How to make only one record at a time get inserted in the database table and also delete from the other table?
Once the details are filled ,I insert it in table1 as the new record and I delete the same record from table2.[code]...
I need to disable a button after its pressed so the user does not have the ability to click it again as this would replicate the process in some cases.After alot of searching I found some tips - alot of code I found I could not understand.This is what I have come up with:
On page load:
If Me.Page.IsPostBack Then
'lblDetails.Text = "disabled"
[code]....
I also read somewhere that I should use: System.Threading.Thread.Sleep(1000) to delay the process or something - not entirely sure why I would do this though.Although, the problem with my above code is that when the code behind page performs validation checks, it exits sub before executing my INSERT SQL code - so when it does this it also disables the button.I am not entirely sure if the above method is fool proof or whether it is a **** piece of code that won't work 100% of the time.On another website I found a script to put on the actual HTML page with <script> tags:
Code:
<script type="text/javascript">
disableSubmit(frm) {
[code].....
I need to disable a button after its pressed so the user does not have the ability to click it again as this would replicate the process in some cases. After alot of searching I found some tips - alot of code I found I could not understand.This is what I have come up with:
[code]...
I also read somewhere that I should use: System.Threading.Thread.Sleep(1000) to delay the process or something - not entirely sure why I would do this though.Although, the problem with my above code is that when the code behind page performs validation checks, it exits sub before executing my INSERT SQL code - so when it does this it also disables the button.I am not entirely sure if the above method is fool proof or whether it is a **** piece of code that won't work 100% of the time.On another website I found a script to put on the actual HTML page with <script> tags:
[code]...
But although this works, it does not execute my VB code in the code behind page so I am a little confused where to go here.
I 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 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 need to duplicate records with duplicate records, but only if the first three columns out of 5 columns are duplicates. I am using MS ACCESS with VB.NET. How do I loop through the records and delete records with three duplicate columns
View 1 RepliesPrivate Sub CenterSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCenterSearch.Click 'Center name is required. If it not there, ask for it.
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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.
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I'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 RepliesI am trying to Insert/Delete records in a MSSQL database based on if a checkbox is checked or unchecked. The checkbox is an item template in a datagrid, I can check/uncheck the checkbox but it doesn't do an insert or delete. Here is my code:
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But then I get the error that the control chkmap has not been declared. I am confused as to how this needs to be declared, do I set a variable to the FindControl("chkmap") and then set it as variable.checked = true ?
how can i access the sql server express database table in vb.net on forms to insert records,delete records,search records,edit records.I have made table by using visual studio.
View 5 RepliesI am rather new to vb.net using SQL CE. This is using 3.5 framework. I am trying to use a button to insert records into a table in a SQL CE database. Rowsaffected returns a value of 1, but when I preview the data, the row is never inserted. The sql statement I am using uses hardcoded values only because I am trying to get this to initially work. Once I can get the insert statement to work, it will use variables based on user input.
Here is my code that I am using:
Private Sub cmdInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdInsert.Click
Dim connstr As String
Dim rowsaffected As Integer
connstr = ("Data Source =" _
+ (System.IO.Path.GetDirectoryName(System.Reflection .Assembly.GetExecutingAssembly.GetName.CodeBase) _
+ ("jhepfner.sdf;")))
[Code] .....
The original database that I am using is c:jhepfner.sdf. When I run this, connstr shows:
Data Source =Program Filesjhepfnerjhepfner.sdf;
In server explorer, it shows the connection string as:
Data Source=C:Documents and SettingsCompaq_OwnerLocal SettingsApplication DataTemporary Projectsjhepfnerjhepfner.sdf
I have used this form to add new records on my database(ms access) in my database I have a column name 'ID' which is my primary key 'ID' is set as auto number. Now I am having a trouble on creating my update and delete button it's always saying "cannot be delete/update"
Here's my code on add, update and delete
Public Sub SaveRecord()
Try
Dim dbConn As OleDbConnection
Dim dbInsert As New OleDbCommand
Dim str1, str2, str3, str4, str5, str6, str7, str8, str9 As String
[Code] .....
Note my add is working perfectly fine. I just can find the error on my delete and update. Also I have used this to view it to my datagrid I don't know if its the right thing but it's working fine too.
'declared dbpath globally'
Dim dbPath As String = "Provider=Microsoft.Jet.Oledb.4.0; Data Source=../VG.mdb;Persist Security Info=False"
[Code] .....
Another thing is how to code each textbox and combobox to bind it to my records so that when I click on the datagridview each column will be distributed on each respective textbox.
I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the
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1. Can someone show me sample codes on how to do that ?
