Double Execution : Deleting And Updating On Table On Database?
Nov 5, 2010
im having a problem on double execution, this is a part of audit trail on my system, the DELETE FUNCTION is working, but it aint updating, im getting an error - it says that "Syntax Error on update statement" on i tried to manually query it on my access and it is working, i bold the statements that affectes the UPDATE function
Dim burahin As String
burahin = MsgBox("Are you sure you want to delete a customer from the database", vbOKCancel + vbQuestion, "Administrator")
If burahin = vbOK Then
I start my project in vb.net backend is sql server i have completed my design now i start my coding but i am confused for connectivity code whether i used dataset or datable which is good? please give me best connection code for retriving,updating and deleting data from database..
My project involves making a table database that displays student number, surname, first name, homeroom, and grade avg. Through SQL commands, there must be functions to add, update, delete, search by field, and save records to the database.I have already set the database up just fine and displayed it in a DataGridView. Through the DataGridView, I was able to go to the "Add Query" area, and I successfully made the queries necessary for searching by field. However, when I try to do anything other than a search using the query builder (ie start my SQL command with INSERT INTO or DELETE FROM), I ultimately get the message "Failed to get schema for this query"For example, this SQL code (to add an entry to the database) worked when I was in the Query Builder (and the entry that it made is still in the database), but when I finally tried to confirm it, I got the "Failed to get schema for this query" message.Being unable to add entries to the database this way, I tried to do it with textboxes on a form. Each textbox will have one of the fields, and at the click of a button, they would be put into the table. My code is below. I do not know what is wrong withit. When I run it, my fields do not appear on the DataGridView immediately, but I must run the program again to see it. The time after, the entry is gone. So I am not sure how exactly such entries are to be saved.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Try
I have a webpage with a form that is used to edit some object. This object contains a Collection of other objects defined like this: Public Overridable Property Employees As List(Of Employee)
On a form I can delete an employee, add a new one or modify existing one. When I click save new values are sent to the server. On a server I check if the user exists. If exists then I modify its values, if it does not exist then I add it. All employees that exist on the server and were not sent are marked as deleted (State changed to EntityState.Deleted). I try to use the following code (dbCollection = database entities, newCollection = collection sent from the form):
[Code]...
This code does not work, because changing to EntityState.Deleted removes the object from collection, and for each loop breaks, since the collection is modified...I know that I can overcome this problem by using a for loop or adding objects to delete to some other list first, but I hope maybe there is a pattern that would make my code nicer.
I have spent several hours trying to delete a row and insert a row into an Access database using the OLEDBDataadapter and dataSets without any success. I don't get any errors it just doesn't update the datatable. Here is the last version of the code I have been trying to get to work. I have done a lot of searching and have
Data save Private Sub SaveNumDte(ByVal ltoNum As String, ByVal ltoDate As Date) Dim numTotal, x, MaxRows As Integer
I used in Visual Basic 6 to update my MS Access Table to get UPDATED Balance Column. Now my problem is the same code I want to use in Visual Basic 2010 to update SQLserver Table.[code]I have Dataset, Bindingsource and TableAdaptor in Windows Form so with that how can I update my Balance Column. The Table contained 3 columns i. Debit ii. Credit iii. Balance.
I am trying to update the password field in a table called tb_Users for a given username. The following code works fine when I use literal values for the new password and for the Username.
[Code]...
How do I substitute the characters 'whogoesthere' for the contents of a TextBox called TextBox1 and the characters 'Joe Blogs' with the contents of a public varialble called PubUsers ?
I'm trying to figure out why my adapter is not updating my SQL database table. I have a form with 3 data grid views on it. If the user changes the display index, width, or visible properties of the columns I want to save their settings. For some reason the adapters update runs without error, but when I check the database table nothing is updated, why? Does it have something to do with the TableMappings?
I have a piece of code that is suppose to update the password field when the user wants to change password but I get an error line: An unhandled exception of type 'System.Data.OleDb.OleDbException' occurred in system.data.dll error line: cmd.ExecuteNonQuery()
If BindingContext(ds, "login").Position < 0 Then MsgBox("Database Is Empty !", MsgBoxStyle.Information, "Records Management System") Exit Sub End If If ComboBox1.Text = "" Then [Code] .....
I have a form in which I am updating records to table Users in database China.accb. The btnClick sub successfully updates the Dataset. However, the actual table Users never gets the update. What am I doing wrong? The code is below.
I am currently working on a Database that collects information. Firstly, i use a new windows form to collect that data. I have it set up to where, when the form loads, the database is ready to collect the information fields. And then the form closes on the button click to add that data, it does not update that data table view. It adds it once i close the program and debug it again.
Code: (Open the windows form) Private Sub btnAddNew_Click_1(sender As System.Object, e As System.EventArgs) Handles btnAddNew.Click AddNewClientData.ShowDialog()
[Code].....
Problem two: I need to make a button that will increment a cell that was set as an Int, by one, but can't figure out how to put it into code.
i have doing a project using vb.net which a function like insert,update and delete data from database including image. i have successfully insert the image what i did for that is i copy the image to a location named image in current directory of the system and save the path into the database according to the user id.now the problem is, when user need to update the details the image won't update i have an error and when user wants to delete the details, the details in the database deleted but the image not.
