VS 2008 Error When Changing Data In SQL Database
Jan 22, 2010I am having a problem when changing data (or altering data in a feild)I have the error message for a better explaination of the problem
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Error When Changing Path Connect To Database As Relative
Jan 12, 2010I created a project in vb.net which is connected with database. The problem appeared when i changed the path which connect with the database, i made it relative. So some of the forms which contain the connection are working properly but in one form i got this error: [Code]
View 10 RepliesXML Database Changing Schema And Migrating Existing Data?
Aug 5, 2010I have a purely XML database. It's stored as XML, there is no other database file. I did this by first creating a dataset in VB, then adding tables and relationships. I load the database by calling DataSet.ReadXml(FilePath), and save the database by calling DataSet.WriteXml(FilePath).
Now I need to make schema changes, but need to preserve existing data. How might I go about doing this? As soon as I load the database I loose all data if I change the schema in the dataset designer.
I have searched for changing database schema, but everything I find deals with real databases, not XML only ones, and the info doesn't apply because they are using db connections and then running sql against it and AFAIK XML databases have no way to "connect".
VS 2008 - Updating Database File After Changing Value In DGV Control
Jul 23, 2011I have been trying desperately to update a data base file (Microsoft Access file) through a DataGridView control. The form is very simple, containing only a button and the DataGridView control. Whenever I change anything on the DataGridView control and press the Update button, I get an error saying ""No value given for one or more parameters". Below there's a picture showing both my form and the whole code , along with the error message. In case it is not possible to update a data base file through a DataGridView control.
View 3 RepliesData Management - Changing Current Database System, MS Access 2007 Front End And MS SQL Server 2005 Backend
May 8, 2012We are thinking about changing our current database system, MS Access 2007 front end and MS SQL Server 2005 backend to using a higher level language such as Visual Basic .Net. I wonder if this is the BEST solution for data management? Currently, among others, we have two big database programs that handle more than two hundred users and it's crashed often. That's the reason we think about changing to something that can handle these database programs effectively preferably using MS technology such as .Net.
View 12 RepliesVS 2008 Setting A Primary Key And Changing The Names Of Some Fields On Database File?
Aug 5, 2011Lets say we have an Access file in a well known path (i.e. "C:MyFolderMyFile.mdb"). That file does not have a primary key set on the table we are interested in . Is it possible to set one of the fields as a primary key (for example the "ID" field , which is also an AutoNumber data) ? And one more thing : I'd like to change the name of a field on that table . For example , lets say there is a field called "My Field 1" (note the space characters) and we want it to be renamed as "My_Field_1" . If it's possible , I'd like both these changes to be permanent in the data base file itself , not just in the imported DataSet ,
View 7 RepliesVS 2008 Changing Bound Data When Entering Text In ComboBox?
Aug 9, 2009I have a data-bound combobox that pulls values from a BindingList(of T). Combobox loads fine, correct values are displayed (I'm not using SelectedItem or SelectedValue). I'm using properties and connecting the data to the control via a bindingsource.
What I want is if the user types text into the combobox, I want the data from the bound table to change to that new text, i.e. edit the bound data directly.
Easy as pie to do with a textbox, but can't seem to get a combobox to work this way.
I was trying to use the validated event of the combobox to write the data to the datasource, but it doesn't fire when I press enter. Is that the way to do it? Can I not link the data to the combobox directly?
"General Access Denied Error" After Changing Password On Windows 2008 Server?
Nov 22, 2011The error is raised after a normal user changed his password on - Windows Server 2008 Standard server joined to a workgroup
View 4 RepliesError When Insertion Of Data Into Database
Aug 3, 2010Actually in our project we create different database using vb form code..so this database is a chance of transferring to other users to use others database. so when we create the database it will insert the database name into the main database. Problem: One user who is accessing MS 2010 ACCESS has created a database and transferred into other PC where MS 2003 access available..when he is going to insert database name into main database which is transferred it is not inserting into main database exception is occured..
[Code]...
Error While Inserting Data In The Sql Server Database
Oct 9, 2011I'm using the following code to insert the data in a table and i am getting the error at cmd.executenonquery()....The exception is labelled as SQL exception and the underlying message says "String or binary data would be truncated. The statement has been terminated." [code]
View 2 RepliesGetting An Error When Try To Insert Data Into The Database In VS-2010?
Feb 24, 2011Try
Dim SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
SQLconnect.ConnectionString = "Data Source=" & Application.StartupPath & "Databasedb" & ";"
SQLconnect.Open() ' VS highlights this line
[code]....
Is it because of the database extension ? I used sqlite Admin to create tables
Edit : I just tried it out in VS 2008, it works flawlessly. Why is it not working in VS 2010. Does it something have to do with app.config file ? or .net framework 4 ?This is what I added in the app.config file
<?xml version="1.0"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
[code]....
Inserting Error - Insert Data Into Database?
Apr 4, 2010I am trying to insert data into my database but because i have relationships in the database, i can't enter data into one unless the other has been entered but i can't also do all that at the same time.This is the error i get: You cannot change values of this column because it is related to another table, what do i do and what is the next best option if i don't want to use "autonumber" but want to make sure i don't repeat numbers. How do i implement that?
View 1 RepliesWhen Inserting Data Into A Database Get A Conversion Error
Sep 2, 2010I'm working on a form that allows to add new users to a users table in my Access database. The table only has 3 fields: user (string), password (string) and admin (boolean). user is the primary key. But when I run it and try to add, I get an error when casting the query to Double (?). I don't have any double variables or table fields, and I'm not trying to cast anything from or to double. So I have no clue about how to fix this. The code I'm using to insert (and it's working correctly on other forms and tables I have) is:
[Code]...
