My app currently uses Interop.ADODB.dll to retrieve data from an access database.My compiled setup file has to include a Interop.ADODB.dll file for the software to work.What would i have to do in order to convert my app to drop the interop file by using Ado.net instead?Would it simply be a matter of changing the references and connection strings or does it involve alot more than that?
View 3 RepliesHow can i add Interop.ADODB.dll to my references as i cant seem to find it when i try?
View 3 RepliesThis program has worked for a year. It is stored in a remote server and triggered to run by the client.At least till this last build. Now the report cannot find the dll. I placed it in the same folder of the server with the exe and have copy local set.
View 3 RepliesHi, I'm trying to receive email in vb.net and I found a great tutorial on how to do it. However, I need a component named ADODB and Interop.MAPI.dll to do so. Where could I find either component?
View 8 RepliesI'm getting familiar now with using the Dataset Designer and how it makes for quick and easy updates and query of tables. I use to use the OleDB commands and leave the Connection String as a Global Constant so I can easily change it if the server name changes, or if we have to re-direct the .NET to another instance of the database.
But now that I use the Dataset designer I'm concerned that I maintain flexibility and support in the long run. how the Dataset designer works and where it stores it's connection string info? And how difficult that would be to update. It looks like I modify the App.config file, but I'm unfamiliar with this.
What am I getting myself into? It looks like a standard XML file. Is that it?
I have something strange occuring. The following code works 100% when run in VB2008 Express.When compiled and run onthe same system, it generates the above message.The codebasically opens a Access DB and loops thru the db There is a progress bar (also tried a simplelabel) to display progress using AbsolutePosition.
dbInUse.Open("Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:SCDBv4DataSCDBData.mdb")
rsInUse.Open(OpenCommandSQL, dbInUse, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)
[code]......
I'm facing problem while reference vb6 dll in .net project. When ever i refer a vb6 dll in .net project the interop dll is created with same version(1.2.0.0). Its creating problem for me as the setup used to deploy the application at client side does not replace the dll if the version is same as before. I want to change the version of the interop dll (created using vb6 dll). I read it cam done using tlbIMP but how to create tlb file for vb6 dll.
View 2 RepliesCurrently in our VB.Net windows application, C libraries are present under the 'bin' directory but we want to store it under application root directory where other forms and classes are present...How can we do this in Vb.Net 2008?
View 1 Repliesi 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)
I am communicating with a USB-HID device. It will successfully complete hundreds of send-receive requests but occasionally get a Null Exception error.
[Code]...
at the rxData.dataPacket(i) = element I will get a NullReference error every now and then. I could enclose it in a try/catch statement, but I'd like to fix the root problem if possible.This device is communicating to microcontrollers, and it is possible that they won't always give a value... but my feeling is this is some sort of UI threading issue. When debugging, even though there is a null exception, many times there actually does seem to be data in dataReceived.data.ToList(). Is there an easy way to place the whole data processing routine on a thread separate from the UI?Edit: Changed code to match answer and give more info on where it is used. Still get NullReferenceExceptions after about 1,000 completed send/receive requests to the HID device.
I have always wondered about this and seen this among lots of programmers. Why is a VB programmer or VB code easily dismissed as too noobish and easy while the same does not apply to Python or Python code? After all, isn't Python as easy as VB is? And it does provide drag-n-drop GUI application building also. So why is it that VB is flamed and yet Python is not?
View 1 RepliesI've been trying to play with DirectShow but it's getting on top of me and my question on here didn't answered so I'm thinking maybe I should go with a different approach. (DirectShow VB.net can't change recording format). <- Where as that 'works' I can't get it in the format I want it, and I don't really understand it so I'd obviousl like to go down the route of something I can get my head around.
I've googled till my fingers are raw trying to come up with an easy way to record video in my vb.net application, it doesn't have to be fancy, just a preview with a start record, stop record button, that's it.
iam very keen to learn vb.net 2008 so please suggest me how to access world most and best free of cost reading material available on net for reference.and free best book available for vb.net 2008 on the net. there is any complete source code available for consideration.
View 2 RepliesLets say I have 30 text fields in a Frame on my form, and I want to set them all to disable (so users can't edit them).Is there an easy way to walk through those fields without having to create an array of text fields?
I.E., in ... VB 6, with an array of text fields, I can do something like this:
For i = 0 to 10
txtfield(x).enabled = true.
Next i
Is there something in VB.NET where I won't have to use an array of controls, something like this (assuming all txt fields are in a frame):
[Code]...
