Is there anything vb.net cannot handle?

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  - 1
    - System.Net.Mail Question Hello Everyone, I'm attempting to create a new MailMessage object by following a tutorial and I can't seem to get it right according to VS 2008. I'm hoping someone here can help me find out what I am doing wrong. I would greatly appreciate it: First, I am importing the System.Net.Mail class like this: Imports System.Net.Mail That works fine, no errors. Now, in the subroutine where I need to create the new MailMessage object, I am doing this: Dim msg as Strong MailMessage msg = new MailMessage() At this point Visual Studio does two things: 1. It recreates the statement as MailMessage(msg = new MailMessage()) and 2. It throws two errors: "MailMessage is a type that cannot be used as an expression" and "Name 'msg' is not declared' It simply refuses to build. I am following the tutorial found here: http://linkslash.com/05a47f Can anyone help me figure this out? Thanks! Anthony Tag: Is there anything vb.net cannot handle? Tag: 411509
  - 2
    - How do you programatically set Label Font size I am trying to set the font size on a Label control. Seems like a simple item but I can't find a way to do it. I can set other properties for a Label like Borderstyle, BackColor, Fontstyle=BOLD etc. I'm using VB.NET 2003. Thanks for any feedback Tag: Is there anything vb.net cannot handle? Tag: 411492
  - 3
    - Good installation programs???? Hi, I am having to many problems with the clickonce/publish tool that comes with vs2008. I would like to find a good installation tool, such as wise or install shield thats good for winform apps (sql expresss, crystal reports and plenty of third party components) that are installed from a web site, with the ability to do updates/patches. I have looked at install shield and a few others but the price for these tools seems huge. Has anybody had any positive experiences with cost effective installation tools they can recommend. Thanks Tag: Is there anything vb.net cannot handle? Tag: 411486
  - 4
    - vb.net and sql server express binary data type I have a SQL server 2000 DB that Ihave copied onto my PC and am using SQL server express 2005 to view. I created a project in VB.net and am reading the data out of the DB using System.Data.SqlClient Here is the problem. I am redaing the table fields into variables. All are fine except one. The table has one field that is a binary data type. This field holds anything from a block of text to MS Word docs, Excel spread sheets, and images. I made the variable int a Object type "Dim vararticle As Object" The data seems to be placed into the variable. In this instance I know that the data is just a block of text about a paragraphs worth. I thought I could place it into a textbox like this TextBox1.Text = vararticle but no luck. So the question is how do I get it out of the variable and into the textbox? Thanks, Ty Tag: Is there anything vb.net cannot handle? Tag: 411484
  - 5
    - Strange one in MSChart I was working with MSChart, modifying one of the graphs and decided I wanted this particular chart to have an auto scale. I worked quite a while with it, uttered a few obscenities directed at the usual suspects and finally found I have to do an Application.DoEvents to get it to honor the numbers is it telling it knows but ignores (charts the old scale) until the next update. Of course, by the next update, the message queue has been cleared and it honors the new settings. I still think that MSChart is somewhat of the ugly, stupid stepchild of VB. It is VERY POORLY documented and (somewhat because of the poor documentation) is very difficult to work with. I do have it working after a few hours tinkering. Just a little tickler for anyone else who finds MSChart seems to be ignoring your input -- put a DoEvents in and it will catch up with you. It is the only control that I have ever had to do that with and it took me a while to decide that was the cure. Very foreign idea for me. Mike Tag: Is there anything vb.net cannot handle? Tag: 411467
  - 6
    - what's wrong with xml post code? Hi Trying to get this code to work for http xml post. I need the post to be xml (doc.outerxml) sent in single key name as stream. The following is the post code and code for receiving the request. When it hits the "myresponse = myrequest.GetResponse()" in the post code - I'm getting following error: "The remote server returned an error: (500) Internal Server Error". I don't know if I have something wrong with the post or receiving it on the other end. Right now I'm trying to write it in .net 1.1. Any help will be greatly appreciated. Thanks, Cindy Dim url As String = "http://someplace.aspx" Dim myrequest As System.Net.WebRequest = Nothing Dim myresponse As System.Net.WebResponse = Nothing Try ' Create a request using a URL that can receive a post. myrequest = System.Net.WebRequest.Create(url) ' Set the Method property of the request to POST. myrequest.Method = "POST" ' Set the ContentType property of the WebRequest. myrequest.ContentType = "application/x-www-form-urlencoded" ' Create POST data and convert it to a byte array. Dim vxml = "Interface_2=" + HttpUtility.UrlEncode(Doc.OuterXml) Dim byteArray As Byte() = System.Text.Encoding.UTF8.GetBytes(vxml) ' Set the ContentLength property of the WebRequest. myrequest.ContentLength = byteArray.Length ' Get the request stream. Dim dataStream As System.io.Stream = myrequest.GetRequestStream() ' Write the data to the request stream. dataStream.Write(byteArray, 0, byteArray.Length) ' Close the Stream object. dataStream.Close() ' Get the response. myresponse = myrequest.GetResponse() 'error occurs here Catch ex As Exception Throw ex Finally ' Closed streams If Not myrequest Is Nothing Then myrequest.GetRequestStream().Close() If Not myresponse Is Nothing Then myresponse.GetResponseStream().Close() End Try Code for receiving the post: Dim strReader As System.IO.StringReader = Nothing Dim Reader As System.Xml.XmlTextReader = Nothing Response.ContentType = "application/x-www-form-urlencoded" Response.Clear() Try strReader = New System.IO.StringReader(Request.Form("Interface_2")) Reader = New System.Xml.XmlTextReader(strReader) Do While Reader.Read() Tag: Is there anything vb.net cannot handle? Tag: 411461
