I'm using vb.net and I have connected a database to it. As per my interface I should add, delete, go back, go next and save my records. All the buttons work apart from delete. The problem is I do not know the codes for deleting a particular record during the run time, how to work with the codes and steps of deleting a particular record.
View 13 RepliesI 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.
View 5 RepliesI have a form with a DataGridView binding to an Access database. Everything works fine and it populates perfectly. Except when I delete a record. I get the following. I found a few threads about the issue but I cannot resolve the issue. Can some one give me a step by step to resolve this. [Code]
View 4 Repliesi'm having a problem regarding sql deleteCommand..
here's my code
Private Sub btnDeleteBC_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDeleteBC.Click
If MessageBox.Show("Do you really want to Delete this Record?", _
[Code].....
I can delete record but it only checks for the username.How bout for the password?Can I use
("delete from tblogin where username=('" & txtUsername.Text & "') AND password=('" & txtPassword.Text & "') ", sqlconn)
so that it can also validate the password?
Private Sub btnDeleteuser_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDeleteuser.Click
sqlconn = New SqlConnection("server=CHERRIE-PC;Database=yss;integrated
[Code].....
It is possibe to add a word to a listbox at runtime using an inputbox. Is there a way to delete a word from the list in a listbox at runtime?
View 2 Repliesin my visual basic 2008 express edition project I have 2 forms (paxreportfrm,paxsearchfrm).I want to give inputs in paxreportfrm and save the record(which is working fine).then in paxsearchfrm i want to search depending on multiple criteria (working ok).when i click on the record which is in gridview in the search form,opens up the paxreportfrm again with all the details of that specific record (working fine). Now i want to update the existing record which has been populated from the gridviw of the paxsearchfrm and also want to have the option to delete the record.I am using the datacontrols(wizard) to make connection with the access2007 database.can someone give me some example of how to do the Edit and delete in the database pls.I already have a save button on the paxreportfrm(if i click on that, after changing the details on existing record, it just saves IT as a new record).so i really need something which will actually save the modifications on the existing record AND ALSO WILL BE ABLE TO DELETE IT FROM THE database. I have tried couple of methods but none of them are working.
View 4 RepliesI have this problem : Dynamic SQL generation for the DeleteCommand is not supported against a SelectCommand that does not return any key column information.... the button used to delete record in my project is button6 at the end of the code
My code :
Public Class Form1
Dim con As New OleDb.OleDbConnection
[CODE]....................
I'm encountering a problem on how to delete a selected row in a datagrid. This error occurs, "Missing the DataColumn 'ID' for the SourceColumn 'ID'."[codde]
View 3 RepliesI want to allow the user to select which table they want to be displayed in the datagrid by selecting the table name from a comboBox - this bit I have managed but I want to limit the number of columns displayed. Each of my tables have the same fields (it is for a plant database, there is a table for each type of plant tree, shrub etc) so I know the column headings but
View 2 RepliesI have an MS Access database that has a field called DeletedDate. I want to use a Delete statement that will delete the record(s) when DeleteDate is 30 days old or older. I have tried several different Delete statements but none seem to work properly. They will always delete some of the records, but will leave some records where either DeleteDate is older than 30 days or will delete recored where DeleteDate is not yet 30 days old. I have tried these using DeleteDate as a Text field and as a Date/Time field. Which should I use? These are the Delete Statements that I have used:
'sComm = "DELETE from Agents WHERE Deleted = 'Y' AND DeletedDate < " & System.DateTime.Now.Date.AddDays(-30) & "
sComm =
[Code]....
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
what happens is i have a weekly salary table and once a week an administrator computes the salaries and it will be saved there, i want the delete code to delete the already saved record with the same Emp_ID as what i'm trying to save. my problem is i don't think the code i put deletes the record because it will still tell me that there is already an Emp_ID the same with what i'm trying to save..
so far this is my code..
Dim cnn As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source = C:UsersFlorieDocumentsVisual Studio 2008ProjectsPayroll SystemPayroll Systemobjx86DebugPayroll_MaryRoseAn.accdb")
Dim cmd As New OleDbCommand
[Code].....
Want to know how to create a exception handler if say you have a form that has a foregin key in it, how does one put an exception handler to prevent the operation of this producing a VB.NET Error when i want to delete a record?
View 1 RepliesI have now got a DataGridView on a form with a toolstrip which automatically created for me when I dragged the DataGridView from the DataSources on the Solution explorer window. I now would like to know how can I have a pop out window saying " Are you sure you would like to delete xxx?" with a OK button and Cancel button.
