I am trying to update a row or a single cell in ms access through vb.net. But when i update the text box named NRIC, say for example i want to update "s4522147B" to "tr4521856C" and mean while leaving the other fields the same.
But the thing is when i make the changes in nric.text (textbox), the dataset actually updates the whole column in the table instead of the selected textbox.
I am using MS Access Database. Now I have to update a particular cell value. Here is my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim str As String Dim Presc As New System.Text.StringBuilder Dim prs As String(), j As Integer
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This code updates all the cells in that column. I want to update only the particular cell having Case_ID = str Where I have to add the WHERE clause (WHERE Case_ID = " & str & "
I have a project in VB2010 it is well connected to the database (DB.accdb) access2007. I'm trying to save the photo into the database table using Binary method. I am successfully able to (Save, Search). my problem is in the EDIT button : I'm supposed to search first to return\display the info+Photo on the form controls (Textbox + PictureBox), now i want to do EDIT, i use sql string : SqlStr = "Update MyTable Set Field1 = '" & Text1.Text & "', PhotoOle = [b]????[/b]"
I'm not able to convert the PictureBox That contains the returned photo to Byes() using : ImageBytes = Ctype(PictureBox1.Image, Byte()) .... not working . -Or- ImageBytes = Ctype(DaraRead!PhotoOle, Byte()) .... not working either.
I need to dynamicly write some VB.net code to change the colors of different cells in a TableLayoutPanel based on specific criteria. I have search for VB code to perform this but am unable to find any. I have found some C code that does it but I am unfamiliar with C. Is there anyone on this forum that can translate this into VB.net code, please? I am using VS 2010.[code]...
I have a datagridview with data in it, i have set it so you can only select the row and one at a time.However, i need to get the data from one of the cells in the selected row, i have tried this
Novice VB user, trying to create a pop up msgbox upon opening a file, whereby the user selects from a list (of available options), the choice then gets entered directly into a cell reference. I have seen this before and know that it's primitive programming but i'm still a learner.
I have a LINQ query that groups and counts on a single dgv cell. What I want to do is group and count on 2 dgv cells. So I modified my existing query by adding a SELECT statement highlighted :
CODE:
But I am getting an error on the second select variable stating: Range variable 'Value' is already declared
What I have read shows that I can select more than one variable.
I'm trying to get a single value from my table in a database. They are all given a unique id when stored. Here is the code I use to put the in:
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That was so you could get an idea of what I was looking for, I'm not looking for sql statements, I don't know how to use them. Just keep in mind, this is all vb.net/asp.net.
Looking for the simplest way to get a single value from a database. This gets confusing when you consider all of the 9,000 ways that exist to do this in a .NET language. SqlCommands, DataReaders, Recordsets... Assume I already have a connection to the DB opened. I simply want to do something like this: Dim age As Integer = <SQL statement here>
I am attempting to copy the value of the TimeStamp in cell A6 which has the NOW() formula into cell A5 Based on a change in Cell A4. The catch is I don't want it to update every time the sheet is recalculated due to updating links in other cells on the sheet. ONLY when Cell A4 Changes. What do I do?
In my contact manager program I have been storing information by reading and writing comma delimited files for each individual contact, and storing notes in a file for each note, and I'm wondering how I could go about shrinking them all into one file effectively. I have attempted using data entry tools in the visual studio toolbox and template class, though I have never quite figured out how to use them. What would be especially convenient is if I could store data as data type IOwner (a class I created) as opposed to strings.
I'd also need to figure out how to tell the program what to do when a file is opened (I've noticed in the properties how to associate a file type with the program though am not sure how to tell it what to do when it's opened).
Edit:
How about rephrasing the question: I have a class IContact with various properties some of them being lists of other class objects. I have a public list of IContact. Can I write Contacts as List(Of IContact) to a file as opposed to a bunch of strings?
Second part of the question: I have associated .cms files with my program. But if a user opens the file, what code should the program run through in an attempt to deal with the file? This file is going to contain data that the program needs to read, how do I tell it to read a file when the program is opened vicariously because the file was opened?
with editing a single field of a database. variable dS is my dataset variable in which i have filled with the tables of my database. since its my first time in database management with vb.net
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click If txtPOno.Text = "" Or txtDate.Text = "" Or txtSuppCode.Text = "" Or rBOM < 0 Or
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inorder to pass. honestly, i really think that im using a BRUTE FORCE method.
I am trying to read a single result from an SQL table. I tested my query in MySQL Query Browser and it returns a result of USER_ID=4. My query: SELECT USER_ID FROM aaalogin where NAME = 'administrator' I believe my error is due to some "double quoting". I have a "txtUsername" textbox on my login form. I want to inject the typed entry from this textbox into my SQL QUERY. Notice the end of this line, I have tried tons of combinations, nothing works. myCommand.CommandText = "SELECT USER_ID FROM aaalogin where NAME = " & " ' txtUsername.Text ' " The result is ALWAYS "0" though, which is useless to me.
Full code below: Imports MySql.Data.MySqlClient Imports System.Data Public Class frmLogin Private Sub cmdCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdCancel.Click Application.Exit() [Code] .....
I'm using an access database in a program that I'm making for my school, the user is able to select an item from the menu, then it sends it to a list box, there is also a textbox to put a quantity of how much of the item you want. I have a field in my database called Amout Ordered, I want to update it with the amount of each item ordered, and I can't figure out how.
I have an application which takes input on a local machine and sends it to a database stored on a server. I'd like to be able to deploy my application over a number of computers (all on the same network), all of them updating the same database (on the network server).First of all, will this be possible without putting together a completely new application to handle all connections to the database and sorting the entries?
I am using help of SqlServer.Management.Smo to rename an attached MS-SQL database.
Dim db As New Database = ActiveSQLServer.Databases(OLD_NAME) db.ExecuteNonQuery("ALTER DATABASE " & OLD_NAME & " SET SINGLE_USER WITH ROLLBACK IMMEDIATE") db.ExecuteNonQuery("ALTER DATABASE " & OLD_NAME & " MODIFY NAME = " & NEW_NAME)
The problem is that after renaming the database is set as a Single User.So what am i doing wrong?
im having problems trying to work out the code i need to add to a value i already have in a cell in my database, for example if the cell contains the value 3, and input 10 to my textbox, then i want the cell to contain the value 13. at present what i input to the textbox only inputs that value rather than updating it. i would be appreciate any help as i'm a student and i'm new to using VB with databases!!
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click accCom.Connection = accConn