  - 7
    - Major problem with VS 2008 I know there are other files that we don't get to see in VS 2008 but why. I know there is info about what regions are collapsed etc. Now I have a problem with the form designer. When I open a form it right off the bat marks it as changed. Just a double click on the form will cause this. So I close it and say no to save it because in my mind there is no change. Well I have a couple of ToolStripStatusLabel's that exist now in the designer file but are no longer associated with a StatusStrip. I really wish MS had used VS 2005 as the base for this version of VS rather than VS 2002 which had the same types of problems. I never ran into these types of problems with VS 2005 but VS 2008 is a real pile of _____ fill in the blanks. I now have to go into the designer file since ToolStripStatusLabel's do not really exist in the form by themselves. Re add them and wait for the next time I open the form. I would really like to know why just opening a form will mark it as changed. I CHANGED NOTHING. Does anyone else have these problems. Lloyd Sheen Tag: Is there anything vb.net cannot handle? Tag: 411458
  - 8
    - threading using for..next Hi, I have some intensive number crunching code that I want to break up into threads so PCs with several processors can do the job quicker. I have a loop that will go from say 1 to 10, and for each value, different numbers will be crunched depending on what the value is. As it is an intensive process the user may cancel the loop. I need to know at what value of the loop the process was cancelled, so it can be restarted at the next value next time. My initial thought was to allocate 1-5 to thread 1 and 6-10 to thread 2 (for a 2 processor machine) - which shouldn't be too difficult. But the issue with this if that if the user cancels then its not so neat to resume as 1 and 6 might be the only ones completed. Ideally I would like to do the following but am not quite sure how. Any pointers or code snippets would be appreciated. for 1 = 1 to 10 step numProcessors (say 2) next i Tag: Is there anything vb.net cannot handle? Tag: 411452
  - 9
    - How to use VB Express to run a program through command prompt Hi, I'm a mechanical engineer new to programming. I was trying to write a program in Visual Basic Express Edition 2005. I want to run a file using an application called madymo601 in command prompt. Normally what I do is to go to Start> Run> and type cmd /k madymo601 c: \filename.xml . I have put the /k there as i need the cmd window open after execution to view the results. I tried to make a small VB program to avoid typing in the commands since the .xml files I need to run could be in various locations. I wrote a code as given below. But seems to have something wrong with the diagnostics.process.start line. Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click OpenFileDialog1.Title = "Please select .xml file" OpenFileDialog1.Filter = "xml files|*.xml" OpenFileDialog1.ShowDialog() If OpenFileDialog1.FileName <> "" Then TextBox1.Text = (OpenFileDialog1.FileName) End If End Sub Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click Dim filepath As String = (TextBox1.Text) Diagnostics.Process.Start("cmd /k madymo601", filepath) End Sub Hope someone could help me out with the right way to do this. Thanx. Tag: Is there anything vb.net cannot handle? Tag: 411450
  - 10
    - VB2008 Express Edition Problem, "Attempted to read or write protected memory." when using SaveFile dialog Windows XP SP3 My application is set to open a SaveFile dialog when an exit is requested. When I click the app's close button, the save dialog opens, but when I click to change the folder, the exception occurs pointing to FileSaveDialog1.ShowDialog(). The exception also indicates some problem with system.drawing.dll. The exception text is: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt." I've also included the exception details below. In trying to resolve this, I first removed and reinstalled VB2008 Express Edition. After that failed to fix it, I reinstalled Windows XP and installed VB2008 ExpEd yet again with the same results. I have other apps that use the save dialog that work fine. Also, when I copy the project structure to another WinXP SP3 machine with VB2008 ExpEd installed, the application works perfectly. Both machines have all of the updates for Windows and VS2005 as of today. This exception also occurs when I use the application's file save button as well as the load file button. Can anyone please help me to determine what is wrong? Thanks in advance, -- ScottG Exception Details: System.AccessViolationException was unhandled Message="Attempted to read or write protected memory. This is often an indication that other memory is corrupt." Source="System.Drawing" StackTrace: at System.Drawing.SafeNativeMethods.Gdip.GdipDrawLineI(HandleRef graphics, HandleRef pen, Int32 x1, Int32 y1, Int32 x2, Int32 y2) at System.Drawing.Graphics.DrawLine(Pen pen, Int32 x1, Int32 y1, Int32 x2, Int32 y2) at System.Windows.Forms.GroupBox.DrawGroupBox(PaintEventArgs e) at System.Windows.Forms.GroupBox.OnPaint(PaintEventArgs e) at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs) at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.GroupBox.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.GetSaveFileName(OPENFILENAME_I ofn) at System.Windows.Forms.SaveFileDialog.RunFileDialog(OPENFILENAME_I ofn) at System.Windows.Forms.FileDialog.RunDialogOld(IntPtr hWndOwner) at System.Windows.Forms.FileDialog.RunDialog(IntPtr hWndOwner) at System.Windows.Forms.CommonDialog.ShowDialog(IWin32Window owner) at System.Windows.Forms.CommonDialog.ShowDialog() at GateManPoly_Patch_Editor.Form1.GateMan_I_Patch_Editor_FormClosing(Object sender, FormClosingEventArgs e) in E:\VS2008\VB\Projects\Synth\GateManPoly_Patch_Editor\GateManPoly_Patch_Editor\Form1.vb:line 886 at System.Windows.Forms.Form.OnFormClosing(FormClosingEventArgs e) at System.Windows.Forms.Form.WmClose(Message& m) at System.Windows.Forms.Form.