I am creating a VB.NET application that will use a FoxPro database as it's main datasource.The problem I've got is that I can browse existing databases and pull out data with no problems at all but as soon as I try and create my own database I get an error message saying "One or more errors occurred during processing of command." (which is helpfully vague).[code]
View 1 RepliesI'm using VB.NET 2008 with a DataGridView and I'm interfacing to a Visual Foxpro 6 database using the vfpoledb.1 driver. When I change a value in the description field, it changes in the DataGridView but the database never gets updated. Do I need to use code to force the changes to take place?Here's the code I'm using:
Imports System.Data.OleDb
Public Class Form1
Dim sConString As String = "Provider=vfpoledb.1;Data Source=C:MyDatabase.dbc;Mode=3;"
Dim con As OleDbConnection = New OleDbConnection(sConString)[code].....
So Im working on updating our company's program from Visual FoxPro to VB and this is the first step. I can access and read data from the table
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
I am working on application to migrate DBF file data to SQL.
View 2 RepliesVS 2010, VB.NET, WINFORMS. In my app i have a need to import foxpro database tables and exclude the deleted records. The problem is that FOXPRO tables keep deleted items inside the same table. I have tried using DELETED=NO in the connection string but vb throws "Format of the initialization string does not conform to the OLE DB specification."
My function is as follows:
Dim _DBConn1 As String = "provider=vfpoledb.1; Data Source = " & file1 & ";DELETED=NO"
Dim _DBConn2 As String = "provider=vfpoledb.1; Data Source = " & file2 & ";DELETED=NO"
Dim _DBConn3 As String = "provider=vfpoledb.1; Data Source = " & file3 & ";DELETED=NO"
Google results pointed me in the direction of DELETED=NO but its throwing that exception error now that I have added it..
i have to start out saying that I have never used VFP before, so this is all new to me. However, I am running into issues that seems to have nothing to do with logic or reason. Let me explain.
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I'm trying to connect foxpro table (dbf) to VB.NET. I'm trying to display the records of that table to listview in VB.NET. Here is my code:I got an error message here, the error says "cannot open the file"
Imports System.Data.SqlClient
Imports System.Data.OleDb
Public Class Form3
[code]....
I want to create an index on a foxpro table. I used the following command
Code:fcn = New ADODB.Connection fcn.ConnectionString = "provider=VFPOLEDB.1;Data Source=" & tablefolderpath fcn.Open() fcn.Execute("INDEX on D:myfoldersales.dbf (BRAND)")But i get Command contains unrecognized phrase/keyword. message
I am trying to index on the brand field of sales.dbf table?
Consume a regular asmx web service in a dll projectI would like to open DBF-files, including the NTX-indexes in VB.NET which are used in FoxPro / Alaska Xbase. how to open both DBF nd NTX, because only open DBF-files would result in corrupt index (NTX) files.
View 2 RepliesI wanted to write a small piece of vb code to synchronize a few FoxPro dbf tables to SQL tables that having the same structure or at least a few fields that i selected. I had tried a code which I found on the net that running row by row and column by column to update the SQL tables but this code is too slow. In my dbf table it contains around 3000 records at least.
View 12 RepliesI dusted off VB.net, and now im trying to connect to a local FoxPro DB. Problem is, its not working. Ive been at this for about an hour or so, trying many misc things, but without any luck. [Code]. 'C:aaaCF21000.DBF' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides. Suggestions? That path is 100% valid, I can copy/paste that and open up the Database without error. I also tried other code I found on the web, some of them I cant even get them to run.
View 5 RepliesI have been tasked with converting Foxpro programs and forms into Visual Basic .NET and web application. Does anybody know of a tool I can use to convert Foxpro programs and forms and dbf into Visual Basic.net?
View 3 RepliesSo, I have successfully loaded dbf's into my VB project.What I need to know now is how exactly do I utilize the VFP language in addition to SQL?
