Excel As A Database Backend To Load Into A Datagridview
Mar 8, 2011
I'm using Excel as a database backend to load into a datagridview.
This is how I connect and bind to the dgv:
vb.net Dim sFileName = filelocation & "checks.xls"
Dim connectionStringTemplate As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml;HDR=Yes;IMEX=1"""
[CODE]...
It connects and populates fine. I have a button for the user to "refresh" the datagridview. I cannot get it to correctly refill the dgv. I have tried setting the bindsource.datasource to Nothing along with the datagridview datasource, but I get an error that brings up the Visual Studio debugger with no real error message...
View 3 Replies
ADVERTISEMENT
Oct 28, 2009
how can i use Ms-Excel as a backend database in visual studio 2008 applications, if is it possible
View 2 Replies
Feb 7, 2010
I was wondering if there is any way to load data from excel sheet into a datagridview in VB2008 dynamically. I have looked at few data connection codes but all of them involve the excel sheet and thw workbook name. Is there anyway that I enter the excel sheet name in a inputbox and the data from excel loads into datagridview without hardcoding the sheet name. I know data can be imported using the below code, here the programmer has to mention the excel workbook name, path and sheet name. [code]I am developing a program to perform some calculations and my data is in a number of excel workbooks and worksheets. I need to be able to bring the data from these excel sheets into the datagridview to perform calculations. So I was thinking if I could mention the excel sheet name in the GUI and then accordingly the data from that particular sheet would be loaded into the datagridview to perform calculations.
View 5 Replies
Dec 14, 2011
My problem is that I need to use a access database as a backend for my visual basic.net program.
The database will be accessed by a maximum of 10 users but I want to lock tables when a user is updating a record.
I am unable to use the SQL server at the company due to it storing sensitive information.
I have some basic knowledge of ado.net
I have read many articles but I can't find any articles that say how to lock a access .mdb file using Visual basic.net
View 1 Replies
Nov 16, 2010
I has a Access database ...that is password protected.... i am connecting in this manner given as follow .......(Without password protection)
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=D:My Documentsdb2.mdb")
cn.Open()
///codes.......
cn.close()
how can i edit that can use for access those password protected Access database
View 2 Replies
Mar 9, 2010
I've been using ms access bfore but want to upgrade coz the company im working in is getting bigger. With almost 10,000 new clients added every week. Im afraid access can't handle it anymore. So im planning to create a new database. Im really new to this SQL Express but have knowledge in sql using vb codes. Is it easy to be used as backend database?
View 6 Replies
Mar 15, 2011
i have code to load data from database to DataGridView.
VB.NET
Imports System.DataImports System.Data.OleDb Public Class Form1 Dim dt As New DataTable Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Me.WindowState = FormWindowState.Maximized End Sub Sub setData()
[Code]...
View 4 Replies
Oct 28, 2007
I have a password protected database (.mdb) which has 2 different tables, and a DataGridView What I want to do is:
[Code]...
you would think that this would be simple, but with some sample code i found i could only get it to load and not save, or it would be written for a datagrid and not a datagridview.
View 4 Replies
Jan 28, 2011
I am developing an app that uses a sql backend database (hosted on a different machine).The app I am developing will be run on 10 different workstations simultaneously.Sometimes the app will change the database in such a way that the database needs to initiate a workflow process and I'm not sure of the best way to do this.Also, when database changes happen, how does one best notify the other app instances that the change has happened, so they know to refresh their data? I was thinking that triggers could help initiate the workflow but it might be nice to develop the actual workflow in .net code.Should I write another App to run as a service on the server and do the work and also to tell the client apps when things change?
View 1 Replies
Jul 27, 2010
easy way to simply load the data from database into a datagridview with one of the columns being a comboboxcolumn. Apparently there is no selectedvalue, selectedindex or value as in a combobox to return the combobox value. What I need is to verify if the database value is 'true' and if it is then I need to set the comboboxcolumn with a specific value.
Ex:
if ds.tables(0).rows(0)("flag") = "true" then
datagridcolumn.selectedvalue = 1
else
datagridcolumn.selectedvalue = 0
end if
View 1 Replies
Apr 20, 2009
I'm a bit new to VB.NET and I have a database which I want to connect to an access backend stored on a network drive for multiple users. I can view the Database in the solution explorer and the directory defaults to the project folder. How can I specify the directory to pull from my network drive? VS has copied this datasource and imported it locally which is fine for testing, but i need the file accessible for multiple users. Is this something I do when publishing?
View 3 Replies
Jul 19, 2008
How To on a database driven login form. I'll include the Administration Backend to go along with it soon. Dial-Up users should not use this thread, it is image heavy
[Code]...
View 17 Replies
Jul 6, 2010
I am an absolute newbie in both oracle and visual basic. I have covered some basics as tutorials and want to develop a database using Visual basic as front end and Oracle as back end. I have Visual Studio 2008 installed and I will use Visual Basic from that. I also have Oracle 10g express edition installed on my system.
View 6 Replies
Jun 10, 2010
I build my project and i got some problems. First i want to print barcode for books(toolstripmenu item). but i cant. here's the code that i found:
[code..]
second problem is printing again. i want to print my MS ACCESS .mdb from child datagridview's records.
third one i want to save and load(with dialogs) my database from main form to child forms' datagridview.and the last one is help provider. i prepare my own .htm help file, when press F1 it opens. but i dont know how to call provider to toolstripmenuitem and help provider keep my computer's path so when i call provider another computer, the programme cant find the path.