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at System.Windows.Forms.NativeWindow.DefWndProc(Message& m) at System.Windows.Forms.Form.DefWndProc(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ContainerControl.WndProc(Message& m) at System.Windows.Forms.Form.WmSysCommand(Message& m) at System.Windows.Forms.Form.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at System.Windows.Forms.NativeWindow.DefWndProc(Message& m) at System.Windows.Forms.Form.DefWndProc(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ContainerControl.WndProc(Message& m) at System.Windows.Forms.Form.WmNcButtonDown(Message& m) at System.Windows.Forms.Form.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(ApplicationContext context) at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine) at GateManPoly_Patch_Editor.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: Tag: Is there anything vb.net cannot handle? Tag: 411445
  - 11
    - The data area passed to a system call is too small i am traing to print usisng printer (samsung srp-350) for invoice printing but nothing so far... ----------------------- Private Sub Button1_Click_4(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click printFont = New Font("Arial", 10) Dim pd As New PrintDocument 'pd.PrinterSettings.PrinterName = "HP Deskjet D1400 series" pd.PrinterSettings.PrinterName = "SAMSUNG SRP350" AddHandler pd.PrintPage, AddressOf pd_PrintPage pd.Print() End Sub Private Sub pd_PrintPage(ByVal sender As Object, ByVal ev As PrintPageEventArgs) ev.Graphics.DrawString("a", printFont, Brushes.Black, 2, 4) End Sub -------------------------- it works witht othre pritners but this samsung srp-350 is not working as a result from the code above i got this exception: -------------------------- An unhandled exception of type 'System.ComponentModel.Win32Exception' occurred in system.drawing.dll Additional information: The data area passed to a system call is too small ---------------------------------------------- any idea how to sovlve this ? Tag: Is there anything vb.net cannot handle? Tag: 411441
  - 12
    - como saber de que tipo es un archivo? hola. Quiero saber como hacer para identificar de que tipo es un archivo, como ser: quiero que el usuario seleccione un archivo excel y despues poder verificar que asi es y que no es un archivo que se renombro con extension excel. Graicas. Tag: Is there anything vb.net cannot handle? Tag: 411436
  - 13
    - HI HI EVERY ONE H R U?? I WANT A GOOD TOPIC FOR MY VB PROJECT .. PLZ REPLAY ME ASAP......... Tag: Is there anything vb.net cannot handle? Tag: 411425
  - 14
    - Web Page files Is it possible to create a text file on a web server? I heard that this may not be possible. Then I heard there is XML files. Basically I want to enter various options on a web page and then read this data remotely from my vb.net program. I can read a text file from a server ok but I don't know if it is possible to create one in teh first place. I just uploaded it for a test of course. k. Tag: Is there anything vb.net cannot handle? Tag: 411416
  - 15
    - How to stop incrementing the DLL version number? I have written a VB.NET DLL that is called by a third party program. If I make any changes in the DLL and then try to replace my DLL file the third party program will abort, saying that the DLL version number does not match to the DLL that it was linked against. How can I recompile my DLL without incrementing the version number? I don't see where this "version number" is stored in the project. The version number, under the "Assembly Information..." button, is not being incremented. I therefore assume that the DDL version number is stored somewhere else. John Tag: Is there anything vb.net cannot handle? Tag: 411406
  - 16
    - Invalid Sheet Name in Excel 2003 Hello All, We have a VB.NET application writen using VS 2003. This application apens an excel file from a vendor, reads the data and performs whatever functions it needs. We recently upgraded our sytems to Excel 2003 from Excel 2000. Our application started erroring out because it was having a problem with opening the Excel file. From troubleshooting, the exact problem is in Excel 2003, it does not like the sheet name (even though the sheet name is "sheet1"). When I open the Excel file from my vendor using Excel 2003, I get a message box that says "Errors were detected in 'ExcelName.xls', but Microsoft Office Excel was able to open the file by making the repairs listed below. Save teh file to make these reapis pernament." Renamed invalid sheet name. This is fine, if opening up Excel on your own, but our application is a stand alone application that runs everyday, opens a new excel file, performs its actions, and closes. With Excel 2003, Our application gets as far as opening, and then errors our with a message of: "Object reference not set to an instance of an object." because it cannot open the file due to the error being passed back. Is there a programmatic way around this error? Here is my code for opening the Excel File: Public xlApp As Object Public xlbook As Object Public xlsheet As Object xlApp = CreateObject("Excel.Application") xlbook = xlApp.Workbooks.Open(OpenFileName) <-- errors here xlsheet = xlbook.Worksheets.Item(1) The only solution I can come up with is, uninstall Excel 2003 from my computer that the application is running on, and re-install Excel 2000. I would rather try and come up with a solution to the Excel 2003 problem. Thank you in advance for your help. Lyners Tag: Is there anything vb.net cannot handle? Tag: 411401
  - 17
