I've been working on a program lately. On the form load it loads a list box with a list of names from a .txt file. It's a sign in form, so when people click their name then the button it will write to a .txt file their arrival time, and the folder is their name. I can make it do it one at a time, but that's so inconvenient. I have the list box set so it accepts multiple selections, but I need to make it write the time for everyone.
how to delete the selected name from the list that would be extremely helpful, that way the person isn't signed in multiple times.
I have a list box which displayed the var_field from the database. when the user select a data from the list box and press delete the data should be delted fromt he l;ist box and the row from the database. Im using the following code. but it shows some error called "Object reference not set to an instance of an object."
Private Sub Deletebutton_Fielddetails_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Deletebutton_Fielddetails.Click Dim form As New Fielddetails()
I have a datagrid being filled by the data adapater connected to my database.I have a delete button on the form, i cant figure out how to delete the selected row on the datagrid when the delete button is clicked.
Another program I am working on for fun, I am basically shuffling a list inside a listbox, what I want to do is delete the rest but not sure how to go through with that. At the moment I have this: [code] Just contains the code, declarations outside weren't included.So anyway, once clicked, it will call on the function to basically shuffle in a for loop, I was wondering if I should (or how should) create another function and call it in the click button or have just a loop in the click button so it deletes half the list. What I am doing is I have 20 list of items, I want the program to shuffle the items and then deleting the lower 10, meaning, if I had 10 items and wanted 5 top, I'd want: 0, 1, 2, 3, 4 and deleting 5, 6, 7, 8, 9.
This program is supposed to allow the user to check items in a checked list box. If the item is checked, it goes into the Completed List Box on the right. The program then adds the unchecked items to the Pending list box on the left. I keep getting placement values (e.g. O,1,2) instead of the strings (e.g. "Key Returned") in the list box results (see photo attached)
Public Class frmCheckOut Dim i As Integer Dim cleaning As String = "Cleaning Inspection" Dim damage As String = "Damage Repaired"
I have a problem with the GridView: after I selected the value that I should void, it should be deleted on the GridView. I use this code dtable.Rows.RemoveAt(i) but it's not working.
I have a data which is saved in textfile. when form load the data in text file will be load in datagridview. i want delete the selected row from the datagridview. I used this coding to delete.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim row As Integer
I have a data which is saved in textfile. when form load the data in text file will be load in datagridview. i want delete the selected row from the datagridview. I used this coding to delete.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim row As Integer
[Code]....
"Rows cannot be programmatically removed unless the datagridview is data-bound to an IBindingList that support change notification and allows deletion."
I dont understand what is this error and how to solve this?
I have a data which is saved in textfile. when form load the data in text file will be load in datagridview. i want delete the selected row from the datagridview. I used this coding to delete.Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim row As Integer Public selRow As New DataGridViewRow Dim index As Integer index = DataGridView1.SelectedRows.Item(0).Index selRow = DataGridView1.Rows.Item(index) DataGridView1.Rows.Remove(selRow) row = row - 1 End Sub
When i exucute this code it shows me error "Rows cannot be programmatically removed unless the datagridview is data-bound to an IBindingList that support change notification and allows deletion."I dont understand what is this error and how to solve this?
So i'm steadily learning more about table adapters and SQL commands. One of the latest things i'm trying to figure out is how to correctly delete a datagridview row and have it update the database when no Pkey is set on the database. I'm sure i'm missing something simple, all i've managed to do so far is delete everything Obviously when no pkey is set the table adapter wizard doesn't generate the delete statement.
I am learning vb.net from tutorial sites, book and having trouble to delete row from datagrid view. can someone help me how to delete a selected row in datagrid on click of a button .[code]...
I have the below code that works great, until you have multiples of the same thing.example of data
burger -tomato +tomato[code].....
if i select the +tomato in wrap it remmoves the +tomato in burger (deleting the 1st oocurance of it) how can i fix that. i have played alot and can not figure it out.(ps the other list boxes are other data but it needs to remove the same "line" as each other. they are all changed to the same selected index when 1 is changed)
Dim value As String Dim value1 As String Dim value2 As object[code].....
I have a datagridview that is bound to a dataset. I would like to allow the user to select multiple rows and then, when a button is clicked, delete them. I need to populate a second dataset which contains the deleted rows, to pass back to the db. Here's the code I have so far:
I am coding a simple database that uses a .txt file as a way to store infomation (It is required to use an external file and .txt was the first one that comes to mind), my question was. Is there a way to click on data in a list box and then delete it from both the listbox and the .txt file?
I use this code.. it work to delete my sql data but it delete all the data. I just want to delete the selected record. I also have try the others code but the code not delete from my dataset. Just this code that I've try and delete from my database but the problem is it delete all the record..
Dim con As New SqlConnection Dim CM As New SqlCommand Try con.ConnectionString = "Database=ITtry;" & "Data Source=SLSDB\SLSREP;" & "Uid=sa;Password=***" con.Open() [Code] .....
I have a databse program that is using 3 comboboxes all pulling same data from a dataadapter. I would like it if after a selection is made in one combobox it no longer becomes available in the other 2?
i have a problem with deleting certain information on my datagrid [Code] and this clears my whole grid, but i want it to delete only the selected row, what would the code be?
I try to do a very simple job which is: Delete a row in dgv AND database! But now after three days I'm running out of steam
The problem is: I select on or more rows in dgv and push the del button. The sub zDelete starts working and at the end the selected row is gone and the row after my selection is gone too!?!? The deletion of the selected row was well done in dgv and database. But why is the next row in dgv only also disappeared??? After a restart of the form the missing row is back up again. And when I try to delete the last row it trows an exception error: System.IndexOutOfRangeException was unhandled
The code fragment is this:
'Delete all selected rows in dgv AND database! Private Sub zDelete() If MessageBox.Show("Do you really want to delete the selected rows?", "Delete", MessageBoxButtons.YesNo) = DialogResult.Yes Then
I am using Visual Basic 2008.I Have a lilstview with items from an MS Access database loading in to it. I can update, insert and delete all from the database and the listview is updated accordingly. However, I cannnot for the life of me get it to remove a row from the database based on the selected index of the listview!!!I suppose I could use a DataGridView but then I would need to add a datasource wouldn't I?
i have a remove button like i would like to delete just sigle selected row from both datagridview and the acutual database.the problem I am having is in deleting selected row.if i dont use the parameter the contents of the table gets deleted ,i dont have any primery key just an ID field (AutoNumber).
How do i delete a row from datagridview and datasource that is populated by a class file?dding of item goes like this, but not not sure how to delete the item.
Dim dt As DvdEzyDataSet.DVDCopyDataTable = DvdCopyDB.getDvdCopyByID(CInt(txtCopyID.Text)) Dim dr As DvdEzyDataSet.DVDCopyRow = dt.Rows(0) Dim dt1 As DvdEzyDataSet.DVDDataTable = DvdDB.getDvdByID(CInt(dr.FK_dvdID))
