Sql - Exception On ExecuteReader() Using OleDbCommand And Access
Mar 23, 2010I'm getting the error below for this SQL statement in VB.Net 'Fill in the datagrid with the info needed from the accdb file
[Code]...
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OleDbCommand Access Databases?
Aug 7, 2010created a database and I am able to read from the database into VB and also able to create a new set of feilds. I do needte a set of records, can't seem to find the right code.The access database has 4 columns one of which is a unique code (column name is 'code') that relates to each different item so I would have the user put in the code to the textbox and then the programme will delete the set of records corresponding to that code
View 4 Replies.net - OLEdbcommand.Prepare Error - OleDbCommand.Prepare Method Requires All Parameters To Have An Explicitly Set Type
Jul 21, 2010I am getting an error: OleDbCommand.Prepare method requires all parameters to have an explicitly set type.
on the last line of the code below.I have seen things saying you have to set the datatype of each parameter but how can i do that when it being generated by the command builder?
[Code]...
DB/Reporting :: Create Access Database (VB 2008 Express Edition) OledBcommand
Jun 20, 2009I want to create a table (called "Customers") in a Microsoft Access database and then insert/delete records into the table and update the table. The table shall have 3 columns:
ID
Customer Name
Customer Address
I know i need to make the "ID" column as an autonumber and a primary key, as i need to insert and delete records and update the table. I am using the Visual basic 2008 Express edition and quite familar with the OledBcommand.
ExecuteReader Not Reading Access Database In Order
May 20, 2010I have a program using the OleDbCommand to read an indexed Access database. [code]I notice that when step debugging the program, the file is not being read in correct order.Example: it will read the record with "B" in the D01 field before a record with "A" in the same field.The record with "B" is the second record in the database.I do note that all records in the database are read before exiting the loop, just not in any apparent order.
View 5 RepliesWIN32 EXCEPTION LINE* Keeps Running Into An Error(Win32 Exception Was Unhandled; Access Is Denied)?
Apr 18, 2012I was scripting a very basic process manager, with a ListView component, and it was working fine for many days, up until now.Here is the code for getting processes:
Dim Process As New Process()
Dim Count As Integer = 0
ListView1.Items.Clear()[code].....
The line of code where I put "*WIN32 EXCEPTION LINE* keeps running into an error(Win32 Exception was unhandled; Access is denied). Here is the full error description:
System.ComponentModel.Win32Exception was unhandled
ErrorCode=-2147467259
Message=Access is denied[code]....
As I said before, this had been working for several days, up until now.
Check If An Oledbcommand Succeeded?
Dec 31, 2009Im working on an access database, and I want to know how can I fix the code below so that I could display the correct information to the user. The problem is, I want to display an error message if the oledbcommand did not succeed.
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VS 2010 OleDBCommand With More Than 1 Parameter?
Jun 24, 2011I'm using the following
HTML
Dim conz As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:BdadosCV_PARTS.accdb;Persist Security Info=False")
[code]......
OleDbCommand Select Returning Null
Feb 16, 2011Having trouble importing a value from a .csv file to a .csv file. This this done because data needs to be massaged and the data file renamed. This is a user interface. Do not want to have the user touch the .csv in any way except upload to the application so the applicaiton can do manipulation. Either way here is the issue.
There is a column in the original .csv file that contains a zip code. The first row of the .csv has a value of 17003 in the zip code column. In the second row of the .csv the zip code column has a value of 11746-9984. The value in the zip code column from the second row always comes back as a Null value. My guess is that the OleDbDataAdapter is defining some kind of Schema. Again, the first row containing the zip code column probably insists the value must be numeric. When the data table field is established it probably gets defined as numeric. If that is true and the second row of the .csv zip code column is not numeric that must cause the zip code value to be Null.[code]...
VS 2005 OleDBCommand String Manipulation?
Jan 26, 2011I am getting a syntax error missing operator, I have tried this so many times by eyes are crossed can someone spot my mistake?
HTML
"SELECT * , Left([DateSold], Len([DateSold])-(InStr([DateSold], 'AM')-InStr([DateSold],'1')+1) AS DateSold , FROM " & Me.OpenFileDialog1.SafeFileName & " Where
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VS 2005 Working With An OleDbCommand Statement?
Jan 15, 2010I need some help working with an OleDbCommand Statement existing statement
OleDb.OleDbCommand("Select *, (([AddressDisplay])&', '&([City])) AS Address
The City is stored in database with the city name and an additional abbreviation added. I need to get rid of the abbreviation, if possible.I DONT control the database its from a 3rd party.
Example: Houston[HST] I need to remove the [HST]
Can this be done? Either in the command statement of perhaps in the displaymember of the combobox that reads the database?
Oledb - SELECT Through Oledbcommand In .net Not Picking Up Recent Changes?
