Has anyone ever received an "INVALID CONTEXT ERROR" while running a threaded VB.NET 2.0 application? We seem to be getting this error very sporadically, but can't seem to determine the root cause.
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When bulk renaming files (14000 of them) i get this error: The CLR has been unable to transition from COM context 0x4cefd8 to COM context 0x4cf148 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
My code is as follows:
Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim asd As List(Of String) = FileIO.FileSystem.GetFiles("D:Music").ToList
Dim rs As New ADODB.RecordSet("SELECT * FROM Songs", My.Settings.Files_Database__Connection)
[code].....
I got this message because of a long process: ContextSwitchDeadlock was detected
Message: The CLR has been unable to transition from COM context 0x3dc190 to COM context 0x3dc300 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time.
To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations. I've poked around on the internet and on a forum, someone suggested to use application.doevents(). I did that and the messaged goes away. In an earlier thread a member wrote that using application.doevents rarely was used appropriately. Is my situation a proper usage of application.doevents or is there something else I should be doing?
Private Sub lVW_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LVW.Click
With LVW 'LVW=ListVew Name
LVW.Text = .SelectedItems.Item(0).Text
[code].....
I recently upgraded a VB 6 project to .net. I'm having a problem with this block of code:
Dim CtrlName As System.Windows.Forms.MenuItem
For Each CtrlName In Form1.Controls
'Some code here
[code].....
my code is in test.aspx.vb is,
Option
Strict Off
Option Explicit On
Imports Microsoft.VisualBasic
Imports System
[code].....
for the above code i am getting the following error when i'm viewing in browser.can any one help me.
Error List:
Handles clause requires a WithEvents Variable defined in the containing type or one of its base types.
Context is not a member of 'test'.
Context is not a member of 'test'.
i am using vb6 and sql express. came to this error when i press the update button it says "compile error invalid qualifier". the error is at " live.tostring("dd/mm/yy") "
private Sub cmd_update_Click()
Dim conn As New ADODB.Connection 'ADODB Connection Object
Dim recset As New ADODB.Recordset 'Recordset Object
Dim sql As String ' String variable to store sql command
[code]....
I've had developing an old vb6 (sp6) app in my pc with winxp and running it in other with win7.
View 1 RepliesRun-time error 94 invalid use of Null
View 16 RepliesA VB5 program I wrote years ago stopped working and is now giving me this error:
Run-time error '380':Invalid property value
I cannot figure out what has changed, since I run that program almost daily. It was working fine, then stopped (without any changes to the program). I suspect I may have uninstalled something it uses, but cannot figure out what.When I open the VB5 IDE, I get an error saying:
'c:program filesdevstudiovbComct232.ocx' could not be loaded--Continue Loading Project?
If I say no, it does not load and I cannot see the source code.If I say yes, it does load and I can see the source code but I get weird compiler errors.
Trying to run the following
treeval = e.Node.Text
Dim strVal As String = New String("LDAP://10.22.67.21:389/OU=Linkway,OU=Desktops,OU=Devices,DC=domain,DC=suffix")
Dim domain As New DirectoryEntry(strVal & "'DOMAINusername', 'password'")
[code]....
I get an error saying "Invalid dn syntax"
I couldnt find any where else on this forum for C# so I just posted here because Im using Visual Basic C# 2008 Express. Im making my first game and Ive come across this error: The name 'UpdateInput' does not exist in the current context.
[Code]...
I get this error.. and I know the ip address is not valid duh! but it's a server it should be based on port only.
Error =
Errors at runProxy @ The requested address is not valid in its context
0.0.0.0:7900
[code]....
P.S.> my client I connect to 127.0.0.1 : 7900..I want it to re-route the connection to the txtIP.text : 7900 (txtListeningPort.Text)
I am trying to show a context menu when i click on the tray icon (mnuLeft for left click and mnuRight for right click)[code]...
View 2 RepliesI am getting the following error:
' ', hexadecimal value 0x1F, is an invalid character
Here is my function. I get this error when it hits "reader.MoveToContent()" for the first time. Can anyone point me in the right direction?
Public Function GetSyndicationFeedData(ByVal urlFeedLocation As String) As SyndicationFeed
Dim settings As New XmlReaderSettings() With { _
.IgnoreWhitespace = True, _
[code]....
I have been writing a security class in my application, I am able to encrypt the string correctly and without error. However every time when I try to decrypt this string again, i get an error with this as it returns the following Padding is invalid and cannot be removed.
Here is the code:
Public Function DecryptKey(ByVal plainText As SecureString, ByVal key() As Byte, ByVal iv() As Byte) As SecureString
Try
[CODE]...
And it provides a stack trace with:
at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast)
[CODE]...
I have found simular issues on web, and most of them say that the IV is not the same the encrypted version, but I can confirm that the IV is the same as they both access the exact same variable.
decryption error : Padding is invalid and cannot be removed.
View 1 RepliesI am getting Invalid Cast Exception was unhandled.Conversion from String 'abc' to type 'Double' is not valid in the following line!
If
((xlBook.Worksheets(2).Cells(iRowIndex, iColumnIndex).Value)) = avFoundKeywordds(iSearchText)
Then
The business intent is that user enters the keyword 'abc' and clicks search button . We have defined different keywords in a xls which has 1600 rows and 16 columns . so when finding abc in any of the cells ,it has to return the value of a column#4 where the name is specified !
