Internet connection detection

TheMSsForum.com: The Microsoft Software Forum

The MSS Forum ‹ Winforms
- Archive
  - Biz
  - MCSE
  - CRM
  - Drivers
  - Framework
  - ADO
  - ASP
  - Compact
  - Forms
  - Dotnet
  - C#
  - VB
  - FontpageGen
  - Excel
  - WorkSheet
  - Exchange
  - Setup
  - Fox
  - Fontpage
  - ASP
  - IIS
  - Entourage
  - Money
  - Messanger
  - PocketPC
  - Powerpoint
  - Project
  - Publisher
  - Excel
  - VB
  - Security
  - Portal
  - Services
  - SQLServerDev
  - SVCS
  - SQLServer
  - VB
  - VC
  - MFC
  - ExcelGen

- Previous
  - 1
    - Cutting off first several bytes from the stream Hi all. How do I cutt, say, first 25 bytes from the stream? Any help would be greatly appreciated!! Tag: Internet connection detection Tag: 92220
  - 2
    - How to center text vertically in a RichTextBox Does anyone know how to center text vertically in a RichTextBox. Thanks in advance Tag: Internet connection detection Tag: 92218
  - 3
    - displaying config dialog after main form For the first run of my application, the configuration dialog needs to be displayed. I have tried loading the config dialog in the form load, but the form is not loaded yet. What is the easiest way to display the config dialog? Sam Tag: Internet connection detection Tag: 92217
  - 4
    - Installing Merge Modules from C# Windows Form Application (not using a setup and deployment project) Installing Merge Modules from C# Windows Form Application (not using a setup and deployment project) Hi, Currently, we have an InstallShield project that creates a setup.exe that only installs 20 or so merge modules. It does nothing else. We then have our own custom, C# Windows Form application that installs our software applications. It does this by copying files, creating registry keys, etc. So what I'm trying to do is get rid of the separate InstallShield setup.exe. We want one setup application that installs both the merge modules we need and our software applications. Is there any way to run/install merge modules from a C# Windows Form application? We are not and cannot use a Setup and Deployment Project to do this. Thanks. Tag: Internet connection detection Tag: 92216
  - 5
    - Opening up windows form with muliple threads Hi, I have an application which has browser control in it, i open this form and it does some automated steps and closes it self every thing wrok so far. Now wanted to open multiple instances of this form each of them running in its own thread. But when i try to create this form within newly created thread it gives me error (somthing like Activex control cannot be instnciated in a worker thread etc) any idea hint, Thanks, Sajjad Tag: Internet connection detection Tag: 92215
  - 6
    - Loading (Running) EXE into GAC Hi, Could anybody provide good reason for me to load my windows forms exe into GAC and then use it as primary application location? Thanks, Leonid Tag: Internet connection detection Tag: 92213
  - 7
    - Windows Forms in Windows Services Hi , Is it possible to have Windows Forms in a Windows Service , I have tried to do it but the application always locked . Actually I am calling de .show method of the Form in the Onstart Event of the service . In the Microsoft documentation I can see that a windows service is a process that does not have a user interface ; however when I used Visual studio 6.0 I made services with an user interface ... How can I do this in .NET ... Or it is not possible Than you in advance. Tag: Internet connection detection Tag: 92207
  - 8
    - detecting the change in the cell of a datagrid Hi I am implementing DataGridTextBoxColumn in my Datagrid. I would like to find out when the data in a cell belonging to this column style is changed. I would like to format the contents say for instance to a currency if the contents of the textbox are of numeric type. I modified the following in the Commit function Protected Overrides Function Commit(ByVal cm As CurrencyManager, ByVal RowNum As Integer) As Boolean ' ' Parse the data and write to underlying record. ' Me.HideEditBox() ' return focus to the DataGrid control Dim box As DataGridTextBox = CType(Me.TextBox, DataGridTextBox), Value As String ' Do not write data if not editing. If box.IsInEditOrNavigateMode Then Return True If TextBox.Text = "" Then ' in this example, "" maps to DBNull SetColumnValueAtRow(cm, RowNum, DBNull.Value) Else ' Parse the data. Try If ValidateContents(TextBox.Text) Then Value = FormatContents(TextBox.Text) Else return false ' to retain the old value This is the problem. End If Catch Return False ' Exit on error and display old "good" value. End Try SetColumnValueAtRow(cm, RowNum, Value) ' Write new value. End If Me.EndEdit() ' Let the DataGrid know that processing is completed. Return True ' success End Function Commit function is being called twice when I have the return stmt. If I take it out the Value is nothing and I am losing the old value in the cell. Tag: Internet connection detection Tag: 92206
  - 9