Sep 28, 2009I'm using the following code to work out the next unique Order Number in an access database. ServerDB is a "System.Data.OleDb.OleDbConnection"
Dim command As New OleDb.OleDbCommand("", serverDB)
command.CommandText = "SELECT max (ORDERNO) FROM WORKORDR"
iOrder = command.ExecuteScalar()
NewOrderNo = (iOrder + 1)
If I subsequently create a WORKORDR (using a different DB connection), the code will not pick up the new "next order number."e.g.
iFoo = NewOrderNo
CreateNewWorkOrderWithNumber(iFoo)
iFoo2 = NewOrderNo
will return the same value to both iFoo and iFoo2. If I Close and then reopen serverDB, as part of the "NewOrderNo" function, then it works. iFoo and iFoo2 will be correct. Is there any way to force a "System.Data.OleDb.OleDbConnection" to refresh the database in this situation without closing and reopening the connection. e.g. Is there anything equivalent to serverdb.refresh or serverdb.FlushCache
How I create the order.I wondered if this could be caused by not updating my transactions after creating the order. I'm using an XSD for the order creation, and the code I use to create the record is ...
Sub CreateNewWorkOrderWithNumber(ByVal iNewOrder As Integer)
Dim OrderDS As New CNC
Dim OrderAdapter As New CNCTableAdapters.WORKORDRTableAdapter
[code]....
OleDbCommand Named Parameters And Order Of Addition?
Apr 8, 2012I have an ACE OleDb connection to an accdb file that�s working well but I�m mystified by something I recently discovered when using named parameters. Order of adding of parameters overrides the parameter names. I see in the MSDN that is states when in "Text" mode named parameters is not supported. My testing has proven this to be the case. The example below puts "Value 2 in Field1 and "Value 1" in Field2. In fact I could change @value2 to @blahblah and it works.
Dim command As New OleDb.OleDbCommand("INSERT INTO Results(Field1,Field2) Values(@value1,@value2)", con)
command.Parameters.AddWithValue("@value2, "Value 2")
command.Parameters.AddWithValue("@value1", "Value 1")
what is text mode and how do I change it and what other types are there? According to John McIlhinney�s earlier explanation things like date variables are added in a binary fashion including support for DBNull. So this is not "Text" so how am I sending binary data to a Db in Text mode? I�m just not getting why it supports names when it ignores them. Is it simply the case that there is no way to add parameters out of order in my case?If adding out of order is impossible should my command use some other syntax? I see other syntax that just uses question marks in the command dim for the Values section. EG "Values(?,?)".
Is there a way of adding parameters without names?In general I�d love to hear someone to explain this so I can understand the inner workings here a little better and have a little more confidence in what I�m doing here. I can fix my code to work but I feel like an idiot using parameter names that are ignored. I just know I�m doing something wrong even if it works.
OleDbCommand Returns Missing Semicolon (;) At End Of SQL Statement?
Jun 14, 2012I am using VB .Net to loop through a regex Match and generate a sql statement. I'm creating the sql like this
sql = "Insert Into Agencies (Address) Values"
While MatchObj.Success
sql = sql & "(""" & MatchObj.Groups(1).Value & """), "
[code].....
VS 2008 : Error Creating New Table Via OleDbCommand
Jun 12, 2009I'm trying to add a new table to a database connected via MS Jet driver. When I run the following Code, the error I get is:
Quote:In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user.I'm not sure what it is exactly hanging up on.
sql = "CREATE TABLE tblTable2 ([Text1] text(100) WITH Compression, " & _
"[Text2] text(25) WITH Compression, " & _
"[Int1] int(4) WITH Compression, " & _
[code]....
Catch An Exception And Throw A New Exception Which Wraps The First Exception As An Inner Exception
May 8, 2009It is possible to catch an exception and throw a new exception which wraps the first exception as an inner exception: [URL] Also, if I call a function and it throws a certain error, but I catch it, will the calling code's catch handler execute? If so, and it is of a higher exception type, is this not wrapping the exception? eg I can throw exception ex of type IndexOutOfRange, log it but rethrow, catch a higher up exception and do something, or I can throw a new exception and wrap an inner exception like:
View 1 RepliesVb 2010: Type OledbConnection, OledbAdapter, And OledbCommand Is Not Defined
Jan 9, 2012I'm trying to import data excel (*.xlsx) to reportview... but i'm getting stuck for six hours to solve this problem :
type OledbConnection, OledbAdapter, and OledbCommand is not defined
i also couldn't find any reference named Microsoft Jet OledB 4.0 in my visual studio 2010 ......... but i find Microsoft Jet and Replication Object 2,6 Library... i added it to my reference , but it didn't work to solve my problem where can i download reference to Microsoft Jet OledB 4.0... is there any mistakes in my installation package visual studio 2010? once, i got message that type "crystalreport" is not defined, probably because i use visual studio 2010 that's not include crystal report in their package installer, and i decided have to download it as 3rd party..here my codes so far... i'm not finished it yet to the report view... i was stuck in this "type not defined error"here i attached also my files ( my macro.xla (zipped in *.zip), and some excel files to execute)
Public Class Form1
Private Sub btn_PilihFileExcel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_PilihFileExcel.Click
ListBox_DaftarSelectedFiles.Items.Clear()
txt_FileDirektori.Clear()
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Use ExecuteReader With A ParamArray?
