[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 writing an application that does a number of different things with data downloaded from hardware which is monitoring the power used in my home and produced by my PV Solar array. I have run into a roadblock early on, because I cannot seem to get new data into an Access database that I have linked to my application by means of a DataSet. I have checked the DataAdapter's InsertCommand, DeleteCommand, and UpdateCommand definitions (created by the DataSet Wizard), and they seem to make sense, and nothing is throwing exceptions or otherwise making VB complain, but new rows added to the dataset are not being added to the database.
[Code]...
I 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]....
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
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 created a query off a dataset with a where = @param. This poulates a dgv.
I then have created the parameter by using the Parameter collection editor.
Then on my form I have Textbox1.Text that has the value I want to pass to the parameter @param.
How do I get that value in to the @param?
I have an access database that I would like to add a row to. Contents of the row are entered through text boxes. The problem I am running into is the data is not being saved to the the dataset. It only saves to the TableAdapter and is visible in DataGridView.[code]
View 1 RepliesI am working in vb2008.TableAdapterManagers are a new feature in vs 2008 and I would like to understand how to use them properly.I have about 30 tables in my database that are unique to themselves and donot link to other tables.I have created a dataset.xsd in my solution and dragged in my database tables of interest.A unique datatableadapter has been identified in the dataset1.xsd for each datatable.Rather than using the identified datatableadapter for each datatable operation, should I be using the dataadaptermanager for each unique table?
View 1 Repliesi'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].....
I am trying to query WMI to get the current IP address of the computer.I have the following code, which queries the MAC address, and this works fine.But if I change the query to "ipaddress" (a valid property), I get a run-time error, something about a type mismatch [code]
View 4 Repliesthe 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]......
user.fld_usr_name is a string with the value random name user is an object that is given as a parameter
ByVal user As GUser
this is the linq query that doesn't work
Dim result = (From usr In users Where usr.Name.Contains(user.fld_usr_name) Select usr).ToList()
this is the one that works
Dim result = (From usr In users Where usr.Name.Contains("random name") Select usr).ToList()
this is the error
Object reference not set to an instance of an object.
I am using this in Linq to Active Directory library which probably means it's linq to entities I've tried everything?
i am creating a pda application using vb.net and sqlce and i can't seem to get parameterised query (or atleast i think mine is one) working.i dont know what i am missing because on the code below, i still get a END OF STATEMENT EXPECTED.[code]
View 2 RepliesPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Master.Text = "8888" Then
[Code]...
i dont know whats rong in this , it says syntax error at * if i delete star then query runs but database still contains the row. FYI its code for desktop application using vs2008
statement = "SELECT OrderID, (SELECT VendName FROM Vendors WHERE Vendors.VendorID = Orders.VendorID) " &
",OrderDt, RcvdDt, OrderTotal " &
"FROM Orders " &
"WHERE VendName=? " &
"ORDER BY OrderDt DESC"
Dim cmd As New OleDbCommand(statement, connection)
cmd.Parameters.AddWithValue("VendName", txtVendorFilter.Text)
Dim reader As OleDbDataReader = cmd.ExecuteReader(CommandBehavior.Default)
I was trying to do this before by simply concatenating the textbox value right into the SQL and I was getting a "No values given for required parameters", and read that that I should use parameterized queries instead. So I tried this and it doesn't give me any errors, but the reader never has anything in it. I've never used parameterized queries before, so I'm a bit lost as to why this isn't working. I've changed the above code to account for OLEDB from what I briefly read on how it should work, and it's giving me the "no values given for required parameters" again.
I have a SQL query string that gets the top 5 records from a database however 3 variables are passed with the sql query that gets specific data.[code]
View 5 RepliesI am developing a Windows Forms application using VB.NET in VS 2008 on Windows XP SP3 32-bit. When I try to insert into an MS Access Database table using the following code, I get an exception on the last line with the message "Error in Insert statement". When I paste the same statement as a SQL query in MS Access itself, it works just fine.
Dim oCmd As OleDb.OleDbCommand
sQuery = "Insert Into DirectoryShares (directoryID,username,read,write) Values (?,?,?,?)"
oCmd.CommandType = CommandType.Text
[code].....
i have a query that when i updating my database it doesnot take *,&,-,#,@ all these,but when add a new database its taking all above i have fields of roll#,Sname,Age and address?
View 1 RepliesI have Sql query consists of multiple tables in ms Access database(has Join Right/inner join) and I would like to insert and Update data on it using ADO.NET.
View 6 RepliesI am currently Building a Stock Control System for a School Project and Using access 2007 with Visual Studio 2010 to build the VB.I am trying to use an INSERT INTO SQL Command to insert new stock items into my Access DB. I am getting an error thrown at me when attempting to execute the NonQuery().
This is my code
Dim con as new OleDBconnection (Connection String)
Dim cmd As New OleDbCommand
[code].....
sql="SELECT PartNo, Model, Manufacturer, Description, NumberinStock FROM Stock WHERE Description LIKE '%" + "my String Here" + "%' ORDER BY Manufacturer ASC"
View 8 Repliesi have problem passing the value from my G1_value1 and G_value5 from G1_select.. the system cannot do update to my table tblreshdrk1 anyone can guide thorught this code ?
Private Sub Print_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Print.Click
Dim G1_select As String
Dim G1_value1 As String
Dim G1_value2 As String
[code]....
ok, trying to put an INSERT query into my program, but not sure the exact sytax, i know the query itself, but not the rest of the code to get it working.
View 2 Repliesi created an insert query to add data to my table.i am using SQL CE database. When i run it and insert it is showing an error which as follows.
[Code]....
I have searched everywhere to find a solution for this. I am a beginner and in a tutorial i have seen they did it with access DB without any problems. i did the same but for SQL CE DB, i probably did something wrong or missed some steps.
I'm moving over date.oledb commands to SQL ones and wondering what the equivalent to executenonquery here is? This is what I have at the moment and I can bind select queries to datagrids no problem how would I get the DBCommand to execute the query?
Dim DBConn As SqlConnection
Dim DBCommand As SqlDataAdapter
Dim DSPageData As New DataSet
[code].....
when 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].....
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 RepliesI 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].....