i am new to working with databases, I have done some of my own research and have been adding and regtrieving records without trouble. Now I need to retrieve a specific record based on a selection made by the user. I found that the way to do it is with the WHERE statement and from examples i have seen the code below should be how it is done:[code]The problem I am having is that when i try to run the sub i get the error:Syntax error (missing operator) in query expression 'Show Name = Strictly Hip Hop'.The show name is in the database because that is where the data is retrieved from. All I am trying to do is populate a text box with information from the Host column when the Show Name column is the same as the selected item in the combo box.
If I have this to read from an access database, how could I translate it to read from an oracle database with the same table/field information? I know nothing about oracle but I assume I cannot use the oledbdataadapter that I am used to when connecting with an oracle DB.
I have simple application with MS SQL (.mdf) database. It's all works fine on my computer, but when I run app on another computer, and when I try to add new data I get error: "Failed to update c:\program files\..database.mdf because the database is read only".
The program is currently trying to pull information from three different database tables and compiling the information onto one screen, to do this i am using three different connections and a function to handle the data at each stage. The issue is as my code hits PageLoadStage of "2" and runs the QueryDatabase() Function i am encountering an error of: "OleDB exception unhandled: No value given for one or more of the required parameters." This occurs on line 15 of the first code snippet. Can anyone explain this and/or identify any code issues if that is the cause.
I am trying out the Visual Studio 2008 Standard Edition Setup and Deployment - Setup Wizard on a very simple VB 2008 app which includes a simple SQL Express dB. The build works fine and it installs on the target system ok. But when I go to run the application and add a new record for example, I get a "read-only" error indicating that the sql db is read-only. Yet none of the files in the folder are read-only. What is odd is that the folder that it was installed into "acts" like it is read only, yet it is not identified as such. If I move the .exe and db files out of that folder, (onto the desktop for example) it works just fine. Should I set up a post build event or something to make
I'm using a background worker to read a XML file and do stuff in a database i get nothing in debugger but when i run it i get this error... how can i find out where and what is wrong? Exception has been thrown by the target of an invocation.
im from iran.your site very fine. i have a question . in my country have vary device that send it information by phone line(example:fax,POS...) if me connect it to my computer modem and my computer modem connect to phone line.how can i read information recived and sended.
I'm doing a project in VB.NET 2005, in which I have to extract the tag information of mp3 files. For that purpose I have used code in this page. But the issue is when one of the tag is empty, it didn't return any values.[code]...
I have a teperature PCB that reports the temp back via serial port. I can open Hyper Terminal and receive all the data I want - so I know the unit is working... but I want to create a VB app so I can use the data received. When I run the program I get this error:
System.TimeoutException: The operation has timed out. at System.IO.Ports.SerialStream.Read(Byte[] array, Int32 offset, Int32 count, Int32 timeout) at System.IO.Ports.SerialStream.Read(Byte[] array, Int32 offset, Int32 count) at System.IO.Ports.SerialPort.InternalRead(Char[] buffer, Int32 offset, Int32 count, Int32 timeout, Boolean countMultiByteCharsAsOne)
I want to read some information from a .Sims3Pack file. Here's a link to the file format information. I only want to read the XML section. What is the easiest way to do this?
I have a project that reference from leadtools 16.5, and after that, i want to run my project..i see am error like it " An error occurred creating the form. See Exception.InnerException for details. The error is: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. im using vb 2008 pro
I am very new at this, but I am writing a program to log in and read information off of specific web pages. I have gotten serveral working already, but I'm having a problem with this one. Here is the code in question:
I need to read information from excel and them put them into a text file,I have the part for text file done and write to it but I dont know how to go and read from an excel file where every row is a diferent record, so I need to read the entire row and put every cell on variables so I can get my fixed text file done.
I configured session state in web.config.<sessionState cookieless="AutoDetect" timeout="5" sqlConnectionString="....."/>Now, I want to know timeout and sqlConnectionString from code-behind.
Im making a program that can make diffrent profiles. So it have to save: Username, Password, etc. then be able to read it.But I have no clue how to read diffrent lines, and stuff.I was thinking if ex. the pass was like this:<Pass>Pass here</Pass>I can read what was between those things, but I coulnt get it to work ...
I am trying to make a program that is able to read out information about my iPod. Now I ran into this little snag, it says "The method or operation is not implemented"
I've been scrambling my brain to figure out how to access my FTP server thing to get a list of text files in a folder and to edit the contents of those files online.
Im creating a game like CityVille where you create a city and such. The game allows you to name your city and such and because I dont understand how to use the settings thing to save stuff I want to use a text file. I want the textfile to look like this:
First off, what I'm doing here is trying to read in information from a magnetic stripe card, parse it, validate certain parts and go from there. I'm working on two classes... the first is CardClass and that represents the card itself (well, the data obtained from the card). The class is CardParsingClass. This holds all the card parsing rules.
At one point in the process, I will create an instance of the CardClass. That instance gets passed into the CardParsingClass.ValidateData function:
CODE:
This function steps through each of the card parsing rules and applies the rule to cardCurrent to see if it passes (i.e., is valid).
And here we come to the meat of it.... what I'd like to do is define an event called FailedCardReadEvent. Whenever I raise the FailedCardRead event I could write to the log that it failed, modify variables in the CardClass (particularly the state of the card read variable), etc. So, the way I'm looking to use this would be something like this:
CODE:
So as shown above I'm thinking I should code a FailedCardReadEvent in the CardClass. But I don't know how to do that.
I also don't see how this is different than just calling a subroutine. If I have to manually raise the FailedCardReadEvent isn't that the same as calling a subroutine?
I know I'm missing something but I'm just not getting it. I've spent some time googling this morning and read a few things but I'm just not understanding how it all works.
I am writing a program to login and read information off of specific web pages.I have gotten serveral working already, but I'm having a problem with this one.