    - Application.Run() Does anybody know why some components like Microsoft.DirectX.AudioVideoPlayback.Audio rely on the Application.Run messaging system while other events in other classes dont? Anyone got a reasonable way of testing that using NUnit as well? Thanks in advance for any help offered. Jax Tag: Internet connection detection Tag: 92205
  - 10
    - changed Property of Public Control a Designtime on UserControl disapears! Hi, I'm having some weird behaviour, and I can't find any solution to this. I made a UserControl (uclCommands) which contains a Toolbar (ToolBar1) with Modifiers = Public. I put this usercontrol on my form and call it Ucl1. In the Property Window in the Windows Forms Designer I change Ucl1.ToolBar1.ButtonSize to a bigger value. Everything goes fine: The buttons get the larger size. but after I compile, the ButtonSize gets again the original size..... Does anybody knows why this happens, and what I can do about it? I really need this because my Usercontrol must have different sizes in my application. I tested this with Visual Studio 2005 beta 2 and VS 2003: Both the same behaviour... Any help or hints would be really appreciated! Thanks a lot in advance, Pieter Tag: Internet connection detection Tag: 92204
  - 11
    - NUnitForms - articles and tutorials? Hello, Where can I find articles and/or an online tutorial on using NUnitForms for Windows forms? dbuchanan Tag: Internet connection detection Tag: 92202
  - 12
    - databind with a combobox Hi all, I got a problem with binding an array of object with a combobox. Here is my code: public class Toto { public string Idr; public string Name; public Toto(string id, string name) { Idr = id; Name = name; } } ... and the ui part: Toto[] totoList = new Toto[3]; totoList[0] = new Toto("id1", "name1"); totoList[1] = new Toto("id2", "name2"); totoList[2] = new Toto("id3", "name3"); comboBox1.SelectedIndex = -1; comboBox1.DataSource = totoList; comboBox1.DisplayMember = "Name"; comboBox1.ValueMember = "Idr"; When the program reached the last statement (...ValueMember) I got an : "Cannot bind to the new display member. Parameter name: newDisplayMember" Someone knows why ? Thx in advance Tag: Internet connection detection Tag: 92200
  - 13
    - How to restrict typing characters other than digit in TextBox in C I am writing some winform application in C#. I want my TextBox control have following properties: 1. accecpt inputing digits '0','1','2','3','4','5','6','7','8','9', and display those digits in TextBox.Text as expect 2. If the user input something other than digits such as 'n', TextBox.Text will not change but perform some operation as I wish. How to program it. Thanks. AJang Tag: Internet connection detection Tag: 92198
  - 14
    - Draw line over richtextbox Hi all, Just want to ask help from you guys. I'm currently stuck with this problem: I need to draw a line from richtextbox and connect it to a lable placed on the form. I'm doing an application that has a similiar concept when you add comments in ms word, there is a line connecting the text to the comments. Thanks, Jon Tag: Internet connection detection Tag: 92193
  - 15
    - Howto pass a cookie to a web browser I have a windows application in vb.net which communicates with different webservers. In some cases I want to start the internet explorer (or another browser) with the current session. How can I pass the session cookie to the browser? Tag: Internet connection detection Tag: 92189
  - 16
    - C# Listview subitems with checkbox/combobox Hi, I am using the listview in the grid format i.e Listview.View.Details. I have a requrement where in I have to show checkbox and combo boxes in each subitems. In other words there should be few checkbox columns and few combobox columns in the listview. Currently I am able to show check box for each item in the listview(i.e each row) but I need it for each cells. Any help/suggestions is highly appreciated Regards Hitesh hiteshsalian@yahoo.co.in Tag: Internet connection detection Tag: 92185
  - 17
    - Triggering a Control Event This is probably a silly question, but is it possible to trigger a button click event from inside the Form_Load event? I know I can just call the Button_Click routine, but I'm not exactly sure how to setup the parameters. Thanks in advance! Jeff Tolman Tag: Internet connection detection Tag: 92182
  - 18
    - Control loaded in IE problem I'm loading a control in IE. If the control is loaded from the server then AppDomain.CurrentDomain.FriendlyName contains the URI of the server that the page is from. If my control is loaded from the GAC on the client machine then the FriendlyName is "Localhost". Is there a way to get the URI from within the control. I've used JScript to pass the document.domain into an OBJECT PARAM but this requires me to change Security Settings to allow "Initialize and script ActiveX controls not marked as safe". I'd like to avoid this whole issue. -Steve Tag: Internet connection detection Tag: 92181
  - 19