2. I encountered a problem with the INSERT sql statement. I keep receiving syntax error in insert statement exception. Is there anything wrong with the statement ?
[code]...
I create many buttons in code like :
Public Sub GenereTextBox(ByVal rep As String)
Dim txt As New TextBox
Dim fnt As Font
fnt = Me.Font
txt.Location = New Drawing.Point(26 + NbreCacher * (68), txtOrdonnee)
[Code] .....
And I want delete some buttons create when I click on my button, but I don't how I can do, because these buttons are create in code??
how 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'm trying to code the delete button in my binding navigator and I keep running into errors. This is what I have:Dim msg As String = "Are you sure you want to delete the current record? " If MessageBox.Show(msg, "Confirm Delete", _ MessageBoxButtons.YesNo) = DialogResult.Yes Then _CustomersBindingSource.Remove(DataGridView1.CurrentRow)
End If
Me.TableAdapterManager.UpdateAll(Me.DatabaseDataSet1)
Even when I change it to _CustomersBindingSource.CancelEdit and I debug it, the Delete button in the binding navigator looks like it set to enabled = false, but in the properites it's set to true.Even if I add enabled = true at the top
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 RepliesI have a binding navigator in my project and it works just fine.My question is where, if at all, can I find the code that is run when the delete button on the navigator is pressed.My reason for wanting to know this is I want to be able to give the user a second chance when the delete button is pressed.I want to ask the user if they are sure that they want to delete the record by using a msgbox.If the user says yes I will delete if they say no then I do not want the record deleted.I tried putting logic in the BindingNavigator DeleteItem_Click but was not successful.
View 7 RepliesIs there any code that will delete the content of a text box on a button click.Eg,On button click clear textboxes in form1?
View 3 Replieswith vb.net + access 2007 i am having a access database with about 4 lakh + records the table is having a Autonumber field + other fields like crewID, dutyDate,DutyOn,DutyOff,Dutytype,allowanceOftheDay.... etc
i need to check for the duplicate records that is i need to compare each record with remaining 3 lakh change records ( crewID + dutyDate + DutyOn + DutyOff + Dutytype + allowanceOftheDay ) = ( crewID + dutyDate + DutyOn + DutyOff + Dutytype + allowanceOftheDay )& if exists i need to delete the same using Autonumber field the group by class of the query is not working i tried to loop through each record through front end but it is taking more than hours
I have a windows form application that connects to an access database. When the program is running it connects to the database and populates several textboxes that are bound to the dataset. I have been researching for 2 days and cannot find exactly what..I need, although a few threads have given me a better insight into my dataset. I would like to type text into a textbox that is bound to the primary key and when I tab out of the textbox (lostfocus event) have the program do a quick search of all records in the dataset of the primary key and if a duplicate exists, msgbox the user that that particular text is a duplicate and is not allowed, however if the text is not a duplicate, continue the tab keystroke allowing the cursor to move to the next textbox bound to the database.
View 4 RepliesHow can I avoid a first chance exception here. I need to use the cancel button to jump around the remove at code. The exception is caught and the bail out goto works, it is just the first chance I'd like to get rid of.
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I'm currently using a timer to check for the time of midnight.At midnight each day I have to add a bunch of records into a database.My windows form program will be POSSIBLY running on multiple computers at midnight, meaning I may get duplicate records, because each running program will detect midnight at the same time and add the records accordenly.
View 3 RepliesI have a whole bunch of duplicate records in my table. Using select Statement I want to display those records. the table name is Labs1 The 3 columns are:
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I am new to this forum and I state that I am a beginner in visual basic. I need help with a program I'm doing for personal use. I have an Access database connected via wizard to visual basic 2010, from wizards automatically as I dataset and TableAdapter bindingsouce, a datagrid on the form and text, and buttons for various rescues etc.. My problem is that I need to do a count of duplicate data, I have a table Inserimento_veicoli (Ex. count model vehicles like the Fiat Punto) and I managed to find the right code
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The following code inserts same data two time in database table, but I want it to insert only one item when button is clicked.What is the problem in this code?
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
If RadUpload1.UploadedFiles.Count >= 0 Then
[code].....
I have this piece of code wich works perfectly when inserting records into one table using records from another table. My question is that now i need to create another table by using records from 3 other tables (tables are related). Can i use aliases on the column names, like on Oracle SqlPlus? How will be the syntax of the 'INSERT INTO SQL statement?
Dim MyConn As ADODB.Connection
Dim MyRecSet As ADODB.Recordset
Dim tmpSQL As String
MyConn = New ADODB.Connection
[code]....
how to prevent duplicate RECORDS in datagridview cell vb.net
View 2 Replies