View 10 Replies
May 8, 2012
We are thinking about changing our current database system, MS Access 2007 front end and MS SQL Server 2005 backend to using a higher level language such as Visual Basic .Net. I wonder if this is the BEST solution for data management? Currently, among others, we have two big database programs that handle more than two hundred users and it's crashed often. That's the reason we think about changing to something that can handle these database programs effectively preferably using MS technology such as .Net.
View 12 Replies
Jan 10, 2012
I'm trying to export a datagridview to Excel and open the Excel spreadsheet (not SAVE the worksheet).
Public Sub ExcelRpt(ByVal DgvName As GridView, ByVal url As String)
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet
[code]....
View 1 Replies
Aug 6, 2011
I'm starting with VB 2010. I have an Excel file with a lot of info (dates, kilometers, price, name, etc.). I have been reading about that but I don't do it right. I want to now If someone of you have some code to study or any other resource.
View 6 Replies
Dec 31, 2008
I am trying to load an array from an excel sheet (in xml), whic I have managed by altering some code kindly provided by Beth Massi. the trouble is that I don't really understand some of the original code, hence I cannot remove the binding to some objects in the GUI that I don't need.
[Code]...
View 1 Replies
Apr 19, 2012
At this point my program needs to load two files from excel which I have done manually in the
Private Sub Excel_Load_L_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
APP1 = New Excel.Application
[Code].....
I'm looking for a way to get the user to choose the file path, ideally with a message box they can browse from rather than just setting up
workbook1 = APP1.Workbooks.Open(TextBox1)
where the user has to find the file path personally.
View 3 Replies
Jul 18, 2011
I have a btye array that I would like to load into excel. This will do this in vb.net with visual studio 2008.
How can I load the byte array into Excel via memory or with code?
View 1 Replies
Jan 10, 2009
I'm migrating to vb.net 2008 from long experience of vb6. I managed to create an Excel Sheet as an object, write data and save. How though, do I load an already created Excel file? The following code does a save, but what do I need to load a file?
ExcelSheet.SaveAs("C:UsersKochanskiDocumentsVisual Studio 2008ProjectsExcel TricksTEST.XLS")
View 9 Replies
Oct 12, 2009
I have an app, it was working but when it was copied to another machine, an error occuied.
�Could Not load file or assembly �Interop.Excel,Version 1.5.0.0Culture =neutral , publickey token=Null or one of its dependencies ,System could not find the file specified�
I do have interop.excel.dll at the same place with app.
View 5 Replies
Apr 23, 2012
the following is a working button to load excel data into a listbox. When I first wrote it I just used a loop to pull items 1-10 to do testing. Then sufficiently forgot about it and remembered just now. So in short here's the button:
[Code]...
View 1 Replies
Apr 21, 2009
I am having a problem regarding to Importing file from excel to listview. Actually my problem is that my program will let the user define what database he/she want. I know already how to load on my listview from .txt, access, ms sqlserver, but my problem is the user want to open from excel file. Base from his data, the columns contained Contact, address, age,name and only in sheet1. My problem now is that the user want to call his/her excel act like a database. The tablename will be Sheet1 and if he/she want to display the age and name column he/she can view by calling the its columnname. The columname will act as a fieldname. How can I do this upon loading all of this to listview. I have here an example on how i load data from .txt(csv) format but i need an excel on how to load data coming from excel.[code]...
View 1 Replies
Apr 5, 2011
I have to use VB.Net. Microsoft provides black magic tools (in the Visual Studio IDE) for making AJAX work, but using these seems hopelessly complicated and documentation for these tools covers only the simplest examples. By contrast, writing the scripts myself seems much easier, and I will understand what is going on.
So my question is, is it possible to write my own AJAX javascript (creating the XMLHttpRequest object, etc.), and have the server-side function be written in VB.Net instead of PHP?
View 1 Replies
Apr 16, 2010
I have a program that reads data from excel.
I use:Imports Microsoft.Office.Interop as well as a Reference from the "COM" tab called "Microsoft Excel 11.0 Object Library"
I built my program then copied the .exe from the inDebug folder to a location on my company's server. I then double clicked the .exe and it ran as I expected it would.My boss then tried (from another computer) and he gets this error:See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
[Code]...
View 14 Replies
Oct 26, 2010
Whilst trying to load information from an Excel File I have, I get the following message:
System.Runtime.InteropServices.COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC
from this:
Code:
Dim strFileTeam As String
Dim objExcel As Excel.Application
Dim objWorkbook As Excel.Workbook
[code]....
View 3 Replies
Feb 8, 2010
Why I've choosen this forum (VB.Net) instead of Reporting is this seems not a matter of reporting. When I load the report normally, it works fine. When I export the report to Excel, it works fine again. After that when I tried to open the report again, it gives the error : "Load Report Failed" . I've to restart my application for make it work fine again.I'm using a Crystal Report Viewer control to load the report.
View 5 Replies
May 5, 2010
how to load the datagridview in vb.net code
View 2 Replies
Jan 29, 2010
In order to save the DataGridView to XML i use this [code]...
View 1 Replies
