Reading And Modifying Data From Database?
Jan 25, 2012reading and modifying data from database
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Reading And Modifying MP3 Audio-file Metadata With VB 2010?
Oct 8, 2010Does VB 2010 offer native support for reading and modifying ID3 metadata in MP3 files? A brief search through MSDN shows me nothing, and I see someone says he had to write his own library of code for it. But that was some years ago, when you had to write code to access JPEG Exif metadata, and I know that's changed with the Image class and the GetPropertyItem method; so I'm hoping MP3 files have their own methods and properties now for this.
View 4 RepliesC# - Modifying Data With ListView EditItemTemplate By Settings Its Data Source Property
Feb 22, 2011Modifying data with the ListView's EditItemTemplate by programmatically settings its DataSource property and calling its DataBind method. I don't have option to use data source control for ListView. All ListViews are bound with data from code-behind. So, I have to handle the Edit/Update mode of ListView manually. [Code]
View 2 RepliesModifying Program Means Modifying One Aspects
Mar 16, 2011Locality Not repeating code..Modifying program means modifying one aspects.
View 11 RepliesReading Data From A Database?
Mar 16, 2012how can i display data from a sql database in a listbox?
View 2 RepliesArranging Data Reading In From A Database
Jan 9, 2009Private Sub frmAttendace51_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'clear data set of any existing data
objDataSet.Clear()
'fill schema
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Reading Data From A Database Query
Feb 4, 2009I made a query in MS Access using fields from multiple tables. I want to display stuff from it into a listbox on the form and then I need to save stuff back too it also. But I'm obviously doing something wrong cos I keep getting the error: "The Microsoft Jet database engine cannot find the input table or query 'Today'. Make sure it exists and that its name is spelled correctly." [code] Also, I have written further down objDataSet. Tables("Today's Absentees") and "Today's Absentees" is a query not a table, what needs to be written instead?
View 3 RepliesReading Data From A Remote Database
Jan 22, 2012How to read data, submit queries from vb application to a remote machine running sql server. note: I have created a complete functional version of a stock control system with the database residing in the local machine. I just need the basic concept of interacting with remote databases that's all. Do we have to use sockets to read/send data ?
View 2 RepliesReading Data From Checklistbox Into A Sql Database?
Nov 1, 20101) i want to make my login page (which talks to a sql table called logins) my first page and it authenticates to that database and doesnt let you in until correct credentials are entered. ? not sure how
2) I have a Checklistbox that is populated with names - ( i want to be able to populate a database called members with those names(Firstname & Surname Only) and from a New members form populate the same members details into the members database this time including address email tel etc etc ....
3) create a delete button that will delete the information from the database and from the checklistbox1 (this is in case the member leaves the club).
4) how do you create trial versions keys etc ...
5) change a progressbar timer to last an 1½ and show hours minutes seconds but once the button is hit to stop the timer it automatically resets to zero.
Modifying Database Permissions - This File Is In Use
Sep 9, 2010I'm trying to access a database (SQL Server 2008 express) using Visual Basic 2010 Express. First I got a permission error that was solved modifying the Database permissions. Now I get a new error message "This file is in use. Enter a new name .." I already have changed the Autoclose propertie to true, and also tried detaching the Database.
I'm using Windows Vista Home Premium, my string:
Data Source=.SQLEXPRESS;AttachDbFilename="C:Program FilesMicrosoft SQL ServerMSSQL10_50.MSSQL10MSSQLDATAemplo1.mdf";
Integrated Security=True;
Connect Timeout=30;
User Instance=True
Reading Data From A .mdb Access Database To A Form?
Oct 8, 2011I'm reading data from a .mdb access database to a form in my app. However the text is sometimes becoming scrambled as shown belowDatabase:Quote:The resistance of a 2.5mmonductor of length 8m and resistivity p = 1.72
View 6 RepliesModifying Data In Combobox?