    - Datagrid row selection In windows explorer you can select multiple files using combinations of ctrl and shift clicking, then if you click and hold the mouse button on one of the already selected files you can drag all the selected files to wherever. I'm trying to reproduce this kind of behavor in the datagrid, but the problem is that when I click and hold the mouse button on an already selected row all the other rows get cleared and only the clicked on row is selected! I thought I could get around this by keeping track of all the selected rows, intecepting the MouseDown event on an already selected row and then restoring all the rows that are supposed to be selected using DataGrid.Select. However, this doesn't seem to work. It appears that the rows get cleared *after* the MouseDown event and, therefore, after my code to restore the selected rows. This is very frustrating! Does anybody have any ideas on how I can make this work? I have to restore the selected rows while the user still has the mouse button down so that they can drag them. Thanks WJ Tag: Internet connection detection Tag: 92180
  - 20
    - System.InvalidOperationException: Failed to load ImageList I have seen talk of this around but none of them seem to be exactly my problem. Anytime I compile the source of our application on my laptop I get the following error when I run it: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: Failed to load ImageList. at System.Windows.Forms.ImageListStreamer..ctor(SerializationInfo info, StreamingContext context) ... This happens on anybody's computer who runs the program I compiled on mine. If they compile the same program I did it runs fine on both my computer and theirs. I looked into this futher and noticed that the ResEditor can't even open the .resources file generated when I compile the program. It fails to load the imagelist resource. What is the problem? It is as if the resource compiler is not serializing the imagelist out correctly. I already tried to do a repair install of Visual Studio 2003. I have a Windows XP SP2 system on a dell laptop. Tag: Internet connection detection Tag: 92178
  - 21
    - MessageBox-Like Focus in a Custom Form? I am writing a Windows Forms application that manages "Project" content on CD-ROM and DVD media. If the end-user wants to Open a "project", I have to prompt them to insert the media if it not already in the drive. Legacy media contains a heinous Autorun routine that I must intercept. I can do all of this without problem. However, I can only intercept the Autorun event if I am the "Top" Form with Focus. So, I want to display a message box with Cancel and Retry buttons that also contains my custom code for intercepting the Autorun event. How do I create a form (or a derived message box) that incorporates my custom code while maintaining the insistent modality of the MessageBox? Are there some simple properties that I can set on a normal form or simple way to inherit from the standard MessageBox and add my own code? Any advice or suggestions are greatly appreciated. Carl Tag: Internet connection detection Tag: 92174
  - 22
    - TreeNode collapse method does not persist the state of the sub-nodes Hi all, I haven't been able to find any post regarding this problem... the MSDN help about TreeNode.Collapse clearly says: "The state of a TreeNode is persisted. For example, if the next level of child nodes was not collapsed previously, when the Expand method is called, the child nodes appear in their previously expanded state." but what actually happens, is that all the sub node are collapsed as well...is that the normal behaviour? how can I persist their state? Thanks, Amidan. Tag: Internet connection detection Tag: 92170
  - 23
    - Problem accessing VB6 .OCX file from VB.NET Hello: I am trying to access a VB6 OCX file (with many important methods in it created by me) using VB.NET. Let me tell you what I have done to access the methods. I started with registering the OCX file using regsvr32 and registering the ocx file. I tried to create an object using the NEW keyword but was giving me an error saying that the method NEW was private and I cannot access it outside. So I upgraded the old VB6 project to .NET and it created a new .dll file with a "New" method in it. So I could declare an object for that. But whenever I start trying to access any methods in the OCX file I get an exception saying "InvalidActiveXStateException". If I debug step by step, I dont get that exception and but I dont get correct results from the methods. "Register for COM Interop" option is selected in the properties and I also registered the new .dll file using regasm.But the methods still donot work. Please Help Thanks in Advance. Tag: Internet connection detection Tag: 92168
  - 24
