I have a form with a listbox bound to a tableadapter. Users can select from a combox, that has a list of users in it, then click "Add" to add it to the listbox and remove to remove it. This part works fine. The problem comes when updating the database:
[Code]...
I am trying to delete rows of an .sdf file using the Database Explorer utility of Visual Basic. When doing so, I get the following error message:No rows were deleted.
A problem occurred attempting to delete row 1.
Error Source: Microsoft.VisualStudio.DataTools. Error Message: The row value(s) updated or deleted either do not make the row unique or they alter multiple rows(48 rows). Correct the errors and attempt to delete the row again or press ESC to cancel the change(s). It is correct that the data in the rows are not unique (and not supposed to be; there is no "error" to correct), but why should this prevent deleting them?
I have an Access table in which I connect through ODBC commands. I want to delete the 50% of data rows from it. Can anyone knows a string to write for doing that? ALARMLOG is my table. In MS SQL I tryed succesfully the following command :
[Code]...
I've been working on a little sidebar project for fun about a casino. It may have a couple of card games like, war and eventually 5 card draw. I haven't begun any card programming yet because I'm on a screen that shows players.
View 2 RepliesI have been trying my hand at this for some days now and just cant get anything to work. Below is the code im currently using to delete a row from a database table, the problem when trying to build the project line 5 is giving this error about the value con" Value of type String cannot be converted to 'System.Data.OleDb.OleDbConnection' "
Dim con As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=Customers.mdb"
Dim cnn As New OleDb.OleDbConnection(con)
cnn.Open()
[CODE]...
I have also tried using this code below, but to no success. Im basically just looking for something rock soild that i can use to accomplish this task. Been stuck on this for quite a while now.
CustDetailsTableAdapter1.Connection.Open()
Me.CustDetailsTableAdapter1.Delete(txtDelCustN.Text, txtDelCustSname.Text, txtDelCustTel.Text, txtDelCustAddr.Text)
CustDetailsTableAdapter1.Connection.Close()
I have the following controls:
[Code]....
I have a table on a MYSQL database called "messages" and a column called "message". When i type something into textbox1 and click button1 i want to add a row to "messages" under the column "message" with the title and message as its value.(separated by a hyphen, dash, or other small delimiter)Then reload listbox1's contents to show the new message. so i want the final message to be something like:
[Code]....
I have a table in where I am trying to delete all the rows except for the first. I did manage to come up with the code following:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim dtRemoveRows As DataTable =
[Code]....
In review, this code sort of holds the first row and clears the remaining rows. However, when I exit and reopen the program the rows return. So in other words, I want the rows to get permently deleted. I have searched and cannot find a solution to permenly delete all rows without deleting the first row.
I have the following xml file output below where Deleteme="true" is written when the user clicks on the row's checkbox. I was thinking that once the data is flagged this way I could read the data back in, somehow delete each row specified as above, and then save the data back out.
[Code]...
I have a form with multiple tables. when I add rors into the tables I Use code like this:
Dim n As Integer = 0
For Each copyRows1 In copyRows
Dim newOrdreRow As DataRow = Kalkyle1DataSet.Tables("Ordre").NewRow()
Dim Ordredato As String = Kalkyle1DataSet.Tables("Ordre").Rows(n).Item("Ordedato")
where I add new rows also addin a OrdreID as Foreign Key.
How do I Delete all records in the tabel with the foreign key = * ?
* = a number I choose
how to delete all rows from a table in visual basic 2010
Dim CurMembersRow As MembersDataSet.MembersRow
CurMembersRow = CType(CType(Me.MembersBindingSource.Current, DataRowView).Row, MembersDataSet.MembersRow)
This is such a basic question, I'm almost embarassed to ask it. How do I loop through seleted rows in a DataGridView and remove the rows?I've tried this, but it doesn't work. After one row is removed, the index is all screwed up.
[Code]...
So I've created a gridview with checkboxes so the user can check as many fields as they want and delete them with the click of a button. It works except that it deletes all selected rows except one, the row with the lowest number. I can't firgure out what logic error is causing this.
Here's the code for the delete button procedure:
Protected
Sub btnDelete_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Dim count As Integer = 0
[Code]....
I bring data in from an access database using a sql query and then assign the data to a datagrid view. When i try to delete data from the table, it is removed from the datagrid, but the change is not showing up in the actual table.As a second question, is there a way to tag the specific row and send that back to the actual database for deletion? The way i have it set now, i think would delete all instances where digit, day, and office match, instead of just the selected record.
View 3 RepliesHow would I delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If I dont delete the successful rows then I will have multiple inserts of the same dataRow and we dont want that! And if I don't move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. You can better see what logic I am trying to perform at the bottom of my code, right after I insert into the database.
Here is my code.
Private Sub btnLaserGenerateTicket_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLaserGenerateTicket.Click
'Function declarations
'Object declarations
Dim localOutputServer As SQLServer = Nothing
'Variable declarations (Form)
[Code] .....
