i'm using visual studio 2005 windows application vb.net language. i'm doing a company project and using MS access database.i want the user to add data about the new customer and save it to the database.i used the followinf
vb.net
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
my windows service crashes because of an unhandled exception in an oledb select command on ms access, i found that tables in query contain #Error as data value in some fields , can anyone tell me how to handle this case
View 6 Repliesi'm new to vb.net. i'm using visual studio 2005 windows application vb.net language. i'm doing a company project and using MS access database. i want the user to add data about the new customer and save it to the database.i used the followinf
[Code]...
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")"
In trying to open an access dataset I first click on add new connection and at the prompt enter a microsoft access database file. I click on test the connection and it says the connection is working. I click the next button and get the following error message: Format of initialization string does not conform to specification starting at index 0.
View 1 RepliesI have written a program that access's data from sql and it seems to work fine, I have now installed sql to the live server and restored a copy of the data in to the new server. I have altered the connection string in the program to point to the new server yet when I compile and run it it still wants to look at the old server
View 1 Repliesi'm trying to insert data from Form about customer and i have the following [code]but the underlined line above is giving me error that says"Data type mismatch in criteria expression" how can i sole this problem?
View 3 RepliesI get the error message: "Format of initialization string does not conform to specification starting at index 0" What does this mean and how can I get the database to open in vb express 2008?
View 5 RepliesI wish to create a stored procedure with multiple select statements. In addition, I then want to access each of the statements on the page load event. The purpose of the statements is to create multiple 'counts', and a number of labels on the page will each contain an individual returned count. At the moment I have created a basic stored procedure with two select statements:
CREATE PROCEDURE [dbo].[Finance_CustomerCount]
AS SELECT COUNT(Quote_ID) AS Count1 FROM dbo.generatedquotes WHERE (status = 2)
AND (Contract_End_Date >= GETDATE()) OR (status = 4) OR (status = 7) OR (status = 1)
SELECT COUNT(invoice_id) AS Count2 FROM dbo.invoices GROUP BY invoice_open HAVING (invoice_open = 'Y')
RETURN
I can then access the result of the first select statement by using this code:
Dim newconn As String = Session("ConnectionString")
Dim connection As New Data.SqlClient.SqlConnection(newconn)
Dim MyCommand As Data.SqlClient.SqlCommand = New Data.SqlClient.SqlCommand("Finance_CustomerCount", Connection)
[Code] ....
So what I basically need to know is, how do I access the second select statement result set for another label.
I have this form: Attachment 73106 In this form,I want to fetch data from the database(access). Initially when the form loads,the balance field remains disabled. But when i select a data from the dropdownlist of the account number then i want the corresponding data of the balance field from the database is shown in the balance filed of the form and the textbox becomes enabled since it is containing the data. I did this at the form load event:
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i am using Access 2003 and vs2005,i am trying to add data to my crystal report from my access database,ok. So to do this i followed these steps: Now after all these steps,how to add the column names of the table "Table1" in my crystal report?
View 11 Replieshow can we or can we import data from PC RAM, and stored it to data like text or grafik...
View 6 RepliesIs there a need to explicitly close the connection in this Microsoft Data Access Application Block for .NET? i am encountering timeout expired pooling errors in the sql server 2000. I am wondering if the unclosed connection is the problem
View 2 RepliesWhat's the best method for connecting VS2005 and Access Database. I want to ADD, EDIT, REMOVE and DELETE data from Access.
View 4 RepliesI've got a program where the insert/update SQL was created with the values coded directly into the SQL string. I've changed this to use the Command's Parameters.AddWithValue method and all worked well. I'm now in the process of separating the data access code out into it's own class. I've got the Select code working using a DataSet in the form that I pass ByRef to my data class so it can populate or refresh it. My sticking point is in how to pass the parameters for the Insert/Update commands to the class since from the form I no longer have access to a Command object. Do I need to make the Command object in the data access class available to the form?
View 6 RepliesI 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)
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I am usinf VB 2005 Express and I an trying to connect to a SQL Server 2005 Express Database using the "Add New Data Source"I keep gettig the following error.Unable to open physical file "C:Program FilesMicrosoft SQL Server MSSQL.1MSSQLDataHeartland.mdf. Operating system erro 32: "32(The process cannot access the file because it is being used by anither process.)"An attempt to attach an auto-named database for the file C:Program FilesMicrosoft SQL Server MSSQL.1MSSQLDataHeartland.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
View 2 RepliesI have a show button.The user will select a data from the dropdown list of the combo and on clicking the show button the corresponding data will be fetched from the database and will be shown in the corresponding fields.So I did this
Private Sub Show_Btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Show_Btn.Click
Using connection As New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=BankAccount.mdb")
connection.Open()
Dim command As New OleDbCommand("Select * from BankAccount", connection)
Dim reader As OleDbDataReader = command.ExecuteReader()
[Code]...
