Delete A Row From A Database?
Oct 28, 2010The user logs into the application and then they want to delete their record.How do I delete it from the dataset first and then update the database?
View 2 RepliesThe user logs into the application and then they want to delete their record.How do I delete it from the dataset first and then update the database?
View 2 Repliesmy deletecommand delete all my rows whenever i delete a row..but when i view it again the other rows still there and the i deleted is actually deleted.[code]
View 5 Replies*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 RepliesMy apologies I have posted this in the wrong catagory It should be in VB.net, my mistake)Hi guys I posted this question at the end of another topic I started but I think it will be over looked as the origional topic was solved of the dreamincode community You must all be getting sick of my quexstions by now haha I suppose you don't learn if you dont ask.
Anyway I have used the delete sql method to delete data from a database, I want to refresh the data in the form after the record has been deleted. Do I have to close the form and then open an new instance of it? or is there another way I can refresh the data?
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[code]....I have a dialog that comes up and asks for a reason for declining the business.I don't want the code to move on after not enabling the "me" until the reason has been entered and saved into the database. Also, at that point where it says "I WANT...." I want to copy the textbox fields into a new database and then delete this entry from the database, how can I do that. I am using VS 2008 and SQL.
View 2 RepliesHow 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 RepliesI got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Try
btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
I'm trying to delete a value from a database using the following code, and I have no idea where it's going wrong. It gives the messageboxes saying the operation goes through ok, but doesn't actually delete the data. Here's my code :
Dim TuneTitle As String = TuneTitleBox.Text
Dim FilePath As String = FilePathBox.Text
Dim DataCommand As New SqlCeCommand
Dim DeleteString As String = "DELETE FROM Music WHERE TuneTitle ='" & TuneTitle & "' AND Filepath ='" & FilePath & "'"
[code].....
I am able to connect to the server and database, but I am unable to find a command anywhere to delete the datbase.NOTE: I dont want to delete entries in the database, I jsut want to get rid of the whole thing. Also, I would like to back up the database before deleting it.
View 7 Repliesthe code for delete a record is just below,but
im
custIdentidade
As
[code].....
how to delete a record from a simple database I've been working on. The code is as follows:
[Code]....
I can;t seem to get this right. the application i'm creating lets the user select a record in a list view(lvList), and by clicking a remove/delete button, this will happen.
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I want to do that ( whole content of table)?i remember not clearly, it seems using 'drop' table.
View 4 RepliesI'm trying to delete an entry from my database, i have the code written to display the details in a listbox but now i need to write the code do the user can select the item they want to delete and then click the delete button to delete it? I just want to flag it as deleted not get rid of it completely from the database?
View 5 Repliesim having a bit of trouble with the delete and add record for my database. [code]The error im getting is Update requires a valid UpdateCommand when passed DataRow collection with modified rows.
View 1 RepliesI always have trouble with this every time I create a desktop app which needs to update data from a database.So, I have created and coded my form to load data into a data grid view control, I can add data to the data grid view and it updates fine but when I come to delete a line, I get the error message below
System.InvalidOperationException was unhandled
Message="Dynamic SQL generation for the DeleteCommand is not supported against a SelectCommand that does not return any key column information."
Source="System.Data"
[code]....
I been tring to delete a row in my database for some time now.
I have tried a number of ways none of which have been succesful
Code: Private Sub TVDeletebtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TVDeletebtn.Click
Dim modelnumber As String = DVDModeltxt.Text Dim cmdbuilder As
[Code].....
You can see my various attempts. my orignal attempts where following the following guide [URL] when the dataAdaptor.Update(TVData, "Television") runs it trys to target one of my other tables and an error is caused.
i am doing with deleting row permenately from database currently,but the problem i face right is that i can delete row from datagridview only, but the data inside database remains unchange.I want to delete a row which i selected determinately when i click a delete button .
Here is the code that i written...
Private Sub Delete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Delete.Click
conn_1.Open()
Dim sqladapter_1 As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter("select * from Table_1", conn_1)
sqladapter_1.Fill(sa, "Table_1")
[code]....
this is my code but is not correct
Public Sub ChangePosition()
If Me.BindingContext(DataSet1, "t_bul").Position = -1 Then
Label1.Text = "Record 0 from 0 "
[Code]....
how to add edit delete using sql.
View 1 Replieswhy cannot delete the record? my code
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
[code]....
I'm asking is for someone to provide me some tutorials or something that can get me on the right track to help me connect an access database to a VB 2008 application. I need to be able to add, edit and delete this database through the Visual Basic application.
View 2 RepliesI have connected my access database to vb.net and program is capable to show the database in the datagridview. but what i want is when i change the data in the datagridview and click onto update button,changes i made should be saved in database so when i execute the application again i should be able to see the updated database in the datagridview.
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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 RepliesI have to create a SQL server DB that has a table named people with, people_id int PK IDENTITY, firstName varChar(30), lastName varChar(40 (completed) create a windows program that lists the firstName and lastName combined with a space detween them in a listBox (completed)provide functionality in code using command objects/parameters (no wizards) to add and delete from database and reflect the changes in the listBox..I am having trouble with the delete. [code]
View 5 RepliesAdd, Delete, Edit and Update from the database using .NET?
View 1 RepliesI need to backup sql database, below is my VB code to do backup, shrink and delete. But I have problem to shrink the database. Need your help to find what's wrong for the shrink potion. the error happened when execute CmdShrink.ExecuteNonQuery().
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I'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
Problem with my application. When I want to delete a contact from a database it does it fine, but on reload it adds another item to the combobox instead of taking the other away. Can't see anything wrong with my code though?
Imports System.Data.OleDb
Public Class DeleteContact
Public strSQL As String
[CODE]...
in my form..there's a couple of textboxes..these textboxes display data from the database using databinding method...my problem is when i click on my delete button to delete the data displayed in those textboxes...the data will be gone from the textboxes...but when i check my database..the data is still there.....how do i solve the delete button problme???...i want the data to be delete from the textboxes AS WELL AS from the database.
here's my delete button code
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Dim intresult As Integer
Try
[code]....