Mar 1, 2012I am populating data form database in combobox. This data is in the form of numeric codes like 112, 113,
The thing i want to do is on selecting some code like 113 from combobox, it will display it as ABC113 in the combobox.if code like 114 selected from combobox, it will display it as ABC114 in the combobox.
I don't want to store this modified string in database.
Please help me to achieve this.
Provide me some sample code or link for simple combobox or combobox in datagrid.
i think there is no change in code in both above cases.
VS 2010 Modifying Balance In Access Database
Mar 24, 2011I'm building a money management type application for just overall practice with Visual Basic, and I'm having issues modifying a number.It's a checkbook ledger, which stores the information in the text boxes into an access database. When you first load the screen, it asks you for your account balance (still a work in progress) which puts that data into a label on the form. When you add a record to the database, that new amount will get added/subtracted to what you typed in for your account balance.The problem I'm running into is the save function will first check if a radio button is clicked or not and negate the amount depending if you click Credit or Debit. Then after that's done, it performs the Sum aggregate function on the Amount Column in my database which puts the number into a variable. That variable is then added to the account balance that you typed in.I'll supply two of the functions that this is regarding. The Balance() function runs when you first start the form, and the Save() function is where the math happens.The accountAmount variable is declared under Public Class so that way the save function can use the variable to do the math required.
View 4 RepliesHandle DBNull Exception While Reading Data From Database?
Mar 22, 2012I'm trying to handle DBNull exception while reading data from database. It's my code:
...
Dim SQLRDAs SqlDataReader
...
val1= GetStringFromDB(Trim(SQLRD("Name")))
val2= GetStringFromDB(Trim(SQLRD("Level")))
[Code]...
But still I get Conversion from type 'DBNull' to type 'String' is not valid. error.
Reading Data From MYSQL Database To Form - Table?
Oct 22, 2009I have login system and also I know how to get 1 exact row from mysql but how can I create a table which will be filled with values from mysql table?
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VS 2008 - Perform The Database Operation Such Reading Data?
Mar 13, 2010how to perform the database operation such reading data and using them for comparison within the VB programming..
Please guide me with explanation as i have very little knowledge regarding the database operation...
i am using VB.Net 2008 as frontend...and MS SQL Server 2008 (express edition ) as back end...
VS 2010 Reading And Getting Data From Excel Sheet To Slq Database?
Mar 29, 2012I have some trouble with opening a excel sheet and getting some data out of it.
I want my program to have a button, when pressed, gives a "select excel file" popup and then load the data from some cells into my sql database.
So, when opening a excel file the program should get the data from cell D3 to D8 and put that into the sql database.
I now have the following, but that will only open the excel file.
Public Class Form1
Dim oConn As ADODB.Connection
Private Sub ConnectDB()
[Code]....
Saving, Modifying & Deleting Data In DGV?
Sep 3, 2009I have a dataset bound to a DGV thus:
Me.BudgetTypesTableAdapter.Fill(Me.RestelDataSet.BudgetTypes)
When I save new data I use :
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Me.Validate()
[Code].....
should work as the Rowstate is checked to see what should happen ie (UPDATE, MODIFY OR DELETE).
Modifying Names And Data Via The App.config File?
Mar 23, 20111. The application's text box controls are entered manually in my.settings (e.g., tb1, tb2, tb3)
2. The application user "adds" a row of text boxes, which are iteratively assigned a name to match the above my.settings names
3. Upon "save" by user, the text in each text box is associated with its control (e.g., If cntl.Name = "tb1" then My.Settings.tb1 = cntl.Text)
4. The User needs to delete one or more rows previously added
Question:Under #4 of above, what is the best way to delete the rows and how can I use the app.config file to update the above data so I can reuse the named text boxes and keep everything sequential?
Modifying Text Data Based On Start Of Lines?
