Avoid Deleting When None Selected
Sep 2, 2011My [code]...
But how i avoid when you selected nothing, you can delete.
My [code]...
But how i avoid when you selected nothing, you can delete.
I have the following code which deletes a row after confirmation. As I know a little bit with message boxes, I could not figure it out. Hence if I say 'Yes' or 'No' the selected row is deleted. Please fix the problem.
MsgBox("Do you really want to delete this row ?", MsgBoxStyle.YesNo)
With MyCommand
.Connection = modConnection.MyConnection
[code].....
I want to delete selected column values only... I have this statement: strsql = "delete book1, author1, from book_Load where Book_ID_no = '" & bkIDnum.Text & "'"
With sqlcmd
.CommandText = strsql
.Connection = sqlconn
[code]......
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]...
What 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 want to know that how can I delete selected text in a richtextbox.
View 6 RepliesPlease see Image : [URL] am not supposed to paste external links, but just wanted to share the concept clearly. In the picture, I have department and listbox. Now, I have a Table name - "Company_Data" with the Columns:
Name|Age|Department|Salary
All I want is when I select the department in the drop down, the list should show all the names under the department. Also, when I select the name in the list and click delete. It should delete the complete record from the Table.
I want to let others to delete selected row in the following datagrid view and I have written it like this. Now when I select a row and press the delete button I can remove the selected row
but it will not update the database which meant it will not deleting the above row.
I have bound my datagrid view using databinding.
Private Sub dgvAllInvoices_UserDeletingRow(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewRowCancelEventArgs) Handles dgvAllInvoices.UserDeletingRow
If MessageBox.Show("Do you really want to Delete this Invoice ?", "SD Technology", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.Yes Then
[Code] .....
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 have an ini File which I use as an "index" of jar files. The Jars are declared in it like:
Name of the jar=c:Path
So when my application starts, the ini file gets loaded in a list view. I have a delete button, with which I want to delete the jars from the list view and the ini file. It must be possible to delete multi choiced jar references. so I thought to do it with for each, so that every selected item get searched in the ini and deleted. The Error is, that the String (is correct, I tested it with a messagebox) get analysed - Unknown escape sequence R (The error is between the ** **)
My Code:
Private Sub jarDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles jarDelete.Click
If Me.ListView1.SelectedItems.Count > 0 Then
For Each item As ListViewItem In ListView1.SelectedItems
ListView1.Items.Remove(item)
Dim GanzeZeile As String = ListView1.SelectedItems.ToString
[Code] ......
How can I delete a row from an SQL database based on what item is selected in a listbox?
The listbox is populated by the database, I bound it to the data source.
I tried this code but get an error:vb
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim myCriteria As String = CStr(ListBox1.SelectedItem) Dim deleteStr As String deleteStr = "DELETE customText WHERE userText = 'myCriteria' " End Sub
[Code]...
I have a form with a treeview and a listview. The treeview lists the folders on your system and listview shows the files in the selected folder, similar to windows explorer. I have a delete button for deleting files.
[code]...
When deleting multiple files a confirmation message box pops up for each file selected. I would like to have it come up once and ask 'Are you sure you want to send these 'x' files to the recycle bin?' where 'x' is the number of files selected.
I have a form with a treeview and a listview. The treeview lists the folders on your system and listview shows the files in the selected folder, similar to windows explorer. I have a delete button for deleting files.
Dim i As Integer
For i = 0 To lv1.SelectedItems.Count - 1
Dim csi As CShItem = lv1.SelectedItems(i).Tag
[CODE]...
When deleting multiple files a confirmation message box pops up for each file selected. I would like to have it come up once and ask 'Are you sure you want to send these 'x' files to the recycle bin?' where 'x' is the number of files selected.
I'm creating a BASIC application, and I can't figure out how to save a user selected file (FolderBrowserDialog) to a location selected in another dialog (SaveFileDialog).
View 5 RepliesIs there any way to avoid UnauthorizedAccessException, i get it every time when I try to do this:[code]Is there any way to make that script read-write?
View 10 RepliesUntil asking a question on here I never considered (enums) to be a "bad thing." For those out there that consider them not to be best practice, what are some approachs/patterns for avoiding their use in code?
Edit:
public Enum SomeStatus
Approved = 1
Denied = 2
Pending =3
end Enum
In my Windows Form I have a ComboBox that is filled by a Stored Procedure with a list of names. I have the Combobox set for AutoComplete to "Suggest" and From "ListItems". When a user starts to type in and the AutoComplete does not find any matches in the listitems the user can tab out of the ComboBox and leave what they typed in the combobox even though it is not one of the Valid Items. Is there a way to check the Comboxbox to make sure of of the selected Items has been selected?
View 3 RepliesIs it possible to re-use a DataTable in .net? Here's an example from code-behind:
[Code]...
i have a list of items in a listbox:-
A
B
C
and i have a button that adds these items by selecting them to a datagrid how can i avoid adding A or B or C twice to the datagrid?
I can cheack another instance running r not then i closed the newly created instance
but nw my problem is i need to show the previously running instance if the previous instance minimized or hided
i m using the foolowing code to find the previous instance[code]...
I have following code that is generating random no. between 1 to 10. This is working fine. But, I do not want doubling in combobox (cmbRnd is my combo box). How can I avoid it?
Private Sub cmdRnd_Click(ByVal sender As Object, ByVal e As EventArgs) Handles cmdRnd.Click
Dim random As New Random(), i As Integer = 1
[Code]....
How can I Avoid Duplicate values In datagrideview. IF found dublicate values in will change the row backcolour and show me the rows.
View 1 RepliesI am trying to check whether file exists or not. if not create and write something into it.The file is getting created but not updating and getting error message says it is being used by another processCode snippet:
Public shared sub MyXml()
If Not System.IO.File.Exists("configfile.xml") Then
Dim writer As New System.Xml.XmlTextWriter(fullPath.ToString + "configfile.xml", Nothing)
[code].....
I am doing an activation server which will enable users to activate their software. The problem is that they own the public key.. the verification method needs the public key to check signature of the license file. My concern is that someone could generate their own license file using two key (public and private) and then change the public key on the client which would spoof his current license.
Is there any way of avoiding this ? Where should the public key be stored ? You have to take into consideration that the checkup is done on client and the signature is created on server.
how to avoid rounding off numbers
Code below
Dim acc = 0
Dim i
Dim x() = {699.68, 632.70}
[Code].....
I would like to ask about how to code datetime in CONSOLE vb.net. I already got the format but my problem is after I inputted another data today to the database. In this image,my data retrieval was error. The ID (1,2,3,4,5,6)should be jan 2. Unfortunately, the output was today after Ive put new data to the database. I was confused on how to code to avoid changing the date.
[Code]...
I'm trying to introduce delay to my code so that it would read in the noise or garbage data.
I'm receiving the data from RFID to pic thru RS232.Is there any simple delay that i can use? I seriously don't understand threading.
I have been trying to use sockets in VB.NET and once I cannot understand how to avoid a null reference. [code] I have tried introducing sock as 'New Socket', but this gives me 'Overload resolution failed because no accessible New can accept this number of arguments'.I also cannot simply add '= Nothing' onto the end of my declaration since this still gives a null reference.
View 6 Replies