Say I wanted to replace all fields (REPLACE ALL field1 WITH field2) with another field, how would I send that instruction to the DBF utilizing the VFPOLEDB.dll?
I think what I have here is an environmental issue. When I attempt to fill a dataset from a VFP table I am getting an error message that says "Index Not Found". The reason I feel its environmental is because the process was working perfectly fine last week. The client I am trying to run this program for runs it once per month to integrate one of their FoxPro systems with SQL. It's been in working order since November of last year, but suddenly now I'm getting this error. Some things I have looked at already are updating VFP drivers for both OleDB and ODBC.
'--- FOX variables
Dim cnFOX As OleDbConnection
Dim cmdFOX As OleDbCommand
[code].....
I have a foxpro table <b> INVENT.DBF</b> linked in MS ACCESS. When I tried to do a search in the table from vb.net application, it is taking a long time. So I want to index the foxpro table and then use it for search.
Here is the sample code I wrote in vb.net <i>
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:database.mdb;Persist Security Info=False")
cn.open()
cmd = New OleDbCommand("Create INDEX itmno_idx ON INVENT(ITEM_NO) ", cn)
cmd.ExecuteNonQuery()</i>
But I am getting error "Cannot execute data definition statements on linked data sources"
What needs to be done to index a linked foxpro table using VB.NET.
As part of a larger application, I need to IMPORT (not link) a FoxPro 2.6 DBF into a Access DB.I toyed with using a Access MODULE and in the module, using the docmd.TransferDatabase method.I have looked for days at different samples and I cannot seem to find the answer.This application is intended to be distributed with NO ASSURANCE the user will have the FoxPro OLE driver installed. Knowing that the ODBC driver will most likely be installed as part of MDAC, it is pretty safe to use the ODBC driver that is already installed - Visual FoxPro Tables
View 1 RepliesI am new to VB and trying to use it to update and merge some foxpro free tables. I have a connection and trying to use the update command but getting an exception. Once the code hits the ExecuteNonQuery line it throws the exception {"Command contains unrecognized phrase/keyword."} Do I need to create the command using parameters? Just not sure. Is the connection string correct - I did not get any issue with the cn.Open
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i am using vb/vb.net and the database is visual foxpro 6.0 then i want to create the tables from the application using sql statement.i need to add the number field into the table. i can not add the number field in the tableres.open "CREATE TABLE Customer ( CustName char(50), CustId int(2))",conXavier
View 2 RepliesI'm trying to develop 2 companion applications. One application will be a FileSystemWatcher service application that will create/maintain a database containing file metadata (file properties) from a specific folder structure on the user's C drive. The other application is executed by the user which contains edit boxes pertaining to the metadata. As the user enters data in the edit boxes, the code will execute an SQL statement which in turn will display a list of file matching the entered criteria.
I'm thinking about using Microsoft Access as the database since all users have it but I'm willing to use another database format as long as it something intrinsic to the Windows XP 64 bit system (i.e. I don't want to install another database application in order to utilize its database format). So, do you have a suggestion on a database format? Do you have some pointers or links, on how to create database file and tables on the fly? Should I use DAO or ADO or something else? I'd prefer to work in VB.NET.
In Beth Massi's Video How do I Create a simple Data Entry Form in Wpf? Video you use a Oms Data Base but it does not tell you how. Can someone please tell me how. Iam using Visual Studio 2010 In Vb code.
View 2 RepliesI am trying to set up a database with Students, Courses and grades. This is the main bulk of my code, I am stuck with the error below,
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I have written some software for a company I want to start, basically I want to supply automotive parts. The software I have created uses a database to hold information for users, parts, suppliers and so on.I want to write in a search bar so I can search for a part by name.The code I have written so far for this form is basically what is created when the new dataset wizard is used.[code]I have a datagridview that loads the data for my partslist table, underneath there is a textbox control for my search bar and a button to perform the search, underneath that I have placed another datagridview control to receive the results from the search.Can anyone help me write code to perform a search and place the results in the second datagrid control.