    - AxWebBrowser not firing events in production Hi, I can not get NavigateComplete2 and DownloadComplete events from the object AxSHDocVw.AxWebBrowser to fire on production. I have tested on computers having Visual Studio.NET installed and everything goes well. But I tested on computers not having Visual Studio.NET under Windows XP and has the framework and the events will not fire code iam using using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using mshtml; namespace WindowsApplication1 { /// <summary> /// Summary description for Form1. /// </summary> /// public class Form1 : System.Windows.Forms.Form { public SHDocVw.WebBrowser_V1 ie; // Declare a new ButtonArray object. private System.Windows.Forms.Button button3; private AxSHDocVw.AxWebBrowser axWebBrowser1; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public Form1() { // // Required for Windows Form Designer support // InitializeComponent(); ie = (SHDocVw.WebBrowser_V1)this.axWebBrowser1.Application; this.ie.BeforeNavigate +=new SHDocVw.DWebBrowserEvents_BeforeNavigateEventHandler(ie_BeforeNavigate); this.ie.DownloadComplete +=new SHDocVw.DWebBrowserEvents_DownloadCompleteEventHandler(ie_DownloadComplete); // // TODO: Add any constructor code after InitializeComponent call // } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows Form 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() { System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1)); this.button3 = new System.Windows.Forms.Button(); this.axWebBrowser1 = new AxSHDocVw.AxWebBrowser(); ((System.ComponentModel.ISupportInitialize)(this.axWebBrowser1)).BeginInit(); this.SuspendLayout(); // // button3 // this.button3.Location = new System.Drawing.Point(344, 152); this.button3.Name = "button3"; this.button3.TabIndex = 2; this.button3.Text = "button3"; // // axWebBrowser1 // this.axWebBrowser1.Enabled = true; this.axWebBrowser1.Location = new System.Drawing.Point(128, 64); this.axWebBrowser1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axWebBrowser1.OcxState"))); this.axWebBrowser1.Size = new System.Drawing.Size(300, 150); this.axWebBrowser1.TabIndex = 3; this.axWebBrowser1.Enter += new System.EventHandler(this.axWebBrowser1_Enter); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(504, 414); this.Controls.Add(this.axWebBrowser1); this.Controls.Add(this.button3); this.Name = "Form1"; this.Text = "Form1"; ((System.ComponentModel.ISupportInitialize)(this.axWebBrowser1)).EndInit(); this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } private void axWebBrowser1_Enter(object sender, System.EventArgs e) { object o = "about:blank"; axWebBrowser1.Navigate2(ref o); } private void ie_BeforeNavigate(string URL, int Flags, string TargetFrameName, ref object PostData, string Headers, ref bool Cancel) { MessageBox.Show("before nav"); } private void ie_DownloadComplete() { IHTMLDocument2 htmlDocument = (IHTMLDocument2)axWebBrowser1.Document; IHTMLElement body = (IHTMLElement)htmlDocument.body; body.innerHTML = "hello"; body.style.marginTop = 0; body.style.marginRight= 0; body.style.marginLeft = 0; body.style.marginBottom= 0; MessageBox.Show("download complete"); } } } Tag: Internet connection detection Tag: 92167
  - 25
    - Form designer fails to load inherited form I have a base form with a few controls, some methods, and some properties that I inherit from to create three different form classes (in a VB.net 2003 solution, in a lib project along with program and deplyoment projects). When I first wrote this, all worked just fine. I created a new inherited form (using Add inherited form ...) and immediately the newly created form plus any existing forms that inherit from the same base form no longer display but give the error message, "An error occured while loading the document. Fix the error, and they try loading the documen again. The error message follows: Object reference not set to an instance of an object." I assume that the form designer has failed somehow when attempting to draw the form in the design mode. The newly created form never displayed at all. The base form (and others that don't inherit from it), however, display without error. Removing the newly created inherited form from the project and deleting it entirely has not fixed the problem; now I get this error with any of the inheriting forms. Yet, the application runs just fine. I tried the trick of closing all [Design] tabs, and also completely restarting VS with no luck. I ran into this once before and solved it by recreating the base and inherited forms from scratch, a time-consuming excercise that I don't wish to repeat. I am able to recreate a form inheritance example in a separate solution with no problem, as well. Does anyone have a fix or some ideas of what to look for? Thanks, DrJohn Tag: Internet connection detection Tag: 92163
- Next
  - 1
    - Form closing event Hello, Lets say I have a button whose click event closes the form by calling Close. How can I tell if the form is closing from that button click or from hitting the 'X' close button in the top right corner of the form, or by using Alt + F4? Thanks Tag: Internet connection detection Tag: 92161
  - 2
