i have encountered this error Variable 'dsNewRow' is used before it has been assigned a value. A null reference exception could result at runtime when i click on the button to insert data into my ms access database.
[Code]...
I have an MS Access 2003 database built that resides on a shared network path at the company I work for.The database works perfectly for users connected directly to the company network.However, when a user tries to open the database while connected remotely to the company network (they can still access the shared path), they receive the following error:The Microsoft Jet database engine stopped the process because you and another user are attempting to change the same data at the same time.At the time that they tried it, they were the only person accessing the database.They tried a local copy as well as a copy on the network shared drive.[code]
View 4 Repliessolve the syntex error in INSERT INTO Statement I am using access 2003 as Database. Below is my code. tried all I know but failed.
[Code]...
I have a Visual Basic 2008 Windows form application that processes some scores and data. I want to export the data to an Access database. I have created the Access database and connected it to the VB program.I am looking for a simple set of commands or sample code to add records to the database. Perhaps I am oversimplifying the problem, but it seems like it should be so much easier than it has proven to be. I only want to export the data in code; the user should never see the database or do anything to it while the program is running.
View 3 RepliesI am using vb2008 express to work an Access 2003 database. I want to use code to delete the table after I have used it and before I close the program. Is there any code to accomplishg this?
View 1 Repliesim a newbie in vb.net and i am using vb.net 2008 express edition,,i am creating a project which is importing csv data in my database,
View 5 RepliesMy pc is a Vista SP1 + VS2008 I try to import a csv file into an existing access database with the following code but I have the message that the database is only in read access and I can't update it with the csv file.I tested the code on an other pc with XP and VS2005 and it works.
[Code]...
When I try to make a new workbook from excel it doesn't work and returning the following error:
System.Runtime.InteropServices.COMException was unhandled ErrorCode=-2147319784 Message="Old format or invalid type library. (Exception from HRESULT: 0x80028018 (TYPE_E_INVDATAREAD))" Source="Microsoft.Office.Interop.Excel" StackTrace:
[Code].....
Anyone know how to take backup of Access database through Coding in vb.net.Means when i click on button ,the folder should be automaticaly created and that folder contains Access database file with current entered records means updated database.
View 2 RepliesWhen using the codeTryMe.Validate()Me.CustomersBindingSource.EndEdit()Me.CustomersTableAdapter.Update(Me.NorthwindDataSet.Customers)MsgBox("Update successful")Catch ex As Exception MsgBox("Update failed")End Try in the walkthrough given in http://msdn2.microsoft.com/en-us/library/0f92s97z.aspx, changes were not saved to the NORTHWND.MDF file in the project folder or bin folder (not updated).
View 1 RepliesI am still having trouble moving data between sql and ms access databases.
View 6 RepliesPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
connetionString = ("server=192.9.200.82;database=eKalyan;user id=invite;password=invite")
MessageBox.Show("connection established")
[code]....
Previously i used Visual Studio 6 Professional Ed. Now on to 2010 Ultimate.I just want to know how to connect a .accdb (Access 2007 database) in VB 2010 and retrieve/edit/delete records....?
In VB 6.0. i used the code as below to open a .mdb database file....
xyz.mdb contains a table called "pwd" with fields "User" & "pwd"
Public db As Database Public rspwd As Recordset
Set db = OpenDatabase("xyz.mdb", False, False, ";pwd=abc") 'To Open Database
Set rspwd = db.OpenRecordset("select * from pwd", dbOpenDynaset) 'To Open a table as a recordset
I have a program in VB.NET 2005. At some point I have to open an Access2003-Application for getting data in it. I do that by pretending my program is a human user and let it do all the work in Access as a human user would do. Filling Fields, pressing buttons etc. I use the Primary Interop Assemblies for that. So far so good. That code is in use for over half a year now. In the last week I got Office 2007 installed on my machine. Of course I tested the installed version of my program if everthing still works. Every test was succesfull. But if I do the same tests in Visual Studio it always crashes.
All I get is this Errormessage: {"Das COM-Objekt des Typs "Microsoft.Office.Interop.Access.FormClass" kann nicht in den Schnittstellentyp "Microsoft.Office.Interop.Access._Form3" umgewandelt werden. Dieser Vorgang konnte nicht durchgefhrt werden, da der QueryInterface-Aufruf an die COM-Komponente fr die Schnittstelle mit der IID "{66B22FB4-F70E-4F03-A00A-F76E9ADBBF10}" aufgrund des folgenden Fehlers nicht durchgefhrt werden konnte: Schnittstelle nicht untersttzt (Ausnahme von HRESULT: 0x80004002 (E_NOINTERFACE))."}
For all who can't read german:
"Microsoft.Office.Interop.Access.FormClass" can't be converted in to "Microsoft.Office.Interop.Access._Form3" ... Interface is not supported.
Code I use:
Dim access As Microsoft.Office.Interop.Access.Application = Nothing
.
.
.
access = New Microsoft.Office.Interop.Access.Application()
[CODE]...
The Error occurs when I try to access any property of "access.Forms("frmTest")"
I am using VB2005. I am trying to write to an Access database seperate from the data's origin. AKA: I need to run a query getting data from one Access table and write it to a table in another Access database.
Overview: I need to get data from one Access table and two Excel worksheets. I need to write the data to an Access database so I can run a query combining the three into one table. I will then use the table to create reports.
I have googled, checked multiple sites, and checked MSDN. The only thing I have been able to find is populating a datatable and writing changes back to the database. This was SO easy in VB6.
