I have an access database, which I connect it to the form I have text boxes which displays info from the fields in the database. I have created a "Next", and "Previous" button, this is my code
[Code]...
I would like to knwo if someone can tell me how to move into a DDBB based on the following code. It can be on code behind or not.And how to know if a record exist in the DDBB once the user has selected one value from the dropdown list in order to avoid two same values.
<%@ Page Title="Home Page" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="WebApplication1._Default" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent"></asp:Content>
[code]....
In Datagridview, Set as DatagridView1.ReadOnly=True,
Dgv1.Rows.Add()
When i tried to add a Row, it is copying previous Row data to new row,and also blank the previous row, why?Like Insert Row, Why...?
What I want to happen is that the button from my system will remove the previous data from database and then insert new data to database from text file. Im done with inserting new data. The thing is that I dont how to control or where to put the Delete Command from my code.
[Code]...
I have following codes on lostfocus of textbox1.text to search values. It works fine but how to navigate database. I mean what codes should I use for Next Record and Previous Record Buttons. My SQL database name is accounts and table name is employees
str = "select * from employees where sno =" & Val(Me.TextBox1.Text)
dt = GetTable(str)
If (dt.Rows.Count >= 1) Then
Me.TextBox2.Text = dt.Rows(0)("name")
Me.TextBox3.Text = dt.Rows(0)("city")
Me.TextBox4.Text = dt.Rows(0)("phone")
[Code] .....on
I have a program that connects with an access database and displayed the results of a query in a series of textbox which are created at runtime. This all seems to work but the problem is with my next, previous buttons they just dont seem to work now and they did before. There must be some kind of problem with my code.
Code
Private Sub single_record_View_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim strEmployeeDepartmentLocation As String
[Code].....
Im making a 'DVD database'. I need to be able to cycle through entries in the database wit ha next and previous button but for the life of me cannot figure out how to do so.
[Code]...
I am designing programe that diplay student record from database to some asp.net control like Label and Dropdown control and nagigate the record using Next and previous button I want to view One Record at Once at a page Bellow is my Html Page
[Code]...
I want to move my programs and the database to another computer and hard-disks. It looks to me as though I nearly have to re-create the controls and rewrite some of the code to make it so the programs still work after the move. At least with ODBC all I would change was the DSN definitions external to the programs. Is there an easy way to move or rename a database without loads of work?
View 3 RepliesI want the coding for next and previous button and its given on my form. I want to fetch the records from my database and display it on my form.
View 6 RepliesHow do you restore a dataset to the previous state before updating the database with a data adapter? I have a concurrency update problem that I believe to be caused by this. The update fails during the update and a rollback command is issued using a SQLTransaction object. However, now the rowstates of the rows that did not have errors have been changed to unchanged. So this record is no longer availible to be inserted into the database. When I updated the value that could not be null and then test the second update which runs just as the first does then I get a concurrency error. The update code is below:
[Code]...
i want to move through the database searching for data.i know that with vb and access we used movenext movelast, BOF ,EOF that type of thing.now i am using sql and VS2010.
View 3 RepliesI'm using VS2010 with a mdb database. I would like to open a new form and fill it with the last added data in the database. I tried to use the "BindingNavigatorMoveLastItem" from the tooltip toolbar but i can't get this to work.
Is there anyone that can tell me the easy way to move to the last record in the database?
I am trying to ping a list of IP's that reside in a dataset
[code]...
I have two databases, d1.accdb and d1b.accdb (So I have two connectionStrings). In both of these databases there is a table called Postings with exactly the same fields. All i want to be able to do is query the Postings table in d1.accdb for all the records where the users name is xxx. I then want to move all that data to d1b.accdb. I found another thread that was started in like 2007, and tried to follow their instructions, but cant seem to get it to work. Here is the code I am using:
[code]...
When I run getUserPostings(), i get a OleDbException saying invalid argument. Does anyone know how to fix this? or perhaps know another way to do this?Once i get this to work im guessing i would just add "WHERE UserName = 'xxx'" to the end of the OleDbCommand Strings.
A VB.net program reads the queue and calls a stored proc in SQL Server that processes and then inserts the message into another SQL Server table and then deletes the record from the oracle table.
We use a DataReader to read the records from Oracle and then call the stored proc for each of the records. The program seems to be a little slow. The stored procedure itself isn't slow. The SP by itself when called in a loop can process about 2000 records in 20 seconds. But when called from the .Net program, the execution time is about 5 records per second.I have seen that most of the time consumed is in calling the stored procedure and waiting for it to return.[code]...
how to view the next record and previous record in the database.? just like in the picture below.? what condition should we use.?
View 8 RepliesI am currently working in Visual Basic 2010 with a webform. I created an SQL database inside of Visual Basic and I'm trying to make the insert command move values from the textboxes into the database.
[Code]...