    - write to registry in vb.net and vista hello I need to keep my app entry under HKEY_LOCAL_MACHINE\Software\MyApp. (to support for all users).I need to update one key under MYApp. When I attempt to set value for this key My.Computer.Registry.LocalMachine.CreateSubKey("software \MyApp").SetValue("Licence", "Success") I get error stating Access to HKEY_LOCAL_MACHINE\Software\MYapp denied for Vista only.For XP no problem.If for Vista I give full control to Myapp reg folder ,everything works fine.Is it possible to create the registry key with full controls permission in vb.net? or is there any other way to solve this problem through vb.net.I don't want to give permissions manually on reg key. Thanks Tag: Is there anything vb.net cannot handle? Tag: 411387
  - 18
    - Read Excel-Xml as Embedded Ressource with OleDbDataAdapter Hi, I have an Excel file, saved as XML-file, which is put as an embedded ressource in my project. How can I read this Excel file using an OleDbDataAdapter? I know how to read an XML file as embedded ressource, and how to read a normal Excel file with an OleDbDataAdapter, but what I need is the combination of the two of them! Anybody has any idea? Thanks a lot in advance, pieter Tag: Is there anything vb.net cannot handle? Tag: 411386
  - 19
    - Find the Owner of a folder Hi Is there a way I can fnd the Owner of a folder, using vb.net? I know how to find the permissions, but I can't figure how to find the owner. Thanks SimeonD Tag: Is there anything vb.net cannot handle? Tag: 411383
  - 20
    - Copying arrays of different bases I have one array which is base 1 (rather than 0) and I am trying to use array.copy to copy it into a new array. I get the error: Unable to cast object of type 'System.Byte[*]' to type 'System.Byte[]'. I think this is because the new array, by default is base 0. Without creating a wasteful loop and handling byte for byte, how can I create a base 0 array from a base 1 array? -Jerry Tag: Is there anything vb.net cannot handle? Tag: 411372
  - 21
    - Reading data from a web server I want to set some switches in say HTML, write the data to a file and then read this file from a vb.et program. What is the best approach? I thought at first maybe an RSS feed would do then I thought this was an overkill since the data was more or less just 4 strings of true or false each! What would be the best approach? An XML file local on the server maybe or a text file? How to read it remotely from my computer? Thanks k. Tag: Is there anything vb.net cannot handle? Tag: 411366
  - 22
    - Version Number of a an external application I am using vb.net to launch an external application (.exe); how do I capture this external applications's version number in my vb.net app? Tag: Is there anything vb.net cannot handle? Tag: 411365
  - 23
    - Suspending screen updates Hi I have a winform with a panel on it. I am doing visual changes to the panel. Is there a way to suspend screen painting during these changes? If the whole form needs its display suspended then that would work for me too. How can I do this? Thanks Regards Tag: Is there anything vb.net cannot handle? Tag: 411358
  - 24
    - xml payload string as a single key Hi I'm working on a http xml post (request/response). In my testing - I have been able to post xml string/stream and send response back. But now I've been told that I should "code the whole xml payload string as a single key" I'm not sure what this means and haven't been able to find anything about it. Can anyone help me with this? Thanks, Cindy Tag: Is there anything vb.net cannot handle? Tag: 411352
  - 25
    - Can't sort datagrid by combo box columns I made a grid with several columns. 2 of the columns are foreign keys from 2 other tables in the datasource. I am unable to sort alphabetically by the combo box columns when I click on the column header. I think it is sorting by id not by name. How can I make it sort by name? Tony K. Tag: Is there anything vb.net cannot handle? Tag: 411351
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  - 1
    - Storing Variables I have a sub routine that's passing in a variable. I need to take that variable and store it globally...but here's what's happening. ex: I'm executing my routine: doMyThing(path, "test") I'm executing that command at least 10 times replacing the word test with my next object. When im receving that variable: Sub doMyThing(ByVal Path As String, ByVal other As String) I can use my variable...now how can I take that variable from this sub and pass it to another sub? Is there a way to store that variable or set during each call of doMyThing? Does that make sense? lol Basically I want to store it and change it during each call...i'm doing some async stuff and need it to change each time it's called.... thanks! Tag: Is there anything vb.net cannot handle? Tag: 411350
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    - Recursive Registry Loop I simply want to loop through a registry key, and have all subkeys and values outputed to the console window. It needs to be recursive, so it keeps going into each key one at a time, until it finishes. My code is not close. Anybody have code that has done this? Dim GroupID As Long = 39 'Dim RegKey As RegistryKey = Registry.LocalMachine.OpenSubKey("SYSTEM\CurrentControlSet\Services\LanmanServer\Shares") Dim RegKey As RegistryKey = Registry.CurrentUser.OpenSubKey("Software").OpenSubKey("VB and VBA Program Settings").OpenSubKey("iGen").OpenSubKey("Group").OpenSubKey(GroupID).OpenSubKey("Printer Settings") Dim tempKey As RegistryKey Do Until RegKey.SubKeyCount = 0 Console.WriteLine("There are {0} subkeys under " & RegKey.Name & ".", RegKey.SubKeyCount.ToString()) Console.WriteLine(vbCrLf & "There are {0} values for " & "{1}.", RegKey.ValueCount.ToString(), RegKey.Name) For Each valueName As String In RegKey.GetValueNames() Console.WriteLine("{0,-8}: {1}", valueName, RegKey.GetValue(valueName.ToString)) Next For Each subKeyName As String In RegKey.GetSubKeyNames() tempKey = RegKey.OpenSubKey(subKeyName) Console.WriteLine(vbCrLf & "There are {0} values for " & "{1}.", tempKey.ValueCount.ToString(), tempKey.Name) For Each valueName As String In tempKey.GetValueNames() Console.WriteLine("{0,-8}: {1}", valueName, tempKey.GetValue(valueName.ToString)) Next Next If Not tempKey Is Nothing Then RegKey = tempKey Loop Console.ReadLine() End Sub Tag: Is there anything vb.net cannot handle? Tag: 411348
