Why is hi failing to even hit the event? This should be htting the event, I see no reason why it would not hit this event when I press the enter key, instead I get a beep sound.
Private Sub Browser_1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Enter Then
WebBrowser.Navigate(tb_Address.Text)
End If
End Sub
My application's binary serialization was working well up to today (this is not a released app yet - still in development). I have a "Project" class that is the top-level class of a hierarchy of other classes related to its function. And before you think it, yes, all of those classes are marked as serializable. Infact, they all were being serialized before today.
I have one event on the Project class that assists in informing when the project's save status has changed (i.e. new, modified, saved). This event was added today along with some events on the other classes that filter up to the Project class (the project needs to be told when its objects have been modified). I unfortunately added all of this at the same time so I can't provide any incremental details as to when it stopped working, but when I try to save the project through my binary formatter it tells me that my main form is not marked as serializable. Well, yeah... of course it isn't! it shouldn't need to be because there is no member of my classes that even mentions the form. But for some reason handling the Project's event on the form triggers this error.
Serializing the form is not a solution. Neither is not being able to handle my Project events. If I comment out the handler it works fine -- and I don't even have to remove the WithEvents keyword on my form's Project variable. Now that I write that I'm speculating that it may have to do with the event being raised as a result of the serialization (occurs when the save button is clicked).
I've read thru Iceplug's tutorial on control arrays and got it working. I tried to add a new event by basically copying his click event code and calling it a doubleclick event. I used the proper addhandler and assigned the correct name to my sub. I have the click event changing the background color to blue and the doubleclick event changing the background color to green. The background color does not change to green. Why?
Heres the tutorial with my new code encased in asterisks ...
Code:
Imports System
Imports System.Windows.Forms
Public Class form1
[CODE]...
I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.
View 2 RepliesI'm trying to validate a few things in a form I'm building. It has a datagrid with clients info (taken from an access database) and a few textboxes where the user can type some search criteria. The thing is that those same textboxes are used to add new clients to the database and to modify a client's information if one from the datagrid is selected, so I made it that the buttons to insert and modify clients are disabled on load and thenevery time the text on a textbox changes ("TextChanged" event) they become enabled. So far so good. But then I wanted to make it so when a client from the datagrid is selected both buttons become disabled again until the text on a textbox changes (to make sure they're adding a different client and not the same one that was
selected).
I tried using the CellClick event from the datagrid to disable the buttons, but since every time a client is selected from the datagrid the info is shown on the textboxes, this triggers the TextChanged event too, and the buttons become available.So, is there a way I can tell the TextChanged event not to be triggered when the CellClick event occurs?
I have a VB program that I'm trying to deploy. On my machine (the app works fine straight from VS), when I try to install it from the webpage, it asks me to setup .net. I only have a choice of repairing or uninstalling .net. I've tried both but both fail at the moment. The problem with the repair is, although it goes through the entire repair procedure, it then asks me to restart my PC, but when I hit 'restart', nothing happens. So I restart manually, but when I try again, I just have to go through the same procedure again.
View 2 RepliesAll 3 statements below do NOT download the file; BUT also do not create any error msgs! owever, when pluggingFTP://localhost/QMSpathFTP/Prozess Akquisition.doc directly into the IE the .doc is shown correctly! I.e., to me, the virtual directory 'QMSpathFTP' is correct!
View 2 RepliesI'm trying to write a program to control input. Unfortunately, thing always seems to fail.
The thing always comes up with "Application Defined or Object Defined Error". It doesn't help that I can't find the complete listing of error codes[code]...
The following code works fine in Access 2007 but VB 2005 Dataset refuses to see it. 2 questions Why? and how do I call a function in a Tableadapter query? "sizecats" is a function that extracts a substring depending on the length of ContainerRef.
SELECT sizecats([ContainerRef]) AS [Size], Count(tbl_Bookings_Containers.ContainerUsageID) AS CountOf
FROM tbl_Bookings_Containers
GROUP BY sizecats([ContainerRef]);
I use vb.net to backup sql '05 - '08 databases. It works great on smaller databases. but when it comes to large databases it fails at 30 or 40 percent with the error: The backup or restore was aborted.
Dim objBackup1 As Backup = New Backup() With {.Action = BackupActionType.Database, .Database = Common.DsSettings("DataBase", Nothing), .Initialize = True, .Checksum = True, .ContinueAfterError = True, .Incremental = False, .LogTruncation = BackupTruncateLogType.Truncate}
objBackup1.SqlBackup(objServer)
I am trying to flatten a multi-dimensional array with ConvertAll but I can't get it to work:
Private Function Flatten(ByRef a As Object) As Object
Dim elements As Integer = 0
Dim size As Integer[code]...
Why does it throw NullReferenceException?
I wrote an application on windows XP using visual studio 2008. Based on the .net framework 3.5. For some reason that I do not understand the application refuses to run on windows 7. You would think that if the .net framework 3.5 was installed on the windows 7 machine it would run.
View 10 RepliesI'm catching the following error in a publishing script (VB.Net) I'm running:
Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
The code that fails is:
My.Computer.FileSystem.WriteAllText(path, content, False)
It runs fine for most of the files but some have a '~' in the path and those ones are all failing.
Just to clarify: i am using the full path an example of the path i am having problems with is "c:/websites/xml/myfile~test.xml" the ones that work are "c:/websites/xml/myfiletest2.xml"
I currently have this line of code which has been working for the past 6 months:
If IsNumeric(txtProductID.Text) Then
...do stuff
Else
Dim msg As String = "Error!"
