I have the following at runtime I receive the error - Violation of PRIMARY KEY constraint 'PK_TBLPracExclude'. Cannot insert duplicate key in object 'dbo.TblPracExclude'. The statement has been terminated.
Dim Prac_Read As New System.Data.SqlClient.SqlCommand(("Select prac_no As chk_prac_no From dbo.TblPracExclude"), conn)
Try
[code].....
See
Public Class Form1
Dim sql As String
Dim conn As New OleDb.OleDbConnection
Dim da As New OleDb.OleDbDataAdapter
[CODE]...
The problem, The INSERT statement works fine in the form load but not in the button click event?
Im getting an error with my insert statment "Syntax Error in INSERT INTO statement". I do not understand why. Im using global variables from form 1 and using them in form2 and trying to insert them from form2 into the database.
[Code]...
here is my code so far:
Public Sub cmdSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSave.Click
Dim i As Integer
[Code].....
when i click the button, i get a error message saying "Syntax error in INSERT INTO statement". as far as i can tell, i have everything i need to insert a new row into the database, and i dont see why this problem is occuring.
item(0) is an autonumber key field, so that should make a new record by itself, and i have declared the input textboxes as the data() array
I was dabbling in pure Word VBA here and it occured to me that mixing the 'Set'-lessness of .NET with VBA might be confusing to programmers doing .NET Automation. Beyond that, the ambiguity example for Set here (near the bottom of the page) didn't seem to apply to the reason I had to correct the OPs code to include it. Further amusement came from reading some comments by one of the architects of VB here.
View 5 RepliesIm trying to check service on a remote server.. as i was typing this i kept getting a syntax error on AndAlso statement.
Also, how do i add the path to connect to a remote server to check the service?
Private Sub CheckServiceButton_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckServiceButton.Click
' This will check if the service is running '
[Code]....
I have problem with select case statement. When I click the button, nothing have happens.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim google As String
Select Case google
Case 0
[code]....
I am using Visual Studio 2008 and have connected a database correctly as I have done a login that works fine, although when I try to insert information submitted in the text boxes a different table, it doesn't enter after I end program to check it still has no data in.
Dim con As SqlCeConnection = New SqlCeConnection("Data Source=NESdb.sdf")
Dim myDA As SqlCeDataAdapter
Dim myDataSet As DataSet
[code]....
I am having a critical problem in using Insert Into Statement.I made a small program with Two Textboxes 1. txtName 2. txtRollNoWhen I Enter any data in these fields, the Programs runs fine
View 8 RepliesI am fairly new to visual basic 2008 but not to visual basic(vb6). I want to insert a new row in the database table (library.mdb). I connected the database into my project and is bounded by a dataGridview control. I have no problem in getting the records from the database. I used the code under click event of a commandButton, after clicking the button neither the record inserts in the database table nor the program generates any error. The code I used is :
Dim bkrow As LibraryDataSet.Book_MasterRow
bkrow = LibraryDataSet.Book_Master.NewBook_MasterRow
With bkrow
.B_no = B_noTextBox.Text
.ISBN = ISBNTextBox.Text
[Code] .....
Here Book_Master is the database table. LibraryDataSet is the dataset, Book_MasterTableAdapter (not used in the above code) is the TableAdapter. Is there anything missing in the above code? Is there any other method to enter data into the database in visual basic 2008?
While answering this question I noticed that I got the following dialog while atempting to move the "cursor" while an exception was being handled:
Unable to set the next statement to this location. The attempt to unwind the callstack failed.
Unwinding is not possible in the following scenarios:
Debugging was started via Just-In-Time debugging.
An unwind is in progress
A System.StackOverflowException or System.Threading.ThreadAbortException exception has been thrown.
What exactly is an unwind?
i'm having troubles with a linq-to-sql statement and getting a left outer join to work. here is a sample of two tables i'm trying to join and my code that i've wrote.
Table1 Table2
f1 f2 f3 f4 fID f1 f2 f3 f4
val1 val2 val3 val4 1 val1 val2 val3 val4
[code]....
Instead I'm returning ALL values from table 1. I need to return all values from the left outer join where tbl2.fID is null.
I receive an error stating my INSERT INTO statement is messed up.[code]...
View 3 RepliesI've been trying to use an insert into startement for my database project, but i dont seem to be able to get it to work!
[code]...
- In my database, there's 2 table....Log, Application
- I am trying to construct a sentence for my log, something like..
(E.g.: Apply Annual Leave from Monday to Friday)
- Words in bold are to be retrieved from the Application table (database)
Here's my vb code (I am not sure whether I should be using array or not and I am not so sure how to use it too).
Private Sub btnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; data source= H:\Project\user.mdb"
con.Open()
sql = "SELECT * From Log"
[Code] .....
But when I view my Log..something like this appear
- How do I let the array know that the statement is an sql statement, not text??
