I'm using an Access Database and want to do something that I didnt think would be that big of a deal...I'm trying to take update a database with a value given by the user. I am having no luck with this...basically all I'm interesting in doing is having a user choose a value and then hit an update database button that adds that value to its corresponding value in the database...This is for an inventory program..
View 5 RepliesI am making a application that has the ability to edit values on a access database table. As a simple example, My table looks something like this:
Order Number Completed
2000 No
2001 No
2002 No
The application needs to edit the Completed columns. I have 1 text box, and 1 button in my form. You enter the Oder Number in the textbox and press the button. The VB application then needs to change the Completed to Yes in the database. Example, I type in 2002 in the textbox and press a button. The application changes Completed to Yes for this order number in the access database and saves/updates the database.
I'm trying to update some records in my table using the GridView Item templates. It's like this:
<asp:GridView ID="grdCursos" runat="server" CssClass="grdTable"
AutoGenerateColumns="False" DataKeyNames="CourseID">
<Columns>
[Code].....
I am editing BINary file and i need to parse some values from it without corruption of file, unfortunately I was try everything, but I dont know how to parse it on the byte level. I know how to read, write, search bytes from files but not how to parse it.
View 1 RepliesHow do to Read values in DataGrid When user is editng the Cell
for Example:
Me.Text = Dgv.CurrentRow.Cells(6).Value
What im trying to achieve is editing the value of this key; But I've tried everything i can think of.. I've tried just entering the name and type etc. but nothing..I've decalred:
Imports Microsoft.Win32
and the code im attempting to use:
Dim regKey As RegistryKey
[code]....
What i want it to do is create a key from the Drive Selection box i.e. 'H' then create two sub keys called 'DefaultIcon' and 'DefaultLabel' and assign values to their (Default) key but its not working.
I am building VB.NET application that takes data from text files that are exported from a legacy DOS program. These are written to a datatable and displayed in a datagridview. Right now my code simply loops through the datagridview and inserts the data into the database (SQL Server). There is a requirement now that the client number must be checked before the insert to see if it exists in the database. If it does, then the value of one field (tax rate) is checked against the value of the field in the datagridview. If there is a difference, then the rate is to be updated in the database and the data that was in the database is to be written to a history table for audit purposes. If the client number is not there, then we are to do the insert (which is already written). I want to know what is the most elegant and efficient solution for this problem.
I need to compare what is in the database table with what is in the datagridview, update the history table for records that exist, and then insert new records.
I have a application with Access Database.
Open/Edit/Delete is through below code
Public conn As New OleDb.OleDbConnection
Public da As OleDb.OleDbDataAdapter
[code]....
I am displaying this data in a datagrid by connecting datasource and datamember.What i need is to displat a dropdown on second column in the datagrid. When i change the data it should update the database PBL (Visual Studio 2010 Ultimate)
I have a problem with the database and the DataGridView. After editing the attributes of the database you can not see changes in the DataGridView. If you connect the DataGridView through code connection is correct. What could be the reason? What could be the fault of pliu nmd_piDataSet?
(When I plug the same database under a different name everything works as it should.) I have a table with about 20 columns and I can easily edit szeroość, view columns, using the code is problematic and not so intuitive. [Code]
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
[Code].....
inorder to pass. honestly, i really think that im using a BRUTE FORCE method.
I am trying updating a record. It seems like I did all the right things but I can't seem to update my database. I'm not sure if my update button is functioning as it should be.
Private Sub UpdateButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles UpdateButton1.Click
Dim cb As New OleDb.OleDbCommandBuilder(da5)
While count5 < MaxRecords5
cells5 = 0
[Code] .....
Whenever I edit the datagrid, and press update, it doesn't really update the database.
well this may be a simple question to some but for me, im not even sure where to start. I have never done a program in VB.NET yet that uses a MySQL database. So this should be a fun thing to learn. I looked at an example for access databases and it seemed pretty straight forward. But I must use MySQL as the database is on a Linux server in Ohio.
What I got so far is how to connect to the database using ADODB. Here the example I'm giving. You got 4 col's call AccountNum (primary key), Phone, Name, and Address. For each row is data of a client. What I'm trying to do: the program asks for the account number. You type in the account number of the client. It then
compares it to the rows of AccountNum col till it finds a row with it. Then it asks if you'd like to change the phone number or address.
So what I'm looking for is the, how to call rows and change data in col's.
How do I Update my database when I edit in a DataGriedView?
View 11 RepliesI know this sounds simple to the majority of the database gurus out there but I am finding it difficult to find anything related.I am using Visual Studio 2008 VB.net winforms application.I have a form which contains a datagridview. what I want to do by push of a button is set the field "OnHand" either to default or 0. The 'either or' is really for you guys. Which ever one works the best in terms of reducing code or functionality is obviouls prefered.Once the 'OnHand' Fields in every record has changed then I would like to save all the data back to the database'This is more than likely very simple I just cannot find anything that discusses this kind of thing.