"Deleting rows from multiple tables in SQL 2005". I need to delete all the rows in the multiple rows where it's the same UserId. My Delete command below:
Delete From tableA
From tableA INNER JOIN
tableB ON tableA.UserId = tableB.UserId INNER JOIN
tableC ON tableA.UserId = tableC.UserId INNER JOIN
tableD ON tableA.UserId = tableD.UserId
Where (tableA.UserId = @UserId) AND (tableB.UserId = @UserId) AND (tableC.UserId = @UserId) AND (tableD.UserId = @UserId)
What is happening from the above query is only the rows from tableA is getting deleted.
Here's my code. It gaves me an IndexOutOfRange exception. What's wrong with it?
[Code]...
With a DataGridView bound to a bindingsource, which is filled by da.fill(ds) . How do I go about deleting selected rows when the UserDeletingRow event is fired? I've used the following code in the event:
Dim dsEmplTran As New DataSet
daEmplTran.Fill(dsEmplTran)
dsEmplTran.Tables(0).Rows(dgvEmplTran.SelectedRows(0).Index).Delete()
Dim cb As New SqlCommandBuilder(daEmplTran)
[Code].....
I'm almost embarassed to ask it. How do I loop through seleted rows in a DataGridView and remove the rows?[code]
View 2 Repliesi've been all over the internet to solve this problem, but i've found no solution to my problem.my concept is this.Based on selected value within a combo box, the datagridview will populate with values from the database.
[Code]...
i am working on my first database program. i believe that I am almost finished, except that i have a remove button like i would like to remove just a single selected row both from the datagridview and the actual database. this is just in case any information is entered wrong, and also to delete all the entries i put in just for testing purposes. the only problem im having is in updating the database after removing the row from the datagridview
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RButton1.Click
If Not DataGridView1.CurrentRow.IsNewRow Then
[code].....
So I have a program that allows the user to load up some images, which appear in a ListBox. You can click the imported images and they load into a PictureBox. [code]The path is not of a legal form.You can load up the code and see for yourself. Now I need to be able to delete these images from the ListBox. The exception occurs because the image is now null, and can't load.
View 6 RepliesI have been working on software that finds a specific backup file type and lists it in a list box. Then the user selects the files he/she wants to delete. Then clicks the delete button to remove the files.I have everything finished and working excpet for deleting the actual file. I figured out the code to delete the actual list item... but I cannot figure out how to get the selected file to be deleted within its directory as well... been at it for 4 hours now.
View 4 Repliesmy code
For i = ListBox1.Items.Count - 1 To 0 Step -1
If ListBox1.SelectedIndex = True Then
ListBox1.Items.RemoveAt(i)
[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 RepliesWhat im trying to do is display my details in a listbox then the one that is selected frm the listbox is displayed in the textboxes and when delete button is clicked it is flagged at deleted??? This is what should happen!!:@
I kow there is definitely a problem with this piece of code im setting the index and length to constant numbers so if a different name is clicked it does not work!! is there another way to set this to allow for any length or index position??
CustomerIDTextBox.Text = DisplayCustomersListBox.Text.Substring(0, 4)
SurnameTextBox.Text = DisplayCustomersListBox.Text.Substring(5, 7)
ForenameTextBox.Text = DisplayCustomersListBox.Text.Substring(12, 10)
[Code].....
I'm writing a email program and i need to make it so that when I delete a item from a listbox it also deletes from a text file. Right now all it does is delete it from the listbox and when the program is reloaded its still there.
Dim arrEmailSelect As New List(Of Integer)
Dim fileContents As String
Dim thisEmail As New email
[Code]....
I'm trying to delete an item from a listbox so that it wouldn't appear when i run the program again. Is there anyway you could do this.
View 14 Repliesbasically i had this problem before which i fixed with this code!
'REMOVE TIME
If ListBox1.SelectedIndex <> -1 Then
Dim Box As MsgBoxResult = MsgBox("Are you sure you want to remove this time?", MsgBoxStyle.YesNo)
[Code]....
It worked perfectly, all ive done to my code since is change the way the listboc is loaded / saved, it now comes from a .txt in My Documents rather than the C drive.
It now only deleted the top value of the group selected int he listbox and not all of them as it did before.
I am trying to delete an item from a text file based on if an item appears in a listbox but keep getting an error " Index was out of range. Must be non-negative and less than the size of the collection." The line it is returning the error on is the the first IF statement of the below text.
Code:
Dim Lines As new List(Of String) (IO.File.ReadAllLines("Carl.txt"))
For i As Integer = 0 To Lines.Count -1
If Lines(i).Contains (listBox1.text) Then
Lines.RemoveAt(i)
End If
Next
IO.File.WriteAllLines("carl.txt", Lines.ToArray)
End If
I have made an employee list and linked it to an Access database. The initial problem I was having is that in my program I had to link their ID's and names so if you click on an employee in the listbox, his or her's ID would automatically display in the textbox below. Since I did not know how to do so, I decided to make an array and store the ID and names separately while the listbox is being compiled. And so, the form became linked and adding became easy to code.But my problem came in deleting an employee. When deleting the name should be removed from the list, but this is where the order of the arrays messed me up. How do you maintain the order of the array? Here is the code I used. I dimmed 'count' as an integer and it is responsible for keeping that order.[code]You will see Staff_CodeTextBoxes etc. and info_Staff_CodeTextBoxes. etc.These text boxes (not visible to the user) are responsible for holding the data while the array takes the data from it, or adds it's own data to it.
View 4 Replies