  - 3
    - Splash screen duration Hi I have a typical vs 2008 winfrom app with a start-up form and a splash screen managed by the framework. My question is what makes the splash screen disappear as I want to keep it displayed for a few more moments than it does? Thanks Regards Tag: Is there anything vb.net cannot handle? Tag: 411347
  - 4
    - Dynamic AddressOf value for AddHandler I'm building a windows forms app in VB.net 2005 and would like to know if there is any way of adding a handler using a dynamic AddressOf value? The application will have a "Windows" menu item and I want to add a list open forms as other menu items to this list. I want to be able to do this dynamically and create a handler for each one that I add. However, instead of creating the handler everytime i open a new form, I want to use a single method that takes a couple of parameters and adds the menu item and builds the handler. an example of what Id like is shown below... Private Sub AddItem(ByVal strMenuItem As String, ByVal strMenuItemName As String) If IsNothing(Me.menuWindows.DropDownItems.Item(strMenuItem)) Then Dim oMI = New System.Windows.Forms.ToolStripMenuItem Me.menuWindows.DropDownItems.AddRange(New System.Windows.Forms.ToolStripItem() {oMI}) oMI.Name = strMenuItem oMI.Text = strMenuItemName AddHandler Me.menuWindows.DropDownItems(strMenuItem).Click, AddressOf strMenuItem & "_Click" End If End Sub Obviously I'd like to be able to remove menu items and handlers when the forms are closed using a similar method. If anyone knows how I can evalute 'strMenuItem & "_Click"' into a proper method name then I'd be most grateful. I thought that there would some some sort of Eval method that would do it, and I'm sure there is something like it, but cant remember what it is! Thanks again Tag: Is there anything vb.net cannot handle? Tag: 411345
  - 5
    - Function to split long string into "sentences" Hi I have written a function to split a string into sub strings of a given fixed max length. This is useful for example in breaking a long message into multiple strings of up to 160 characters to be sent as individual SMS. I am posting the function here in case its useful for someone. Regards 'Function to split a long string into sentences of upto MaxLength size Public Function Split(ByVal Expression As String, ByVal MaxLength As Integer) As String() Dim Separator As String = " " Dim OutAr(0) As String Dim j As Integer Dim i As Integer j = 0 While Expression <> "" If Microsoft.VisualBasic.Len(Expression) <= MaxLength Then ReDim Preserve OutAr(j) OutAr(j) = Expression Expression = "" Else i = InStrRev(Microsoft.VisualBasic.Left(Expression, MaxLength + 1), Separator) If i = 0 Then ReDim Preserve OutAr(j) OutAr(j) = Microsoft.VisualBasic.Left(Expression, MaxLength) Expression = Microsoft.VisualBasic.Right(Expression, Len(Expression) - MaxLength) j = j + 1 Else ReDim Preserve OutAr(j) OutAr(j) = Microsoft.VisualBasic.Left(Expression, i - 1) Expression = Microsoft.VisualBasic.Right(Expression, Len(Expression) - i) j = j + 1 End If End If End While Split = OutAr End Function Tag: Is there anything vb.net cannot handle? Tag: 411342
  - 6
    - Speed issue loading image Hi I am using below statement to load an image; Me.MyPictureBox.Image = Image.FromFile(CStr(Me.txtMyPhotoPath.Value)) Problem is it is taking too long and slowing the app down. Is there another faster way to achieve this? or to degrade the quality of image on the fly to have to load smaller version of image for example? Thanks Regards Tag: Is there anything vb.net cannot handle? Tag: 411338
  - 7
    - onblur in an UpdatePanel I'm having trouble with a datagrid in an UpdatePanel that includes a user control in the footer and edit rows. The user control references a js file that initializes an onblur for the textbox it contains. This is fine when the page loads however after clicking the add button, the update panel refreshes showing me the row I added and a new footer, but the code contained in the onblur function has been added to the page's javascript as if it were a validator. The problem is that at this point it can no longer reference the appropriate objects. In other words, near the bottom of my code snippets below, "doStuff(oThis.textbox);" is being placed into the anonymous javascript function at the bottom, which then throws an error because oThis is undefined. Can anyone tell me why this is happening and how to avoid it? Any I doing something wrong that is causing this? Parent Page HTML: <asp:UpdatePanel ID="up1" runat="server"> <ContentTemplate> <asp:DataGrid ID="Components" runat="server" ...> <Columns> <asp:TemplateColumn> <FooterTemplate> <asp:PlaceHolder ID="ph" runat="server"></asp:PlaceHolder> </FooterTemplate> </asp:TemplateColumn> </Columns> </asp:DataGrid> </ContentTemplate> </asp:UpdatePanel> Parent Page CodeBehind: Dim excip As New myUC Protected Sub Page_Init initUC() End Sub Private Sub initUC() excip = CType(LoadControl("~/myUserControl.ascx"), myUC) End Sub Private Sub Page_Load BuildDataGrid() End Sub Protected Sub Components_ItemDataBound Select Case e.Item.ItemType Case ListItemType.Footer Dim ph As PlaceHolder = CType(e.Item.FindControl("ph"), PlaceHolder) excip.Property1 = "" excip.Property2 = "" ph.Controls.Add(excip) End Sub Protected Sub Components_ItemCommand 'save info initCBO() BuildDataGrid() End Sub User Control HTML: <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Literal ID="Literal1" runat="server"></asp:Literal> User Control CodeBehind: Private Sub Page_Load If (Not Page.ClientScript.IsClientScriptIncludeRegistered(Me.GetType, "jsRef")) Then Page.ClientScript.RegisterClientScriptInclude(Me.GetType, "jsRef", ResolveClientUrl("~/myUserControl.js")) Dim sb as New StringBuilder sb.Append("dynamic javascript") ScriptManager.RegisterStartupScript(Literal1, Me.GetType(), "dynamicJS", sb.ToString, False) End If End Sub myUserControl.js: function myStuff(txtbox) { this.textbox = txtbox; this.init(); } myStuff.prototype.init = function () { var oThis = this; this.textbox.onblur = function (event) { doStuff(oThis.textbox); }; }; Produced validation code: function anonymous() { ValidatedControlOnBlur(event); doStuff(oThis.textbox); } Tag: Is there anything vb.net cannot handle? Tag: 411337