    - DB connection problem in attemp to load DataGrid from SQLServer DB Hi All, I'm trying to run Jeff Prosise's DataGrid example in Chapter 6 of "Programming Microsoft .NET". Jeff provided a MyComics.sql file which I've used in Query Analyzer to create and populate a MyComics database in SQLServer 7.0 installed with NT authentication. I verified that the table had been loaded correctly with a Select statement. IE displayed the following info: ============================ Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'sa'. Reason: Not associated with a trusted SQL Server connection. Source Error: Line 70: "server=localhost;database=mycomics;uid=sa;pwd=xxxxx"); Line 71: DataSet ds = new DataSet (); Line 72: adapter.Fill (ds); Line 73: MyDataGrid.DataSource = ds; Line 74: MyDataGrid.DataBind (); Source File: f:\inetpub\wwwroot\DataGrid-Prosise.Comics.aspx Line: 72 ================================ I exex out the password. I'm quite sure the password I had supplied was correct for the "sa" account. I suspect the problem is a conflict between my specification of NT authentication and the example's use of the "sa" user. Any ideas? Should I post this stuff in some security NG instead? Thanks in advance, Richard Tag: Internet connection detection Tag: 92157
  - 3
    - Multi Threading in Framework 2.0 Beta Hi, I have a form with some ComboBox controls on it. I am populating it on a new thread in Framework 1.1. But it does't work with Framework 2.0 Beta. It says "Cross-thread operation not valid". What is the best way to do it in Framework 2.0. Richard Tag: Internet connection detection Tag: 92154
  - 4
    - Why is the reason for this error While I was playing with VB.NET windows application I came across one particular error. Purposefully I made a button array and try to add an event handler like a normal button. Please find the code below. ------------------------------------------------------ Public Sub Start() Dim But2(2) As Button But2(1) = New Button But2(0) = New Button But2(1).Text = "Age" But2(0).Text = "Man" AddHandler But2.Click, AddressOf clickNewbutton End Sub Private Sub clickNewbutton(ByVal sender As Object, ByVal evArgs As EventArgs) MessageBox.Show("Hello from the new Button" & sender.ToString) End Su ----------------------------------------------------------------------------------- During compilation instead of prompting an user error message IDE crashed with following error "Visual Basic .Net compiler is unable to recover from the following error: System Error &Hc0000005& (Visual Basic internal compiler error) Save your work and restart Visual Studio .Net" What is the reason for this compiler error? JACOB P. JOJAN (MCP) Satyam Computer Services Ltd. Tag: Internet connection detection Tag: 92153
  - 5
    - Display Member - Value Member Hi everybody In my TABLE2 I want to store as FK - ID values from TABLE 1 (see schema). I get in my DataGrid (DataSource = TABLE 2) as DisplayMember name from TABLE 1 (whitch describes ID for easier use - see schema), whitch matching ID (TABLE 1) How can I do this ??? TABLE 1 id PK - int (ValueMemeber in DataGrid) name - string (DisplayMemeber in DataGrid) TABLE 2 id PK - int id1_table1 FK - int id2_table2 FK - int Tag: Internet connection detection Tag: 92151
  - 6
    - Button and Enter key Hello, A button can be clicked by using the mouse, ENTER key, or SPACEBAR if the button has focus. Is there a way for me to make it so that hitting ENTER when a button has focus does nothing? I don't want ENTER to ever cuase the button's click event to be risen. Thanks, -Flack Tag: Internet connection detection Tag: 92149
  - 7
    - Disable drag & drop outside of control Hi All, I am working on a VB.NET app that has multiple windows. I am using drag & drop to move items within a list on the same form, but I want to disable drag & drop between the 2 windows. I thought I could disable the drag & drop when the DragLeave event was fired, but alas, DragLeave only uses System.EventArgs, so I can't set e.Effect to None. Short of prefixing my dragged items with the window number and just doing a check when entering another drop-able control, is there any way I can disable the drop? Thanks in advance!!! Tag: Internet connection detection Tag: 92143
  - 8
    - GDI+ stats with Performance Monitor Is it possible to monitor GDI+ activity with the performance monitor? Thanks Tag: Internet connection detection Tag: 92142
  - 9
    - How to draw text that will fill a panel(form, etc.) Hi, I would like to draw centered text that takes up the entire paintable area of my form. I know how to use a StringFormat to center the text both horizontally and vertically. What I don't know how to do is choose the correct height (and width?) for my font. When the form is resized the font size (and width?) will have to be updated. Thanks, BT Tag: Internet connection detection Tag: 92139
  - 10
