImeMode for the datagridviewtextboxcolumn? I want to disable ime each cells on datagridview when editing. Tag: PropertyGrid Tag: 103807
  - 20
    - Using .NET dll as COM component in MFC MSI Application Hello, I have written a class library (dll) using csharp and VS2005. Now, I want to use this class as COM in my MFC application. I'm looking for a step-by-step information on how to do it, consiting the two parts: 1. Exporting a class library as COM component. 2. Using the COM component in my MFC MDI application. Thanks in advance. Janiv Ratson. Tag: PropertyGrid Tag: 103802
  - 21
    - message queue Hi Here is my problem: I have a control that does one thing when it is clicked and something else when it is double clicked. However the click event is always fired before the double click event. Is there any way I can look at the message queue for this control and determine if the next message is a double click and therefore disregard the click event? Tag: PropertyGrid Tag: 103797
  - 22
    - Can you Add a ActiveX control in another thread and show it on a form I have a third party active X control which I am using. Some functionalities require a bit of processing (loading and manipulating files). Since I (or I don't know how to do otherwise) need to add the control using the same thread as the UI, when it loads the file it locks up the painting of the form until the control is finished. Is their a way to have the control loaded in another thread then the form which holds it? Thanks Tag: PropertyGrid Tag: 103796
  - 23
    - List of items WinForms can do that WebForms cannot I would like to build a WinForm demo form (perhaps MDI) to log and demonstrate the various controls, events, etc that WinForms can do that WebForms cannot. This is intended as an objective way to compare the various features, pluses and minuses of each paradigm. I would intend to post this form to CodeProject for anyone to see. Subsequently, perhaps I or someone else could do the same for WebForms. For now, here are a few things I thought of (and I could be in error; that's the point your help). 1. System tray 2. Notify icon and functionality 3. Popup windows (like Outlook) for new mail arrivals 4. Scroll bars 5. F1 Help 6. MDI 7. Drag/Drop Thanks, Dean S Tag: PropertyGrid Tag: 103795
  - 24
    - delay in drawing controls during loading of form Hi, I have a form (C#) which has multiple controls on it (picturebox, tab controls, etc). When the form begins to draw on its initial load, the background is drawn with all the controls being transparent. Then each of the controls seem to be drawn one after another. Is it possible to make it that the form (and all the controls) draws at once. Kinda like DoubleBuffering if I was doing a OnPaint. Thanks Tag: PropertyGrid Tag: 103794
  - 25
    - How to unescape HTML string I have a simple question, is there an easy way in .NET to unescape HTML characters? for example I have a string "Siebel Analytics Sr Consultant-&quot;Partner w/ Deloitte &amp; have the oppty to become a Partner&quot;" and I want to have "Siebel Analytics Sr Consultant- Partner w/ Deloitte & have the oppty to become a Partner" Thank You Tag: PropertyGrid Tag: 103791

How does the WinForms PropertyGrid work?
Do they use reflection/Reflection.emit, to get the props and their values?

Can someone tell me?

Top

Re: PropertyGrid by Bob

Bob
Thu Aug 17 05:24:23 CDT 2006

PropertyGrid does indeed use reflection. It also takes notice of attributes
such as TypeConverterAttribute, EditorAttribute and BrowsableAttribute to
decide which properties to display and how.

--
Bob Powell [MVP]
Visual C#, System.Drawing

Ramuseco Limited .NET consulting
http://www.ramuseco.com

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"a" <a@b.com> wrote in message news:uBr4kKewGHA.4612@TK2MSFTNGP02.phx.gbl...
> How does the WinForms PropertyGrid work?
> Do they use reflection/Reflection.emit, to get the props and their values?
>
> Can someone tell me?
>
>
>

Top