  - 8
    - Boolean Range Hi everyone, Maybe I'm just discovering something late that everyone else knew already, but it caught me off guard. In the past I could do an expression like "If 1 <= x <= 10 Then ..." to see if x was in the numeric range 1-10. So x = 5 would evaluate to True, whereas x = 0 would evaluate to False. Well now it seems that no matter what x is, the statement evaluates to True. I can't find anything concrete to support my theory, but my guess is that the order of operations is the problem here. For example. Rather than the compiler (or whatever) evaluating the above expression as "(1 <= x) AND (x <= 10) it's evaluating it as "(1 <= x) <= 10". So if x is 5 then the first operation (in the parenthesis) will evaluate to True (or -1 converted to an integer) and if x is 0 then the first operation will evaluate to False (or 0 converted to an integer). Either way, once the second expression is evaluated, you will always get True, sinse "-1 <= 10" and "0 <= 10" both equate to True. Anyway, sorry for the long winded example, but is my theory correct? If so, then I would assume that the best way to achieve what I need is "If 1 <= x AndAlso x <=10". To be honest this situation doesn't come up that often for me, so it could be that the last time it came up I was using a language with different syntax rules like C# or C++. Thanks, Matt Tag: Is there anything vb.net cannot handle? Tag: 411328
  - 9
    - Dim lblTimeleft As Label = CType(e.Row.Cells(9).FindControl("lblTimeleft"), Label) Hi guys, I'm a bit of a newbie, but know VB Classic quite well. The above statement appears in some code I'm hacking, and I have added a column to the DataGrid (in the middle, so those to the right have had their index upped by one). Yet the statement above seems to still return the same value. Is the Index value (9) in the statement : CType(e.Row.Cells(9).FindControl("lblTimeleft"), Label) doing anything, or is the call simply going to the row, and picking the control from there ? Thanks in advance Tag: Is there anything vb.net cannot handle? Tag: 411323
  - 10
    - Save image to file from memory I am using a network camera that saves the image in a byte array in memory (via their ocx component, and in the OnNewImage event I can get the pointer to the image and the byte length as e.lFrmBytes e.lPtrToImage How do I get at that array in memory and save it to disk? It seems to suggest a pointer which is not supported in VB. -Jerry Tag: Is there anything vb.net cannot handle? Tag: 411321
  - 11
    - Overloading string split function Hi Is there a way to overload split function from system.string? Thanks Regards Tag: Is there anything vb.net cannot handle? Tag: 411318
  - 12
    - Activate Event Equivilent for UserControl? Hi, I have Windows Form with several User Controls embedded within. Only one user control is visible at any one time. The user moves through the various user controls by clicking Previous and Next buttons. What I want to happen is for the individual user controls to have the ability to set focus to a specific textbox control when the user control becomes active. Normally I would handle this sort of thing via a form's activate event, but user controls do not have this equivalent I've tried the GotFocus and Enter events as well but neither fires independently simply when the user control becomes the form's focus. Right now I have the textbox focus working - but only through calling it via the parent form (the parent form causes the user control to come to the forefront, then sets the focus). But I'd rather have the logic self contained within the user control. Is there some sort of Activate event equivilent for user controls? Thanks Tag: Is there anything vb.net cannot handle? Tag: 411316
  - 13
    - upload file By URL Dear Sir Thank Yuo for your help: i want to mak aspx page by VB.NET if this page requsted by url like "http://mysite.com/upload.aspx?F=C:\textfile.txt" so iwnt to use file upload control to uplad file C:\textfile.txt to web server ?? Thank Yuo again Tag: Is there anything vb.net cannot handle? Tag: 411314
  - 14
    - shopping to get beijing2008 tessera hap shopping to get beijing2008 shopping to get beijing2008 tessera hap golden suppliers,lowest prices .include shoes handbags burses belts t- shirt and so on . cover all brand products accept PAYPAL . (www.ec231- silkonroad.cn) Tag: Is there anything vb.net cannot handle? Tag: 411309
  - 15
    - shopping to get beijing2008 tessera hap shopping to get beijing2008 tessera hap golden suppliers,lowest prices .include shoes handbags burses belts t- shirt and so on . cover all brand products accept PAYPAL . (www.ec231- silkonroad.cn) Tag: Is there anything vb.net cannot handle? Tag: 411308
  - 16
    - = nothing vs. Is Nothing Hi guys, quick sanity check please. When TESTING for nothing, it's "if <expr> Is Nothing" when ASSIGNING, it's "<expr> = Nothing" correct ? so a line "If ThisValue = nothing" in some (inherited) code is a bug, plain & simple ? Thanks Tag: Is there anything vb.net cannot handle? Tag: 411307
  - 17
    - Why does CLick once insist on .net 3.5 Do you know that the datetime on your computer is wrong? Tag: Is there anything vb.net cannot handle? Tag: 411300
  - 18