I have getting error while update the data to Access db from VB.NET. Which is shown "No value given for more required parameters". Here i have given the code what i have tried.....
con.open()
dim a
dim cd as new oledb.oledbcommand
a="update inward set Quantity=" & textbox3.text & "Where tool_name=" & listbopx1.selectedItemm & ""
cd=new oledb.oledbcommand(a,con)
cd.ExecuteNonQuery()
con.close
I am using VB .NET 2005 and I would like to compact an Access 2003 database.I've read "How to compact a Microsoft Access database by using Visual Basic .NET" from the knowledge base but it will only save in Access 2000 (link below).Attempting this with a 2003 database throws an exception about not being able to save it as an older version (losing features and what not).Is there a way to do this with a 2003 database? url....
View 3 RepliesWhy is it that when I'm trying to run my program i always see this error>>>> syntax error in insert into statement.....i declared everythingin this function has an error:
if inc <>-1 then dim cb as new oledb.oledbcommandbuilder(da) dim dsnewrow as datarow dsnewrow=ds.tables("ryan").newrow() dsnewrow.item("ID")=textbox1.text dsnewrow.item("Password")=textbox2.text ds.tables("ryan").rows.add(dsnewrow) msgbox("data added!")
Using VB.NET with ASP.NET and and ms-access 2003 data, I'm trying to input data from a web form to the a table in db.mdb called 'USER'.[code]...
View 1 Repliesinstrruct me how to access a password protected mdb from VS 2003 VB.net
View 4 RepliesThe Calendar control (the Month Calendar) control in VB 2008. I am creating an attendance timesheet and I want the Calendar to color each date differently like e.g An employee Paul is selected from a list.
On the calendar I select the month. (The dates are not supposed to be selectable). Then lets say it is June. He is late on the 1st and the Second, so those days are supposed to be colored red (the whole block). Let's also say he is absent on the fourth and so I want that date to be coloured black. How do I do this? I tried finding a query and my friend told me that this functionality is not available in the current control and that I was best off making my own control (???).
I have tried selecting specific dates and bolding them (there is a function that allows this) but I am stumped trying to find two different ways to differentiate colours. Second:- How do I link a calendar with an Access Database?
I have a datagridview and each time i enter values in database the values are not reflected in the datagrid untill i load the form again.I want a method tat updates the datagridview without reloading the form.M using Microsoft Access 2003 database.
View 4 RepliesI want to create program in vb2008 express with ms access database. Can somebody help me so i can learn how to program using classes hard coded. I have learned vb6 before but it has a big difference on vb2008.
I have a database named "DATABASE" in ms access 2003 and the details are: Table :
EMPLOYEE(EmpNo, EmpName), DEPARTMENT(DeptID, DeptName), CATEGORY(CategoryID, CategoryName), SUPPLIER(SupplierID, SupplierName), ITEM(ItemID, Itemname), ITEMLIST(ItemListID, ItemID, ItemDescription), INVENTORY
[CODE]...
All the CAPITALIZED name are Table and all items inside the parenthesis are fieldnames. I don't know where to start on working on this RECORDS. I was able to understand visual basic 6 a bit, and i am trying to apply the coding to VB 2008 but all i get is errors. I am hopeless now and i need help to be able to start my programs. If someone can give me a sample code, i think i would be able to trace the line of code to be able to understand it. I am currently an inventory manager on the small company i was working with and i like to organize my record by using database.
I'mvery new to VB2008 and have basically no idea regarding much of coding. I have attached a copy of my form. Basically, I have a db named "employee.mdb" with table "Employee". It has 3 fields Name, Dept and Designation. I want to connect my db with the form and want the following functions (when the respective buttons are clicked)Add: Add a new record to the db and save it without overwriting an existing record.Delete: Delete the selected record from the dbSave: Save all details<<: Move to the previous record>>: Move to the next record. I hope I have explained myself clearly
View 2 RepliesI would like a listbox which use 2 fields for 1 Column, how do i insert this in a query?
[Code]...
Is it possible to pass data between a MODULE in Access and a VB2008 app?
To be more specific, suppose a VB app calls a MODULE in a access DB and the job of the module is to count the number of records that have "Joe" in a column. I know this can be done with a SELECT within the bindingsource BUT in some instances, it is much faster to pass the task to Access and return the result.
So - can an Access MODULE RETURN a value back to a VB app?
I've got this program I'm working on in VisStudio2008. Basically, it accepts a password and executes an Access 2003 database using the Access 2003 runtime. I've got the thing looking up a password and all is good, but there's one problem those annoying Access 2003 and higher warnings about unsafe macros. Does anyone know a way to make sure those don't show up when the program starts?My client has a database that someone else wrote for her. She's not at a point where she could have it rewritten (believe me, I've tried to talk her into that). So I have to stay in Access but it's not very professional to have those warnings come up.
View 5 RepliesAfter upgrading a db built in Access 2003 to Access 2007, the following code produces an error at FirstFind: Method or data member not found.
Here is the entire sub.
Sub List7_AfterUpdate()
Dim rs As Recordset
Dim Who_Name As String
[Code].....
I have some code that retrieves some data from multiple tables.This works fine.Now I want the data I retrieved to ADD to an excisting table in an Access 2003 DB.
How can I achieve this.I searched this forum and google...without succes :-(
The code I use to retrieve the data from sql server 2005: Dim connection As New SqlConnection(strConnectionStringSQL)
[Code]...
I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
View 2 Replies