I'm trying to delete a number of records in a table from the last and forward. My idea is to use sql like this: delete top " & variable & " * from table where ID = something It gives me a general sytax error. Is it at all possible? Fuga. Edit: I also have the order by statement there. I just forgot to put it in the question.
View 5 Replies
I want to know how to Update / delete the table records in ASPNETDB.MDF in single update / delete query ?
View 1 RepliesI try to delete all record in a table (.mdb msaccess) and I have the next code:
Me.Validate()
Me.Db1DataSet.Tables("tabl").Clear()
Me.TablAdapter.Update(Me.Db1DataSet.Tables("tabl"))
Me.Db1DataSet.AcceptChanges()...
But this don't change my table...
I am trying to delete duplicate records present in my database table using record set the code that i have tried is below [code]it is not showing any error . Then i tried to debug and the flow goes from While rec1.EOF = False directly to con.close.
View 2 RepliesI'm trying to use a DataGridView Control to Add/Edit/Delete records in a simple database
table.I used the wizard to create the datagridview and it created a dataset a bindingsource
and a tableadaptor.When i run my project, data that is in the database table is displayed
correctly, but I can't add/edit/delete. What events/actions do I need to perform to add
these capabilities?
*WeightCheck is a dataset connected to a mdf SQL server file..Datagrid on form is bound to the dataset..This code executes because datagrid on form updates with the deletions..[code]
View 1 RepliesWhen I run the program it will populate the listview but when i delete the selected item it will clear all of my records in my listview. . . .can anyone elp me with this??This is my code. . . .
[Code]...
How can be find out which file is going to delete when, user provides command like DELETE or SHIFT + DELETE or by programmatically gives DELETE command. Well I know about FileSystemWatcher Class, but this class doesn't provide information before delete...
View 1 Replieshow to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.
View 1 RepliesI've found a sql string like: "SELECT Count(*) FROM table"My question is: how can I use this string and get the result into a variable in VB2010? I used to program with VB6 for years, but now things are very different.
View 1 RepliesThe following code deletes the records from the table on run time but not actually from the MS Access database. I have deleted all the records and when I restart the application, all records are exist.
How to solve the problem?
[Code]...
imports System.Data.SqlClient
Public Class Form3 Inherits System.Windows.Forms.Form
Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
Dim ra as Integer
[Code] .....
Attached File(s)
deleting.txt (793bytes)
Number of downloads: 9
Is it possible to delete all records from a bindingsource without using a loop? My binding source is a dataset table
View 3 RepliesI use this code to get row id from dgv to delete that row after that
Me.
TextBox1.Text = DataGridView1.Rows(e.RowIndex).Cells("id").Value
Now how can I amend this code to use it to get sevral rows ids in case that I want to delete more than one row ?
how to delete a record from datagrid, i tried the following code but it gave me an error in deleting records, I am using Mysql Database.
Following is the code:
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
'recorddelete()
Dim sql As String
Dim db As New DBHelper
[code]....
I think problem is in this line, may be syntax problem:
sql = "delete from budget_details where ID = & DataGridView1.CurrentRow.Cells(0).Value.ToString()& "
I am using the code below to delete reocrds , but when i restart the program they reappear.How do i commit the deleted records.[code]
View 3 RepliesWhen I modify and delete data in a DataGridView, I get the error:
The record cannot be deleted or changed because table 'Table Name' includes related records.
but I can add new data, only cannot modify and delete data.
Ive created a form to add/delete/update records in a database ,but when i try and open the frm i get a NullReferenceExceptionUnhandled error, below is my code, i cannot for the life of me see where i've gone wrong, but maybe someone else can spot it?[code]
View 2 Repliesadd edit and delete records in access using vb.net.i got textbox 1 to5 and three buttons which named addnew ,edit, delete.my database is in name records.mdb i want user to enter the information and click addnew button and the system save the records and so on with edit and delete.