I'm running stored procedure from asp.net front-end but it's quite long. What is the easy way on running that thing in the background? I mean if I close the browser, I still want my stored procedure to complete not just die. Also, I would like to perform other actions on the front-end while my procedure is running.
View 3 RepliesIs there an easy way to encrypt things? Here is some code I got:
[code]...
I have 2 datetime components in my application. [code] How do I do it? How do I get it so my 2 datetime controls display the current 24 hour time?
View 14 RepliesDim energybar As New Rectangle(9, 154, energy, 21)That is my new rectangle, now when I draw it e.Graphics.FillRectangle(Brushes.Blue, energybar)It says there is no width but the integer energy is = to 100...now, how do I fix this? It but be somewhat simple.
View 1 RepliesI have been using what I think is a simplistic and easy way of reading and writing to/from the registry but whenever I look at code I keep seeing links to DLL's and constant decorations and lines and lines of code.[code]
View 2 RepliesI saw another forum which discussed how to detect whether a LAN was connected, but I need to know whether my Internet connection from my ISP is up or not (I'm writing a program for day trading, so knowing if my internet connection is down is critical). I know I can simply open a browser in VB and browse to a site and see if it doesn't come back "page not found", but that involves a fair amount of overhead, and if the internet is down, it often takes many seconds to a minute to come back with "page not found". Is there some simple command that will quickly tell me that my internet connection is working? I'm using VB in VS 2008, and currently using XP although I plan to convert to Windows 7 in the next couple months.
View 3 RepliesI want to have a one second pause after some code has run. During that pause, if a certain key is pressed, I want to do some action. Otherwise, I want the code to continue as normal. What would I use to replace the comments in the following code?
myTestCode()
' Wait one second and see if a given key was pressed.
' If specific key is pressed, then show messagebox (or whatever) asking user if we should cancel (whatever)
NextMethodToRun()
Yes, I know there are a number of ways, which is why I am looking for something that is fast and simple to use. I do not want a console window, some other form, etc. to appear. Just want to check if a key was pressed. The key (if pressed) should be pulled off the keyboard buffer.
Dim lines As String = System.IO.File.ReadAllText("C:12345.txt")
Debug.Print(GetLineWithText(lines, "swf"))
[code].....
After we finished make a project , we need to make setup file right ? is the setup file contain all the component we use in our vb.net ? like Crystal Report component
View 1 RepliesI want to create a document, nice and easy like a word , or a rapport in access and .just it is easy to layout and so on.
View 5 RepliesRan across a snippet a while back but can't seem to find it again. Was very short and simple and detected all versions using version major and minor.
View 4 RepliesI use this code given by .paul
Dim ms As New IO.MemoryStream
PIS.PictureBox3.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg)
dsNewRow.Item("picture") = ms.ToArray
[code]......
I am brand new to VB2008 from VB6.I am trying to connect to my remote mySQL db and simply display a record into a label.Here's what I have on Form Load.[code]
View 4 RepliesI have founfd numerous ones on the net, but they all only do these complicated RegEx for zip codes, html, address, credit card numbers, etc etc,All I want to accomplish is when the user searches for "commend", they get only every occurence of the word "commend". NOT commendeth, or commends, or some other variation.[code]
View 3 RepliesI have an error while using a collection that has been stumping me for years.I wrote a class to allow users to write equations in a txt file using RPN (stack based notation).The class runs through a select statement while reading the equation and then ends up with a final number as the answer. I have a collection to place these objects in for easy reference. For whatever reason I get random object reference not set to an instance of an object errors when there is nothing in the program that would remove objects from the collection, kill objects, or change the collection in any way. It is possible for one thread to call the calculate function while another thread calls the CurrentValue property. I'm not sure if this could be causing the error, but once it happens I get an error every time the program enters that code until I run out of memory.
[Code]...
I need to develop a simple radio message logging app for use on a small military exercise.Now, the app is quite simple in itself, it needs to let me easily submit a new message report simply containing "from", "to", "message", "category" (and timedate, etc). Now the problem is that I have no experience with programming anything up against a database. I know basic SQL but I just dont know how to work with databases programatically. What kind of local SQL database solution works best with vb.net and Visual studio? Maybe I should use an Access database instead?When I click submit (on a new message report) how can I make an entry in a local SQL database of some sort? How can I load up a list of the message log entries already made in a listview or something?
View 3 Replies