    - How to call GDI CreateBitmap function using C# Hi, I do have a Bitmap object in a C# application, i would like to create a bitmap using the GDI function CreateBitmap which could return me a valid HBITMAP (Dont want to use the GetHBitmap method which returns a 24bits bitmap which will loose any Alpha informations like transparency). The declaration for the function will probably look like this : [DllImport("gdi32.dll")] public static extern IntPtr CreateBitmap(int nWidth, int nHeight, uint cPlanes, uint cBitsPerPel, short[] lpvBits); But i have no clue how to provide the parameters CBitsPerPel and lpvBits, and what they do correspond to in the .NET Bitmap object. Any idea how i could call this function properly ? Thx. Tag: Internet connection detection Tag: 92136
  - 11
    - ToolStripItem ordering. I am dynamically creating toolstrips and was wondering if their is a way to specify item ordering. The default seesm to be that Items are displayed in the order they are added. What if I wanted to be able to insert an item between existing items? Tag: Internet connection detection Tag: 92135
  - 12
    - common inheriting class for list controls not satisfactory Hi, I want a common class through which I can use the common functionality provided by the combo box and listbox controls. To elaborate what I'm saying: I wrote a function in which I use the following: 1 - BeginUpdate 2 - EndUpdate 3 - Items collection 4 - items.clear() method above four are avilable in both the combobox as well as the listbox (also listview and maybe some others). I pass a listbox to that function. Now I want to use the same functionality for a combobox also, but cant do that. If I take ListControl as a parameter, which is the base for combo and listbox, it doesnt have a "items" collection neither the "*Update" methods. If I use the ObjectCollections class, they are specific to the listbox and combo as they r inner to both of them. Is there any way I could do this. I dont have the options of extending/inherting from these combo or list control and make my own stuff and pass to this function. Regards, Abubakar. Tag: Internet connection detection Tag: 92132
  - 13
    - Combobox paint problem Hi all, I've got a windows app in development - one of the forms has a tab control on it and one of the tabs has a combo box on it. On the first entry to said tab the combo box displays correctly. Leave the tab (to another tab) and return, the combo refuses to paint itself. If you click where the drop button is supposed to be the drop down appears. Any ideas & thanks ... Tag: Internet connection detection Tag: 92131
  - 14
    - Microsoft VSTO Hello, Can anyone suggest me any good links for learning to use Microsoft VSTO. I need to embed my VB.NET Application into Excel using VSTO. Regards, Rohit Tag: Internet connection detection Tag: 92125
  - 15
    - DataGridView: show not all columns of DataSource Hi, I'm trying to use tha DataGridView of .NET 2. But it doesn't seem to have something like a tablestyle, permitting you to show only some columns of the DataSource andn ot all of them. Does anybody knows how to do this? I want for exemple not that the ID of my records are shown in the DataGridView etc. Thanks a lot in advance, Pieter Tag: Internet connection detection Tag: 92124
  - 16
    - shortcut and InputLanguage the ShortCut work fine, you just put & charecter on text, and use Alt key with letter. but i have problam: we have a form with English Input textbox, but the ShortCut is on another InputLanguage. in MSAccess the shortcut work with 2 Language, but in dotnet the shortcut must be on the same language as InputLanguage! i try to find event, or windows msg, to trap the point befor DotNet search after control with shortcut, but it's not work. please help! Tag: Internet connection detection Tag: 92122
  - 17
    - Main form sent to back when child is hidden Hi, I have a form A that shows and hides a form B. B's owner is set to A. B is modeless so allowing interaction with A in the background. I have a double-click event that selects an item in B and hides it. Sometimes, the double click causes the main form to be sent to the back of all apps currently running, causing great confusion. You have to alt-tab to get it back. I can't reproduce this bug on demand. Does anyone have any ideas on this? regards avner Tag: Internet connection detection Tag: 92119
  - 18
    - Programmatically selecting a DropDownList item I need to programmatically make a selection of a dropdownlist/combobox item, which naturally should force the DropDownList_ValueChanged procedure to fire because it detected that the user made a selection change in the dropdownlist control. Please help. Tag: Internet connection detection Tag: 92117
  - 19
    - unable to display text in textbox Hi, I am using third party control. I wrote an eventhandler for capturing one event, In the event handler i am assigning some text to a textbox, when i debug it and keep break points i am able to see the text in the textbox, but when i remove the breakpoints i could not see the text in the textbox, while debugging i could see the message " Function evaluation disabled because a previous function evaluation timed out. You must continue execution to reenable function". Can any one help please. Thank you Tag: Internet connection detection Tag: 92114
