I am trying to save data to database but I got a exception here is the code
Try 'connection is set
sqlcon = New SqlConnection("Data Source=MENUKA-PC\SQLEXPRESS;Initial Catalog=studentInformation; Integrated Security=True")
sqlcon.Open()
[code].....
I'm running into a slight problem with an SQL INSERT INTO statement. I've tried setting this up first as a command statement and now as a stored procedure. When the process runs it's not signaling any errors and it appears that it's working properly. However when I check the database nothing new has been added. I have the statement within a try catch and it's not catching any errors. I've gone so far as to delete the table and recreate it, still nothing. I should also point out that this entire statement was essentially a copy & paste from another program that's working perfectly.
vb.net code below
Code:
Try
Dim cmd As New SqlCommand
cmd.Connection = con
[code]....
I have created a access database and have sucsessfully connected to it.I have three records in it (just for testing) and have got the BindingNavigator to connect to it as well.I can move through the (3) records that I have previously entered, and when I click on the Add Record button it zero's the text fields that I have displayed.When I enter NEW DATA it does not SAVE it.
View 7 Replieswhen I input data are not yet available. button does not work but when I enter existing data in the database, the button work for find existing records in the database and msgbox.appear this my coding. (i am using Microsoft Visual Basic 2008 express edition database mysql)
Imports MySql.Data.MySqlClient
Public Class Form2
Public conn As MySqlConnection[code].....
rewriting a class I use for saving Treeview data to a XML file for use of saving ListView data I can't really figure out the rewrite, I'm stucked, unfortunately Listviews seems to be a big problem for me in general.
Option Strict On
''' <summary>
''' The TreeViewDataAccess class allows the nodes within a TreeView to be
''' persisted to xml for later retrevial.
''' </summary>
[Code]....
I have a DataTable "dt1" that has thousands of rows.
Columns are:
- Type_And_Model
- Val_1
- Val_2
- Val_3
- Val_4
There are only about 30 different "Type_And_Model"-types.How can I insert into a new DataTable (dt2) only distinct "Type_And_ Model" types with the sum of their specific values and total appearance number?
dt1 - DataTable with thousands of rows
Type1 2 2 5 5
Type1 4 2 7 5
Type2 2 2 5 8
Type1 2 2 9 5
Type3 3 2 5 5
Type1 6 2 5 7
Type3 2 7 5 9
Type1 8 2 9 5
.....
INTO =>
dt2 -DataTable with disinct types and their sum values + appearance numbers.
Type1 22 10 35 27 5
Type2 2 2 5 8 1
Type3 5 9 10 14 2
Visual Studio 2008VB.NETFramework 3.5Windows Application
I have a SQL database names TestSQLVB
In it a table called tblTest2, with a three fieldstest2id , int, pk, increment by 1field1, varchar(50)field2, varchar(50)
I have a dataset named Dataset2.xsd
A tableadapter named tblTest2TableAdapter
A insert query names InsertTest2 with fields @f1, @f2 and ExecuteMode = Scalar
When I run the following code per MSDN [URL] the database does not get updated.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim testds As New DataSet2TableAdapters.tbltest2TableAdaptertestds.InsertTest2("One", "Dog")
End Sub
Currently I am saving data from my applications by saving a text file via a stream reader as a string. I have come to a problem. In my current application, I have an array of the following structure:
[Code]...
i have a windows forms app which displays a bunch of records from my sql database. when i modify records in the grid and click on save, all changes are saved EXCEPT the changes made to the currently highlighted row. they aren't written out the database until i exit the actual program, despite clicking on my save button.so for example, if i change 5 different records in the grid, and click on save, and then click on refresh to reload the data from the database, 4 out of the 5 are saved correctly, but the row that is currently highlighted (meaning, the last row i changed) still has the old data.My code for the save button look like:
Code:
Private Sub TerritoryBindingNavigatorSaveItem_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TerritoryBindingNavigatorSaveItem.Click
[code]....
