I'm writing a small iframe-hosted XBAP that needs to inteact with the host page.I've first wrote a small POC to see that all I need is possible.Here's the code of the page constructor:
Public Sub New()
' This call is required by the designer.
InitializeComponent()
Try
[code]....
This happens in IE 64-bit, with IE 32-bit the whole XBAP fails to load (even before the alert line).
i'm creating a simple wpf browser application in vb.net.. my current problem is i don't know how to redirect a page using a hyperlink, being a newbie in the language.[code]
View 2 RepliesHow can i include an external file in a XBAP application? For example a .dat file where i need to extract some data from? I want everything to happen inside the .xbap file, is that possible?
View 1 RepliesI have been investigating this for several hours. I have found numerous links, including several here on SO which claim to show how to find the startup path, or the application directory. All of the solutions suggested return a location:
C:Users<my user name>AppDataLocalApps2.0XO8PWL8B.5HH1GZX7M0H.N1J<temp location>
When my WPF xbap is run from a remote location. I need to determine the actual folder of the remote location. I am deploying this to an internal server ABCDEF, so in order to run this application I am entering:
\ABCDEFmyApp.xbap
I want to programmatically determine the server and folder. My reason for this is that each time you publish a WPF with "automatically increment revision with each publish" turned on. The folder where additional DLL's are located changes, additional programs that this program depends on. I want to be able to dynamically determine the correct folder to look at.
I have tried:
'Dim path As String = Reflection.Assembly.GetEntryAssembly().Location
'Dim Path As String = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location)
'System.IO.Path.GetDirectoryName(System.Reflection. Assembly.GetExecutingAssembly.Location)
'application.StartupPath
All of which did not work.These links suggested many of the methods I have tried:
Link1
Link2
Link3
Link4
Link5
i want to write a small app which enables the user to burn some files on cd/dvd. Something like:
- Make an export from related DB Tables with informations
- Collect customers informations
- zip everything
-burn on cd (its a settlement related tool)
This might be a bit of stupid question but I need some clarification. I'm somewhat new to .NET and have created a EXE that had to reference an existing COM DLL. In doing so, Visual Studio 2010 automatically created an "Interop" DLL that it needs/uses to work with the legacy COM DLL.
I have deployed my project and included this Interop DLL with it (in the same folder) and everything is working fine. However, I have other applications that will need to use this same legacy COM DLL. Is it okay to reference it they same way in each application and keep deploying the "Interop" DLL with each application? Unfortuantely, all of these small applications go in the same folder and each use the same Interop DLL (so it will already exist there if it's used by another app.) I'm forced to having them in the same folder because these applications are being called as a way of customizing a parent application. As such it only looks in it's local folder when it wants to run a "custom" app. I'm just concerned if one the EXE's is ever removed and they take out the Interop DLL, then the others that still depend on it will fail.
So, I was wondering if it is possible or a good idea to put that Interop DLL in the GAC? I went ahead and installed the Interop DLL into the GAC and then removed the Interop DLL from the folder where my EXE runs and it failed to work. I get an error that says "Could not load file or assembly". I'm stuck on getting this working.
Do I need to reference the Interop DLL in my project differently such that it's now from the GAC? or Do I need to add something to my .NET code like Assembly.Load to make it work? Do I need to create that Interop DLL myself using TLBIMP?
What is COM Interop? Please remember to mark the replies as answers if they help and unmark them if they provide no help.Welcome to the All-In-One Code Framework!
View 1 RepliesI 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 RepliesWhy 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
I'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 am using Interop to read and write to excel but I'm having some problems writing to excel... When I enter the information I need to be written on the excel in an inputbox, this pops up "COM object that has been separated from its underlying RCW cannot be used."Heres the Code:
Code:
Private Sub editmodelbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles editmodelbtn.Click
[code].....
I am trying to use a 3rd-party Interop assembly called SmartWIM.
I have added it as a reference and added an Import statement
Imports SmartWIMLib
I then initilalise it with
Dim objSmartWim As New SmartWIM
All pretty standard stuff, I've done this countless times with Interops. However, whenever I try and use any methods I get the following error [code]...
I'm kinda new to using VB.NET and certainly with the Excel Interop.I have the impression that I'm doing something wrong in these simple procedures. I keep getting errors on them:
[Code]...
The first procedure fills a combobox with all the worksheet names of the workbook.The second procedure copies all cells in the selected worksheet to an array.The error is the following: System.NullReferenceException: Object reference not set to an instance of an object.I think the error is in the cleanup part, when I set the objects to nothing and close everything. Can someone confirm if this is good or wrong code and maybe point me in the right direction?
I Programe a COM Library in VS2008 to use in Excel , but I'm stuck with an error that I don't understand.
I use this two classes , that compile and register OK. One Class QBitems return a nongeneric collection of QBItem but when I tried to use the Add and/or Remove Method, I receive the following error in Excel VBA :
Run-time Error '438': Object doesn't support this property or method.
I added a class (SImpleClass) in the library and I called from VBA it returned the QItems collection without problem.
NEW: When I replace the QBItem object with a string in the Collection QBItems everytthing works OK. It looks like interface doesn't like to pass an object like QBitem class
Excel/VBA:
Sub Pru()
Dim obj As New CollectionCOMClass.SimpleClass
Dim Itms As New CollectionCOMClass.QBItems
[Code]....
I have a .NET application that interops with a VB6 COM DLL. After installing the application on a Vista machine, I try to execute the code that consumes that COM component and I get an error attempting to read or write protected memory. The system's DEP is set to only essential programs and services, but apparently that automatically applies to .NET applications. When I tried to exclude the application from DEP, it said that DEP must be on for this program (could not be turned off). I had to use the bcedit.exe program to manually turn DEP off system wide and then reboot. After that, the application ran without a hitch, but this is not the route we want to go for our users. Are there any solutions/recommendations for this? It seems as though DEP has been more of a headache than not.
View 5 RepliesI 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]....
