I have MSaccess database.I have 2 tables 1) CUSTOMER TABLE=----CUSTOMER ID-Primary --AUTO NUMBER2) ORDER TABLE =----(CUSTOMER ID--Foreign KEY) Now From the front end using VB.net I have an page in which if i enter Customer details and press button add .I have to INSERT into values into CUSTOMER TABLE and I Also at the same time INSERT into ORDER TABLE with this CUSTOMER ID which i generated now.How is it possibl
View 13 RepliesI have a code here which is to insert values in both the tables which has Relationship.[code]...
View 4 RepliesTrying to run the following code but am receiving an string to integer error. Basically, I am running a report through code and trying to retrieve a number from a line of code by removing the line description and spaces. Having problems trying to figure out how to do that.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim strURL As String
[Code].....
I'm using a mysql as my backend database and i'm using the mysqldata adapter for binding the data, i have my data in the database, but the problem is i don't know how to retrieve it, for example when i want to add a record, before i add that record, i want to retrieve the data in my database to trap that the record i'm adding is an existing record
View 11 RepliesDim NewOutwarsDeliveryNoteNumber As Integer
Dim iSql As String = "SELECT MAX(OutwardsRefNumber) FROM NewOutwards"
Dim da As OleDbDataAdapter = New OleDbDataAdapter(iSql, LoginForm1.Conn)
[code]....
when I try and run this code it gives me the error that says "Column 'OutwardsRefNumber' does not belong to table ."BUt I am 100% sure this column is in my table. what can I do to correct it?
I am running into a problem while attempting to to retrieve data from a database. One of the items is an iage and it's throwing an error when I try to convert the byte array to a bitmap.Here is what I have. The exception "Parameter is not valid." is being thrown when on the line bmpImage = New Bitmap(stream)
Private Sub GetCatList()
Dim strSelect As String
strSelect = "Select CategoryID, CategoryName, Description, Picture"
[code]....
when this button is click, it will retrieve all the records in different fields in MS Access 2007 and display onto the RichTextBox. But when i run the code and press the retrieve button, an error occurs. (NullReferenceException was unhandled. Object reference not set to an instance of an object.) Plus im sure my code to display records on richtextbox is wrong as i created another project purely with a button and a richtextbox, only the last field in access is displayed.
Imports System.Data.OleDb
Public Class Form1
Inherits System.Windows.Forms.Form
[code]......
I have a VB.NET application that references a 3rd party Com component. The file is Interop.WINTSRRLIB.dll. My VB.NET application has a project reference to the COM comonent which lives in the directory: C:WaveTracker. The application runs fine. When I sent it to my customer, he installed in on his desktop machine. It runs fine. Then he copied all of the application files (which live in C:WaveTracker) to his laptop. However, on his laptop, he gets the error:
"System.Runtime.InteropServices.COMException (0x80040154). Retrieving the COM class factory for component xxxx failed due to the following error: 80040154" The customer swears he has the .NET 2.0 Framework installed properly on his laptop. Any ideas on how I can get over this problem???
I keep having this error coming up. Im retrieving messages from outlook. But it bring up this error.
View 4 RepliesMy client is having 2 application servers (111.222.333.111 & 111.222.333.222) for load balancing. The main link is [URL]. My clients are saying sometimes they can log in and sometimes they cannot log in. This is what I found out:
[Code]...
I got a weird problem here like I got a site that users can post comments on a friend profile page.Everytime a user post a comment my application sends e-mail to that page owner, you know to inform for a new posted comment on his/her profile page.The problem is I want to stop the application from sending email if that user has just recently posted a comment say like 5 hours ago/earlier.Here is the function I use that would try to check it:
[Code]...
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
[Code].....
how do we connect database in access after con.Close() since we do all operation after the con.Close() and works properly.
I have this XML:
<root>
<data name="lnkViewResultResource1.Text" xml:space="preserve">
<value>bekijk de resultaten</value>
</data>
[code]...
But, unfortunately, it is not working, it is not getting anything.
I'm using two textbox's to enter text and retrieve the data and then show that data in a datagridview.Here is my
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
[code].....
Dim cn As OleDbConnection
Dim cmd As OleDbCommand
Dim dr As OleDbDataReader
Dim intaccount As Integer
Try
[Code]...
I am using two textboxes, one for roll number and the other for the corresponding roll number.
And I am using 4 command Buttons
Move First
Move Previous
Move Next
[Code].....