    - ENCODING loss on Read and Write file hallo encoding loss here, i presume situation: Visual Web Developer 2005 creates a new html file with Visual Web Developer 2005 I write some odd chars the browser displays them good now: with vb code net (fx 2.0) I open the html file I add the "hallo" string in the Body section (near the odd chars) I save the file the browser doesn't display the odd chars (now I see only the ? char in their positions, that is the question mark) QUESTION: how to open and write a file keeping the original encoding (I think when managing html file the encoding offered by Visual Web Developer is the best and it is to be kept ) ? Or at least, never loose an odd char after Reading and Writing? Code, ideas, workarounds, external dll... everything is appreciated Tag: Is there anything vb.net cannot handle? Tag: 411297
  - 19
    - WinForm app speed issue Hi I have a multi-form winform database application. The client keeps complaining that application runs too slow 50% of the time. The problem seems to be in two areas; a) app is slow maximising after a prolonged period of being minimised. b) when user clicks on a toolbar to select one of the several already open forms. This seems to suggest that there is nothing wrong with application per se as application works fine 50% and also maximising app or moving from one open form to another open form does not do anything special code wise. Also as other non .net apps run just fine on the same pcs, this can't be due to spec of pcs. I have also ngen'd the app using command line 'ngen install myapp.exe'. I am therefore wondering what can be causing this slow response and would appreciate any help in ironing out this speed issue. Many Thanks Regards Tag: Is there anything vb.net cannot handle? Tag: 411296
  - 20
    - Constant Expression Is Required Vb.Net 2008 I am trying to create an attribute of type Icon and have the following code: <AttributeUsage(AttributeTargets.Class)> _ Public Class PIMSGridViewIconAttribute Inherits System.Attribute '/// Private variables Private oPiGridViewIcon As System.Drawing.Icon = Nothing '/// Construtor Public Sub New(ByVal Value As System.Drawing.Icon) oPiGridViewIcon = Value End Sub '/// Public properties Public ReadOnly Property GridViewIcon() As System.Drawing.Icon Get Return oPiGridViewIcon End Get End Property End Class And then on a class I attempt to set it to an icon within a resource file with: <PIMSGridViewIcon(My.Resources.resIcons.Team)> _ However, this gives an error of "Constant expression is required.". Please can someone advise what I am doing wrong and how I can set the attributes value per class? Kind regards Rob Tag: Is there anything vb.net cannot handle? Tag: 411288
  - 21
    - How to display a resize handle in the bottom right corner of a form Hi All, I'd like to display a "resize handle" in the bottom right corner of a form like in the windows explorer for instance (the 3 diagonal lines in the corner). Can anybody tell me how to do that? Thanks JB Tag: Is there anything vb.net cannot handle? Tag: 411287
  - 22
    - EnumAvailableSqlServers and passing the name of the servers Hi! I have the following snippet that gives the name of the sql servers installed: Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'just list local servers, set to false if you want to see all servers Dim dataTable = SmoApplication.EnumAvailableSqlServers(False) lstServers.ValueMember = "Name" lstServers.DataSource = dataTable End Sub We have only 2 sql server where the client data reside, but then we have instances of sql installed in other machines. I only want to be able to show in my listbox for the user to choose, those with the sql part in their name. e.g. tg-ny-sql001 tg-ny-sql002 so the condition would be if the name has sql in it show it in the listbox. How can I achieve this with VB 2008 and using SQL Server 2000 in the first server and SQL Server 2005 in the second server? Thanks in advanced! Tammy Tag: Is there anything vb.net cannot handle? Tag: 411286
  - 23
    - ENCODING loss on Read and Write file hallo encoding loss here, i presume situation: Visual Web Developer 2005 creates a new html file with Visual Web Developer 2005 I write some odd chars the browser displays them good now: with vb code net (fx 2.0) I open the html file I add the "hallo" string in the Body section (near the odd chars) I save the file the browser doesn't display the odd chars (now I see only the ? char in their positions, that is the question mark) QUESTION: how to open and write a file keeping the original encoding (I think when managing html file the encoding offered by Visual Web Developer is the best and it is to be kept ) ? Or at least, never loose an odd char after Reading and Writing? Code, ideas, workarounds, external dll... everything is appreciated Tag: Is there anything vb.net cannot handle? Tag: 411281
  - 24
    - clearing a combo box... I have something strange going on - pretty sure it used to work before - and now it does not... Why does the following code not clear a combo box? Me.cboLocation.Text = String.Empty OR Me.cboLocation.Text = "" Neither of the above works. The combo box contents remain exactly the same after running that command... Help! Thanks, Brad Tag: Is there anything vb.net cannot handle? Tag: 411277
  - 25
    - Split function question Hi I have written a Split function which in turn calls the standard string split function. Code is below; Function Split1(ByVal Expression As String, Optional ByVal Delimiter As String = " ", Optional ByVal Limit As Integer = -1, Optional ByVal Compare As CompareMethod = CompareMethod.Binary, Optional ByVal MaxLength As Integer = 0) As String() InAr = Expression.Split(Delimiter, Limit, Compare) End Function My questions are ; 1. Passing the Limit parameter causes a runtime error as the default for Limit (-1) is not acceptable. What is the problem? I have a feeling the syntax of split function in MSDN (http://msdn.microsoft.com/en-gb/library/6x627e5f.aspx) may be out dated. 2. How can I overloaded my split function with standard split function so I can use is as St.Split(...)? Thanks Regards Tag: Is there anything vb.net cannot handle? Tag: 411273