View 7 RepliesPublic Class Form1
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 'Clear the default value of BindingNavigator's DeleteItem property
End Sub
[code].....
When I selected a record in datagridview and hit delete, it always deleted the first row in the datagridview then if I tried to delete any of the row again, it would not let me. I would like the selected row to be deleted,how I can do that?
I have a form with a parent bindingsource showing details and a child bindingsource showing the multiple line items in a dgv. This relationship has the properties set to enforce the constraints and cascade the updates and deletes. When I add a new parent record there is a function for inserting default line items into the child. I have this code fr deleting a record,
[Code]...
edit: jmc posted a nice solution to this problem in the code bank just recently but I could not get it to work in 2005, this line, "AddHandler Me.LOTBindingSource.Adapter.RowUpdated, AddressOf parentAdapter_RowUpdated" throws an error. It say "Adapter is not a member of the System.windows.forms.bindingsource.
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
[code]....
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
cmd.Connection = con
cmd.CommandText = "INSERT INTO student_info_tbl VALUES('" & txtUserId.Text & "','" & txtFirstName.Text & "','" & txtMiddleName.Text & "','" & txtLastName.Text _
[code].....
Is there any detailed information if Visual Basic uses a run time stack as well as the format of the activation record the stack, return address, parameters, local variables, etc
View 23 RepliesIs there any detailed information if Visual Basic uses a run time stack as well as the format of the activation record the stack, return address, parameters, local variables, etc...
View 1 RepliesI have a javascript file that contains the function for calling the confirmation delete window, the code used is similar to the following:
function Delete()
{
confirm('Delete this user');
[code].....
I got an error when I tried to save a deleted record in a table which I use to store username and password.
I can delete with no problems but the error message popped up when I clicked on the update icon
My login code is like this
Imports System.Data.SqlClient
Public Class Form1
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As
[Code]....
I am new to VB. I was trying to insert a record into access database with data reader. I was getting OVERFLOW error at runtime. My understanding is that overflow error occurs when we assign values that to variables that exceeds the maximum size of the data type.
Following is my code
Private Sub InsertRecord(ByVal CustomerID As Integer)
Dim RowArray() As String = Split(Me.lblRow.Text)
Dim intPrice As Integer
Dim decTotalPrice As Decimal
Dim mySQL As String
[Code] .....
I hav a web service which pull records from a database and I am hosting these services in IIS which works fine but I am trying to retrieve the record and display the record in a listbox displaying the time field as the text for that record.I have created the following function
public sub get_data()
dim dt as new data.dataTable
dim service as ws webservice.webservice
[code]...
I am trying to check a record in database before inerting a new record here is my code but problem is when i enter a names first alphabet it imediatly populate massage. i want to check it after entering whole name
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Try
Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" &
[CODE]...
How do I force users to save the current record (if current record has changed) and not let user go to the next record unless the save button is pressed?
View 5 RepliesI have created multiple dropdown list at runtime and populated with data. I also have added an eventhandler to determine the selected value of the drop down list.
The code is as follows :
Dim tbl As New Table()
tbl.EnableViewState = "true"
[code].....
I have a Visual Basic 2005 program which runs fine if I execute the built Executable. However if I start the application in VS2005 debugger it gives a weird error
[Code]...
While I've previously many years of relational databases and procedural languages, I'm stumbling with Visual Basic. In this problem, the simple situation is that I have two files, parent and child. The primary key of the parent file (Area file) is linked by a relation to one of the two fields that makes up the primary key in the child file (Project file) (unique key is formed from 'area' and 'project'). I have the default table adapters created on both files. I have created two maintenance forms showing one each of the two files in datagrid view format.I can create some records in the Parent (Area) file, but when I try to create a record in the child (Project) file, using one of the valid key values from the Area file, I get the 'ForeignKeyConstraint [relation name] requires the child key values [actual value] to exist in the parent table' which I'm absolutely definitely sure it does.
I haven't done any actual coding for those two maintenance forms, just dragged-and-dropped the files from the data sources screen onto separate forms so it creates the controls itself. But I can't work out, if it already knows the data does exist because I can load it back in to the Area maintence form, why it can't check itself to find out the record does exist. Why does it think the record from the parent record doesn't exist? It does exactly the same thing, whether or not the database is in access or SQL Server Express. I have all the latest updates.