  - 20
    - XP Theme Not Working I have a manifest file called app.exe.manifest and it works great on any developers machine, but once we deploy the application (smart client) on the web server and the users use the url to bring up the application it doesn't have the xp themes any longer. Is the application using the web server to figure out wether to use the theme? I thought the application got cached down to the user and it would have used the users machine to figure out wether to use the xp themes or not? Any help would be appreciated. Tag: Internet connection detection Tag: 92111
  - 21
    - trap menu key if not have shortcut have a way to trap menue key (Alt+Chr) if not handled by ShortCut? Tag: Internet connection detection Tag: 92110
  - 22
    - Asynchronous painting in control using BeginInvoke in Invalidate/Refresh I have a control that paints an System.Drawing.Bitmap. Let's say that I fork off 5 worker threads to do some image processing and I want to display each image that the worker threads process in my control. So I will basically have a bunch of threads throwing images to my control which is then displaying them. The articles I've read seem to indicate that really only the painting of the control needs to be handled in the main UI thread and that everything else up to that point can be done in the worker thread. So I overloaded the Invalidate method as follows: Private Overloads Sub Invalidate() If Me.InvokeRequired Then Me.BeginInvoke(New MethodInvoker(AddressOf MyBase.Invalidate)) Else MyBase.Invalidate() End If End Sub Since I'm painting a System.Drawing.Bitmap, I also need to make sure that only one thread (including the UI thread) accesses the bitmap at a time. For this, I do a little SyncLock-ing as follows: 'Called to display a new image Public Sub DisplayImage(ByVal vBitmap As System.Drawing.Bitmap) SyncLock mBitmapSyncLock If Not mCurrentDisplayImage Is Nothing Then mCurrentDisplayImage.Dispose() mCurrentDisplayImage = vBitmap End SyncLock Invalidate() End Sub 'Paint the bitmap Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs) SyncLock mBitmapSyncLock 'Painting goes on here End SyncLock End Sub My question is: will this work? I've had problems in the past of my app. vanishing on me and displaying errors such as "Failed to load resources from Setup File" or something and I believe it was from violating some rule of the updating the UI from a different thread. Does the above look thread safe? Can I call the DisplayImage(...) method and be sure that everything is being handled in the proper thread? Thanks Tag: Internet connection detection Tag: 92109
  - 23
    - Combobox DropDownList control layout/format issues Hi there, I'm using VB.NET. I have a Combobox DropDownList on the far right hand side of my windows form (unfortunately I can't move it, it has to stay there). The problem is that there are several items in the dropdown that are very LONG, and you can't read everything in the space provided. I modified the DropDownWidth property so that the words can fit, but because the dropdown is on the right hand side, when I click on it, the dropdown expands to the right off the screen! I can't even see the scroll bar if there are several items. Is there a way to have the dropdown expand upwards and to the left when I click on it? Unfortunately due to design constraints I can't move the dropdown somewhere else! I've tried changing the Anchor properties but those don't do anything. Am I missing something? Thanks! ed Tag: Internet connection detection Tag: 92104
  - 24
    - Custom Collection Item Swap with ListBox DataSource problem Hello! I have a Custom Collection which is set as datasource to a ListBox. A Form enables moving items up and down in the list. In the collection this is implemented like this: public void Swap(int oldIndex, int newIndex) { if (newIndex >= 0 && newIndex < List.Count && newIndex != oldIndex) { object tmp = List[newIndex]; List[newIndex] = List[oldIndex]; List[oldIndex] = tmp; OnListChanged(new ListChangedEventArgs(ListChangedType.ItemMoved, newIndex, oldIndex)); } } What happens now is that the listbox automatically switches positions of the items and selects the new index (as should). The problem is that when the event SelectedIndexChanged for the ListBox is triggered (automatically), the SelectedItem is still the old item! How is this possible? Does the ListBox select a new index before refreshing its datasource? ... /AZ Tag: Internet connection detection Tag: 92103
  - 25
    - Determining the resolution of a video file I am displaying video in my own form using the AxWMPLib.AxWindowsMediaPlayer class. I need to know the resolution of the video file so that I can set the size of the window hosting the control. Is there a way of determining this? Tag: Internet connection detection Tag: 92100