End If
All of the sudden, no matter what kind of entry is put in txtProductID (including plain numbers), it fails! Is there reason for me to be going crazy over this?
I am currently using the AsyncFileUpload in my VB.NET web app. Locally it works perfectly, however on the server it fails to upload a small file (<9k). I can't even seem to debug this as in JavaScript handlers I have no idea as to how to get the error reason.
function uploadError(sender,args) {
$get("<%=LabelErr.ClientID%>").innerHTML = "Unable to Upload file for the following reason: ", "<span style='color:red;'>" + args.get_errorMessage() + "</span>";
[code].....
A VB2010 program fails to build because it doesn't recognise left() and right(). mid() works, though.
Microsoft.visualbasic.left() works ok.
Yet, in another VB2010 program, left() and right() work ok.
I have just finished my application using VB in Visual Studio 2005 and it works fine on my Win 7 development machine. But when I install and run it on an XP machine it fails with an unhandled exception:System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {E8D851FA-9967-4ADF-9644-0183B9B1EA68} failed due to the following error: 80040154.
I've googled the error message and the solutions seem to be 1) compile as x86 (was doing that anyway), and 2) register the dll on the machine But firstly I'm not sure which dll I need to register, and secondly I don't want to be going around registering dlls - the whole point of the installation programs is that it should just install and configure everything automatically..
I am getting one issue while working with DTS Package using VB.Net application. I am using the following code to execute the DTS package.
[Code]...
My problem is that when trying to print out a excel worksheet, after it has just beeen printed out onces. It gives me this error: "Object reference not set to an instance of an object", when trying to open the existing worksheet(the template)
I've really tryed to fix it, I think that the problem is that after the first print, i need to clear the worksheet and the excelapp.[code]...
I am trying to insert a picture in the RTB but my system hangs when I try to do it... No error message... it simply hangs... I also get a tough time calling the Task Manager to end it...
This is the code that I am using...
Is it going into an infinite loop?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles Button1.Click
[Code]....
RegQueryValueEx function fails in this program
Module
Module1
Public Const HKEY_LOCAL_MACHINE = &H80000002
Public Const KEY_ALL_ACCESS = &HF003F
Public Const REG_OPTION_NON_VOLATILE = 0
Key is preserved when system is rebooted
[Code]...
I am using the following function to backup a SQL Server database using SMO.. but the backup fails... I have no idea, why does it fail...
[Code]....
I am developing a vb script to query an Access 2000 database and return the data to a recordset and place it in to an Excel Spreadsheet. However I am not able to Complete the CopyRecordSet to the Excel spreadsheet I receive the runtime error "Microsoft VBScript runtime error: Class doesn't support Automation" at line "xlWs.Range("A1").CopyFromRecordset rs " [code]
View 6 RepliesI've been trying to convert some old VB6 code to VB.Net and ran into a programming problem. Basically the Set keyword from vb6 is no longer used in VB.Net 2008 and 2010. So with that said, this won't work in .Net, (assuming you referenced the ActiveMovie control type library in vb6, which is basically DirectShow):
[Code]...
Very simple update. It simply fails, no error, no change gets made to the database.Dim db As New BarClassesDataContext Dim foo = (From a In db.articles Where a.id = 14 Select a).Single Response.Write("<h3>" & foo.title & "</h3>") foo.title = "This is my new, updated title for article ID #14"
db.SubmitChanges()
Here is the relevent portion of my article class. Also, this is a web form so I have no console. Is there another way to view the T-SQL output?
<Table(Name:="dbo.article")> _
Partial Public Class article
Private _id As Integer
Private _issueid As Integer
Private _dateadded As Date
[Code]...
I have an issue with building a project using the MSBuild (ver 4) from the command line when declaring lambda expression like this:
Private Sub Foo(ByVal s As String)
Dim WL = Sub(str As String)
If Not String.IsNullOrEmpty(str) Then[code]......
I have an add-in that creates a form, adds controls to it, then tries to add some more. But on the second attempt to add controls, they disappear. If I have an error in my code that gets displayed in a message box I can see the new controls behind it. When I click OK they disappear. If I have no error and step through the code, they are there according to properties, although I can't see them because the form will not display while in debug mode. When the program finishes, th controls that were created are gone. Perhaps I am selecting the form to edit wrong.Too bad there isn't any documentation (or any than can be found) that describes how to do this.[code]...
View 5 RepliesThis assignment works for me TryCast(Me.NamingContainer, LDHello).ToggleChartConfigurationSections = AddressOf LD_SayHello whereas Dim objLDHello As LDHello = TryCast(Me.NamingContainer, LDHello) AddHandler objLDHello.LoveAndLoveOnly, AddressOf LDSayHello fails with an error message like LoveAndLoveOnly is not an event of Universal.LDHello. Visual Studio intellisense is able to pickup the event whereas the background vbc and build compiler are failing. When I need to stack multiple subscribers to the event I need to use AddHandler right?
View 6 RepliesI have a VB.net Solution in VS 2008 with 2 projects in it (The machine is running Windows XP Professional). I can build the one project fine. The other one the build keeps failing. Their are no errors in the code. I don't get any message when the build fail except, VS ask me if i want to run the last successful build. I have tryed cleaning the solution and then building and rebuilding it.
View 1 RepliesI added a setup project to a winform vb.net app which otherwise builds fine. Once the setup project is added to the solution, however, the build fails with the following error;Unrecoverable build error.As there does not seem to be much information I can't figure what the problem is. What can I do from here to fix this to get deployment package?
View 1 Replies