WebDAV & Exchange 2003 - Works In Debug, Fails Without?
Sep 23, 2010
I am writing some code in VB.Net under .NET 2.0 which interfaces with MS Exchange 2003.Because of the Exchange 2003 "requirement" I am forced to write this code using WEBDAV.The code itself is replicating, to some degree,a schedule management process.It's creating Appointments on the Exchange Server in response to inputs from the user and managing it's data internally in a SQL Server database.The problem situation is this: A new person is assigned to be in charge of a meeting. The requirement says the program should generate a meeting cancellation request to the person removed from the meeting (if such a person existed) and a meeting request sent to the new person.In the case of there being an existing person, what appears to happen is this:
The meeting cancellation request
gets sent Exchange barfs and returns status code 500 (internal server error) during the set of requests which send the meeting request to the new person.However! While debugging this particular scenario, it works just fine for me, if I step through the code in the Visual Studio debugger. Left to it's own devices, it fails every time.Just for yuk's sake, I added a Thread.Sleep(500) to the part after sending the cancellation request, and Exchange doesn't barf anymore...
So, my question! If adding a Thread.Sleep to the code causes this error to go away, a race condition is implied, no? But, my code is running under a web application and is a totally single threaded process, from start to finish. The web requests I am sending are all in synchronous mode so this shouldn't be a problem. [code]....
...but a lot of the implementation details are hidden here, as I wrote a set of classes to interface with Exchange WebDAV.
6 program to VB .NET 2008 that had code that used the CDO 1.21 DLL to validate if a mailbox entered existed on an Exchange server. I saw the one posting from Microsoft that states that CDO is not supported on the .NET Framework. As this is a client application, the article recommended using WebDav to interact with the Exchange Server.
I'm wondering if anyone knows how to connect to exchange server via vb.net.
I need to create a program that imports data from a calander in exchange server 2003.
(The idea of the program is to imput sick and holidays into a calander and get the vb.net program to read in all the data and store in a database for future use and reporting etc)
I have a requirement to query Exchange Server 2003 for some specified user accounts and to retrieve all calendar appointments for a given date range.I've had a look at various articles on the Internet but most relate to local installations of Outlook (not Exchange server) and others are in VBScript (in this case, which doesn't convert well to .NET).
i want to send mail through my exchange server 2003 using visual basic 6.0, can any one guide me through the process how i can do this, i am using windows XP at client end.
This 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?
I am replacing an AutoHotkey script with a VB.net application. Part of the script involves sending keystrokes to an active application. VB uses SendInput and does send the keystrokes, but the application doesn't "get" them, but when AutoHotkey sends the same key to the same application, it works. I have verified that VB is indeed sending the keys properly. Does anyone know how to imitate the autohotkey Send function?
I find this behavior of TryCast in .NET 4.0 / VS 2010 rather confusing. In my understanding TryCast works like DirectCast, but will return Nothing instead of throwing an exception if a cast is not possible. VS 2010 / .NET 4
I am setting attributes for SmtpClient in program. It works fine in windowsxp but in windows7, it does not work every time. Some time it works and some time fails with failure message. Is there any known issue with SmtpClient in windows 7?
I have a simple unit test which tests that a validation function picks up a specific validation issue. The validation item returns a simple object with Item & Message properties. I've written a unit test for this function but this always fails even though I know the function works as expected.
<TestMethod()> Public Sub ContractNote_ValidateForManualInputTest_TradeOrderValueComparison() 'Can't get this test to work even though validation works! Dim CN As ContractNote = New ContractNote Dim Trade As New TradeOrder
[code].....
I've implemented IComparable on ValidationItem (I have a separate unit test which confirms this works). Am I Using CollectionAssert correctly?
I receive this error: [code]whenever I run a query via a visual studio project in vb.net. If I run the same query via Open Office Base, it takes a long time but it works. How do I go about troubleshooting whats causing this?
Enviro: 2007 Exchange Server, 2 Intranet servers (1 deploy, 1 dev) running .NET 2.0 app - all within same network / behind firewall. I am working on a legacy app by our previous web guy, when our sysadmin upgraded to exchange 2007 and put it on a new server all of the mail functions in old app broke. Had to upgrade to .NET 2.0 (from 1.x) and nothing worked untill I tried new SMTP code in a local function in the codebehind of a page of the app instead of calling a class, as follows:
Function SendNow(ByVal strFrom As String, ByVal strTo As String, ByVal strSubject As String, ByVal strBody As String) As Object Dim msg As New MailMessage() Dim smtp As SmtpClient
[code]....