View 2 RepliesI am trying to create an empty table from scratch using Microsoft SQL Server Compact 3.5 and I am running into this problem.Please take a look at the screenshot below.[code]How come I do not have the same screenshot as the web site link below as Frank Smith showed in his example? What Do I have to do/install to have the same screenshot as in the web site below? I have Visual Studio 2008, Microsoft SQL Server 2005 and Microsoft SQL Server Compact 3.5 installed on my computer..url...
View 1 Repliesi want to know how to create a log in form using a database..i've watched some videos but its failed.im using visual basic 2008 and access database 2003...i have created a table for password..
View 9 RepliesBelow is my code for creating a database and then, from there i hope to be able to create more than one tables in the same database that i just created. But for some reason, Visual studio 2005 keeps reminding me that the SqlCeException was not handled or mishandled. Error lies in the "sqlCreateTable.ExecuteNonQuery()"[code]Actually i heard from someone that you can actually create all the tables that you need such as "Login", "Order" and so on in a single windows form(in form_load) , which will load up all your table and create them for you if that window form is the first object to start running in the order.
View 3 RepliesIm would like to create relationships between my tables from different database. im using VB 2008 and SQL 2008 as my database. Is the relationships should be made on my database itself or tru coding in my VB? If either which how can i do that.
View 2 RepliesI've been having some trouble wrapping my head around how to link the 4 tables I have together. I'm creating a database to store all of our equipment in. The four tables are Equipment, Service (Stores dates that a piece of equipment has been worked on), Invoice (Stores invoice and warranty dates) and Peripheral table (Stores a unique ID for each type of peripheral we have in the database. Monitor (1), mouse (2), keyboard (3) etc)
View 4 RepliesI want to create a relational database in VB2010 and I am attempting to accomplish this goal by creating a structure of records to be stored in a Random Access File.For each record, I want to organize each fixed-length record so that 4-integer sets of data are stored into a a multi-dimensional array.But when I try to write the code below at the module level, I get an error.
Structure PictureDat
'len= needed for Open
of Random Access File [code].....
Since I want to read/write/save the data in this structure to a Random Access File with a fixed record length size, I need to exactly specify the size of the record...which is, of course, determined by the array's dimensions.If I could accomplish this strategy, then I could search this random access file for a match of search criteria consisting of 4-integers with any of the 4-integer sets of data in each record and thus find, edit, delete and search records...therby retrieve information from my database.
Is my program design inefficient? Is there a better way to handle perhaps hundreds of thousands of records? The IDE keeps telling me that I am using a deprecated method of file I/O when I use FileOpen(), FileGet(),FilePut() and should be using MyFile.I am entirely comfortable with my time-tested method of data storage that ensures the security of disk storage while exposing only one record at a time to the PC's volatile RAM, thereby not allowing all my data exposed to possible memory corruption on a PC left on for hours, which would be the case if I loaded the whole file as a monster- sized string or stream. Also, these older file access methods allows my code to run on PC's with modest amounts of memory.
I am currently creating a windows form app with a database.The database hosts links that the user can customize.When I go to publish the file, if user A changes the Link to their liking user B also see's the changes and will cause a clash if user B does not need the link that user A has put it.
I wish to be able to have a unique database for each individual and for the life of me cannot figure out how.Currently I am having the person upload to an access DB. This is not required but I am lost for ideas
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I've been viewing the tutorial at [URL]...08-088541.html but I'm still having issues creating my connection to our Oracle database. Here's my code, which uses the same connection string as one of my VB6 programs (no password required for database--Oracle picks up windows name) :
Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Create connection object
Dim OraDB As String = "Data Source=databaseneme;Persist Security Info=False"
Dim conn As New OracleConnection(OraDB)
conn.ConnectionString = OraDB
conn.Open()
Me.Show()
End Sub
I've been using .NET for all of 10 mins so the error may be painfully obvious!