- or Is there any other way to do it?
i have a query here run in SQL server 2008 which produces the error "Conversion from string "INSERT INTO Faculty (emp_id, lna" to type 'Double' is not valid."
"INSERT INTO Faculty (emp_id, lname, fname, mname, nickname, date_of_birth, place_of_birth, gender, address, civil_stat, contact_num, citizenship, e_add) VALUES ('" + enumm + "', '" + txtlname.Text + "', '" + txtfname.Text + "', '" + txtmname.Text + "', '" + txtnick.Text +
[code].....
Im Trying to insert the values of the datagridview into my table but im having some problems i keep getting the error "Object reference not set to an instance of an object"... need this urgently.. heres my code:
For i As Integer = 0 To DataGridView1.RowCount - 1
DataGridView1.Rows(i).Cells(4).Value = CInt(DataGridView1.Rows(i).Cells(2).Value) * CInt(DataGridView1.Rows(i).Cells(3).Value)
[code].....
I would just like to ask if my insert statement is correct..
when i run my program it returns me an error that says 'syntax error on my insert statement'. this syntax seems to work with sql database, but when i tried on access database it didn't work [code]...
I am receiving syntax error in my insert into statement when I try to use try and catch phrase. The highlighted one is the cmd.ExecuteNonQuery() . What seems to be the problem in my code? I'm using autonumber for the ID so I won't put it manually. I am able to insert records when I don't use auto numbering but I need it so don't have a choice. For my database, I only have 3 fields which are AdminID, Username, Password.
[Code]...
SQLUpdateDataString =
New OleDbCommand("",
ConnectionString)
'I tried the first connection string below below and could not get it to work so I searched on here and found an alternative (further down in this message), but the code errors with 'Must declare the scalar variable @COLO_LEN"
'SQLUpdateDataString.CommandText = "Insert into [ICMS_CRD_CABLES](COLO_LEN,COLO_PAIR,COLO_CABLE) values ('" & NewLENTextBox.Text & "','" & NewPairTextBox.Text
& "','" & NewCableTextBox.Text & "')"
SQLUpdateDataString.CommandText =
[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 an aplication to manage images that are going to be used by other aplications.
I need the aplication to generate a script with the insert statements of the new images added to it - so that it can be distributed to the clients.
I dont know how to parse the byte array to do it correctly.[code]...
I am using this code for my project. What I am not sure is that when I search on the net, they use the "@id" for the insert statement.[code]...
View 3 RepliesError with INSERT INTO statement
how to set the INSERT INTO statement...?
i had check my note and some tutorial.
it look same like i did.[code]....
I'm using a gridviews Row Updating to add edited fields into a table for monitoring. Everything seems to work except for the one value, as shown below. [code]...
View 3 RepliesUsing a sqlcommand is it possible to use subqueries in an INSERT statement? I attempted the following (and numerous variations playing around with syntax):-
Using insertuser As New SqlCommand("INSERT INTO Users (UserID, Name, Password, Phone) " _
+ "VALUES((Select MAX(UserId)+1 as UserId FROM Users), @name, @password, @phone)", conn)
Errors with 1046: Subqueries are not allowed in this contect. Only scalar expressions are allowed. The scenrio is the userID is hidden from the user and does not appear on the form, I want to find the last value (MAX) userId (integer) and increment by 1. Errorcode 1046 suggests I can't but was wondering if it can be done but was going the wrong way about it.
How could i put an SQL statement in vb.net like the SQL injection is this possible??Im trying my system if someone can use the SQL injection in vb.net im using parameters and the other has no paramters if it is possible for them 2 insert the sql injection. . . .this is our project in our Major subj. and this is one of the req. how 2 prevent the adversary to delete the data. . . .my problem is i dont know how 2 try the SQL injection inserting it in my system but it doesnt work
View 10 RepliesI am using SQLite.When I try to insert data into the tables I get the following:Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.I am using ADO.NET 2.0 Provider for SQLite?
View 1 RepliesI'm sure that I'm missing something really basic here, but I'm just not seeing it. I have the following
Public Sub InsertRow()
Dim employeenumber As String = employeeListBox.SelectedValue
Dim headsetnumber As String = headsetnumberText.Text
[code]....
and when I put a break point on the command.ExecuteNonQuery line, and then step through that, I'm never displayed the thankyouLabel.Text nor is my data being inserted into the database.
I am having trouble with the insert command, my code is:
Protected Sub btnTestator_Click(sender As Object, e As System.EventArgs) Handles btnTestator.Click
Dim WillsDataSource As SqlDataSource = New SqlDataSource()
WillsDataSource.ConnectionString = ConfigurationManager.ConnectionStrings("ConnectionString").ToString()
[code]....
aatblWills1 is my sql server table with 3 fields: WillID(PrimaryKey, integer auto increment); UserName(nvarchar(150)) and TestatorName(nvarchar(150)) (there are some other fields in the table but I've set them to allow nulls)I am not getting an error message, it is just not inserting any records into the database.