View 1 RepliesMy form just isn't updating the row in the database: Here's my code:
Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
If Request.QueryString("a") = "edit" Then
Dim CategoryText As String = lstCategory.SelectedItem.Text
Dim conn As New SqlConnection("Data Source=.SQLEXPRESS; Initial Catalog=LogansArchive; Integrated Security=True;")
[Code] .....
I've never used nested SELECTs in SQL before so I'm not sure if I did it right. Aside from that, this is all stuff I've done before so I'm relatively sure that it's all correct. Finally, there are no errors being reported when I debug, although the updates don't seem to be coming through from the text fields (txtContent.Text isn't changing to reflect the new value).
I was trying to edit and update an existing record in my database. I am getting an error, my code is here:
Editing Records
Private Sub btnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEdit.Click
Dim qry As String
[code]....
I have imported a number of web elements that are called "reference values" from a website. These are added to the end of a website to navigate to a corresponding page. I am going to go to said website individually for each "reference value" and scrape code for use in a scheduling programming. How should i navigate to each of these websites when the url cannot be edited. The "reference values" are currently stored in an array but this does not seem like the correct method.
View 1 Repliesi have used this code to insert information into microsoft access database.however i dont know how to edit information from vb.the coding is below:
Private
Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
I am creating an xml file with LINQ as follows...
Public Sub CreateXml()
Dim db As New MDataContext
Dim Customers = <gallery columns="3" rows="3">
[code]....
Could i mix local values with the ones returned from the LINQ query...Something like the following?
Public Sub CreateXml(ByVal **Col** As String, ByVal **Row** As String)
Dim db As New MDataContext
Dim Customers = <gallery columns="& **Col** &" rows="& **Row** &">
[code]...
When I install my application, some forms are unable to connect to the database.
I say some because, when my login form works totally fine. Authentication happens.
But once I go into the main application, and open other windows, I start to get these error mesages:
[URL]
Ive created one database Sql Server Compact Edition 2005, with one table ("Cliente") I know that I can created my database good, but i have a problem saving information since three textbox, in my table(With columns "Nombre" "Apellido" "Cliente". In my form there is a button save ("Guardar"). When I do click in my button appear the next message : "The column cannot contain null values. [ Column name = Nombre,Table name = Cliente ] " and happen the same with apellido and Id_Cliente. And this happen becouse my code cant save the information....
This is the code
Option Explicit On
Option Strict On
Imports System
Imports System.IO
Imports System.Data
[CODE]...
And the code for my button is:
Private Sub cmdguardar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdguardar.Click
Dim myconnection As SqlCeConnection
Dim mycommand As SqlCeCommand
[CODE]...
I created a dataset and i am using OleDbDataAdapter to insert new values to access database. But when i close the program and after open it, values are not in the database. How can i solve this problem? Also, i have another problem. When i write codes that
[Code]...
I'm working on a tool that allows the user to connect to his SQL database and edit some of the database values.First here's a screenshot of the GUI (you can see my problem as well):
[Code]...
My Problem is we have two database. One for current year and one for last year.I have to get the sales values of this year and sales value of last year. The form i need is
WORLD LastYear_Sales CurrentYear_Sales
world 1 143124 65544
world 2 5635634 6666543
world 3 0 876876
now i will explain, world 3 is not in last year database, it is introduced in current year, so its value must be 0. I tried to union 2 queries, but its not showing correct.
Here is part of my [code]...
Here is my problem. My controls on the form were created from dragging and dropping one of my tables from the data explorer window onto the form in details form, not gridview. Amongst these controls are four comboboxes whose text properties are databound, but their items lists are not bound. When I click my submit button, all the data is sent to the database except the text from these four comboboxes. I have looked everywhere I can think of and can't figure out why the text from those comboboxes isn't being updated in the db.
The following is the code that i used to store all the values in the listbox ito the access database.but it is not working.I didn't get any error.but the values in the listbox is not being stored in the database.The field in sample table that stores the value from listbox is a multivalue field.[code]...
View 2 RepliesI'm trying to add values to a MySQL database. The values that I need to save come from several textboxes. The SQL-query is read from a XML-file.
Query: INSERT INTO myTableName(ID, Groep, Naam, Achternaam, Intern, etc...) VALUES(NULL, NULL, tel_txt_group.Text, tel_txt_name.Text, tel_txt_surname.Text, tel_txt_intern.Text, etc...)
Unknown column 'tel_txt_group.Text.ToString' in 'field list'
how do i get the values from my database in access in vb i have a table named Rates that has column PerMinute and column Amount
i want to access the data in the amount column. and make it appear on the AmountToPay.text
I stored rtf format directly into the database. Like in database
[Code]...
populate values from a database(Access) in to vb.net form. after selecting a field from first form , the next form should display all the parameters used in the selected field from the data base. Also if do editing it shppuld be updated in the database.
Public Class Editdetails
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim cn As New System.Data.OleDb.OleDbConnection[code]....