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.
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.
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** &">
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
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
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):
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]...
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..
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]....
I'm trying to create a function that will check the database and compare it with the value of my label. (Basically a Version Checker) If it is the same, then nothing is displayed, if not, then I'll disable some buttons and change another text to display something. Here's the code I have so far...
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Panel2.Visible = False
[Code].....
I'm positive that I'm just not putting the correct calling reference in this part:
I'm developing a hospital management system. I need how get data related to a doctor which enter in text box. In my database there is a table for doctor details.
I'm wondering if any one knows a way to take two values from within VB and send them to a database. then return a list of values cpu (temp) list of all temp's ( and what is the best type of data base to use for this - it will need to be on the internet )
I have a dataset that contains decimal values pulled from a database, when I try to assign the values in it to variables, the decimal values somehow got rounded to a whole number. I have manually ran the query which selects a column of decimal(18,4) datatype and verified that the output contains decimal places. During the breakpoint, I also found out that the (dtr(c.ColumnName)) actually becomes an integer.
Dim bannerValsAmt(1) As Decimal Dim bannerVals(1) As String Dim i As Integer
i have one fill box and 2 radiobuttons in my form. I also have a database in which I have a table with names of workers, their smoking and marital status. My aim is to choose from radio button 1 if worker is smoking (yes or no) and radio button 2 if the worker is married (again yes or no). According to the selection, the list of workers matching with the selected criterias should be shown in the listbox1. Here is the code I wrote and I do not know how to complete or correct:
if textbox1.text =S1, S2 then on button click event the S1 and S2 column value of Table in MSSql2005 database will be updated with the value "b" where date=1/3/2012
How 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".
I 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.
I have a listbox in which i have to display the first column of the table.
cnString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=AirLine.mdb" Dim sqlQRY As String = "SELECT flightId FROM FlightDetails"
I have a form where when the user clicks the button the values of the form are stored in SQL database. I want to write code in order to check if a specific textbox-value already exist in the database table (in the field "Name"). I 've tried writing something but it doesn't work properly.
I have a tblVersion that contains the versions of my application:
VersionID Version
VersionID is a bigint primary key, version is a ntext column that holds the current version... I want to be able to pick the row that has the highest version number, but version could be in this format:
MyApplication 1.0.1
If I try to convert that to a int32 it will throw an exception obviously. I would like to know if some of you have a idea how to solve this issue. I could of course make sure the column will only contain numeric values but this gives a little more flexibility.
I'm trying to fill a ComboBox with values from a column in a database.I'm trying to use code I found in jmcilhinney's CodeBank post at url...credits to him since it's basically 100% his code in my image below I've tried 4 methods before this, and I've been receiving the same error, so it must be my fault.