Codes: insert data Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
I have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
We are working on an asp.net 2.0 web app that emails users an ical to save to their outlook 2003 calendar. We noticed none of the code to update or delete an item seem to work even though the ical 2.0 spec supports it. We are curious if Outlook 2003 just ignores this?Does Outlook 2007 act differently?We have situations where an event may change or be cancelled which fires off an email notification but the updated ical just adds a new event, it nevers deletes and or moves the original.
I have tried everything.but im not able to insert updat and delete the excel file..im able to connect the excel sheet.the connection also seems to be opened...here s my connection string:
Dim sConnectionString As String Const kunal = "C:" sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
I am leaning VB and have created a basic inventory app for work that consist of 4 tables, CurrentInventory, Surplus, Staff and Category. Each of these tables have a corresponding form. My question is with the CurrentInventory and Surplus form/tables. I want a button on the CurrentInventory Form that when clicked the current record would be transferred to the Surplus table and deleted from the CurrentInventory table.I am assuming that I could somehow use the INSERT command to copy the current record to the surplus table but I am not sure how to accomplish this.
I have a table in where I am trying to delete all the rows except for the first. I did manage to come up with the code following:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim dtRemoveRows As DataTable =
[Code]....
In review, this code sort of holds the first row and clears the remaining rows. However, when I exit and reopen the program the rows return. So in other words, I want the rows to get permently deleted. I have searched and cannot find a solution to permenly delete all rows without deleting the first row.
how to delete all rows from a table in visual basic 2010
Dim CurMembersRow As MembersDataSet.MembersRow CurMembersRow = CType(CType(Me.MembersBindingSource.Current, DataRowView).Row, MembersDataSet.MembersRow)
I try to delete the row of the table from sql server 2005 via vb.net 2005 using textbox to refer the serial no value of the column which is set as primary key, when i click the button to delete it give me this error.
Quote: Conversion from string "error" to type 'Integer' is not valid.Here is the code Private Sub deletebtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles deletebtn.Click
I have a problem deleting specific field in the table. Instead of deleting specific field in the table, the entire row that is selected in the flexgrid is being deleted. please give me idea what code should I add to delete my last row in the flexgrid at the same time delete the data from the database. This is the code i have so far.
Private Sub cmdUnload_Click() Dim db As Database Dim sql As String
I am trying to delete a record from a table by using dao recordset. Currently I am working with the code listed below. Unfortunately i've realised that this code only deletes the first record in my table, whereas I am looking to delete a record form the table with an ID that I would have put in textbox1
Private Sub btnDelete_Click(sender As System.Object, e As System.EventArgs) Handles btnDelete.Click Dim AccessEngine As New DBEngine Dim db As Database = AccessEngine.OpenDatabase(DatabasePath) Dim dbs As Microsoft.Office.Interop.Access.Dao.Recordset = db.OpenRecordset("myTable", RecordsetTypeEnum.dbOpenDynaset) dbs.Delete() End Sub
[Code] my issue is that now i need two cases, first i need a query that will return the date created and modified of the table and i also need to know if its possible to query a list of table names in the database ordered by date created but that have a certain thing in their names. for example the database contains the following tables: [Code] and what i need the query to return is the tables that contain "Data", settings and employees are for the other functions of the program. so the query should return the 4 data tables in order of date created. but i have no idea how to go about doing that in the query, does anyone know how this is done?
I would like to have a pop up messagebox that asks users for confirmation before deleting a record in datagridview and if the record is a foreign key to another table, another messagebox will appear and warns users saying" before you can delete this record, make sure you remove all the related records" I have tried but I don't know how to complete it.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.StaffTableAdapter.Fill(Me.StaffDBDataSet.Staff) BindingNavigator1.DeleteItem = Nothing End Sub
I am having a remote server it has INVENTORY DATABSE , and also iam having same databse in my local system. I want to populate by local database table with my Remote database table through Vb.net code by click a button. How to do this .
I use a dbDataAdapter to populate a DataTable from an unlinked oracle database.I have a dbDataAdapter that I want to insert rows into an SQL Server table using SQLCommandBuilder.I have been trying all day to update the DataTable that references the SQL Server table with the data from the Oracle DataTable so that I can insert the rows.
Working in VWD 2010 Express I have an aspx.vb file with the following connection string:
Protected Function getPasswordLength() As Integer Dim conn As New SqlConnection("Data Source=localhost;database=MyDB;Integrated Security=true") Dim cmd As SqlCommand = conn.CreateCommand()
[code]....
This works when the code is on the web server / which is collocated with the SQLServer.However, when I want to debug, I have to copy to the server. I would like to be able to "debug in place" on my development machine and only copy files to the production machine periodically. Technically the production machine is not in production at the moment, but that's beside the point.Anyway, I followed the following instruction: [URL] I can now see the remote database, functions, etc. on the other machine (from the VWD running on the development machine). However, I thought I should then be able to execute this same code locally on the development machine using ctrl-F5, but I get the following error:
**Server Error in '/' Application.A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)**