I'm faced with a (fun, actually) data mining problem; I have raw ASCII files from instruments, and I want to move that data (~400 GB) into a database, then be able to run various algorithms determining correlations of time series, etc. I would like to write the mining algorithms in Visual Basic (.net, VS 2010 right now), and be able to do visualizations with VB code I have in hand.On the nature of the data: think of a set of several thousand devices, each recording a measurement at a given interval - so I'm talking time-series vectors. It's not more complex than that - though I may have vectors with holes, etc. - not sure what problems of that sort lurk in the data.I spent today re-acquainting myself with VB.NET's interface to (in one case) a Microsoft Access database. What used to be fairly simple - DAO I think it was - involved tables, recordsets, etc (and that would likely be fine). Now I seem to be required to have a weird variety of generally useless objects, e.g. 'adapters', 'datasets', etc. The problem is that I know exactly what I need, and all this extraneous stuff just gets in the way (certainly in coding complexity and opaqueness, and likely in efficiency as well). If any of these mechanisms gave me a kind of virtual access to the entire dataset, and let me control caching parameters, etc.it might be great, but I found nothing along those lines. It seems like useless bloat, though I suppose it must be useful to someone.Anyway, I tried a number of different approaches, and none seemed at all aimed at what I need to do: efficiently do math on a large dataset. I can't believe I'm the first to have this problem, but I can find no useful wisdom out there. I'd be comfortable with pretty much any underlying database mechanism: MySQL, SQL Server, MS Access, but ideally something generally SQL based (I may eventually have to transition this entire system to draw from a client's SQL database, though that's not an overriding concern now). Other than that I want simplicity and efficiency. I thought my old ODBC techniques would work, and to some extent they do, though modifying tables seemed to have bizarre problems (no errors, but not modifications either).
I do have a fairly aggressive deadline to show some algorithm results, so my focus in the short term is to get something reasonable working *in* the short term - in other words, it's less important to me to pick the 'fastest' relational database than it is to pick a database that lets me focus on coding the algorithms, not working through tedious data access coding. If this db could be any smaller, I'd have tried to do it all 'in memory' at least for proving concepts; I don't want to have to learn an entire jargon and approach just to be able to retrieve data points.Perhaps I'll need to bite the bullet and just write something myself, a .dll perhaps just to save and restore large time series vectors. It seems a bit frightening to me that one would have to do this in this age, what with all the database systems out there, but I don't have much time to work through arcane interface logic.
how do i copy and move the entier contents of a directory to another ussing VB.net then also delete the files from there original directory?
View 1 RepliesI have three listboxes in an array and on form_load the listboxes initially select the fifth item in each listbox:
Private Sub frmSample_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For i As Integer = 1 To 3
What does this error mean? I havent modified anything in the designer code, but its giving me an error? WithEvents variable 'Move' conflicts with event 'Move' in the base class 'Control' and should be declared 'Shadows'. The error relates to Friend WithEvents Move As System.Windows.Forms.DataGridViewCheckBoxColumn
View 1 RepliesIm working on my project. and i just asking if i can used this Property in vb. NET [URL] when i install adobe photoshop .. i see on the leff installer...something like a menu and the menu move step by step when the user move between Forms
Welcome
Serial Number
Adobe ID
Install
Finish
How i can create like this in VB .NET
i have two text boxes
1)username
2)Password
i have a little confusion, when we execute the form by entering the username and password it will execute no problem but when we execute for the i want the same username should be written which has been used in the previous execution?
im adding rows to a datagridview and i need to get the valuof the last row in mydatagridviewi have the following code so far:
dim row as new datagridviewrow
If DataGridView2.RowCount > 1 Then
Dim myrow As DataGridViewRow = DataGridView2.Rows(DataGridView2.RowCount - 1)
[code].....
in my page Having 4 Buttons ..(FIRST,PREVIOUS,NEXT,LAST) ..i am confusing to this one..
Actually what i am doing is Iam developing one efrom Designer in this user is adding pages..
so We have given These Buttons (before told)..so user click on First Button page goto Starting page and When click on Next Button Goto Next page ..like this
how to use next & previous button in vb.net to get records from oracle xe code for getting records from database when next is pressed?
View 1 Replieshow to access the previous value of the combobox ( is before changing)
View 3 Repliesim added a dataset inside my project, and inside the dataset i added a DataAdapter with the steps like below:Use SQLStatement --> select A,B from tb_example --> Fill a datatable.And then i bind one of my combobox datasource's display member = Avalue member = BAnd its work properly!After few weeks, im reopen the project and i try to add another new dataadapter in the previous dataset and a new combobox like steps i did before. When i come to the combobox and try to find the datasource in combobox's properties and i cant find the dataadapter i jz added.
View 7 RepliesI'm trying to get thee previous page visited in ASP.NET using VB.NET using the following code:
Partial Class _Default Inherits Page
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
Dim previousPage As String = Page.Request.UrlReferrer.ToString
If (Request.UrlReferrer <> Nothing) Then
[code].....
I get this error:
Object reference not set to an instance of an object.
at:
Dim previousPage As String = Page.Request.UrlReferrer.ToString
What I want to do is get the previous page visited so I can get a session variable.