Hi all.

What's the best way to detect if the machine running my app is connected to
the Net? I don't need any network/dns info, just "connected? true/false".
Thanks!!

Top

Re: Internet connection detection by Clamps

Clamps
Thu Sep 15 13:35:01 CDT 2005

Dim x As HttpWebRequest

Dim y As HttpWebResponse

x = x.Create(http://www.google.com)

y = x.GetResponse()

If y.StatusCode = HttpStatusCode.OK Then

Connected = True

End if

"Kikoz" <Kikoz@discussions.microsoft.com> wrote in message
news:5AEE5849-7A33-4D9C-90A0-4FA36E8958DD@microsoft.com...
> Hi all.
>
> What's the best way to detect if the machine running my app is connected
to
> the Net? I don't need any network/dns info, just "connected? true/false".
> Thanks!!

Top

Re: Internet connection detection by Herfried

Herfried
Thu Sep 15 15:09:03 CDT 2005

"Kikoz" <Kikoz@discussions.microsoft.com> schrieb:
> What's the best way to detect if the machine running my app is connected
> to
> the Net? I don't need any network/dns info, just "connected? true/false".

In the upcoming VB 2005 you can use 'My.Computer.Network.IsAvailable'.

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

Top

Re: Internet connection detection by Vlad

Vlad
Thu Sep 15 18:44:52 CDT 2005

Thanks!

"Kikoz" <Kikoz@discussions.microsoft.com> wrote in message
news:5AEE5849-7A33-4D9C-90A0-4FA36E8958DD@microsoft.com...
> Hi all.
>
> What's the best way to detect if the machine running my app is connected
> to
> the Net? I don't need any network/dns info, just "connected? true/false".
> Thanks!!

Top