So the above works fine, in that file. The problem is that the app was designed to call a class that resides on the dev server. When I move this same code into the class on the dev server I get transport errors. I think this has to do with the fact that we're using integrated authentication with impersonation=true and it seems to get dropped due to the class being on a different server (even though it's behind our firewall).
I could either try moving the classes to the production server or somehow keep the authentication in the class working through the hops. Either way I need to keep the class because it's referenced all over the place (in more than just this app). I am not that savvy in .NET and I cannot figure out where the setting is within the app that defines where the class is imported from. It just seems to be available no matter where the app is deployed. (Working files are on same server as classes, then publish the app to production server).
I have a Dll project written in VB.Net 2003 which compiles a Dll used in other projects. I need to debug this Dll while it is being ran in the other project. Does anyone know how I can do this, or do I need to integrate it into my other VB project somehow before I can debug it?
And here I am with a new problem in my program When I debug it everything works fine (the buttons, progressbars, pinger, spambot,When I compile it and run the Executable file, it works too.When I run the Executable file on another computer (tried on 4 different ones) the program stops working and I get this error: {$ exception. "Failed to create the form For more information, see Exception.InnerException error: File or assembly \." Microsoft.VisualBasic.PowerPacks, Version = 9.0.0.0, Culture = neutral, PublicKeyToken = b03f5f7f11d50a3a \ "or one of its dependencies not found. The system can not find the file specified .."} System.Exception {System.InvalidOperationException}
I am developing an application using Visual Basic .NET 2005. The application works fine in the PC which Im using to develop it. I make the setup.exe I install the application in other PC and the application doesnt work but it I replace the app.exe with the one in my debug folder it will work.
for some reason this works perfectly, when i do it in debug mode it adds the tasks to stagingtable, and then transfers none duplicates to the regular table. However, when i upload it to the server it does not work.
Using bcp As SqlBulkCopy = New SqlBulkCopy(connstring) bcp.ColumnMappings.Add(0, 1) bcp.ColumnMappings.Add(1, 2)
After compiling the project it works fine on windows 7 32bit and 64 bit but will not work on server 2003 or xp clients have not checked vista yet, i have verified that .net 4 is installed and i can tell you that i do not get an error message when installing apart from the icon that i have given the project does not appear and is a blank icon on the desktop. When i try to run the program it will try to start i see the service in the task manager and after a while it will error out and crash. I can see the memory usage go from 20,000K to 70.000k.
i create a simple webbrowser in a form , it works perfect on debug mode , but in release i always get this page cant not be displayed , no matter the website.
I have a Form with a Media Player in it. Which plays a Song.
[Code]...
It's playing in the background since the Form is hidden. When I play itin Debug, everything works fine. When I run the app outside Debug, I get this error: [URL] The Music File is there, but strangely, there comes this weird error.
I'm converting an application from using WebDav to EWS. I'm now in the process on converting the code the fetch contact.I notice that the property from WebDav were found by using
I am trying to learn more about webDAV and .NET. I have written an app that needs to pull all e-mails from an inbox on the server. I need to load these e-mails into an object that has the following properties:
- From - To - Subject - Body
[Code]....
Is there like a urn:schemas:httpmail:subject or something like that where I can pull the subject line out? this is the way that I have been told to interact with the Exchange server so if anyone can shed any light on how to modify the above code to add a subject node and WHY - I am sure I can figure out how to modify it further to meet my needs.
So just to be clear, my question is this:
How can I modify the above code snippet to also include the subject line of an e-mail pulled off an Exchange server?
I'm looking to develop an application in vb.net which can connect to a WebDav enabled web server (using WebDav with login credentials) and upload desired files. Could anyone give me an example on how I can accomplish this task?
I am trying to upload file to sharepoint. Authorization works fine, but it ends up with status OK instead of CREATED. Eventually the file is not created. I do not understand why it's happening since I used approach that seems to work for others (no complaints).[code]...
