How To Access File Randomly From Database
Oct 7, 2011The topic of my project is : Electronic Examination
How to access files randomly from the database in Visual Basic.
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Developed Database Project On Vb6 Using Adodc And Datagrid Using Ms Access Database File?
Mar 2, 2010Friends I have Developed my Data base Project on vb6, using adodc and datagrid using ms access database file, it was working nice in vb6, I also put Search box there and used adodc1.recordsource="select * from table" sql query.
later i needed to convert it in vb.net I converted it, every thing is working fine, but one problem appears, an adodc's Recordsource query for searching records is not working, it only works if there is data in dataset (Datagrid),suppose once i pressed search button to search record and if no record found then dataset / datagrid becomes empty, now i wanted to search an other record with other name, but this time it does not work and following error appears Either BOF or EOF is True, or the current record has been deleted. Requested operation requires a current record.
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C# - Retrieve Data Rows In M Table In Database Randomly?
Sep 26, 2010i would just like to ask how do i retrieve data rows in my table in my database randomly... i was able to create an online quiz wherein it displays the question,choices in consecutive order but what i want is, every time when user will start a quiz it will show questions in random order. I am using mssql 2005 as my database below is my code.. a
QuizPage.aspx
<asp:DetailsView ID="questionDetails" runat="server" AutoGenerateRows="False"
CellPadding="4" ForeColor="#333333"
GridLines="None" Height="50px" Width="550px">
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Randomly Select The Questions W/ Answer In Database(mysql)?
Aug 28, 2011I'm started my project and here is my code.
con.Close()
con.Open()
com.CommandText = "SELECT * from math.questions where number ORDER by rand() limit 1"
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File.Exist Occurs Randomly?
Jun 21, 2012Right now I have a program that checks login credentials against my Access(2003) database.It works, but the problem I'm having is that it's checking if the file.exist to frequently and with no real pattern. How I'm doing it isI have a My.Setting that saves the file path string as well as the connection string, during form_load I check if the My.Setting path string exist, if not then use an openfiledialog to find the file. Right now I have the database in a public drive, which is why I think that my program thinks that the file doesn't exist sometimes. This is how I'm doing all of the above:
'Some global variables commented out
'Dim log As String = My.Settings.loginStr
'Dim logCon As String = My.Settings.loginCon
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Read Lines From A Text File Randomly?
Jan 11, 2011i wanna read lines from a text file randomly until all the lines are read & wanna set a time interval in each two words apart. think a piece of code to do that in vb.net?
View 2 RepliesVb 2008 - Choosing Name From Text File Randomly
Jun 17, 2011I am new in visual basic and I came up with a problem. I have text file with names in it and I want in a textbox everytime the user hits a button randomly choose a name from it.
View 1 RepliesFile.Copy FileNotFoundException Reported Randomly When It's Never True
Nov 19, 2009The code is very simple.
If File.Exists(strFileMovingTo) Then File.Delete(strFileMovingTo)
If File.Exists(strFileMovingTo) Then
Call SendEmail(Globals.EmailInternetTeam, "dev-sql@fad.co.uk", "Display Jpg
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However a FileNotFoundException exception is thrown during File.Copy even though its wrapped in a If File.Exists ... End If to check its existance.
The great thing is if you run this through the debugger it nearly always works, when released as an app it almost never works.
No Access To An Mdb Database File After Copying The File?
May 21, 2009I have the following code where I make an copy of my database that I use. the code executes 100% but the problem I have is I'm not able to access my database afterward.I get a "Cannot start your application. The workgroup information file is missing or opened exclusively by another user." and so if I restart the application it all works fine again.I'm certain the reason is because I can only access that database using a specific account name and password which is not account I'm logged in with.What i want to try is to default that database mdb to the point where no user is accessing it, or to reassign the the only account name that can access it to that database mdb. I've tried playing around with file security but had no luck.
Private Sub cmdBackup_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdBackup.Click
BackupDialogDB.DefaultExt = ".mdb"
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Ftpwebresponse.getresponse Randomly Stops Reading Data Before End Of File?
Jun 25, 2009I'm trying to download a file using ftp and then using a streamreader to read it and write it to a text file. The problem is, when I download the file and read it, either it did not get all the data or it stops writing the data to the local file and doesnt produce any error, it just sits there. I've tried it with many different files from the ftp site and this always happens.
Private Sub Download(ByVal stateURI As String, ByVal userName As String, ByVal pWord As String)
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Compiled File With Access Database
Sep 4, 2009I recently made a small exe program that connects to an Access database.Now it runs fine on most computers, but the one it HAS to run good on has some pretty harsh restrictions set on it's network.The problem is an OLEdb connection is refused because the file is not trusted on the Network, and I don't know how to give it the access it needs.I've tried running an install with it, and that will give it access, but only on the local computer and not on the network drives.I've tried placing the database in the network drive and accessing it with the install there, but there is a problem in that the local drives are wiped at logout.I've tried giving it trust access through Administrator Tools, but it always throws an error when I try it.
View 1 RepliesCreate Log File From Database Access?
Jan 14, 2010i not sure can it be done.
Using VB.net by typing the name and hit the button to Show the person record from the database access.
the log file will pop out and show the person record in VB.Net
How To Update Access Database From Txt File
Dec 15, 2011the same txt file will be updated from time to time and it will be imported agian to the database.what is the code that will add the new data ?