Are all the .net languages the same in their capabilities or should we
stick to c++ for the really sticky problems? Is it the language or the
underlying .net framework that is important?

K.

Top

Re: Is there anything vb.net cannot handle? by Cor

Cor
Mon May 12 05:20:55 CDT 2008

Kronecker,

There are in versions visual studio 2K* 2 versions of C++, a Net version
and a MFC version.

You can for sure not do everything with Net languages, by instance no PHP,
Flash etc.

However you are a master in sending questions which are completely unclear,

So what is a sticky problem in your eyes?

Cor

<kronecker@yahoo.co.uk> schreef in bericht
news:4c189956-520a-48a5-8995-143e67e453eb@h1g2000prh.googlegroups.com...
> Are all the .net languages the same in their capabilities or should we
> stick to c++ for the really sticky problems? Is it the language or the
> underlying .net framework that is important?
>
> K.

Top

Re: Is there anything vb.net cannot handle? by Phillip

Phillip
Mon May 12 05:35:27 CDT 2008

On May 12, 9:35 am, kronec...@yahoo.co.uk wrote:
> Are all the .net languages the same in their capabilities or should we
> stick to c++ for the really sticky problems? Is it the language or the
> underlying .net framework that is important?
>
> K.

Unmanaged C++ can do a lot that pure .NET languages such as VB cannot.
It can perform it's own memory management and run completely
independently of the .NET runtime. It can also do more low level
things such as a Shell integration which .NET languages are incapable
of. C++ runs on Unix, Mac and Linux based systems as well.

In terms of writing desktop business applications, C++ cannot do
anything which VB.NET cannot do. With VB.NET it is generally quicker
to write and easier to debug as well. However unmanaged C++ is "the
choice" for writing computer games (especially fast moving ones with
high variable fps).

Top