How To Catch Error If The Data That User Select Not In Database
Oct 23, 2010How can I catch error if the data that user select not in database?
This is my code.[code...]
Saving Data From A Data Grid To An Access Database (2008 Express)?
May 18, 2010I'm trying to create a simple Data Grid that will automatically save changes. So far I have a data grid connected to a MS Access 2007 Database that reads the data. I can create new fields in the Data Grid, but I need to program to save the data automatically to the database on update (or on close).
View 6 RepliesError When Coding To Add In Data To The Ms Access 2003 Database In Vb2005
Jul 16, 2009i have encountered this error Variable 'dsNewRow' is used before it has been assigned a value. A null reference exception could result at runtime when i click on the button to insert data into my ms access database.
[Code]...
Database Binding And Data Navigation Project Error - Null Reference?
Mar 4, 2012I am trying not to become intimidated or give up.I created a simple database and added stored procedures to read the data on a Windows form using Visual Basic in VS 2010.First I tried the Data Grid Example and all worked, I was able to view the data using a connection string to call the Stored procedure.I have stepped it up a notch by trying to bind data to form controls and I am getting this error message when I try to navigate through the data.
System.NullReferenceException was unhandled
[code].....
Error In Connecting In SQL 2008 As Database Of VB 2008
Feb 19, 2009Im using VB 2008 and SQL Server 2008 as its database. But i have encountered this error in connecting to my database. An Expected error has occurred. Error Message: Count not load type [Code] What's seems to be the problem? or what this error message means.
View 10 RepliesDatabase Deleting Rows - Error - Value Of Type String Cannot Be Converted To 'System.Data.OleDb.OleDbConnection'
Sep 15, 2010I have been trying my hand at this for some days now and just cant get anything to work. Below is the code im currently using to delete a row from a database table, the problem when trying to build the project line 5 is giving this error about the value con" Value of type String cannot be converted to 'System.Data.OleDb.OleDbConnection' "
Dim con As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=Customers.mdb"
Dim cnn As New OleDb.OleDbConnection(con)
cnn.Open()
[CODE]...
I have also tried using this code below, but to no success. Im basically just looking for something rock soild that i can use to accomplish this task. Been stuck on this for quite a while now.
CustDetailsTableAdapter1.Connection.Open()
Me.CustDetailsTableAdapter1.Delete(txtDelCustN.Text, txtDelCustSname.Text, txtDelCustTel.Text, txtDelCustAddr.Text)
CustDetailsTableAdapter1.Connection.Close()
VS 2008 Having Error At Updating Database
Apr 8, 2011i m having problem while updating my database... In this code when i delete records then it will deleted but it can't show updated data..for viewing new updated data i hav to again open the form ... so is there any code which i miss??? to update database @ runtime??
[Code]...
VS 2008 - Error With Making Update To Database
Apr 2, 2009This is in a BindingNavigator. I'm trying to get it to save to the database when i click the Save button. This is what I have so far:
vb Private Sub SaveToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripButton1.Click
[CODE]..............
It's telling me "Object reference not set to an instance of an object." on the dsNewRow declaration, I have no idea what that means. That same code (aside from different names) works fine another another project.
VS 2008 Updating Access Database Error
Jul 26, 2011I have a small program with Members table and for subscription. The table has a joindate, expirationdate, status and gracedate collumns. When I run my program n click on a button I want the program to update the STATUS text by checking expirationdate column if is greate or equals to todays date then Set it to Expire.[code]Here is the error message I get on runtime: Syntax error in string in query expression 'Expirationdate <= '26 July 2011'.All I need is to change the status text into Expire if expirationdate <= todays date.
View 1 RepliesError After Changing Framework Version
Nov 16, 2010All my application does is downloading files and doing string manipulation. I don't think I need .NET 4.0 for that. I changed the framework to 2.0, so more people can use my application without having to install a newer version.[code]...
View 3 RepliesError Changing Summary Information
Mar 12, 2008Calling the next sub I get an error message which is not clear to me. Can anyone give me a solution.
A example vbscript from Microsoft (WISumInf.vbs) uses the same structure and is functioning as expected.
[Code]...
Fix Resx Error After Changing File Name?
Jun 7, 2011I had a program going along swimmingly until I tried to change the name for form1 to something more meaningful. Now It is all messed up and I am getting the dreaded resx error. Is there any hope in salvaging this?
View 2 RepliesVS 2008 Database Adding A Record Parameters Error
Jan 3, 2012Module Code
Imports System.Data.OleDb
Module modConnections
Public myConn As New OleDbConnection
Public myCmd As New OleDbCommand
Public MyDr As OleDbDataReader
[Code]...
VS 2008 Database Adding A Record Parameters Error?
Apr 13, 2010Module Code
Imports System.Data.OleDb
Module modConnections
Public myConn As New OleDbConnection
Public myCmd As New OleDbCommand
Public MyDr As OleDbDataReader
[code]....
VS 2008 Error Connecting Remote MySQL Database
Nov 2, 2009i have a website www.aybydinnovations.com.I setup a new mySQL Database into my webserver.I am developing vb.et application that will connect into that database from my webserver.
Here is my codes:
Imports System
Imports System.Windows.Forms
Imports System.Net.WebRequestMethods
Imports MySql.Data.MySqlClient
[Code]...
VS 2008 Error In Deleting Data?
Jul 8, 2009I have a basic Table and I can add and save data, but when I try to delete, I het this error:Quote:Update requires a valid DeleteCommand when passed DataRow collection with deleted rows.
Public Class Form6
Private Sub ConverterBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ConverterBindingNavigatorSaveItem.Click
[code]......
VS 2008 POST Data Error?
Jul 28, 2009Here's my code
theRequest.Method = "POST"
theRequest.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10 (.NET CLR 3.5.30729)"
[code].....