Private Sub sendtoaccess_Click(sender As System.Object, e As System.EventArgs) Handles sendtoaccess.Click
Using Conn As New OleDb.OleDbConnection _
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Importing XML File Into Access Database?
Dec 31, 2009I use the following code to import a XML file into an Access database:
dbname = "c:PC Auditer.accdb"
xmlFile = strFileName
Dim ds As New DataSet
Dim streamRead As New System.IO.FileStream(strFileName, System.IO.FileMode.Open)
ds.ReadXml(streamRead)
streamRead.Close()
[Code] .....
The import works fine, but when a next XML file is imported with less records, the database don't get updated and the 'old' records remain in the database.
Make An .exe File With Ms Access Database?
Apr 28, 2010I know how to make an .exe file with vb 2008..but my project have a database (ms access 2003) and when i tried to convert it to an .exe file, the database is not attached.
View 2 RepliesReading Csv File Into Access Database?
Feb 15, 2010I want to read a csv file into an access database , here is my code :
Private Sub load_csv()
Dim ConnectionString As String
ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" & _
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The strange thing is that the file really is there, so what else could go wrong ?
Save Pdf File In Database(ms Access) Using .net?
Jun 11, 2011how to insert a pdf file in database(ms access) using vb.net
View 4 RepliesSet/get Data From Database Access File?
Aug 4, 2009I'm using Microsoft.Jet.OLEDB.4.0 to set/get data from database access file, but it isn't working perfectly on 64-bit systems, so I'm looking for an alternative way.set/get data from database access file working on 64-bit systems.
View 1 RepliesSound File To Database Access?
Jun 11, 2011I'm having a hard time looking for a tutorial over the net on how to store sound files to access database. I'm planning to make a playlist on my application where in the user will just select the filename on a listbox and will click the play button. is this possible? it is okay if you can give me links on how to do this?.
View 5 RepliesUpdate Access Database CSV File
Jan 11, 2012I'm trying to update a database with data from a CSV file. I have got this far but I am not sure where to go from here:[code]
View 2 RepliesVB 2008 - Can't Access MDB Database File?
Oct 27, 2010My problem does not seem to be the same as in other links. I'm trying to teach myself VB 2008 and I want to connect to an Access MDB file. I follow the instructions in all the different books and websites. I start a new project, choose a new data connection, change the type to Microsoft Access and browse for the file. When I get the connection string I press "Test Connection" and it's okay. I then drag either the entire table or just a field to the form. I use Data Preview Data and can see all the rows and columns and the data, so I know the connection has been made. however, when I press F5 I get a form, but no data and it says "0 records of 0".
I accessed the code and put a MsgBox before and after the "Fill" statement. The one before pops up, but the second one (below Fill) does not. I also get "A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll" in the Immediate Window. I have tried putting a "Try" statement around the code and in this case it will go to the second MsgBox, but still no data.
I'm following what seems to be the most basic and simple method, but I cannot get data in my form.
Where To Store Access Database File
Jun 4, 2012I am building an application with an Access database, using Visual Basic 2010 and am not sure where the best place to store that database is. I am looking forward to creating an install file and want to make sure that the database is in the right place.
View 1 RepliesCan Save Data To Access Database And In Access Database Field Set It To Date / Time
Jun 4, 2011I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
View 2 RepliesAccessing A Data File From Access Database?
Apr 9, 2010I have a problem with accessing a data file from Access database. Data Source configuration Wizard comes back with a dialoge box saying "Error Message: Could not load type 'Microsoft Visual Studio.DataDesign.SynDesigner.SyncFacade.SyncManger' from assembly
'MicrosoftVisualStudio.DataDesign.SynDesigner.DslPackage,version = 9.0.0.0, Culture = netural,PublicKeyToken=b03f5f7f11d50a3a
My computer is a Vista and it have known to have lots of problem, but not sure if this is one of it.
Command To Open Ms Access Database File
Mar 3, 2011i use this command to open my ms access database file, but it is not working, what is the problem.... i learn this command from internet tutorials. [code]
View 3 RepliesImporting A Text File Into Access Database?
Nov 12, 2010I am using the following code to try and import a txt file into an Access database however it is not working, at all. The txt file has approximately 10 columns in it but when this has finished I get 1 column with no Data.
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Linking Access Database File Into VB Form
Oct 22, 2011I have already linked the file into the form, but can't figure out the code to write for buttons to beable to view the first record in the database in the file that i linked. I need to make buttons to find the first record, last record, previous and next record. Then I also need to code buttons to add, change, and delete records.
View 4 RepliesMaking An Exe File Of .net Project With Ms Access Database?
May 15, 2011I have made a project(made a new data set and forms made by dragging data set entries to form ) in vb.net in which i used ms access as database and now i created a setup file for it but when i run is its giving error regarding some connection to database.?
View 3 RepliesMS Access Database File On Local Network
Jun 22, 2010I am working on a project based on networking. My problem is that database on server (time to time updated by clients Application) is available in shared folder sometime any client delete that database file from shared folder then project stopped working. So give me process for accomplish this problem is there any way through which is database on server work invisibly and client unable to delete that file. I tried read only attribute on shared folder then my project unable to insert record in that database file.
View 1 RepliesUpdate Changes From .net Program To An Access Database File?
Dec 14, 20091. Private Sub BooksBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BooksBindingNavigatorSaveItem.Click
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