I am trying to retrieve the data in a DataGridView and display it in a RichTextBox.
[Code]...
This pulls the data from the first row only though, i want to be able to pull the information form each row and display it on a new line? So if there are 8 rows there will be 8 lines of text with the same values as set in the DataGridView?
I have created a .xsd dataset using the visual studio installed template ->DataSet. nothing programmitcally rather it was using the toolbox and creating various DataTable. how do I retrieve the data once it is assigned programmitcally.
View 2 RepliesI'm making a timer program, that I want to be able to store "unlimited" timer profiles, that someone can load and use. Now I've created a form that you fill with data, which then gets saved to a .xml file in a pre-defined directory. I'm now working on some sort of code that will:
1. Search the directory for .xml files
2. Find any .xml files and convert names to strings
3. Store the strings in a dropdown menu, so that when one is chosen, it loads that profile.
I think I have 1 down:
System.IO.Directory.GetFiles("C:Simple Timer")
Dim di As DirectoryInfo
di = New DirectoryInfo("C:Simple Timer")
di.GetFiles("*.xml")
Below is my code for login page I would like to show login user detail on home. For login my code works properly but does not show currently login user show following error "NO data exists for column/row".
[/CODE]
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Login.Click
RetrieveUserPass()
End Sub
[code]...
I Want to Display Content of Database Into TextBox,i.e. i have column named "Ename" in "EMP" table of database1 ,now i want to display "Ename" in TextBox of my form , so, how can i do this ?
View 11 RepliesI am interested in making a simple budget program that retrieves current transactions from my bank account and categorizes them appropriately. Is the proper way to do this:
1)Automatically log into the website
2)Read and parse the data
3)Place in correct category?
Is there anything special I would need to do when handling the login/password or should I just do this manually?I'm assuming that is how popular prgrams like Quicken do it.
i am working with the XML.i created a new winapp,added a label to my form.then i added xml file by : Add - > New Item-> XMLFile1.xml.[code]all i want to do is to display the message present in the body part in the label present in the form1.
View 1 RepliesI am getting the below error while i am using Microsfot excel interop. In my server there no excel installation. With out excel installation i want to export data to excel. So i used excel interop. But i am getting the below error.
Error: Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154.
I am using the below code. It is working, if the machine have excel installation, But i dont have excel installation in my server.
Dim lobjExcelApp As Excel.Application
Dim lobjExcelWrkBk As Excel.Workbook
Dim lobjExcelWrkshtFee As Excel.Worksheet
Dim lobjsht As Excel.Worksheet
[code]....
I have created a small SMS apllication with Windows application.Ihave used two dll called "lcgsmsms" and "Interop.excel".But even after adding all those dll ,while building my aplication
(1)it shows ambiguous column name and after debugging ,
(2)It shows SQL server could not connect remote connections and
(3)getting error "Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154."
Im not good in querying. I would like to ask if this query works.I want to retrieve starttime, endtime and sessioncost from the table SESSION of my database. my program will be an autorun.
Dim sql As String = "select STARTTIME, ENDTIME, SESSIONCOST from SESSIONS where CLIENTID = (?)"
I am using ASP.NET.
There is a system that needs to POST data to my site and all they asked for is for me to provide them with a URL. So I gave them my URL [URL]
Now I do not know exactly how they POST it but now on my Test.aspx page I need to write code that will save that data to a database.
But how would this work and what must I do on my Test.aspx page?
I wrote some code in my Page Load Event that sends me an email on Page Load to see if they actually hit the page and it does not seem like they are even?
I have created a database in VB2008.NET using SQL 2008.
My problem is that while I am in the form where I see the the data, I want to retrieve backwards the related data from Owner and Car eg. the owners name and the car model.
Is there any way to do this in a single row?
I basically need to hold a lot of data - the structure is that of a five dimensional array holding integers.What would be the most efficient way of storing this in a file (I was thinking of XML - your opinion?) that would also be quick to extract.
View 3 Replieshow to work multiple bookings into my program. At the minute i have two calendars, one visible (Start date) and one invisible, wich the user can make visible if a repeat booking is required (End date).
How would i work a repeat booking into my SQL Statement, as i only have one BookDate field and one BookDate parameter.
e.g.
Dim BookRoom As New SqlCommand("INSERT INTO bookings ( UserID, RoomID, BookDate, StartTime, EndTime, Reason) " + _
"Values (@UserID, @RoomID, @BookDate, @StartTime, @EndTime, @Reason)")
[Code].....