I m getting a syntax error (oledbexception was unhandled, Syntax error in INSERT INTO statement.) while trying to add a new record to my access table. This is the
[code]...
Everything runs smoothly up untill this line daadmin.Update(dsadmin, "AdminLogin")I dont see what im doing wrong, the database name is booking.mdb and the table name is AdminLogin
How to allow duplicate,orif I enter a duplicate, to display Msgbox.
View 2 Repliesi have a form with some text boxes on, for now im just testing with one of these boxes 'Customer Name' So i made a database and made a two column table with ID and Customer Name. then in my pogram i put this code:
Dim inc As Integer
Dim maxrows As Integer
Dim con As New OleDbConnection
[Code].....
into my save button, however i get a 'oledb exeption was unhandled' ''Syntax error in INSERT INTO statement. on the line da.Update(ds, "Customers")
I'm trying to add a computed column to a datatable that references another column in the datatable. Sometimes the computed column has a mathematical operation applied to it, but in this case I'm just referencing the original column. The code looks like the following:
ReportData.Columns.Add("1_1_US", _
GetType(Single), _
"1_1")
The code isn't actually hard coded as shown above - there are functions that return the values for the first and third parameters - but I checked those and they are returning the expected values and not generating any errors themselves.
The error is thrown when the .Add method is called, and the error states "Syntax error: Missing operand after '_1' operator." It seems to me that it doesn't like the column name, which I suppose I could change and just workaround it at the presentation level. Still, I'm curious. Is this a bug in the .net framework or something? It doesn't mind "1_1" as a column name in the datatable, so why is it having a problem with it in the expression statement?
orking with vb 2010 and ms access as data base, just newbie.im trying to save the loged out date and time to my access table by selecting from tblloghist wherein my column SystemUserID is equal to my textbox SysID(located at my form) then it will save the timelogedout by getting the value of lbltime from my form. the problem is the data type property of my column SystemUserId is in autonumber so i got error saying "Data type mismatch in criteria expression"
Dim con As New OleDbConnection
con.ConnectionString = "Provider=microsoft.jet.oledb.4.0; data source =..systemsdb.mdb"
Dim ds As New DataSet
[code].....
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.
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I have created a very basic web service in vb.net using vs 2008. When I run the service within visual studio debugger, the service runs fine and gives me the expected results. When I deploy the service to the server and invoke it from a client, it always throws a NullReferenceException error when trying to access the data. More specifically when I call the DbConnection open() method within a dbhelper executeScalar method.
I'm using a custom dbhelper class I found on the web here: [URL] The only thing I've changed is the _factory at the top points to Providers.Odbc (since I'm using a ODBC connection). Like I said previously, the service (and the dbhelper class) work as expected within VS- it's only once I deploy it that it seems to bomb out. I've even tried hard coding the connection string in case it was having problems getting that but no difference there.
an error message when I am trying to load the data into a listbox and the value in the table is NULL. I am new in programming and I am using vb2005 Here is my
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I have looked at this for hours and can't seem to figure out what is causing the datatype mismatch. I am trying to insert from asp.net to a access database
insert statement:(ignore the poor practice with the concat parameters)
Dim BSSQL As String = "insert into bodyshop (startdate, enddate, frontbump, rearbump, touchup, other, vehicleid)" & _
"values('" & StartDateBodyShopTXT.Text & "','" & FinishDateBodyShopTXT.Text & "','" &
[code]....
here is a snapshot of the table:the format of the yes/no fields is "true/false"
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 RepliesI'm using Vista home premium and VS2005 (and VS2008 beta 2) When trying to make a new project or and a new file,class,libraryn,... I get the error "requested registry access not allowed".
View 1 Repliesgot an ErrorProperty access must assign to the property or use its value.Here i attach the code which have an error.In this program i tried to add data into form . I also create button , textbox. i am using visual studio 2005 and sql 2005. i also have attach the imagece
Private Sub btnregister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnregister.Click
admin1.LoginDataSet.staff(Me.NAMETextBox.Text, Me.TELEPHONEMaskedTextBox.Text,
[code].....