I have some problem in validating duplicate values while saving & updating my records to SQL database. I have following codes:
1. Decalaration Code
#Region "Declarations"
'Declaration for Navigation
[code]....
I want that when the application exe file is running at that time the database associated with the application shud be closed....Means...I am using the .mdb file.
View 3 RepliesI want that when the application exe file is running at that time the database associated with the application shud be closed....Means...I am using the .mdb file...is there any way that when the application starts, if the user has opened the .mdb file then it shud be closed and also that when the application is running no one shpuld be able to open the .mdb file....
View 5 RepliesHow 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 RepliesI want to insert number for City_Id and City_name , i wrote a query for auto generate number for City_Id,working fine but in the city name i want to avoid inserting duplicate value like if Mumbai is a City ihave already saved then system should not allow that name again. neither in small or in capital or mixed letter.
View 4 Replieswhere I have to try organise a number of databases. Some of these I am sure are duplicate databases.I was wondering if anyone knew if there was a way to interigate the database objects so as to make a comparison between databases (see if they are in fact duplicates.)I would (ideally) like to get a list of all database objects - such as queries, forms, tables,modules etc.. Then look at either the "date modified" or "date created" property so as to see which is the most up to date as well as somparing the contents of the database.I have played with Delphi and dbGo to try see if I can get the info required - but cant seem to get all the properties I need.Here is an example of what I have tried using the "openschema" method such as...
Con2.openschema (siTables, EmptyParam, EmptyParam,DS1);
But afaik - this just returns a list of the objects (in this case tables.)I also tried..
Con2.GetProcedureNames(Listbox1.Items);
But again - theis just returns a list of the database items. I know I have used Delphi here.. But Im sure the principle is the same for VB ?
Here is the error: [URL]
here is my code: what can I do to solve this error
Try
If MessageBox.Show("Save and update database?", _
"Confirmation", MessageBoxButtons.YesNo) = _
[Code]....
Anyone here knows a batch file to create a duplicate database!
View 6 Repliescheck item listview to avoid duplicate item in database. I have 1 listview, my plan the listview checking each item from database before insert to database. and item in listview obtained from opendialog excel this is my code : when items duplicate already exist, my app error/stop at cmd.ExecuteNonQuery() and I'm hopeless to code check each item when reportcode exist in row of 5 or other row
Private Sub BBIUpload_ItemClick(ByVal sender As System.Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs) Handles BBIUpload.ItemClick
Dim iCount As Integer
[Code].....
For some reason my code is executing the INSERT query twice and putting duplicate records in my table. If I put a primary key on one of the fields I get a runtime error and it complains about the fact it can't add the record twice.The part of the code that INSERTs is near the bottom, bolded and italicized. I put the entire IF statement of code incase my logic is wrong.This is what's being executed when a user clicks a button
If listOfCompanies.Contains(cbx_Company.Text) Then
'If the list contains the company, UPDATE the record
If LaborChecked Then
[code].....
how to validate the Duplicate record before Inserting and Updating Command is Trigered from VB.Net Form. I am new to VB.
View 2 RepliesI am sending values from Combobox and Textbox to Access Database in VB.NET.I am phasing the problem when i enter the Duplicate values.In the database one of the column is Indexed.(Yes Duplicates not allow)That column i bind to Textbox("txtperson1").I used the TRY and Catche method to solve the Indexed Problem.when i run the application the value which i enter is not a duplicate that value save on the db. Once i enter the Duplicate value , the message box is showing "The Record alread saved".But After i enter the new value the same message is displaying, it is not saving on the db.
[Code]...
i have wrote a loop to search for duplicate numbers within a column in a database which i have got fine but when i find a duplicate i would like to get the all of the row so if 33 was a duplicate i would like to get the following row.
33MarkWhitesideM12/07/1958Michaeluuu
I have tried to do this buy use something i saw on msnd's website:
Dim foundRow() As Data.DataRow = customerDS.Tables("Details").Select("HNCNO Like '33%'")
However if i change the line to notice the i beside the like
Dim foundRow() As Data.DataRow = customerDS.Tables("Details").Select("HNCNO Like 'i%'")
but i get Index was outside the bounds of the array. Ok i know that means that there is nothing in my array. What i would like is to find the duplicate row associated i. you will probably understand me better when you see the code.