View 3 RepliesI'm creating an application that adds and deletes records from a microsoft access database. The language I'm using is VB2008. I am importing the database through a wizard. I can add records and delete records, but I cannot delete a newly added record without closing the form first. When i reopen the form, I can delete the record. Here is how I have my database setup:
'Bind user info to the controls.
AUSERDataSet = New BulldogUsersDataSet
AUSERTableAdapter = New BulldogUsersDataSetTableAdapters.UsersTableAdapter
AUSERTableAdapter.Fill(AUSERDataSet.Users)
' Setup the binding source.
AUSERBindingSource = New BindingSource
how to do it, but the tutorial is not applicable on the program that I wish to do. The tutorial tells you to add 4 navigation buttons so that you can navigate the database(first, last, back, and forward). Then an update and delete button. But if this is what I will do, it would take 10 years to navigate the database and update a record. Now, what I want to do is just for the user to input a unique ID and click search button(which I have already done). Then the update would be easier. How can I update or delete a record using this method?
View 1 RepliesI currently have a sql database linked to vb.net and I'm populating the comboboxes using SELECT statements. However, I'm getting duplicate records in the comboboxes.I have my database setup as 1 project to many submittals and 1 submittal to many items.
I have 3 projects in my sample dataset and I'll recieve 3 duplicate submittals and 3 duplicate items.
If I have 6 projects in my sample dataset than I'll get 6 duplicate submittals and 6 duplicate items.
I've tried adding distinct to my SQL statement, but that didn't do anything. Is there any reason why its showing as many duplicates as I have projects?
i have 3 tables in ms access that is patient , NOK,and admission they have related fields, i am using vb 2005. when i delete a record from the patient table i want the related records from the other tables to be deleted.
View 1 RepliesI have a project that I am working on that requires me to delete records from the database if they are atleast 3 years old.I have something like this in DB2 SQL to get the date:
SELECT * FROM tableA
WHERE ADD_DATE < CHAR(CURRENT DATE-3 YEARS)
ADD_DATE is stored as Characters in my system, this is why I am converting I know it is also possible to get the date and format it in VB.net which is the language I am using to call the SQL statements.My question is whether it would be faster/better to get the date and perform the conversion inside the SELECT in SQL or would it be better to get the current date and convert it in VB.net and then use that date in the SQL statement. I'm thinking VB.net would be better because there are thousands of records that must be compared. I should be able to set it up in VB so that it only retrieves the date and converts it once but I am not sure what kind of performance hit each takes from these statements.
I have a database which contains 60K null or blank records. These records contain several fields, all blank or null. I am using the following code, which I know works if there is text in the field, but if it is null or blank, I get negative results.
Dim
rv As
Integer
[code]....
how to check for null in an executenon query command?
how can I delete a records in access dataabse except for sql query my code is this I would like to know if this code is wrong or not
Private Sub BindingNavigatorDeleteItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigatorDeleteItem.Click
[Code]...
I have a datatable populated from an SQL Server 2008 database table. I created a DataAdapter with a commandbuilder to manage the updating, inserting, and deleting of records. The Updating and Inserting work as expected. However, Delete does not. The code runs through just fine without any errors. The number of records in the datatable after the row is deleted even reflects the deletion. The DataAdapter.Update works fine without any exceptions. But when checking the actual table in the SQL DB the deleted record is still there.Here are the parts of my code that deal with this table.
[Code]...
1- How to delete & update any record in the DataBase in vb.net?
2- How to make search & advance search about any record in the DataBase in vb.net by date,ID ........etc?
how to use datagridview and why and when we use adaptor and data reader
View 1 RepliesI'm creating a project using Microsoft Access 2007 & Visual Basic 2008.I have two tables in my database, Staff and Training Attended. The Training Attended records of Staff are displayed in datagridview, residing in a different form from the Staff detailsWhat my program does is, it will display all of the Staff's list of Training Attended in datagridview once I click the button in Staff form. I've succeeded in retrieving the records. using bindingsource.filterThe problem is that I can't insert/update/delete records in the Training Attended datagridview. it keep giving me this error: Update requires a valid UpdateCommand when passed DataRow collection with modified rows.
View 2 Replies