Cross Thread Calld Invalid.txt?
View 1 Repliesi have a datagridview that show an access database also there is toolstrip menu i defined the datasource and everything is fine except that when i run the application and edit anything and when i press the save button on the toolstrip an error appear and highlight this: Me.TableAdapterManager.UpdateAll(Me.My_phone_numbersDataSet)
and the error is: invalid operation exception was unhandled
Iam getting an error "Old format or invalid type library" when im running the .net application in systems(pc) having MS Office 2000 versions.and im not getting any errors for higher versions like 2002,2003 etc.This error im getting when exporting to Excel.And i tried the following link [URL] Then also im getting same error.
View 5 RepliesI am using RijndaelManaged to encrypt just 4 bytes of data which produces a 16 byte result (i am using a 128 block size). When I try to decrypt these 16 bytes I get the message "Padding is invalid and cannot be removed.". (The base stream of the CryptoStream is a MemoryStream based on just these 16 bytes).
View 1 Replieshi,i am having a VB application in my system, which runs with absolutely no issues. But when i am running that EXE in some different machine i am randomly getiing a run-time error for a particular form.The error is like :Run-time error '30005': Invalid Argument valueThat particular form have MSFlexGrid and List box.As i cant simulate the same in my own setup, could u pls suggest the possible reasons?
View 2 RepliesI am running the same program on two workstations. One reveals no errors while the other shows a "COM exception error: invalid parameter." The offending line of code is shown below.Is there an explanation for the inconsistency?
.SeriesCollection(iRet).Name = "=""Q" & Str(iRet) & """"
I'm currently trying to create a NEWID() function in my DataContext in LINQ using the solution here, however, when adding the partial class to my DataContext.vb or a separate DataContextPartial.vb, I get the error System.Data.Function is not available in this context because it is 'Friend'.
I've come across this when accessing data types before and that was in easy fix of setting it to Public, but I'm not sure where the properties for function could be or how to change them.The code I have is converted to VB.NET from the C# in the linked answer above:
Partial Public Class CMSModelDataContext
<[Function](Name:="NEWID", IsComposable:=True)> _
Public Function Random() As Guid
[code]....
I am trying to convert this method to VB.NET but the online converters seem to make a mess of converting it. Can someone help:
C# original:
private IEnumerable<IGrouping<string, Reference>> FindReferencesWithTheSameShortNameButDiffererntFullNames(List<Reference> references)
{
[code]....
This errors on Where is not declared.I wouldn't have thought that the VB would not be that dis similar to the C# something like this:
Private Function FindReferencesWithTheSameShortNameButDiffererntFullNames(references As List(Of Reference)) As IEnumerable(Of IGrouping(Of String, Reference))
Return From reference In references
Group reference By reference.ReferencedAssembly.Name
[code]....
But I get: Definition of method referenceGroup is not accessible in this context.
Public Shared Function GetData(ByVal id As Integer) As List(Of SomeClass)
Dim command As New OracleCommand
Dim conn As New OracleConnection(WebConfigurationManager.ConnectionStrings("ConnectionString").ToString)
Dim param As New OracleParameter
[code]....
This function is giving an ORA-00911 invalid character error. I have other methods of the same style and these are functioning correctly.
I am having a small problem with dataset. problem defination is:
System.Data.OleDb.OleDbException was unhandled
ErrorCode=-2147217843
Message="Not a valid password."
Source="Microsoft JET Database Engine"
And My connecting string is:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source="D:Shop InventorydatabaseDATABASE.mdb";Persist Security Info=True;Jet OLEDB:Database Password=123456789"
WHERE the password I added is rightbut whenever I try to access is it shows error of Invalid Password;
I have coded it as:
'Me.SaleTableAdapter.Fill(Me.DATABASEDataSet.Sale)
Me.ReportViewer1.RefreshReport()
The following code produces a sound that's like a tone or a soft bell, indicating that an action has completed successfully:
System.Media.SystemSounds.Beep.Play()
Any code for the opposite? You know like if you tried to do something in Windows that was invalid. Is there some kind of default sound indicating an error that I can invoke on a Windows computer in VB.Net similar to the one above only discordant?
Error Dropdownlist has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value I have been banging my head over this error for about a week now. I have searched posted on other forums and still no solution to my issue. I have seen the FindControl being suggested but do not know how to implement this.
Basically I have 2 webmethods that reference 2 datasets which then populate my ajax cascading dropdownlist. In insertmode they work great however in editmode i get the above error.I have removed the selectedvalue and added
DataSource='<%# Bind("intRoom") which works sort of except for the fact that when you click edit it does not retain the original value of that particular record. Other things i have tried are as following:adding the items to the itemcollection of the dropdownlist turning appenddataitems to true on also tried to use the findcontrol but dont understand that punching my monitor and slamming my keyboard
Now I know i could get this to work by using a sqldatasource with some t-sql to get my dropdownlist to work however I thought by reusing my webmethods my code would be more professional. So if there is anyone out there that can help me understand why the value for my dropdownlist is not being populated or does not exist during gridview editing Also will post code if asked not sure what you would like to see rather than posting everything.
