Avoid Duplicate Value In Datgrideview?
Nov 11, 2010How can I Avoid Duplicate values In datagrideview. IF found dublicate values in will change the row backcolour and show me the rows.
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Avoid Duplicate Listview Groups?
Nov 25, 2010on button.click event,Dim category As New ListViewGroup(cbType.Text) If Listview.Groups.Contains(category) Then Arggh! this should work. Listview.Items.Add(lvi).Group = category
Else
Listview.Groups.Add(category)
Listview.Items.Add(lvi).Group = category
End If
If cbType.Text was "Dog", it will add another "dog" group header every time I add an item having selected dog, when I want to add the item to the existing dog group.
Avoid Duplicate Records Because Of Timer?
Nov 10, 2011I'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 RepliesAvoid The Duplicate Values In The DataBase?
Jan 29, 2011How can i avoid the duplicate values in the Access Database?? I am working in VB.NET, to create DataEntry Form. I have Combobox. When enter the value on Combobox and press OK button then the value should check on the database , if the value is not there then it should save on the db. else the Missage will give "It is Saved".
View 6 RepliesAvoid Duplicate Values In Datagride View?
Nov 7, 2010How can I avoid Duplicate values in Datagrideview. When I am putting Product Id in Invoice which is adding in datagrideview if it is exist in datagrideview it will Highlight with deferent color and give me massage that this Id is existent in datagrideview
View 4 RepliesVS 2010 ListView - How To Avoid Duplicate Rows
Sep 22, 2009I am populating the list view using mysql and i dont know how to avoid duplicate rows.
Private Sub Btnrefresh_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnrefresh.Click
Using connection As New MySqlConnection(";")
Using command As New MySqlCommand("SELECT Distinct name, type, uploaded, uploader, location FROM programs", connection)
connection.Open()
[Code] .....
String Search Listbox Entries To Avoid Duplicate Entries In VB 2008?
Nov 29, 2009I have a program where you have three entries, CD name, artist, price and it goes into a listbox and .txt file when closing. I have to have a message box if you enter the same CD name. I have a code to open the .txt file and compare strings but I need to change it to compare only the CD name and not all three entries. Is there a way to do my string compare against my listbox without opening the .txt file?? The program loads the listbox from the .txt file when opening. Private Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click' adds CD information to the list box
' declare variables
Dim strName As String
Dim strArtist As String
Dim strPrice As String
[code].....
Aviod Dublicate Value In Datgrideview
Mar 6, 2011[code]...
When I start the program, the program uses about 10k Memory. When I call Sub One, the program goes up to 800k Memory (roughly the size of the file). Why doesn't the memory usage go back to 10k when I call Sub Two?
Count The Duplicate And Show The Most Duplicate?
Mar 17, 2011I have this data in txt file and the data keeps changing all the time.
[code]...
I would like to read all lines and compare, if the same name and same address is found, which is in the [......], then i need to count it and show the most frequent buyer!should i read it all and put in array, and compare and put the duplicate data and count into another array?
Remove Duplicate Items But Leave At Least One Of The Duplicate Items In The List?
Mar 27, 2012I have a List object and I want to remove the duplicated items but leaving at least one of the duplicated items in the list;I wrote something like this however I would optimize this code for better performance, is there something faster?
Const chars As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
Dim rnd As New Random()
Dim mylist As List(Of String) = Enumerable.Range(1, 100).Select(Function(i)
[code].....
Any Way To Avoid UnauthorizedAccessException
Jan 21, 2010Is 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 RepliesC# - How To Avoid Using Enums
Feb 15, 2010Until 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
Asp.net - Re-use An Ado.net Datatable So As To Avoid Re-querying?
Jun 11, 2011Is it possible to re-use a DataTable in .net? Here's an example from code-behind:
[Code]...
Avoid Adding A Or B Or C Twice To The Datagrid?
May 13, 2009i 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?
Avoid Another Instance Of Application?
Jan 14, 2010I 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]...
Avoid Deleting When None Selected
Sep 2, 2011My [code]...
But how i avoid when you selected nothing, you can delete.
Avoid Doubling In Combobox?
Aug 10, 2010I 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]....
Avoid File Is Being Used By Another Process?
May 27, 2011I 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].....
Avoid Public Key Spoofing?
Aug 26, 2011I 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.
Avoid Rounding Off Numbers?
Apr 20, 2011how to avoid rounding off numbers
Code below
Dim acc = 0
Dim i
Dim x() = {699.68, 632.70}
[Code].....
Avoid The Changing The Date?
Jan 3, 2012I 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]...
Delay To Avoid Garbage?
Jun 15, 2009I'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.
How To Avoid A Null Reference
Jan 8, 2011I 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 RepliesHow To Avoid Blank Lines
Sep 21, 2010i have coded as below but once the record deleted and when the application write to text file again it gives an error says index was outside the bounds of the array any solution?
Dim stream As New IO.StreamWriter("C:Documents and SettingsAdministratorDesktopBill PaymentBillPaymentRecords.txt", False)
stream.WriteLine("")
stream.Close()
How To Avoid If ... Else And Switch Cases
Aug 3, 2010I have been programming for alot of time. Generally i program in some languages like PHP, ASP.net, Java, JavaScript and others. In all languages i have to use alot of if else statments . Like if value= 10 then ... if i review my code then i find alot of if conditions. So i would like to minimise them but how not sure. one point was using classes somewhat minimised but still they are more... like task, cat, sec and type:
[Code]...
How To Avoid Loops In Networks
Aug 14, 2010I have a matrix for example (10 x 10) which represents 10 nodes. The matrix called MyMat(9,9) The rows of this matrix represent the source node (From Node) and the columns represents target node (To Node). It has 14 links which are randomly distributed. The non zero values represent the connections between nodes.
[Code]...
How To Avoid Overlapping Of PictureBoxes
Jun 13, 2012I am making an application in which number of pictureboxes created at runtime but they do not overlap to each other. I wrote a code bt its only for two pictureboxes.How can i do that for number of pictureboxes..
Public Class Form1
Dim pic1, pic2 As Rectangle
Dim drag, iscollided As Boolean
Dim mousex, mousey As Integer
Private Sub pic_Mousemove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
[Code] .....
How To Avoid Radiobutton To Autoselect
May 14, 2009I need the user to choose one on a group of RadioButton controls. The problem is that on form load, one RadioButton is automatically selected. I does not want one selected, unless the user checks it, but cannot find how to disable automatic selection.
View 2 RepliesIDE :: Avoid Open A Project Twice?
Dec 1, 2009it happened to me a lot - i double click a solution file and open it - change it and find out that its openned twice on my computer. IN VB6 - you could not open the same vbp twice - how can I do that in vb.net 2005/2008
View 3 RepliesJquery - Avoid Refreshing A Div If The Div Has Been Used?
Jul 29, 2011i have a div inside a iframe. It will be refreshing very 10 seconds.the div place holder has 4 text boxes controls. if any of the textbox is used then i want to not to refresh the div.
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