Private Sub checkRowsForDups()
Dim customerDS As DataSet
Dim dupArray As New ArrayList
[Code].....
For some reason my code is executing the INSERT query twice and putting duplicate records in my table. If I put a primary key on one of the fields I get a runtime error and it complains about the fact it can't add the record twice.
The part of the code that INSERTs is near the bottom, bolded and italicized. I put the entire IF statement of code incase my logic is wrong.
This is what's being executed when a user clicks a button
If listOfCompanies.Contains(cbx_Company.Text) Then
'If the list contains the company, UPDATE the record
If LaborChecked Then
[Code].....
Here is my
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=BHgardeners11.mdb;")
cn.Open()
Try
str = "UPDATE Products SET ProductCode = ?, ProductManufacturerCode = ?, ProductsTitle = ?,
[Code] .....
If there is only one item in the database, then this code works. If there is more than one record then the error is produced that it is trying to produce duplicate values. This is down to the Primary key in my database which is the only thing that cannot have duplicate values. However, when I remove the primary key it has the predictable problem that it goes crazy and does weird things.
I 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?
I 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].....
I have created an exe file. i am now worried whether my exe file will be decompiled using some vb.net decompilers.(sample coding) for some exe file named "hello.exe" to prevent the hackers from decompiling it. how to restrict the use of decompiler.i now want to make my code, invisible (or) not traceable (or) not understandable. even if it is decompiled.Also i came to know that , it is also possible to remove the obfuscation from the exe file.. so that the actual goal to trace the code is possible...
View 1 RepliesAlright, simple as can be. I am stuck back doing my project again this year in college since i failed.So my question is if anyone can help me with the coding as to how i can restrict a member from the database, Also i wanna know if i am doing it right in terms of code for Amend.Try to explain it nice and simple.Sorry but unfortunately my college has blocked every single image host so i can't show ya all a screenshot but i can show ya the coding i have.
so far i have it laid out so user can input details of a member.I have 4 buttons on the form, one is Add, Amend, Delete and Cancel.I have the coding right for Add, Delete and Cancel.So i have a checkbox where if a member is restricted the change is placed on checkbox.
[Code]...
I want my textbox to take only letters as Input, no numbers or other keys.
And Viceversa that I want Only numbers as Input ,no letters or other keys.
How to restrict user to do rating only once..i m using AjaxControlToolkit Rating Control i VB.NET!
View 1 RepliesHow can i make it so my listbox can only contain 1 item at a time?
View 1 RepliesI need to create a helpsystem for my work. There's two user types ... common users and admin users. The common user needs to se all stuff except admin stuff - admin must see it all.
I use Camtasia to make screencasts - AVI files, which I need to put in my helpsystem. Seams like I can't stream the AVI from embedded resources, so I guess I need to save the AVI files to the users harddrive.
I need to copy all stuff to the client PC in case of network problems.
how to I prevent common users going to their harddrives and watch admin AVI files?
I need to restict access to a drive using vb.net code
View 3 RepliesI am trying to add Images from websites and I am facing poblem with an issue which is that when I am trying to go to google images and trying to add some Images and when I right click for some images I find "Copy Image URL" and for some I don't find it and I find "Copy link address".Now I want my users to restrict from adding the Images which contain "Copy Image URL"And I am attaching Images so that you'll understand me in a better way.
View 3 RepliesI have some textboxes that I only want numbers in and only want a range of numbers to be valid. Also I do not want to use NUDs. I already have the textboxes connected to functons and subs so I do not really want to change them.How would I do this?
View 8 RepliesI have a picturebox (X=1200,Y=800) and there is an area in the picturebox starting at (X=32,Y=32 and is 256x256 in size). I want to keep the mouse pointer in that area for awhile.
Is there a command in vb that lets you do this? If not, can you restrict the mouse to one control?
[code]...how to restrict numbers for TextBox?
View 6 RepliesI Have Textbox where whatever is entered is to be used for a file name so I do not want certain keys to be entered, i.e. <>|\ /*: ? "
The code I have so far is
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
[code].....
I'm using a webservice to update some data to server.my webservice is written in asp.net and vb.i'm invoking it from a windows application(vb.net) but when my webservice is running it uses the complete bandwidth of my internet connection. is there any way to alllocate a particular bandwidth to this webservice sothat it wont affect other applications using internet?
View 5 Replies