Apr 19, 2012I am new to programming, so I am looking for somewhere to start with this project.What My project needs to do, is that the user inserts data consisting of multiple lines (up to thousands of lines) Into a text box of any type.When a button is clicked on it goes through the lines and alters lines based on what it starts with.
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Clicking the button would cause every line with DDE at the beginning to be deleted, while leaving everything else intact.I'm not just looking for handouts, I do want to learn. I just to know what to look at to do this.
Use Dataset For Sql Server For Adding/modifying/deleting Data?
May 11, 2009I want to use dataset for sql server for adding/modifying/deleting data from sql server.
View 8 RepliesVS 2008 Directly Modifying Data On SQL Server From VB Code?
Dec 12, 2009I'm trying to update some data fields in an existing data table, and want to access the data directly. I know it's possible, and I used to do it years ago in VBA, where you could do things like
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Adding Columns And Modifying Columns In Access Database Using NET/SQL?
Oct 15, 2009I am using the following code to alter an table imported from an Excel spreadsheet
Dim SQL As String = "ALTER TABLE receipts ADD payee integer, account integer, category integer, reconciled boolean"
Dim dataread As New OleDb.OleDbCommand()
dataread.Connection = Connection1
[code]....
Both ExecuteNonQuery() actions yields the exception message {"Syntax error in field definition."}The error message does not happen with the first if the boolean column is not there (I tried Tes/No as a definition - but that also failed.The second query to modify the ID column from autonumber to integer I assume fails because it is a Primary KeyHas?
Continously Reading Data From A Modbus TCP Device And Store Data In A Textfile?
Mar 2, 2012I have a modbus TCP device that I have managed to connected to through my VB source code.
I want to poll (continueously read) data from certain registers of the device, and store the polled data in a file (text,csv, excel).
Data Binding - Update The Grid Data By Reading The Array
Apr 2, 2012Data binding should be an extremely simple thing to manage but I can't find a SIMPLE solution to the following problem.
I have two forms
Form1 contains a 4x4 MSFlexGrid (unfortunately an unmanaged COM object but I can merge cells, which I can't do with a managed Datagrid)
Form2 contains other controls which change the data in the Flexgrid.
I connect the two with a Public 4x4 array. Form2 changes the data in this array. I can update the grid data by reading the array. But how do I bind the Grid to the array so that it auto-updates - which is the whole point of binding isn't it?
Reading Data From A Socket (as Bytes) And Storing Data In A String?
Nov 29, 2009I am reading data from a socket (as bytes) and storing this data in a string. Then later i need to access specific bytes within the string and do some math with them. However the bytes that I read back from the string are not what I am expecting.
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Insert, Delete, Update The Data Into Database And The Data From Database Will Be Display Using Datagrid?
Sep 17, 2010I got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Try
btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
VS 2010 Remove Previous Data Of Database Then Insert New Data To Database From Textfile
Dec 14, 2011What I want to happen is that the button from my system will remove the previous data from database and then insert new data to database from text file. Im done with inserting new data. The thing is that I dont how to control or where to put the Delete Command from my code.
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Reading And Writing To/from A Database?
Jun 16, 2010I have a table in a database with 3 columns: OfferName, ExperienceAward, and GoldAward
I populate a combobox with the various offer names with the code below:
Dim con As OleDbConnection = New OleDbConnection( _
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersDouglasDocumentsVisual Studio 2008ProjectsGameBoxRPGGameBoxRPGContacts.accdb;Persist Security Info=False")
Dim cmd As OleDbCommand = New _
[Code]....
Reading From A Database File?
Oct 2, 2009I have been trying to create a login page for a while and most of that time I have been searching for info on how to make it read the username, password and any other information off of a database.
I recently gave up and decided to use some code which reads it from a .txt file and this works and therefore I could complete the rest of the page and test it using the .txt file. However, a .txt file is not an ideal place to store the information as it is difficult to look at the text and find what you need to change if you want to upgrade the system to hold more data than before so therefore I came to this site to seek help on making the login page work with a database.