When running the code the data does not save within the data base there are a few errors with in the code ......
View 2 RepliesI made a CSV editor in VB08 and I cant save it. It looks like my save coding is correct but I don't know why the edits I do to the .csv files after I opened them wont actually save them although it does say I saved it.
[Code]...
I am currently working on saving some info and images. And i was looking at a game maker i used to use and it saved images as a "1rc" format. Is this custom? And can i save and load images as a "1rc" format?
View 2 RepliesI have 3 tables. Customer,item, and price, where price holds the customerid,itemid, and the price. This lets me set a different price for each item based on who is buying it. I am trying to add data to the price table from a form which gets a customerid and itemid, and the price they will be charged. The only table to be updated is the price table.
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveaspButton.Click
' cust and item are pulled in when the user inputs a name, the lookuptable is used to put into an unseen label
[Code]....
This does add a table in the table visual studios uses but wont save it to the main database. This means I can do a fill method and see the row while the program is running, but wont be there next time I run the program.
i've written a simple program to insert a string into a sql database. For some reason, when I check the database, there is nothing in it.
Imports System.Data.SqlClient
Imports System.Threading
Public Class Form1
[code].....
the codes run with no errors, but the data is not save in the sql server table event though the codes run.Dim connection As New SqlClient.SqlConnection
connection.ConnectionString = ("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\DB.mdf;Integrated Security=True;User Instance=True")
connection.Open()
Dim command As New SqlClient.SqlCommand
command.CommandText = "INSERT INTO [studentsummary] (sum1,sum2) VALUES (@sum1,@sum2)"
command.Connection = connection
[Code]...
I am creating a feature in my application that will allow a logged in user to add additional users to be logged in. The usernames and passwords are kept in a single database created in Access 2007. The table has 3 columns: ID, UserName, and Password. I am trying to insert user-inputted data through a TableAdapter function in a DataSet. It has worked once but for some reason it stopped working, and I can't figure out why.
Calling the TableAdapter function...
Me.UsersTableAdapter1.AddUser(Me.txtID.Text, Me.txtUsername.Text, Me.txtPassword.Text)
[Code].....
Visual Studio isn't throwing any errors my way or anything so I am not sure what's going on here. The fact that the code worked once but isn't working now is also confusing, and I don't recall making any changes related to this feature since it worked that one time.
i have my insert command but when ever i run it and click the button i get the messge "ExecuteNonQuery: Connection property has not been initialized." Here is my code:
Private Sub btnRent_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRent.Click
Dim constr1 As String = "Provider=Microsoft.ACE.OLEDB.12.0;" & "Data source = test.accdb"
[code]......
I am trying to save a new object to the database using petapoco.I have an object that uses a Guid for the primary key.Here is an example of the objects primary key property.
<PetaPoco.Column()> _
Public ReadOnly Property Primkey() As Guid Implements IStandardDocument.Primkey
Get
[code]....
Here is an example of the save method.
database.Save("Reservations", "Primkey", reservation)
The sql that is generated is an update with a primkey of 00000000-0000-0000-0000-000000000000 instead of an insert. So new records are never inserted.If I have an existing object with a valid guid the update and delete all work correctly.
I have a database in sql server 2005 named as Addressbook and table Persons with PersonID as PK.I have created 4 textbox on form for FirstName, LastName, Address, CityID and an ADD button. When I input data to text boxes and press F5 then it show some error message. I hv tried eerything but failed.My code is as following and error messae is (The SqlParameterCollection only accepts non-null SqlParameter type objects, not Boolean objects.)[code]
View 1 Replies[code]its show me that it have written the command but when i stop the program and see my db its is not there. i've searched the net and alot of books but i cant seem to make it work.
View 1 RepliesI am trying to run what I thought was a rather simple parameterized insert query, but am running into all sorts of problems. SQL EXPRESS 08R2, VB.net
Here is the VB code that builds the parameters...