May 31, 2011How to use the ExecuteReader calling a stored procedure with a parameter array?
View 1 RepliesArgumentOutOfRangeException ExecuteReader With Singlerow
Apr 19, 2010I am getting an ArgumentOutOfRangeException when I try to run the following code,[code]the table that is being read has a single row of data, the database and connection are fine as I can run INSERT/UPDATES etc but wherever I have used a datareader I am getting this exception each time on the "Using reader As MySqlDataReader" line.
View 2 RepliesNo Code Runs After ExecuteReader()?
Aug 3, 2011I am using Microsoft visual basic 2010. I am using the following code to connect to a local access database. After the line myReader = cmd.ExecuteReader () no code runs. I am not receiving an error message.
Dim connectionString
As String =
"Provider=Microsoft.ACE.OLEDB.12.0;data source=C:UsersmikeDocumentsFCE_Database.mdb"
[code]....
I have used this method to connect to the same database multiple times in the same program without a problem I've also tried using OleDb with the same result.
Get Exception When Trying To Access FormValues() Element?
Oct 8, 2010The exception:
"Input string was not in a correct format."
Appears when I try to access a field on my page like this:
.TransmissionId = IIf(FormValues("TransmissionId").Length > 0, Integer.Parse(FormValues("TransmissionId")), 0)
However it works for another field which is the same exact type of field, accessed like this:
.StateId = IIf(FormValues("StateId").Length > 0, Integer.Parse(FormValues("StateId")), 0)
Where could the mismatch and exception be coming from? What could be the fault? The field doesn't have a value when I'm pulling it. Do I have to test for a value different for this number field than I would have to for a text field?
VS 2008 Unauthorized Access Exception?
Jan 10, 2010Ive created a simple application that works fine when i debug and test it though visual studio but when i deploy the application, download it and install it onto my machine i get an error.basically when the first form loads it checks for a file called "New Folder" in my program files folder on my machine if the file is not there, then it adds the file. the code im using to do this is:
If System.IO.Directory.Exists(My.Computer.FileSystem.SpecialDirectories.ProgramFiles & "New Folder") Then
Exit Sub()
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Asp.net - ExecuteReader Taking Time, Not In SQL Server?
Jun 2, 2011I am executing stored procedure using ExcuteReader() command. If I execute Stored Procedure in SQL server it is taking 2 secs. But in code taking around 2 mins. I tried DataAdapter.Fill(). Still the same.
What is wrong in the code?
spString = "usp_graph"
sqlcmd_q.Connection = sqlCnn
sqlcmd_q.CommandText = spString
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Error In Code - DbCommand.ExecuteReader()?
Jul 11, 2011Can anyone tell me How do I solve this error.Error: NullReferenceException was Unhandled - "Object reference not set to an instance of an object."
Line: Dim reader As OleDbDataReader = dbCommand.ExecuteReader()
Database: MS Access
IDE: VB 2010 Express
[code].....
ExecuteReader CommandText Property Has Not Been Initialized
Feb 12, 2012Dear friends I am new in .net world and I am trying to display a single row to a literal. I prefer VB so my code is as follows but I'm getting the error "ExecuteReader: CommandText property has not been initialized".I also tried sqlCmd.CommandText = "getLastModificationDateTime" without the EXEC statement
View 3 RepliesExecuteReader Requires An Open And Available Connection?
Jun 4, 2009Public Class app_mainform
Dim mssqluname As String
Dim mssqlpword As String
[code].....
ExecuteReader: CommandText Property Has Not Been Initialized?
Jul 5, 2011i have this code in form1 at buttonpreview
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Executereader: Connection Property Has Not Been Initialized
Jun 6, 2011i have problem with my code
here is my code
Public Sub increment()
Dim dr As SqlDataReader
If con.State = ConnectionState.Closed Then
[code].....
ExecuteReader: Connection Property Has Not Been Initialized?
Jun 30, 2011Public
Class Form1
Dim conn
[code].....
Executing Sql Statement With A Non Closed Executereader?
Aug 4, 2009i have app that connects to a mysql db.i get data from the db with executereader.but i want to execute some sql depending on the result from a other db.but i get a error when doing ExecuteNonQuery() when the reader is still open.Here's a part of my code where the problem occures.
Code:
tracecom.CommandText = "select * from testsms left join customer on customer.id=testsms.id where date_sub(now(),interval 1 minute) > testsend"
tracerd = tracecom.ExecuteReader()
If tracerd.HasRows Then
[code]....