UPDATED Variable names:
itemDataSource1.ConnectionString = ConfigurationManager.ConnectionStrings("MyConnectionString").ToString()
itemDataSource1.InsertCommandType = SqlDataSourceCommandType.StoredProcedure
itemDataSource1.InsertParameters.Add("@short_Text", short_Text)
[Code]....
I am trying to insert data into my database but no database is being added. The file is being opened as the date modified changes each time I try to add data. Below is my
Try
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=W:Textvertisingdatabase.accdb;")
cn.Open()
[Code] .....
Database table is called SMS. No data is being inserted to the database.
I need to control a device with a GPIB port. I have the commands that I need to use to do this; but I don't know which is the sintaxis in Visual Basic.
For example if I need to send a instruction like "START:0.01" to the external device which are the libraries that I have to include?, how should I write the programming line to do this?
The main tasks that I need to program are sending data, receiving data, and saving data
im in the middle of doing sql queries i can search my data base usingGetDateFrom (Select, from, where) Me.nameTableAdapter.FillBy(namenDataSet.descip, Me.box1TextBox.Text,Me.box1TextBox.Text, Me.box2TextBox.Text, Me.box2TextBox.Text)i have this working fine im struggling with inderting data to my databse i have made the query ..
INSERT INTO `details` (`Forename`, `Surname`, `Username`, `Password`)
VALUES (''& ForenameTextBox.Text &'', ''& SunameTextBox.Text &'', ''& UsernameTextBox &'', ''& PasswordTextBox &'')
[code]....
I have run into a problem. When I insert some data into a table with the Insert Function, I want it to return to me Id key.Say a table is like this
ProductId
Product
Quantaty
If I run
Code
Insert Into [table](Product, Quantaty)Values(Cd, 3)
I want it to return to me the value of the ProductId so that I can use it, is this possible?
I am trying to do simple insert, update, delete, select statements within VB .NET to access a MS Access database. I have tried all kinds of solutions offered on the web and while the code seems to work, no rows are inserted. Also, I have tried, unsuccessfully, to use the Try/Catch to see if there's an error with no success. I have attached the versions of VB .Net and MS Access I am using: Here's the code:
[Code]...
I have to insert/update shipper information and I wrote a stored procedure like this:
IF EXISTS (SELECT * FROM sysobjects WHERE name='usp_Nucleus_LSS_AddShipperInfo' AND type='P')
DROP PROCEDURE usp_Nucleus_LSS_AddShipperInfo
GO
CREATE PROCEDURE dbo.usp_Nucleus_LSS_AddShipperInfo
[code]....
I am using VB.Net 2.0 and SQL Server Enterprise edition.
I am developing vb.net windows application. I am trying to insert data with insert command.I am getting the insert data as long as the application is running. But when i close the application and reopen again the inserted data was not in the access database and i am getting no result. what is the problem, is it in code? i am using like
strsql=" Insert into table(col1,col2) values(val1,val2)"
selectCommand as new oledb.command(strsql,strConn)
selectCommand.ExecuteNonQuery()
Not inserting in the database but showing in application. how?
What I am trying tot achieve is the following:User inputs data in one form that saves to the dataset table no problems. On an edit screen I want the current data saved to appear in this page within all the relevant fields but when saving I want this data to add to the dataset table as an additional line of data so the transaction records are kept.I want to add a new datarow regardless of it saving one change or all 7 changes that are possble.
e.g. Line 1 - user inputs 7 cells of data Line 2 - user amends 2 cells of data Line 3 - user amends 1 cell of data an so on. Unfortunately the terminology for certain items above may not be correct as I am still new to this programming and still on a massive learning curve.At the moment I do not have the code for what I am trying to achieve as I really dont know where to start with it.I am currently able to save the data and have it appear in the "edit" panel however only the cells changed are saved an it overwirtes the initial input.
[code]...
I'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 Replies